mozilla-central/toolkit/components/pdfjs/content/web/viewer.mjs (file symbol)

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/**
* @licstart The following is the entire license notice for the
* JavaScript code in this page
*
* Copyright 2024 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @licend The above is the entire license notice for the
* JavaScript code in this page
*/
/******/ // The require scope
/******/ var __webpack_require__ = {};
/******/
/************************************************************************/
/******/ /* webpack/runtime/define property getters */
/******/ (() => {
/******/ // define getter functions for harmony exports
/******/ __webpack_require__.d = (exports, definition) => {
/******/ for(var key in definition) {
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
/******/ }
/******/ }
/******/ };
/******/ })();
/******/
/******/ /* webpack/runtime/hasOwnProperty shorthand */
/******/ (() => {
/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
/******/ })();
/******/
/************************************************************************/
var __webpack_exports__ = {};
// EXPORTS
__webpack_require__.d(__webpack_exports__, {
PDFViewerApplication: () => (/* reexport */ PDFViewerApplication),
PDFViewerApplicationConstants: () => (/* binding */ AppConstants),
PDFViewerApplicationOptions: () => (/* reexport */ AppOptions)
});
;// ./web/ui_utils.js
const DEFAULT_SCALE_VALUE = "auto";
const DEFAULT_SCALE = 1.0;
const DEFAULT_SCALE_DELTA = 1.1;
const MIN_SCALE = 0.1;
const MAX_SCALE = 10.0;
const UNKNOWN_SCALE = 0;
const MAX_AUTO_SCALE = 1.25;
const SCROLLBAR_PADDING = 40;
const VERTICAL_PADDING = 5;
const RenderingStates = {
INITIAL: 0,
RUNNING: 1,
PAUSED: 2,
FINISHED: 3
};
const PresentationModeState = {
UNKNOWN: 0,
NORMAL: 1,
CHANGING: 2,
FULLSCREEN: 3
};
const SidebarView = {
UNKNOWN: -1,
NONE: 0,
THUMBS: 1,
OUTLINE: 2,
ATTACHMENTS: 3,
LAYERS: 4
};
const TextLayerMode = {
DISABLE: 0,
ENABLE: 1,
ENABLE_PERMISSIONS: 2
};
const ScrollMode = {
UNKNOWN: -1,
VERTICAL: 0,
HORIZONTAL: 1,
WRAPPED: 2,
PAGE: 3
};
const SpreadMode = {
UNKNOWN: -1,
NONE: 0,
ODD: 1,
EVEN: 2
};
const CursorTool = {
SELECT: 0,
HAND: 1,
ZOOM: 2
};
const AutoPrintRegExp = /\bprint\s*\(/;
function scrollIntoView(element, spot, scrollMatches = false) {
let parent = element.offsetParent;
if (!parent) {
console.error("offsetParent is not set -- cannot scroll");
return;
}
let offsetY = element.offsetTop + element.clientTop;
let offsetX = element.offsetLeft + element.clientLeft;
while (parent.clientHeight === parent.scrollHeight && parent.clientWidth === parent.scrollWidth || scrollMatches && (parent.classList.contains("markedContent") || getComputedStyle(parent).overflow === "hidden")) {
offsetY += parent.offsetTop;
offsetX += parent.offsetLeft;
parent = parent.offsetParent;
if (!parent) {
return;
}
}
if (spot) {
if (spot.top !== undefined) {
offsetY += spot.top;
}
if (spot.left !== undefined) {
offsetX += spot.left;
parent.scrollLeft = offsetX;
}
}
parent.scrollTop = offsetY;
}
function watchScroll(viewAreaElement, callback, abortSignal = undefined) {
const debounceScroll = function (evt) {
if (rAF) {
return;
}
rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
rAF = null;
const currentX = viewAreaElement.scrollLeft;
const lastX = state.lastX;
if (currentX !== lastX) {
state.right = currentX > lastX;
}
state.lastX = currentX;
const currentY = viewAreaElement.scrollTop;
const lastY = state.lastY;
if (currentY !== lastY) {
state.down = currentY > lastY;
}
state.lastY = currentY;
callback(state);
});
};
const state = {
right: true,
down: true,
lastX: viewAreaElement.scrollLeft,
lastY: viewAreaElement.scrollTop,
_eventHandler: debounceScroll
};
let rAF = null;
viewAreaElement.addEventListener("scroll", debounceScroll, {
useCapture: true,
signal: abortSignal
});
abortSignal?.addEventListener("abort", () => window.cancelAnimationFrame(rAF), {
once: true
});
return state;
}
function parseQueryString(query) {
const params = new Map();
for (const [key, value] of new URLSearchParams(query)) {
params.set(key.toLowerCase(), value);
}
return params;
}
const InvisibleCharsRegExp = /[\x00-\x1F]/g;
function removeNullCharacters(str, replaceInvisible = false) {
if (!InvisibleCharsRegExp.test(str)) {
return str;
}
if (replaceInvisible) {
return str.replaceAll(InvisibleCharsRegExp, m => m === "\x00" ? "" : " ");
}
return str.replaceAll("\x00", "");
}
function binarySearchFirstItem(items, condition, start = 0) {
let minIndex = start;
let maxIndex = items.length - 1;
if (maxIndex < 0 || !condition(items[maxIndex])) {
return items.length;
}
if (condition(items[minIndex])) {
return minIndex;
}
while (minIndex < maxIndex) {
const currentIndex = minIndex + maxIndex >> 1;
const currentItem = items[currentIndex];
if (condition(currentItem)) {
maxIndex = currentIndex;
} else {
minIndex = currentIndex + 1;
}
}
return minIndex;
}
function approximateFraction(x) {
if (Math.floor(x) === x) {
return [x, 1];
}
const xinv = 1 / x;
const limit = 8;
if (xinv > limit) {
return [1, limit];
} else if (Math.floor(xinv) === xinv) {
return [1, xinv];
}
const x_ = x > 1 ? xinv : x;
let a = 0,
b = 1,
c = 1,
d = 1;
while (true) {
const p = a + c,
q = b + d;
if (q > limit) {
break;
}
if (x_ <= p / q) {
c = p;
d = q;
} else {
a = p;
b = q;
}
}
let result;
if (x_ - a / b < c / d - x_) {
result = x_ === x ? [a, b] : [b, a];
} else {
result = x_ === x ? [c, d] : [d, c];
}
return result;
}
function floorToDivide(x, div) {
return x - x % div;
}
function getPageSizeInches({
view,
userUnit,
rotate
}) {
const [x1, y1, x2, y2] = view;
const changeOrientation = rotate % 180 !== 0;
const width = (x2 - x1) / 72 * userUnit;
const height = (y2 - y1) / 72 * userUnit;
return {
width: changeOrientation ? height : width,
height: changeOrientation ? width : height
};
}
function backtrackBeforeAllVisibleElements(index, views, top) {
if (index < 2) {
return index;
}
let elt = views[index].div;
let pageTop = elt.offsetTop + elt.clientTop;
if (pageTop >= top) {
elt = views[index - 1].div;
pageTop = elt.offsetTop + elt.clientTop;
}
for (let i = index - 2; i >= 0; --i) {
elt = views[i].div;
if (elt.offsetTop + elt.clientTop + elt.clientHeight <= pageTop) {
break;
}
index = i;
}
return index;
}
function getVisibleElements({
scrollEl,
views,
sortByVisibility = false,
horizontal = false,
rtl = false
}) {
const top = scrollEl.scrollTop,
bottom = top + scrollEl.clientHeight;
const left = scrollEl.scrollLeft,
right = left + scrollEl.clientWidth;
function isElementBottomAfterViewTop(view) {
const element = view.div;
const elementBottom = element.offsetTop + element.clientTop + element.clientHeight;
return elementBottom > top;
}
function isElementNextAfterViewHorizontally(view) {
const element = view.div;
const elementLeft = element.offsetLeft + element.clientLeft;
const elementRight = elementLeft + element.clientWidth;
return rtl ? elementLeft < right : elementRight > left;
}
const visible = [],
ids = new Set(),
numViews = views.length;
let firstVisibleElementInd = binarySearchFirstItem(views, horizontal ? isElementNextAfterViewHorizontally : isElementBottomAfterViewTop);
if (firstVisibleElementInd > 0 && firstVisibleElementInd < numViews && !horizontal) {
firstVisibleElementInd = backtrackBeforeAllVisibleElements(firstVisibleElementInd, views, top);
}
let lastEdge = horizontal ? right : -1;
for (let i = firstVisibleElementInd; i < numViews; i++) {
const view = views[i],
element = view.div;
const currentWidth = element.offsetLeft + element.clientLeft;
const currentHeight = element.offsetTop + element.clientTop;
const viewWidth = element.clientWidth,
viewHeight = element.clientHeight;
const viewRight = currentWidth + viewWidth;
const viewBottom = currentHeight + viewHeight;
if (lastEdge === -1) {
if (viewBottom >= bottom) {
lastEdge = viewBottom;
}
} else if ((horizontal ? currentWidth : currentHeight) > lastEdge) {
break;
}
if (viewBottom <= top || currentHeight >= bottom || viewRight <= left || currentWidth >= right) {
continue;
}
const hiddenHeight = Math.max(0, top - currentHeight) + Math.max(0, viewBottom - bottom);
const hiddenWidth = Math.max(0, left - currentWidth) + Math.max(0, viewRight - right);
const fractionHeight = (viewHeight - hiddenHeight) / viewHeight,
fractionWidth = (viewWidth - hiddenWidth) / viewWidth;
const percent = fractionHeight * fractionWidth * 100 | 0;
visible.push({
id: view.id,
x: currentWidth,
y: currentHeight,
view,
percent,
widthPercent: fractionWidth * 100 | 0
});
ids.add(view.id);
}
const first = visible[0],
last = visible.at(-1);
if (sortByVisibility) {
visible.sort(function (a, b) {
const pc = a.percent - b.percent;
if (Math.abs(pc) > 0.001) {
return -pc;
}
return a.id - b.id;
});
}
return {
first,
last,
views: visible,
ids
};
}
function normalizeWheelEventDirection(evt) {
let delta = Math.hypot(evt.deltaX, evt.deltaY);
const angle = Math.atan2(evt.deltaY, evt.deltaX);
if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) {
delta = -delta;
}
return delta;
}
function normalizeWheelEventDelta(evt) {
const deltaMode = evt.deltaMode;
let delta = normalizeWheelEventDirection(evt);
const MOUSE_PIXELS_PER_LINE = 30;
const MOUSE_LINES_PER_PAGE = 30;
if (deltaMode === WheelEvent.DOM_DELTA_PIXEL) {
delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE;
} else if (deltaMode === WheelEvent.DOM_DELTA_LINE) {
delta /= MOUSE_LINES_PER_PAGE;
}
return delta;
}
function isValidRotation(angle) {
return Number.isInteger(angle) && angle % 90 === 0;
}
function isValidScrollMode(mode) {
return Number.isInteger(mode) && Object.values(ScrollMode).includes(mode) && mode !== ScrollMode.UNKNOWN;
}
function isValidSpreadMode(mode) {
return Number.isInteger(mode) && Object.values(SpreadMode).includes(mode) && mode !== SpreadMode.UNKNOWN;
}
function isPortraitOrientation(size) {
return size.width <= size.height;
}
const animationStarted = new Promise(function (resolve) {
window.requestAnimationFrame(resolve);
});
const docStyle = document.documentElement.style;
function clamp(v, min, max) {
return Math.min(Math.max(v, min), max);
}
class ProgressBar {
#classList = null;
#disableAutoFetchTimeout = null;
#percent = 0;
#style = null;
#visible = true;
constructor(bar) {
this.#classList = bar.classList;
this.#style = bar.style;
}
get percent() {
return this.#percent;
}
set percent(val) {
this.#percent = clamp(val, 0, 100);
if (isNaN(val)) {
this.#classList.add("indeterminate");
return;
}
this.#classList.remove("indeterminate");
this.#style.setProperty("--progressBar-percent", `${this.#percent}%`);
}
setWidth(viewer) {
if (!viewer) {
return;
}
const container = viewer.parentNode;
const scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
if (scrollbarWidth > 0) {
this.#style.setProperty("--progressBar-end-offset", `${scrollbarWidth}px`);
}
}
setDisableAutoFetch(delay = 5000) {
if (this.#percent === 100 || isNaN(this.#percent)) {
return;
}
if (this.#disableAutoFetchTimeout) {
clearTimeout(this.#disableAutoFetchTimeout);
}
this.show();
this.#disableAutoFetchTimeout = setTimeout(() => {
this.#disableAutoFetchTimeout = null;
this.hide();
}, delay);
}
hide() {
if (!this.#visible) {
return;
}
this.#visible = false;
this.#classList.add("hidden");
}
show() {
if (this.#visible) {
return;
}
this.#visible = true;
this.#classList.remove("hidden");
}
}
function getActiveOrFocusedElement() {
let curRoot = document;
let curActiveOrFocused = curRoot.activeElement || curRoot.querySelector(":focus");
while (curActiveOrFocused?.shadowRoot) {
curRoot = curActiveOrFocused.shadowRoot;
curActiveOrFocused = curRoot.activeElement || curRoot.querySelector(":focus");
}
return curActiveOrFocused;
}
function apiPageLayoutToViewerModes(layout) {
let scrollMode = ScrollMode.VERTICAL,
spreadMode = SpreadMode.NONE;
switch (layout) {
case "SinglePage":
scrollMode = ScrollMode.PAGE;
break;
case "OneColumn":
break;
case "TwoPageLeft":
scrollMode = ScrollMode.PAGE;
case "TwoColumnLeft":
spreadMode = SpreadMode.ODD;
break;
case "TwoPageRight":
scrollMode = ScrollMode.PAGE;
case "TwoColumnRight":
spreadMode = SpreadMode.EVEN;
break;
}
return {
scrollMode,
spreadMode
};
}
function apiPageModeToSidebarView(mode) {
switch (mode) {
case "UseNone":
return SidebarView.NONE;
case "UseThumbs":
return SidebarView.THUMBS;
case "UseOutlines":
return SidebarView.OUTLINE;
case "UseAttachments":
return SidebarView.ATTACHMENTS;
case "UseOC":
return SidebarView.LAYERS;
}
return SidebarView.NONE;
}
function toggleCheckedBtn(button, toggle, view = null) {
button.classList.toggle("toggled", toggle);
button.setAttribute("aria-checked", toggle);
view?.classList.toggle("hidden", !toggle);
}
function toggleExpandedBtn(button, toggle, view = null) {
button.classList.toggle("toggled", toggle);
button.setAttribute("aria-expanded", toggle);
view?.classList.toggle("hidden", !toggle);
}
const calcRound = Math.fround;
;// ./web/app_options.js
const OptionKind = {
BROWSER: 0x01,
VIEWER: 0x02,
API: 0x04,
WORKER: 0x08,
EVENT_DISPATCH: 0x10,
PREFERENCE: 0x80
};
const Type = {
BOOLEAN: 0x01,
NUMBER: 0x02,
OBJECT: 0x04,
STRING: 0x08,
UNDEFINED: 0x10
};
const defaultOptions = {
allowedGlobalEvents: {
value: null,
kind: OptionKind.BROWSER
},
canvasMaxAreaInBytes: {
value: -1,
kind: OptionKind.BROWSER + OptionKind.API
},
isInAutomation: {
value: false,
kind: OptionKind.BROWSER
},
localeProperties: {
value: null,
kind: OptionKind.BROWSER
},
nimbusDataStr: {
value: "",
kind: OptionKind.BROWSER
},
supportsCaretBrowsingMode: {
value: false,
kind: OptionKind.BROWSER
},
supportsDocumentFonts: {
value: true,
kind: OptionKind.BROWSER
},
supportsIntegratedFind: {
value: false,
kind: OptionKind.BROWSER
},
supportsMouseWheelZoomCtrlKey: {
value: true,
kind: OptionKind.BROWSER
},
supportsMouseWheelZoomMetaKey: {
value: true,
kind: OptionKind.BROWSER
},
supportsPinchToZoom: {
value: true,
kind: OptionKind.BROWSER
},
toolbarDensity: {
value: 0,
kind: OptionKind.BROWSER + OptionKind.EVENT_DISPATCH
},
altTextLearnMoreUrl: {
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
annotationEditorMode: {
value: 0,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
annotationMode: {
value: 2,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
cursorToolOnLoad: {
value: 0,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
debuggerSrc: {
value: "./debugger.mjs",
kind: OptionKind.VIEWER
},
defaultZoomDelay: {
value: 400,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
defaultZoomValue: {
value: "",
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
disableHistory: {
value: false,
kind: OptionKind.VIEWER
},
disablePageLabels: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableAltText: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableAltTextModelDownload: {
value: true,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE + OptionKind.EVENT_DISPATCH
},
enableGuessAltText: {
value: true,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE + OptionKind.EVENT_DISPATCH
},
enableHighlightFloatingButton: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableNewAltTextWhenAddingImage: {
value: true,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enablePermissions: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enablePrintAutoRotate: {
value: true,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableScripting: {
value: true,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableUpdatedAddImage: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
externalLinkRel: {
value: "noopener noreferrer nofollow",
kind: OptionKind.VIEWER
},
externalLinkTarget: {
value: 0,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
highlightEditorColors: {
value: "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F",
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
historyUpdateUrl: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
ignoreDestinationZoom: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
imageResourcesPath: {
kind: OptionKind.VIEWER
},
maxCanvasPixels: {
value: 2 ** 25,
kind: OptionKind.VIEWER
},
forcePageColors: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
pageColorsBackground: {
value: "Canvas",
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
pageColorsForeground: {
value: "CanvasText",
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
pdfBugEnabled: {
value: false,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
printResolution: {
value: 150,
kind: OptionKind.VIEWER
},
sidebarViewOnLoad: {
value: -1,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
scrollModeOnLoad: {
value: -1,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
spreadModeOnLoad: {
value: -1,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
textLayerMode: {
value: 1,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
viewOnLoad: {
value: 0,
kind: OptionKind.VIEWER + OptionKind.PREFERENCE
},
cMapPacked: {
value: true,
kind: OptionKind.API
},
cMapUrl: {
kind: OptionKind.API
},
disableAutoFetch: {
value: false,
kind: OptionKind.API + OptionKind.PREFERENCE
},
disableFontFace: {
value: false,
kind: OptionKind.API + OptionKind.PREFERENCE
},
disableRange: {
value: false,
kind: OptionKind.API + OptionKind.PREFERENCE
},
disableStream: {
value: false,
kind: OptionKind.API + OptionKind.PREFERENCE
},
docBaseUrl: {
value: "",
kind: OptionKind.API
},
enableHWA: {
value: false,
kind: OptionKind.API + OptionKind.VIEWER + OptionKind.PREFERENCE
},
enableXfa: {
value: true,
kind: OptionKind.API + OptionKind.PREFERENCE
},
fontExtraProperties: {
value: false,
kind: OptionKind.API
},
isEvalSupported: {
value: true,
kind: OptionKind.API
},
isOffscreenCanvasSupported: {
value: true,
kind: OptionKind.API
},
maxImageSize: {
value: -1,
kind: OptionKind.API
},
pdfBug: {
value: false,
kind: OptionKind.API
},
standardFontDataUrl: {
kind: OptionKind.API
},
useSystemFonts: {
value: undefined,
kind: OptionKind.API,
type: Type.BOOLEAN + Type.UNDEFINED
},
verbosity: {
value: 1,
kind: OptionKind.API
},
workerPort: {
value: null,
kind: OptionKind.WORKER
},
workerSrc: {
value: "resource://pdf.js/build/pdf.worker.mjs",
kind: OptionKind.WORKER
}
};
class AppOptions {
static eventBus;
static #opts = new Map();
static {
for (const name in defaultOptions) {
this.#opts.set(name, defaultOptions[name].value);
}
}
static get(name) {
return this.#opts.get(name);
}
static getAll(kind = null, defaultOnly = false) {
const options = Object.create(null);
for (const name in defaultOptions) {
const defaultOpt = defaultOptions[name];
if (kind && !(kind & defaultOpt.kind)) {
continue;
}
options[name] = !defaultOnly ? this.#opts.get(name) : defaultOpt.value;
}
return options;
}
static set(name, value) {
this.setAll({
[name]: value
});
}
static setAll(options, prefs = false) {
let events;
for (const name in options) {
const defaultOpt = defaultOptions[name],
userOpt = options[name];
if (!defaultOpt || !(typeof userOpt === typeof defaultOpt.value || Type[(typeof userOpt).toUpperCase()] & defaultOpt.type)) {
continue;
}
const {
kind
} = defaultOpt;
if (prefs && !(kind & OptionKind.BROWSER || kind & OptionKind.PREFERENCE)) {
continue;
}
if (this.eventBus && kind & OptionKind.EVENT_DISPATCH) {
(events ||= new Map()).set(name, userOpt);
}
this.#opts.set(name, userOpt);
}
if (events) {
for (const [name, value] of events) {
this.eventBus.dispatch(name.toLowerCase(), {
source: this,
value
});
}
}
}
}
;// ./web/pdf_link_service.js
const DEFAULT_LINK_REL = "noopener noreferrer nofollow";
const LinkTarget = {
NONE: 0,
SELF: 1,
BLANK: 2,
PARENT: 3,
TOP: 4
};
class PDFLinkService {
externalLinkEnabled = true;
constructor({
eventBus,
externalLinkTarget = null,
externalLinkRel = null,
ignoreDestinationZoom = false
} = {}) {
this.eventBus = eventBus;
this.externalLinkTarget = externalLinkTarget;
this.externalLinkRel = externalLinkRel;
this._ignoreDestinationZoom = ignoreDestinationZoom;
this.baseUrl = null;
this.pdfDocument = null;
this.pdfViewer = null;
this.pdfHistory = null;
}
setDocument(pdfDocument, baseUrl = null) {
this.baseUrl = baseUrl;
this.pdfDocument = pdfDocument;
}
setViewer(pdfViewer) {
this.pdfViewer = pdfViewer;
}
setHistory(pdfHistory) {
this.pdfHistory = pdfHistory;
}
get pagesCount() {
return this.pdfDocument ? this.pdfDocument.numPages : 0;
}
get page() {
return this.pdfDocument ? this.pdfViewer.currentPageNumber : 1;
}
set page(value) {
if (this.pdfDocument) {
this.pdfViewer.currentPageNumber = value;
}
}
get rotation() {
return this.pdfDocument ? this.pdfViewer.pagesRotation : 0;
}
set rotation(value) {
if (this.pdfDocument) {
this.pdfViewer.pagesRotation = value;
}
}
get isInPresentationMode() {
return this.pdfDocument ? this.pdfViewer.isInPresentationMode : false;
}
async goToDestination(dest) {
if (!this.pdfDocument) {
return;
}
let namedDest, explicitDest, pageNumber;
if (typeof dest === "string") {
namedDest = dest;
explicitDest = await this.pdfDocument.getDestination(dest);
} else {
namedDest = null;
explicitDest = await dest;
}
if (!Array.isArray(explicitDest)) {
console.error(`goToDestination: "${explicitDest}" is not a valid destination array, for dest="${dest}".`);
return;
}
const [destRef] = explicitDest;
if (destRef && typeof destRef === "object") {
pageNumber = this.pdfDocument.cachedPageNumber(destRef);
if (!pageNumber) {
try {
pageNumber = (await this.pdfDocument.getPageIndex(destRef)) + 1;
} catch {
console.error(`goToDestination: "${destRef}" is not a valid page reference, for dest="${dest}".`);
return;
}
}
} else if (Number.isInteger(destRef)) {
pageNumber = destRef + 1;
}
if (!pageNumber || pageNumber < 1 || pageNumber > this.pagesCount) {
console.error(`goToDestination: "${pageNumber}" is not a valid page number, for dest="${dest}".`);
return;
}
if (this.pdfHistory) {
this.pdfHistory.pushCurrentPosition();
this.pdfHistory.push({
namedDest,
explicitDest,
pageNumber
});
}
this.pdfViewer.scrollPageIntoView({
pageNumber,
destArray: explicitDest,
ignoreDestinationZoom: this._ignoreDestinationZoom
});
}
goToPage(val) {
if (!this.pdfDocument) {
return;
}
const pageNumber = typeof val === "string" && this.pdfViewer.pageLabelToPageNumber(val) || val | 0;
if (!(Number.isInteger(pageNumber) && pageNumber > 0 && pageNumber <= this.pagesCount)) {
console.error(`PDFLinkService.goToPage: "${val}" is not a valid page.`);
return;
}
if (this.pdfHistory) {
this.pdfHistory.pushCurrentPosition();
this.pdfHistory.pushPage(pageNumber);
}
this.pdfViewer.scrollPageIntoView({
pageNumber
});
}
addLinkAttributes(link, url, newWindow = false) {
if (!url || typeof url !== "string") {
throw new Error('A valid "url" parameter must provided.');
}
const target = newWindow ? LinkTarget.BLANK : this.externalLinkTarget,
rel = this.externalLinkRel;
if (this.externalLinkEnabled) {
link.href = link.title = url;
} else {
link.href = "";
link.title = `Disabled: ${url}`;
link.onclick = () => false;
}
let targetStr = "";
switch (target) {
case LinkTarget.NONE:
break;
case LinkTarget.SELF:
targetStr = "_self";
break;
case LinkTarget.BLANK:
targetStr = "_blank";
break;
case LinkTarget.PARENT:
targetStr = "_parent";
break;
case LinkTarget.TOP:
targetStr = "_top";
break;
}
link.target = targetStr;
link.rel = typeof rel === "string" ? rel : DEFAULT_LINK_REL;
}
getDestinationHash(dest) {
if (typeof dest === "string") {
if (dest.length > 0) {
return this.getAnchorUrl("#" + escape(dest));
}
} else if (Array.isArray(dest)) {
const str = JSON.stringify(dest);
if (str.length > 0) {
return this.getAnchorUrl("#" + escape(str));
}
}
return this.getAnchorUrl("");
}
getAnchorUrl(anchor) {
return this.baseUrl ? this.baseUrl + anchor : anchor;
}
setHash(hash) {
if (!this.pdfDocument) {
return;
}
let pageNumber, dest;
if (hash.includes("=")) {
const params = parseQueryString(hash);
if (params.has("search")) {
const query = params.get("search").replaceAll('"', ""),
phrase = params.get("phrase") === "true";
this.eventBus.dispatch("findfromurlhash", {
source: this,
query: phrase ? query : query.match(/\S+/g)
});
}
if (params.has("page")) {
pageNumber = params.get("page") | 0 || 1;
}
if (params.has("zoom")) {
const zoomArgs = params.get("zoom").split(",");
const zoomArg = zoomArgs[0];
const zoomArgNumber = parseFloat(zoomArg);
if (!zoomArg.includes("Fit")) {
dest = [null, {
name: "XYZ"
}, zoomArgs.length > 1 ? zoomArgs[1] | 0 : null, zoomArgs.length > 2 ? zoomArgs[2] | 0 : null, zoomArgNumber ? zoomArgNumber / 100 : zoomArg];
} else if (zoomArg === "Fit" || zoomArg === "FitB") {
dest = [null, {
name: zoomArg
}];
} else if (zoomArg === "FitH" || zoomArg === "FitBH" || zoomArg === "FitV" || zoomArg === "FitBV") {
dest = [null, {
name: zoomArg
}, zoomArgs.length > 1 ? zoomArgs[1] | 0 : null];
} else if (zoomArg === "FitR") {
if (zoomArgs.length !== 5) {
console.error('PDFLinkService.setHash: Not enough parameters for "FitR".');
} else {
dest = [null, {
name: zoomArg
}, zoomArgs[1] | 0, zoomArgs[2] | 0, zoomArgs[3] | 0, zoomArgs[4] | 0];
}
} else {
console.error(`PDFLinkService.setHash: "${zoomArg}" is not a valid zoom value.`);
}
}
if (dest) {
this.pdfViewer.scrollPageIntoView({
pageNumber: pageNumber || this.page,
destArray: dest,
allowNegativeOffset: true
});
} else if (pageNumber) {
this.page = pageNumber;
}
if (params.has("pagemode")) {
this.eventBus.dispatch("pagemode", {
source: this,
mode: params.get("pagemode")
});
}
if (params.has("nameddest")) {
this.goToDestination(params.get("nameddest"));
}
if (!params.has("filename") || !params.has("filedest")) {
return;
}
hash = params.get("filedest");
}
dest = unescape(hash);
try {
dest = JSON.parse(dest);
if (!Array.isArray(dest)) {
dest = dest.toString();
}
} catch {}
if (typeof dest === "string" || PDFLinkService.#isValidExplicitDest(dest)) {
this.goToDestination(dest);
return;
}
console.error(`PDFLinkService.setHash: "${unescape(hash)}" is not a valid destination.`);
}
executeNamedAction(action) {
if (!this.pdfDocument) {
return;
}
switch (action) {
case "GoBack":
this.pdfHistory?.back();
break;
case "GoForward":
this.pdfHistory?.forward();
break;
case "NextPage":
this.pdfViewer.nextPage();
break;
case "PrevPage":
this.pdfViewer.previousPage();
break;
case "LastPage":
this.page = this.pagesCount;
break;
case "FirstPage":
this.page = 1;
break;
default:
break;
}
this.eventBus.dispatch("namedaction", {
source: this,
action
});
}
async executeSetOCGState(action) {
if (!this.pdfDocument) {
return;
}
const pdfDocument = this.pdfDocument,
optionalContentConfig = await this.pdfViewer.optionalContentConfigPromise;
if (pdfDocument !== this.pdfDocument) {
return;
}
optionalContentConfig.setOCGState(action);
this.pdfViewer.optionalContentConfigPromise = Promise.resolve(optionalContentConfig);
}
static #isValidExplicitDest(dest) {
if (!Array.isArray(dest) || dest.length < 2) {
return false;
}
const [page, zoom, ...args] = dest;
if (!(typeof page === "object" && Number.isInteger(page?.num) && Number.isInteger(page?.gen)) && !Number.isInteger(page)) {
return false;
}
if (!(typeof zoom === "object" && typeof zoom?.name === "string")) {
return false;
}
const argsLen = args.length;
let allowNull = true;
switch (zoom.name) {
case "XYZ":
if (argsLen < 2 || argsLen > 3) {
return false;
}
break;
case "Fit":
case "FitB":
return argsLen === 0;
case "FitH":
case "FitBH":
case "FitV":
case "FitBV":
if (argsLen > 1) {
return false;
}
break;
case "FitR":
if (argsLen !== 4) {
return false;
}
allowNull = false;
break;
default:
return false;
}
for (const arg of args) {
if (!(typeof arg === "number" || allowNull && arg === null)) {
return false;
}
}
return true;
}
}
class SimpleLinkService extends PDFLinkService {
setDocument(pdfDocument, baseUrl = null) {}
}
;// ./web/pdfjs.js
const {
AbortException,
AnnotationEditorLayer,
AnnotationEditorParamsType,
AnnotationEditorType,
AnnotationEditorUIManager,
AnnotationLayer,
AnnotationMode,
build,
ColorPicker,
createValidAbsoluteUrl,
DOMSVGFactory,
DrawLayer,
FeatureTest,
fetchData,
getDocument,
getFilenameFromUrl,
getPdfFilenameFromUrl,
getXfaPageViewport,
GlobalWorkerOptions,
ImageKind,
InvalidPDFException,
isDataScheme,
isPdfFile,
MissingPDFException,
noContextMenu,
normalizeUnicode,
OPS,
OutputScale,
PasswordResponses,
PDFDataRangeTransport,
PDFDateString,
PDFWorker,
PermissionFlag,
PixelsPerInch,
RenderingCancelledException,
setLayerDimensions,
shadow,
stopEvent,
TextLayer,
UnexpectedResponseException,
Util,
VerbosityLevel,
version,
XfaLayer
} = globalThis.pdfjsLib;
;// ./web/event_utils.js
const WaitOnType = {
EVENT: "event",
TIMEOUT: "timeout"
};
async function waitOnEventOrTimeout({
target,
name,
delay = 0
}) {
if (typeof target !== "object" || !(name && typeof name === "string") || !(Number.isInteger(delay) && delay >= 0)) {
throw new Error("waitOnEventOrTimeout - invalid parameters.");
}
const {
promise,
resolve
} = Promise.withResolvers();
const ac = new AbortController();
function handler(type) {
ac.abort();
clearTimeout(timeout);
resolve(type);
}
const evtMethod = target instanceof EventBus ? "_on" : "addEventListener";
target[evtMethod](name, handler.bind(null, WaitOnType.EVENT), {
signal: ac.signal
});
const timeout = setTimeout(handler.bind(null, WaitOnType.TIMEOUT), delay);
return promise;
}
class EventBus {
#listeners = Object.create(null);
on(eventName, listener, options = null) {
this._on(eventName, listener, {
external: true,
once: options?.once,
signal: options?.signal
});
}
off(eventName, listener, options = null) {
this._off(eventName, listener);
}
dispatch(eventName, data) {
const eventListeners = this.#listeners[eventName];
if (!eventListeners || eventListeners.length === 0) {
return;
}
let externalListeners;
for (const {
listener,
external,
once
} of eventListeners.slice(0)) {
if (once) {
this._off(eventName, listener);
}
if (external) {
(externalListeners ||= []).push(listener);
continue;
}
listener(data);
}
if (externalListeners) {
for (const listener of externalListeners) {
listener(data);
}
externalListeners = null;
}
}
_on(eventName, listener, options = null) {
let rmAbort = null;
if (options?.signal instanceof AbortSignal) {
const {
signal
} = options;
if (signal.aborted) {
console.error("Cannot use an `aborted` signal.");
return;
}
const onAbort = () => this._off(eventName, listener);
rmAbort = () => signal.removeEventListener("abort", onAbort);
signal.addEventListener("abort", onAbort);
}
const eventListeners = this.#listeners[eventName] ||= [];
eventListeners.push({
listener,
external: options?.external === true,
once: options?.once === true,
rmAbort
});
}
_off(eventName, listener, options = null) {
const eventListeners = this.#listeners[eventName];
if (!eventListeners) {
return;
}
for (let i = 0, ii = eventListeners.length; i < ii; i++) {
const evt = eventListeners[i];
if (evt.listener === listener) {
evt.rmAbort?.();
eventListeners.splice(i, 1);
return;
}
}
}
}
class FirefoxEventBus extends EventBus {
#externalServices;
#globalEventNames;
#isInAutomation;
constructor(globalEventNames, externalServices, isInAutomation) {
super();
this.#globalEventNames = globalEventNames;
this.#externalServices = externalServices;
this.#isInAutomation = isInAutomation;
}
dispatch(eventName, data) {
super.dispatch(eventName, data);
if (this.#isInAutomation) {
const detail = Object.create(null);
if (data) {
for (const key in data) {
const value = data[key];
if (key === "source") {
if (value === window || value === document) {
return;
}
continue;
}
detail[key] = value;
}
}
const event = new CustomEvent(eventName, {
bubbles: true,
cancelable: true,
detail
});
document.dispatchEvent(event);
}
if (this.#globalEventNames?.has(eventName)) {
this.#externalServices.dispatchGlobalEvent({
eventName,
detail: data
});
}
}
}
;// ./web/external_services.js
class BaseExternalServices {
updateFindControlState(data) {}
updateFindMatchesCount(data) {}
initPassiveLoading() {}
reportTelemetry(data) {}
async createL10n() {
throw new Error("Not implemented: createL10n");
}
createScripting() {
throw new Error("Not implemented: createScripting");
}
updateEditorStates(data) {
throw new Error("Not implemented: updateEditorStates");
}
dispatchGlobalEvent(_event) {}
}
;// ./web/preferences.js
class BasePreferences {
#defaults = Object.freeze({
annotationEditorMode: 0,
annotationMode: 2,
cursorToolOnLoad: 0,
defaultZoomDelay: 400,
defaultZoomValue: "",
disablePageLabels: false,
enableAltText: false,
enableAltTextModelDownload: true,
enableGuessAltText: true,
enableHighlightFloatingButton: false,
enableNewAltTextWhenAddingImage: true,
enablePermissions: false,
enablePrintAutoRotate: true,
enableScripting: true,
enableUpdatedAddImage: false,
externalLinkTarget: 0,
highlightEditorColors: "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F",
historyUpdateUrl: false,
ignoreDestinationZoom: false,
forcePageColors: false,
pageColorsBackground: "Canvas",
pageColorsForeground: "CanvasText",
pdfBugEnabled: false,
sidebarViewOnLoad: -1,
scrollModeOnLoad: -1,
spreadModeOnLoad: -1,
textLayerMode: 1,
viewOnLoad: 0,
disableAutoFetch: false,
disableFontFace: false,
disableRange: false,
disableStream: false,
enableHWA: false,
enableXfa: true
});
#initializedPromise = null;
constructor() {
this.#initializedPromise = this._readFromStorage(this.#defaults).then(({
browserPrefs,
prefs
}) => {
AppOptions.setAll({
...browserPrefs,
...prefs
}, true);
});
window.addEventListener("updatedPreference", async ({
detail: {
name,
value
}
}) => {
await this.#initializedPromise;
AppOptions.setAll({
[name]: value
}, true);
});
}
async _writeToStorage(prefObj) {
throw new Error("Not implemented: _writeToStorage");
}
async _readFromStorage(prefObj) {
throw new Error("Not implemented: _readFromStorage");
}
async reset() {
throw new Error("Please use `about:config` to change preferences.");
}
async set(name, value) {
await this.#initializedPromise;
AppOptions.setAll({
[name]: value
}, true);
await this._writeToStorage({
[name]: AppOptions.get(name)
});
}
async get(name) {
throw new Error("Not implemented: get");
}
get initializedPromise() {
return this.#initializedPromise;
}
}
;// ./web/l10n.js
class L10n {
#dir;
#elements;
#lang;
#l10n;
constructor({
lang,
isRTL
}, l10n = null) {
this.#lang = L10n.#fixupLangCode(lang);
this.#l10n = l10n;
this.#dir = isRTL ?? L10n.#isRTL(this.#lang) ? "rtl" : "ltr";
}
_setL10n(l10n) {
this.#l10n = l10n;
}
getLanguage() {
return this.#lang;
}
getDirection() {
return this.#dir;
}
async get(ids, args = null, fallback) {
if (Array.isArray(ids)) {
ids = ids.map(id => ({
id
}));
const messages = await this.#l10n.formatMessages(ids);
return messages.map(message => message.value);
}
const messages = await this.#l10n.formatMessages([{
id: ids,
args
}]);
return messages[0]?.value || fallback;
}
async translate(element) {
(this.#elements ||= new Set()).add(element);
try {
this.#l10n.connectRoot(element);
await this.#l10n.translateRoots();
} catch {}
}
async translateOnce(element) {
try {
await this.#l10n.translateElements([element]);
} catch (ex) {
console.error(`translateOnce: "${ex}".`);
}
}
async destroy() {
if (this.#elements) {
for (const element of this.#elements) {
this.#l10n.disconnectRoot(element);
}
this.#elements.clear();
this.#elements = null;
}
this.#l10n.pauseObserving();
}
pause() {
this.#l10n.pauseObserving();
}
resume() {
this.#l10n.resumeObserving();
}
static #fixupLangCode(langCode) {
langCode = langCode?.toLowerCase() || "en-us";
const PARTIAL_LANG_CODES = {
en: "en-us",
es: "es-es",
fy: "fy-nl",
ga: "ga-ie",
gu: "gu-in",
hi: "hi-in",
hy: "hy-am",
nb: "nb-no",
ne: "ne-np",
nn: "nn-no",
pa: "pa-in",
pt: "pt-pt",
sv: "sv-se",
zh: "zh-cn"
};
return PARTIAL_LANG_CODES[langCode] || langCode;
}
static #isRTL(lang) {
const shortCode = lang.split("-", 1)[0];
return ["ar", "he", "fa", "ps", "ur"].includes(shortCode);
}
}
const GenericL10n = null;
;// ./web/firefoxcom.js
let viewerApp = {
initialized: false
};
function initCom(app) {
viewerApp = app;
}
class FirefoxCom {
static requestAsync(action, data) {
return new Promise(resolve => {
this.request(action, data, resolve);
});
}
static request(action, data, callback = null) {
const request = document.createTextNode("");
if (callback) {
request.addEventListener("pdf.js.response", event => {
const response = event.detail.response;
event.target.remove();
callback(response);
}, {
once: true
});
}
document.documentElement.append(request);
const sender = new CustomEvent("pdf.js.message", {
bubbles: true,
cancelable: false,
detail: {
action,
data,
responseExpected: !!callback
}
});
request.dispatchEvent(sender);
}
}
class DownloadManager {
#openBlobUrls = new WeakMap();
downloadData(data, filename, contentType) {
const blobUrl = URL.createObjectURL(new Blob([data], {
type: contentType
}));
FirefoxCom.request("download", {
blobUrl,
originalUrl: blobUrl,
filename,
isAttachment: true
});
}
openOrDownloadData(data, filename, dest = null) {
const isPdfData = isPdfFile(filename);
const contentType = isPdfData ? "application/pdf" : "";
if (isPdfData) {
let blobUrl = this.#openBlobUrls.get(data);
if (!blobUrl) {
blobUrl = URL.createObjectURL(new Blob([data], {
type: contentType
}));
this.#openBlobUrls.set(data, blobUrl);
}
let viewerUrl = blobUrl + "#filename=" + encodeURIComponent(filename);
if (dest) {
viewerUrl += `&filedest=${escape(dest)}`;
}
try {
window.open(viewerUrl);
return true;
} catch (ex) {
console.error(`openOrDownloadData: ${ex}`);
URL.revokeObjectURL(blobUrl);
this.#openBlobUrls.delete(data);
}
}
this.downloadData(data, filename, contentType);
return false;
}
download(data, url, filename) {
const blobUrl = data ? URL.createObjectURL(new Blob([data], {
type: "application/pdf"
})) : null;
FirefoxCom.request("download", {
blobUrl,
originalUrl: url,
filename
});
}
}
class Preferences extends BasePreferences {
async _readFromStorage(prefObj) {
return FirefoxCom.requestAsync("getPreferences", prefObj);
}
async _writeToStorage(prefObj) {
return FirefoxCom.requestAsync("setPreferences", prefObj);
}
}
(function listenFindEvents() {
const events = ["find", "findagain", "findhighlightallchange", "findcasesensitivitychange", "findentirewordchange", "findbarclose", "finddiacriticmatchingchange"];
const findLen = "find".length;
const handleEvent = function ({
type,
detail
}) {
if (!viewerApp.initialized) {
return;
}
if (type === "findbarclose") {
viewerApp.eventBus.dispatch(type, {
source: window
});
return;
}
viewerApp.eventBus.dispatch("find", {
source: window,
type: type.substring(findLen),
query: detail.query,
caseSensitive: !!detail.caseSensitive,
entireWord: !!detail.entireWord,
highlightAll: !!detail.highlightAll,
findPrevious: !!detail.findPrevious,
matchDiacritics: !!detail.matchDiacritics
});
};
for (const event of events) {
window.addEventListener(event, handleEvent);
}
})();
(function listenZoomEvents() {
const events = ["zoomin", "zoomout", "zoomreset"];
const handleEvent = function ({
type,
detail
}) {
if (!viewerApp.initialized) {
return;
}
if (type === "zoomreset" && viewerApp.pdfViewer.currentScaleValue === DEFAULT_SCALE_VALUE) {
return;
}
viewerApp.eventBus.dispatch(type, {
source: window
});
};
for (const event of events) {
window.addEventListener(event, handleEvent);
}
})();
(function listenSaveEvent() {
const handleEvent = function ({
type,
detail
}) {
if (!viewerApp.initialized) {
return;
}
viewerApp.eventBus.dispatch("download", {
source: window
});
};
window.addEventListener("save", handleEvent);
})();
(function listenEditingEvent() {
const handleEvent = function ({
detail
}) {
if (!viewerApp.initialized) {
return;
}
viewerApp.eventBus.dispatch("editingaction", {
source: window,
name: detail.name
});
};
window.addEventListener("editingaction", handleEvent);
})();
class FirefoxComDataRangeTransport extends PDFDataRangeTransport {
requestDataRange(begin, end) {
FirefoxCom.request("requestDataRange", {
begin,
end
});
}
abort() {
FirefoxCom.request("abortLoading", null);
}
}
class FirefoxScripting {
static async createSandbox(data) {
const success = await FirefoxCom.requestAsync("createSandbox", data);
if (!success) {
throw new Error("Cannot create sandbox.");
}
}
static async dispatchEventInSandbox(event) {
FirefoxCom.request("dispatchEventInSandbox", event);
}
static async destroySandbox() {
FirefoxCom.request("destroySandbox", null);
}
}
class MLManager {
#abortSignal = null;
#enabled = null;
#eventBus = null;
#ready = null;
#requestResolvers = null;
hasProgress = false;
static #AI_ALT_TEXT_MODEL_NAME = "moz-image-to-text";
constructor({
altTextLearnMoreUrl,
enableGuessAltText,
enableAltTextModelDownload
}) {
this.altTextLearnMoreUrl = altTextLearnMoreUrl;
this.enableAltTextModelDownload = enableAltTextModelDownload;
this.enableGuessAltText = enableGuessAltText;
}
setEventBus(eventBus, abortSignal) {
this.#eventBus = eventBus;
this.#abortSignal = abortSignal;
eventBus._on("enablealttextmodeldownload", ({
value
}) => {
if (this.enableAltTextModelDownload === value) {
return;
}
if (value) {
this.downloadModel("altText");
} else {
this.deleteModel("altText");
}
}, {
signal: abortSignal
});
eventBus._on("enableguessalttext", ({
value
}) => {
this.toggleService("altText", value);
}, {
signal: abortSignal
});
}
async isEnabledFor(name) {
return this.enableGuessAltText && !!(await this.#enabled?.get(name));
}
isReady(name) {
return this.#ready?.has(name) ?? false;
}
async deleteModel(name) {
if (name !== "altText" || !this.enableAltTextModelDownload) {
return;
}
this.enableAltTextModelDownload = false;
this.#ready?.delete(name);
this.#enabled?.delete(name);
await this.toggleService("altText", false);
await FirefoxCom.requestAsync("mlDelete", MLManager.#AI_ALT_TEXT_MODEL_NAME);
}
async loadModel(name) {
if (name === "altText" && this.enableAltTextModelDownload) {
await this.#loadAltTextEngine(false);
}
}
async downloadModel(name) {
if (name !== "altText" || this.enableAltTextModelDownload) {
return null;
}
this.enableAltTextModelDownload = true;
return this.#loadAltTextEngine(true);
}
async guess(data) {
if (data?.name !== "altText") {
return null;
}
const resolvers = this.#requestResolvers ||= new Set();
const resolver = Promise.withResolvers();
resolvers.add(resolver);
data.service = MLManager.#AI_ALT_TEXT_MODEL_NAME;
FirefoxCom.requestAsync("mlGuess", data).then(response => {
if (resolvers.has(resolver)) {
resolver.resolve(response);
resolvers.delete(resolver);
}
}).catch(reason => {
if (resolvers.has(resolver)) {
resolver.reject(reason);
resolvers.delete(resolver);
}
});
return resolver.promise;
}
async #cancelAllRequests() {
if (!this.#requestResolvers) {
return;
}
for (const resolver of this.#requestResolvers) {
resolver.resolve({
cancel: true
});
}
this.#requestResolvers.clear();
this.#requestResolvers = null;
}
async toggleService(name, enabled) {
if (name !== "altText" || this.enableGuessAltText === enabled) {
return;
}
this.enableGuessAltText = enabled;
if (enabled) {
if (this.enableAltTextModelDownload) {
await this.#loadAltTextEngine(false);
}
} else {
this.#cancelAllRequests();
}
}
async #loadAltTextEngine(listenToProgress) {
if (this.#enabled?.has("altText")) {
return;
}
this.#ready ||= new Set();
const promise = FirefoxCom.requestAsync("loadAIEngine", {
service: MLManager.#AI_ALT_TEXT_MODEL_NAME,
listenToProgress
}).then(ok => {
if (ok) {
this.#ready.add("altText");
}
return ok;
});
(this.#enabled ||= new Map()).set("altText", promise);
if (listenToProgress) {
const ac = new AbortController();
const signal = AbortSignal.any([this.#abortSignal, ac.signal]);
this.hasProgress = true;
window.addEventListener("loadAIEngineProgress", ({
detail
}) => {
this.#eventBus.dispatch("loadaiengineprogress", {
source: this,
detail
});
if (detail.finished) {
ac.abort();
this.hasProgress = false;
}
}, {
signal
});
promise.then(ok => {
if (!ok) {
ac.abort();
this.hasProgress = false;
}
});
}
await promise;
}
}
class ExternalServices extends BaseExternalServices {
updateFindControlState(data) {
FirefoxCom.request("updateFindControlState", data);
}
updateFindMatchesCount(data) {
FirefoxCom.request("updateFindMatchesCount", data);
}
initPassiveLoading() {
let pdfDataRangeTransport;
window.addEventListener("message", function windowMessage(e) {
if (e.source !== null) {
console.warn("Rejected untrusted message from " + e.origin);
return;
}
const args = e.data;
if (typeof args !== "object" || !("pdfjsLoadAction" in args)) {
return;
}
switch (args.pdfjsLoadAction) {
case "supportsRangedLoading":
if (args.done && !args.data) {
viewerApp._documentError(null);
break;
}
pdfDataRangeTransport = new FirefoxComDataRangeTransport(args.length, args.data, args.done, args.filename);
viewerApp.open({
range: pdfDataRangeTransport
});
break;
case "range":
pdfDataRangeTransport.onDataRange(args.begin, args.chunk);
break;
case "rangeProgress":
pdfDataRangeTransport.onDataProgress(args.loaded);
break;
case "progressiveRead":
pdfDataRangeTransport.onDataProgressiveRead(args.chunk);
pdfDataRangeTransport.onDataProgress(args.loaded, args.total);
break;
case "progressiveDone":
pdfDataRangeTransport?.onDataProgressiveDone();
break;
case "progress":
viewerApp.progress(args.loaded / args.total);
break;
case "complete":
if (!args.data) {
viewerApp._documentError(null, {
message: args.errorCode
});
break;
}
viewerApp.open({
data: args.data,
filename: args.filename
});
break;
}
});
FirefoxCom.request("initPassiveLoading", null);
}
reportTelemetry(data) {
FirefoxCom.request("reportTelemetry", data);
}
updateEditorStates(data) {
FirefoxCom.request("updateEditorStates", data);
}
async createL10n() {
await document.l10n.ready;
return new L10n(AppOptions.get("localeProperties"), document.l10n);
}
createScripting() {
return FirefoxScripting;
}
dispatchGlobalEvent(event) {
FirefoxCom.request("dispatchGlobalEvent", event);
}
}
;// ./web/new_alt_text_manager.js
class NewAltTextManager {
#boundCancel = this.#cancel.bind(this);
#createAutomaticallyButton;
#currentEditor = null;
#cancelButton;
#descriptionContainer;
#dialog;
#disclaimer;
#downloadModel;
#downloadModelDescription;
#eventBus;
#firstTime = false;
#guessedAltText;
#hasAI = null;
#isEditing = null;
#imagePreview;
#imageData;
#isAILoading = false;
#wasAILoading = false;
#learnMore;
#notNowButton;
#overlayManager;
#textarea;
#title;
#uiManager;
#previousAltText = null;
constructor({
descriptionContainer,
dialog,
imagePreview,
cancelButton,
disclaimer,
notNowButton,
saveButton,
textarea,
learnMore,
errorCloseButton,
createAutomaticallyButton,
downloadModel,
downloadModelDescription,
title
}, overlayManager, eventBus) {
this.#cancelButton = cancelButton;
this.#createAutomaticallyButton = createAutomaticallyButton;
this.#descriptionContainer = descriptionContainer;
this.#dialog = dialog;
this.#disclaimer = disclaimer;
this.#notNowButton = notNowButton;
this.#imagePreview = imagePreview;
this.#textarea = textarea;
this.#learnMore = learnMore;
this.#title = title;
this.#downloadModel = downloadModel;
this.#downloadModelDescription = downloadModelDescription;
this.#overlayManager = overlayManager;
this.#eventBus = eventBus;
dialog.addEventListener("close", this.#close.bind(this));
dialog.addEventListener("contextmenu", event => {
if (event.target !== this.#textarea) {
event.preventDefault();
}
});
cancelButton.addEventListener("click", this.#boundCancel);
notNowButton.addEventListener("click", this.#boundCancel);
saveButton.addEventListener("click", this.#save.bind(this));
errorCloseButton.addEventListener("click", () => {
this.#toggleError(false);
});
createAutomaticallyButton.addEventListener("click", async () => {
const checked = createAutomaticallyButton.getAttribute("aria-pressed") !== "true";
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.alt_text.ai_generation_check",
data: {
status: checked
}
});
if (this.#uiManager) {
this.#uiManager.setPreference("enableGuessAltText", checked);
await this.#uiManager.mlManager.toggleService("altText", checked);
}
this.#toggleGuessAltText(checked, false);
});
textarea.addEventListener("focus", () => {
this.#wasAILoading = this.#isAILoading;
this.#toggleLoading(false);
this.#toggleTitleAndDisclaimer();
});
textarea.addEventListener("blur", () => {
if (!textarea.value) {
this.#toggleLoading(this.#wasAILoading);
}
this.#toggleTitleAndDisclaimer();
});
textarea.addEventListener("input", () => {
this.#toggleTitleAndDisclaimer();
});
eventBus._on("enableguessalttext", ({
value
}) => {
this.#toggleGuessAltText(value, false);
});
this.#overlayManager.register(dialog);
this.#learnMore.addEventListener("click", () => {
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.alt_text.info",
data: {
topic: "alt_text"
}
});
});
}
#toggleLoading(value) {
if (!this.#uiManager || this.#isAILoading === value) {
return;
}
this.#isAILoading = value;
this.#descriptionContainer.classList.toggle("loading", value);
}
#toggleError(value) {
if (!this.#uiManager) {
return;
}
this.#dialog.classList.toggle("error", value);
}
async #toggleGuessAltText(value, isInitial = false) {
if (!this.#uiManager) {
return;
}
this.#dialog.classList.toggle("aiDisabled", !value);
this.#createAutomaticallyButton.setAttribute("aria-pressed", value);
if (value) {
const {
altTextLearnMoreUrl
} = this.#uiManager.mlManager;
if (altTextLearnMoreUrl) {
this.#learnMore.href = altTextLearnMoreUrl;
}
this.#mlGuessAltText(isInitial);
} else {
this.#toggleLoading(false);
this.#isAILoading = false;
this.#toggleTitleAndDisclaimer();
}
}
#toggleNotNow() {
this.#notNowButton.classList.toggle("hidden", !this.#firstTime);
this.#cancelButton.classList.toggle("hidden", this.#firstTime);
}
#toggleAI(value) {
if (!this.#uiManager || this.#hasAI === value) {
return;
}
this.#hasAI = value;
this.#dialog.classList.toggle("noAi", !value);
this.#toggleTitleAndDisclaimer();
}
#toggleTitleAndDisclaimer() {
const visible = this.#isAILoading || this.#guessedAltText && this.#guessedAltText === this.#textarea.value;
this.#disclaimer.hidden = !visible;
const isEditing = this.#isAILoading || !!this.#textarea.value;
if (this.#isEditing === isEditing) {
return;
}
this.#isEditing = isEditing;
this.#title.setAttribute("data-l10n-id", isEditing ? "pdfjs-editor-new-alt-text-dialog-edit-label" : "pdfjs-editor-new-alt-text-dialog-add-label");
}
async #mlGuessAltText(isInitial) {
if (this.#isAILoading) {
return;
}
if (this.#textarea.value) {
return;
}
if (isInitial && this.#previousAltText !== null) {
return;
}
this.#guessedAltText = this.#currentEditor.guessedAltText;
if (this.#previousAltText === null && this.#guessedAltText) {
this.#addAltText(this.#guessedAltText);
return;
}
this.#toggleLoading(true);
this.#toggleTitleAndDisclaimer();
let hasError = false;
try {
const altText = await this.#currentEditor.mlGuessAltText(this.#imageData, false);
if (altText) {
this.#guessedAltText = altText;
this.#wasAILoading = this.#isAILoading;
if (this.#isAILoading) {
this.#addAltText(altText);
}
}
} catch (e) {
console.error(e);
hasError = true;
}
this.#toggleLoading(false);
this.#toggleTitleAndDisclaimer();
if (hasError && this.#uiManager) {
this.#toggleError(true);
}
}
#addAltText(altText) {
if (!this.#uiManager || this.#textarea.value) {
return;
}
this.#textarea.value = altText;
this.#toggleTitleAndDisclaimer();
}
#setProgress() {
this.#downloadModel.classList.toggle("hidden", false);
const callback = async ({
detail: {
finished,
total,
totalLoaded
}
}) => {
const ONE_MEGA_BYTES = 1e6;
totalLoaded = Math.min(0.99 * total, totalLoaded);
const totalSize = this.#downloadModelDescription.ariaValueMax = Math.round(total / ONE_MEGA_BYTES);
const downloadedSize = this.#downloadModelDescription.ariaValueNow = Math.round(totalLoaded / ONE_MEGA_BYTES);
this.#downloadModelDescription.setAttribute("data-l10n-args", JSON.stringify({
totalSize,
downloadedSize
}));
if (!finished) {
return;
}
this.#eventBus._off("loadaiengineprogress", callback);
this.#downloadModel.classList.toggle("hidden", true);
this.#toggleAI(true);
if (!this.#uiManager) {
return;
}
const {
mlManager
} = this.#uiManager;
mlManager.toggleService("altText", true);
this.#toggleGuessAltText(await mlManager.isEnabledFor("altText"), true);
};
this.#eventBus._on("loadaiengineprogress", callback);
}
async editAltText(uiManager, editor, firstTime) {
if (this.#currentEditor || !editor) {
return;
}
if (firstTime && editor.hasAltTextData()) {
editor.altTextFinish();
return;
}
this.#firstTime = firstTime;
let {
mlManager
} = uiManager;
let hasAI = !!mlManager;
this.#toggleTitleAndDisclaimer();
if (mlManager && !mlManager.isReady("altText")) {
hasAI = false;
if (mlManager.hasProgress) {
this.#setProgress();
} else {
mlManager = null;
}
} else {
this.#downloadModel.classList.toggle("hidden", true);
}
const isAltTextEnabledPromise = mlManager?.isEnabledFor("altText");
this.#currentEditor = editor;
this.#uiManager = uiManager;
this.#uiManager.removeEditListeners();
({
altText: this.#previousAltText
} = editor.altTextData);
this.#textarea.value = this.#previousAltText ?? "";
const AI_MAX_IMAGE_DIMENSION = 224;
const MAX_PREVIEW_DIMENSION = 180;
let canvas, width, height;
if (mlManager) {
({
canvas,
width,
height,
imageData: this.#imageData
} = editor.copyCanvas(AI_MAX_IMAGE_DIMENSION, MAX_PREVIEW_DIMENSION, true));
if (hasAI) {
this.#toggleGuessAltText(await isAltTextEnabledPromise, true);
}
} else {
({
canvas,
width,
height
} = editor.copyCanvas(AI_MAX_IMAGE_DIMENSION, MAX_PREVIEW_DIMENSION, false));
}
canvas.setAttribute("role", "presentation");
const {
style
} = canvas;
style.width = `${width}px`;
style.height = `${height}px`;
this.#imagePreview.append(canvas);
this.#toggleNotNow();
this.#toggleAI(hasAI);
this.#toggleError(false);
try {
await this.#overlayManager.open(this.#dialog);
} catch (ex) {
this.#close();
throw ex;
}
}
#cancel() {
this.#currentEditor.altTextData = {
cancel: true
};
const altText = this.#textarea.value.trim();
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.alt_text.dismiss",
data: {
alt_text_type: altText ? "present" : "empty",
flow: this.#firstTime ? "image_add" : "alt_text_edit"
}
});
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.image_added",
data: {
alt_text_modal: true,
alt_text_type: "skipped"
}
});
this.#finish();
}
#finish() {
if (this.#overlayManager.active === this.#dialog) {
this.#overlayManager.close(this.#dialog);
}
}
#close() {
const canvas = this.#imagePreview.firstChild;
canvas.remove();
canvas.width = canvas.height = 0;
this.#imageData = null;
this.#toggleLoading(false);
this.#uiManager?.addEditListeners();
this.#currentEditor.altTextFinish();
this.#uiManager?.setSelected(this.#currentEditor);
this.#currentEditor = null;
this.#uiManager = null;
}
#extractWords(text) {
return new Set(text.toLowerCase().split(/[^\p{L}\p{N}]+/gu).filter(x => !!x));
}
#save() {
const altText = this.#textarea.value.trim();
this.#currentEditor.altTextData = {
altText,
decorative: false
};
this.#currentEditor.altTextData.guessedAltText = this.#guessedAltText;
if (this.#guessedAltText && this.#guessedAltText !== altText) {
const guessedWords = this.#extractWords(this.#guessedAltText);
const words = this.#extractWords(altText);
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.alt_text.user_edit",
data: {
total_words: guessedWords.size,
words_removed: guessedWords.difference(words).size,
words_added: words.difference(guessedWords).size
}
});
}
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.image_added",
data: {
alt_text_modal: true,
alt_text_type: altText ? "present" : "empty"
}
});
this.#currentEditor._reportTelemetry({
action: "pdfjs.image.alt_text.save",
data: {
alt_text_type: altText ? "present" : "empty",
flow: this.#firstTime ? "image_add" : "alt_text_edit"
}
});
this.#finish();
}
destroy() {
this.#uiManager = null;
this.#finish();
}
}
class ImageAltTextSettings {
#aiModelSettings;
#createModelButton;
#downloadModelButton;
#dialog;
#eventBus;
#mlManager;
#overlayManager;
#showAltTextDialogButton;
constructor({
dialog,
createModelButton,
aiModelSettings,
learnMore,
closeButton,
deleteModelButton,
downloadModelButton,
showAltTextDialogButton
}, overlayManager, eventBus, mlManager) {
this.#dialog = dialog;
this.#aiModelSettings = aiModelSettings;
this.#createModelButton = createModelButton;
this.#downloadModelButton = downloadModelButton;
this.#showAltTextDialogButton = showAltTextDialogButton;
this.#overlayManager = overlayManager;
this.#eventBus = eventBus;
this.#mlManager = mlManager;
const {
altTextLearnMoreUrl
} = mlManager;
if (altTextLearnMoreUrl) {
learnMore.href = altTextLearnMoreUrl;
}
dialog.addEventListener("contextmenu", noContextMenu);
createModelButton.addEventListener("click", async e => {
const checked = this.#togglePref("enableGuessAltText", e);
await mlManager.toggleService("altText", checked);
this.#reportTelemetry({
type: "stamp",
action: "pdfjs.image.alt_text.settings_ai_generation_check",
data: {
status: checked
}
});
});
showAltTextDialogButton.addEventListener("click", e => {
const checked = this.#togglePref("enableNewAltTextWhenAddingImage", e);
this.#reportTelemetry({
type: "stamp",
action: "pdfjs.image.alt_text.settings_edit_alt_text_check",
data: {
status: checked
}
});
});
deleteModelButton.addEventListener("click", this.#delete.bind(this, true));
downloadModelButton.addEventListener("click", this.#download.bind(this, true));
closeButton.addEventListener("click", this.#finish.bind(this));
learnMore.addEventListener("click", () => {
this.#reportTelemetry({
type: "stamp",
action: "pdfjs.image.alt_text.info",
data: {
topic: "ai_generation"
}
});
});
eventBus._on("enablealttextmodeldownload", ({
value
}) => {
if (value) {
this.#download(false);
} else {
this.#delete(false);
}
});
this.#overlayManager.register(dialog);
}
#reportTelemetry(data) {
this.#eventBus.dispatch("reporttelemetry", {
source: this,
details: {
type: "editing",
data
}
});
}
async #download(isFromUI = false) {
if (isFromUI) {
this.#downloadModelButton.disabled = true;
const span = this.#downloadModelButton.firstChild;
span.setAttribute("data-l10n-id", "pdfjs-editor-alt-text-settings-downloading-model-button");
await this.#mlManager.downloadModel("altText");
span.setAttribute("data-l10n-id", "pdfjs-editor-alt-text-settings-download-model-button");
this.#createModelButton.disabled = false;
this.#setPref("enableGuessAltText", true);
this.#mlManager.toggleService("altText", true);
this.#setPref("enableAltTextModelDownload", true);
this.#downloadModelButton.disabled = false;
}
this.#aiModelSettings.classList.toggle("download", false);
this.#createModelButton.setAttribute("aria-pressed", true);
}
async #delete(isFromUI = false) {
if (isFromUI) {
await this.#mlManager.deleteModel("altText");
this.#setPref("enableGuessAltText", false);
this.#setPref("enableAltTextModelDownload", false);
}
this.#aiModelSettings.classList.toggle("download", true);
this.#createModelButton.disabled = true;
this.#createModelButton.setAttribute("aria-pressed", false);
}
async open({
enableGuessAltText,
enableNewAltTextWhenAddingImage
}) {
const {
enableAltTextModelDownload
} = this.#mlManager;
this.#createModelButton.disabled = !enableAltTextModelDownload;
this.#createModelButton.setAttribute("aria-pressed", enableAltTextModelDownload && enableGuessAltText);
this.#showAltTextDialogButton.setAttribute("aria-pressed", enableNewAltTextWhenAddingImage);
this.#aiModelSettings.classList.toggle("download", !enableAltTextModelDownload);
await this.#overlayManager.open(this.#dialog);
this.#reportTelemetry({
type: "stamp",
action: "pdfjs.image.alt_text.settings_displayed"
});
}
#togglePref(name, {
target
}) {
const checked = target.getAttribute("aria-pressed") !== "true";
this.#setPref(name, checked);
target.setAttribute("aria-pressed", checked);
return checked;
}
#setPref(name, value) {
this.#eventBus.dispatch("setpreference", {
source: this,
name,
value
});
}
#finish() {
if (this.#overlayManager.active === this.#dialog) {
this.#overlayManager.close(this.#dialog);
}
}
}
;// ./web/alt_text_manager.js
class AltTextManager {
#clickAC = null;
#currentEditor = null;
#cancelButton;
#dialog;
#eventBus;
#hasUsedPointer = false;
#optionDescription;
#optionDecorative;
#overlayManager;
#saveButton;
#textarea;
#uiManager;
#previousAltText = null;
#resizeAC = null;
#svgElement = null;
#rectElement = null;
#container;
#telemetryData = null;
constructor({
dialog,
optionDescription,
optionDecorative,
textarea,
cancelButton,
saveButton
}, container, overlayManager, eventBus) {
this.#dialog = dialog;
this.#optionDescription = optionDescription;
this.#optionDecorative = optionDecorative;
this.#textarea = textarea;
this.#cancelButton = cancelButton;
this.#saveButton = saveButton;
this.#overlayManager = overlayManager;
this.#eventBus = eventBus;
this.#container = container;
const onUpdateUIState = this.#updateUIState.bind(this);
dialog.addEventListener("close", this.#close.bind(this));
dialog.addEventListener("contextmenu", event => {
if (event.target !== this.#textarea) {
event.preventDefault();
}
});
cancelButton.addEventListener("click", this.#finish.bind(this));
saveButton.addEventListener("click", this.#save.bind(this));
optionDescription.addEventListener("change", onUpdateUIState);
optionDecorative.addEventListener("change", onUpdateUIState);
this.#overlayManager.register(dialog);
}
#createSVGElement() {
if (this.#svgElement) {
return;
}
const svgFactory = new DOMSVGFactory();
const svg = this.#svgElement = svgFactory.createElement("svg");
svg.setAttribute("width", "0");
svg.setAttribute("height", "0");
const defs = svgFactory.createElement("defs");
svg.append(defs);
const mask = svgFactory.createElement("mask");
defs.append(mask);
mask.setAttribute("id", "alttext-manager-mask");
mask.setAttribute("maskContentUnits", "objectBoundingBox");
let rect = svgFactory.createElement("rect");
mask.append(rect);
rect.setAttribute("fill", "white");
rect.setAttribute("width", "1");
rect.setAttribute("height", "1");
rect.setAttribute("x", "0");
rect.setAttribute("y", "0");
rect = this.#rectElement = svgFactory.createElement("rect");
mask.append(rect);
rect.setAttribute("fill", "black");
this.#dialog.append(svg);
}
async editAltText(uiManager, editor) {
if (this.#currentEditor || !editor) {
return;
}
this.#createSVGElement();
this.#hasUsedPointer = false;
this.#clickAC = new AbortController();
const clickOpts = {
signal: this.#clickAC.signal
},
onClick = this.#onClick.bind(this);
for (const element of [this.#optionDescription, this.#optionDecorative, this.#textarea, this.#saveButton, this.#cancelButton]) {
element.addEventListener("click", onClick, clickOpts);
}
const {
altText,
decorative
} = editor.altTextData;
if (decorative === true) {
this.#optionDecorative.checked = true;
this.#optionDescription.checked = false;
} else {
this.#optionDecorative.checked = false;
this.#optionDescription.checked = true;
}
this.#previousAltText = this.#textarea.value = altText?.trim() || "";
this.#updateUIState();
this.#currentEditor = editor;
this.#uiManager = uiManager;
this.#uiManager.removeEditListeners();
this.#resizeAC = new AbortController();
this.#eventBus._on("resize", this.#setPosition.bind(this), {
signal: this.#resizeAC.signal
});
try {
await this.#overlayManager.open(this.#dialog);
this.#setPosition();
} catch (ex) {
this.#close();
throw ex;
}
}
#setPosition() {
if (!this.#currentEditor) {
return;
}
const dialog = this.#dialog;
const {
style
} = dialog;
const {
x: containerX,
y: containerY,
width: containerW,
height: containerH
} = this.#container.getBoundingClientRect();
const {
innerWidth: windowW,
innerHeight: windowH
} = window;
const {
width: dialogW,
height: dialogH
} = dialog.getBoundingClientRect();
const {
x,
y,
width,
height
} = this.#currentEditor.getClientDimensions();
const MARGIN = 10;
const isLTR = this.#uiManager.direction === "ltr";
const xs = Math.max(x, containerX);
const xe = Math.min(x + width, containerX + containerW);
const ys = Math.max(y, containerY);
const ye = Math.min(y + height, containerY + containerH);
this.#rectElement.setAttribute("width", `${(xe - xs) / windowW}`);
this.#rectElement.setAttribute("height", `${(ye - ys) / windowH}`);
this.#rectElement.setAttribute("x", `${xs / windowW}`);
this.#rectElement.setAttribute("y", `${ys / windowH}`);
let left = null;
let top = Math.max(y, 0);
top += Math.min(windowH - (top + dialogH), 0);
if (isLTR) {
if (x + width + MARGIN + dialogW < windowW) {
left = x + width + MARGIN;
} else if (x > dialogW + MARGIN) {
left = x - dialogW - MARGIN;
}
} else if (x > dialogW + MARGIN) {
left = x - dialogW - MARGIN;
} else if (x + width + MARGIN + dialogW < windowW) {
left = x + width + MARGIN;
}
if (left === null) {
top = null;
left = Math.max(x, 0);
left += Math.min(windowW - (left + dialogW), 0);
if (y > dialogH + MARGIN) {
top = y - dialogH - MARGIN;
} else if (y + height + MARGIN + dialogH < windowH) {
top = y + height + MARGIN;
}
}
if (top !== null) {
dialog.classList.add("positioned");
if (isLTR) {
style.left = `${left}px`;
} else {
style.right = `${windowW - left - dialogW}px`;
}
style.top = `${top}px`;
} else {
dialog.classList.remove("positioned");
style.left = "";
style.top = "";
}
}
#finish() {
if (this.#overlayManager.active === this.#dialog) {
this.#overlayManager.close(this.#dialog);
}
}
#close() {
this.#currentEditor._reportTelemetry(this.#telemetryData || {
action: "alt_text_cancel",
alt_text_keyboard: !this.#hasUsedPointer
});
this.#telemetryData = null;
this.#removeOnClickListeners();
this.#uiManager?.addEditListeners();
this.#resizeAC?.abort();
this.#resizeAC = null;
this.#currentEditor.altTextFinish();
this.#currentEditor = null;
this.#uiManager = null;
}
#updateUIState() {
this.#textarea.disabled = this.#optionDecorative.checked;
}
#save() {
const altText = this.#textarea.value.trim();
const decorative = this.#optionDecorative.checked;
this.#currentEditor.altTextData = {
altText,
decorative
};
this.#telemetryData = {
action: "alt_text_save",
alt_text_description: !!altText,
alt_text_edit: !!this.#previousAltText && this.#previousAltText !== altText,
alt_text_decorative: decorative,
alt_text_keyboard: !this.#hasUsedPointer
};
this.#finish();
}
#onClick(evt) {
if (evt.detail === 0) {
return;
}
this.#hasUsedPointer = true;
this.#removeOnClickListeners();
}
#removeOnClickListeners() {
this.#clickAC?.abort();
this.#clickAC = null;
}
destroy() {
this.#uiManager = null;
this.#finish();
this.#svgElement?.remove();
this.#svgElement = this.#rectElement = null;
}
}
;// ./web/annotation_editor_params.js
class AnnotationEditorParams {
constructor(options, eventBus) {
this.eventBus = eventBus;
this.#bindListeners(options);
}
#bindListeners({
editorFreeTextFontSize,
editorFreeTextColor,
editorInkColor,
editorInkThickness,
editorInkOpacity,
editorStampAddImage,
editorFreeHighlightThickness,
editorHighlightShowAll
}) {
const dispatchEvent = (typeStr, value) => {
this.eventBus.dispatch("switchannotationeditorparams", {
source: this,
type: AnnotationEditorParamsType[typeStr],
value
});
};
editorFreeTextFontSize.addEventListener("input", function () {
dispatchEvent("FREETEXT_SIZE", this.valueAsNumber);
});
editorFreeTextColor.addEventListener("input", function () {
dispatchEvent("FREETEXT_COLOR", this.value);
});
editorInkColor.addEventListener("input", function () {
dispatchEvent("INK_COLOR", this.value);
});
editorInkThickness.addEventListener("input", function () {
dispatchEvent("INK_THICKNESS", this.valueAsNumber);
});
editorInkOpacity.addEventListener("input", function () {
dispatchEvent("INK_OPACITY", this.valueAsNumber);
});
editorStampAddImage.addEventListener("click", () => {
this.eventBus.dispatch("reporttelemetry", {
source: this,
details: {
type: "editing",
data: {
action: "pdfjs.image.add_image_click"
}
}
});
dispatchEvent("CREATE");
});
editorFreeHighlightThickness.addEventListener("input", function () {
dispatchEvent("HIGHLIGHT_THICKNESS", this.valueAsNumber);
});
editorHighlightShowAll.addEventListener("click", function () {
const checked = this.getAttribute("aria-pressed") === "true";
this.setAttribute("aria-pressed", !checked);
dispatchEvent("HIGHLIGHT_SHOW_ALL", !checked);
});
this.eventBus._on("annotationeditorparamschanged", evt => {
for (const [type, value] of evt.details) {
switch (type) {
case AnnotationEditorParamsType.FREETEXT_SIZE:
editorFreeTextFontSize.value = value;
break;
case AnnotationEditorParamsType.FREETEXT_COLOR:
editorFreeTextColor.value = value;
break;
case AnnotationEditorParamsType.INK_COLOR:
editorInkColor.value = value;
break;
case AnnotationEditorParamsType.INK_THICKNESS:
editorInkThickness.value = value;
break;
case AnnotationEditorParamsType.INK_OPACITY:
editorInkOpacity.value = value;
break;
case AnnotationEditorParamsType.HIGHLIGHT_THICKNESS:
editorFreeHighlightThickness.value = value;
break;
case AnnotationEditorParamsType.HIGHLIGHT_FREE:
editorFreeHighlightThickness.disabled = !value;
break;
case AnnotationEditorParamsType.HIGHLIGHT_SHOW_ALL:
editorHighlightShowAll.setAttribute("aria-pressed", value);
break;
}
}
});
}
}
;// ./web/caret_browsing.js
const PRECISION = 1e-1;
class CaretBrowsingMode {
#mainContainer;
#toolBarHeight = 0;
#viewerContainer;
constructor(abortSignal, mainContainer, viewerContainer, toolbarContainer) {
this.#mainContainer = mainContainer;
this.#viewerContainer = viewerContainer;
if (!toolbarContainer) {
return;
}
this.#toolBarHeight = toolbarContainer.getBoundingClientRect().height;
const toolbarObserver = new ResizeObserver(entries => {
for (const entry of entries) {
if (entry.target === toolbarContainer) {
this.#toolBarHeight = Math.floor(entry.borderBoxSize[0].blockSize);
break;
}
}
});
toolbarObserver.observe(toolbarContainer);
abortSignal.addEventListener("abort", () => toolbarObserver.disconnect(), {
once: true
});
}
#isOnSameLine(rect1, rect2) {
const top1 = rect1.y;
const bot1 = rect1.bottom;
const mid1 = rect1.y + rect1.height / 2;
const top2 = rect2.y;
const bot2 = rect2.bottom;
const mid2 = rect2.y + rect2.height / 2;
return top1 <= mid2 && mid2 <= bot1 || top2 <= mid1 && mid1 <= bot2;
}
#isUnderOver(rect, x, y, isUp) {
const midY = rect.y + rect.height / 2;
return (isUp ? y >= midY : y <= midY) && rect.x - PRECISION <= x && x <= rect.right + PRECISION;
}
#isVisible(rect) {
return rect.top >= this.#toolBarHeight && rect.left >= 0 && rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && rect.right <= (window.innerWidth || document.documentElement.clientWidth);
}
#getCaretPosition(selection, isUp) {
const {
focusNode,
focusOffset
} = selection;
const range = document.createRange();
range.setStart(focusNode, focusOffset);
range.setEnd(focusNode, focusOffset);
const rect = range.getBoundingClientRect();
return [rect.x, isUp ? rect.top : rect.bottom];
}
static #caretPositionFromPoint(x, y) {
return document.caretPositionFromPoint(x, y);
}
#setCaretPositionHelper(selection, caretX, select, element, rect) {
rect ||= element.getBoundingClientRect();
if (caretX <= rect.x + PRECISION) {
if (select) {
selection.extend(element.firstChild, 0);
} else {
selection.setPosition(element.firstChild, 0);
}
return;
}
if (rect.right - PRECISION <= caretX) {
const {
lastChild
} = element;
if (select) {
selection.extend(lastChild, lastChild.length);
} else {
selection.setPosition(lastChild, lastChild.length);
}
return;
}
const midY = rect.y + rect.height / 2;
let caretPosition = CaretBrowsingMode.#caretPositionFromPoint(caretX, midY);
let parentElement = caretPosition.offsetNode?.parentElement;
if (parentElement && parentElement !== element) {
const elementsAtPoint = document.elementsFromPoint(caretX, midY);
const savedVisibilities = [];
for (const el of elementsAtPoint) {
if (el === element) {
break;
}
const {
style
} = el;
savedVisibilities.push([el, style.visibility]);
style.visibility = "hidden";
}
caretPosition = CaretBrowsingMode.#caretPositionFromPoint(caretX, midY);
parentElement = caretPosition.offsetNode?.parentElement;
for (const [el, visibility] of savedVisibilities) {
el.style.visibility = visibility;
}
}
if (parentElement !== element) {
if (select) {
selection.extend(element.firstChild, 0);
} else {
selection.setPosition(element.firstChild, 0);
}
return;
}
if (select) {
selection.extend(caretPosition.offsetNode, caretPosition.offset);
} else {
selection.setPosition(caretPosition.offsetNode, caretPosition.offset);
}
}
#setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX) {
if (this.#isVisible(newLineElementRect)) {
this.#setCaretPositionHelper(selection, caretX, select, newLineElement, newLineElementRect);
return;
}
this.#mainContainer.addEventListener("scrollend", this.#setCaretPositionHelper.bind(this, selection, caretX, select, newLineElement, null), {
once: true
});
newLineElement.scrollIntoView();
}
#getNodeOnNextPage(textLayer, isUp) {
while (true) {
const page = textLayer.closest(".page");
const pageNumber = parseInt(page.getAttribute("data-page-number"));
const nextPage = isUp ? pageNumber - 1 : pageNumber + 1;
textLayer = this.#viewerContainer.querySelector(`.page[data-page-number="${nextPage}"] .textLayer`);
if (!textLayer) {
return null;
}
const walker = document.createTreeWalker(textLayer, NodeFilter.SHOW_TEXT);
const node = isUp ? walker.lastChild() : walker.firstChild();
if (node) {
return node;
}
}
}
moveCaret(isUp, select) {
const selection = document.getSelection();
if (selection.rangeCount === 0) {
return;
}
const {
focusNode
} = selection;
const focusElement = focusNode.nodeType !== Node.ELEMENT_NODE ? focusNode.parentElement : focusNode;
const root = focusElement.closest(".textLayer");
if (!root) {
return;
}
const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT);
walker.currentNode = focusNode;
const focusRect = focusElement.getBoundingClientRect();
let newLineElement = null;
const nodeIterator = (isUp ? walker.previousSibling : walker.nextSibling).bind(walker);
while (nodeIterator()) {
const element = walker.currentNode.parentElement;
if (!this.#isOnSameLine(focusRect, element.getBoundingClientRect())) {
newLineElement = element;
break;
}
}
if (!newLineElement) {
const node = this.#getNodeOnNextPage(root, isUp);
if (!node) {
return;
}
if (select) {
const lastNode = (isUp ? walker.firstChild() : walker.lastChild()) || focusNode;
selection.extend(lastNode, isUp ? 0 : lastNode.length);
const range = document.createRange();
range.setStart(node, isUp ? node.length : 0);
range.setEnd(node, isUp ? node.length : 0);
selection.addRange(range);
return;
}
const [caretX] = this.#getCaretPosition(selection, isUp);
const {
parentElement
} = node;
this.#setCaretPosition(select, selection, parentElement, parentElement.getBoundingClientRect(), caretX);
return;
}
const [caretX, caretY] = this.#getCaretPosition(selection, isUp);
const newLineElementRect = newLineElement.getBoundingClientRect();
if (this.#isUnderOver(newLineElementRect, caretX, caretY, isUp)) {
this.#setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX);
return;
}
while (nodeIterator()) {
const element = walker.currentNode.parentElement;
const elementRect = element.getBoundingClientRect();
if (!this.#isOnSameLine(newLineElementRect, elementRect)) {
break;
}
if (this.#isUnderOver(elementRect, caretX, caretY, isUp)) {
this.#setCaretPosition(select, selection, element, elementRect, caretX);
return;
}
}
this.#setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX);
}
}
;// ./web/editor_undo_bar.js
class EditorUndoBar {
#closeButton = null;
#container;
#eventBus = null;
#focusTimeout = null;
#initController = null;
isOpen = false;
#message;
#showController = null;
#undoButton;
static #l10nMessages = Object.freeze({
highlight: "pdfjs-editor-undo-bar-message-highlight",
freetext: "pdfjs-editor-undo-bar-message-freetext",
stamp: "pdfjs-editor-undo-bar-message-stamp",
ink: "pdfjs-editor-undo-bar-message-ink",
_multiple: "pdfjs-editor-undo-bar-message-multiple"
});
constructor({
container,
message,
undoButton,
closeButton
}, eventBus) {
this.#container = container;
this.#message = message;
this.#undoButton = undoButton;
this.#closeButton = closeButton;
this.#eventBus = eventBus;
}
destroy() {
this.#initController?.abort();
this.#initController = null;
this.hide();
}
show(undoAction, messageData) {
if (!this.#initController) {
this.#initController = new AbortController();
const opts = {
signal: this.#initController.signal
};
const boundHide = this.hide.bind(this);
this.#container.addEventListener("contextmenu", noContextMenu, opts);
this.#closeButton.addEventListener("click", boundHide, opts);
this.#eventBus._on("beforeprint", boundHide, opts);
this.#eventBus._on("download", boundHide, opts);
}
this.hide();
if (typeof messageData === "string") {
this.#message.setAttribute("data-l10n-id", EditorUndoBar.#l10nMessages[messageData]);
} else {
this.#message.setAttribute("data-l10n-id", EditorUndoBar.#l10nMessages._multiple);
this.#message.setAttribute("data-l10n-args", JSON.stringify({
count: messageData
}));
}
this.isOpen = true;
this.#container.hidden = false;
this.#showController = new AbortController();
this.#undoButton.addEventListener("click", () => {
undoAction();
this.hide();
}, {
signal: this.#showController.signal
});
this.#focusTimeout = setTimeout(() => {
this.#container.focus();
this.#focusTimeout = null;
}, 100);
}
hide() {
if (!this.isOpen) {
return;
}
this.isOpen = false;
this.#container.hidden = true;
this.#showController?.abort();
this.#showController = null;
if (this.#focusTimeout) {
clearTimeout(this.#focusTimeout);
this.#focusTimeout = null;
}
}
}
;// ./web/overlay_manager.js
class OverlayManager {
#overlays = new WeakMap();
#active = null;
get active() {
return this.#active;
}
async register(dialog, canForceClose = false) {
if (typeof dialog !== "object") {
throw new Error("Not enough parameters.");
} else if (this.#overlays.has(dialog)) {
throw new Error("The overlay is already registered.");
}
this.#overlays.set(dialog, {
canForceClose
});
dialog.addEventListener("cancel", evt => {
this.#active = null;
});
}
async open(dialog) {
if (!this.#overlays.has(dialog)) {
throw new Error("The overlay does not exist.");
} else if (this.#active) {
if (this.#active === dialog) {
throw new Error("The overlay is already active.");
} else if (this.#overlays.get(dialog).canForceClose) {
await this.close();
} else {
throw new Error("Another overlay is currently active.");
}
}
this.#active = dialog;
dialog.showModal();
}
async close(dialog = this.#active) {
if (!this.#overlays.has(dialog)) {
throw new Error("The overlay does not exist.");
} else if (!this.#active) {
throw new Error("The overlay is currently not active.");
} else if (this.#active !== dialog) {
throw new Error("Another overlay is currently active.");
}
dialog.close();
this.#active = null;
}
}
;// ./web/password_prompt.js
class PasswordPrompt {
#activeCapability = null;
#updateCallback = null;
#reason = null;
constructor(options, overlayManager, isViewerEmbedded = false) {
this.dialog = options.dialog;
this.label = options.label;
this.input = options.input;
this.submitButton = options.submitButton;
this.cancelButton = options.cancelButton;
this.overlayManager = overlayManager;
this._isViewerEmbedded = isViewerEmbedded;
this.submitButton.addEventListener("click", this.#verify.bind(this));
this.cancelButton.addEventListener("click", this.close.bind(this));
this.input.addEventListener("keydown", e => {
if (e.keyCode === 13) {
this.#verify();
}
});
this.overlayManager.register(this.dialog, true);
this.dialog.addEventListener("close", this.#cancel.bind(this));
}
async open() {
await this.#activeCapability?.promise;
this.#activeCapability = Promise.withResolvers();
try {
await this.overlayManager.open(this.dialog);
} catch (ex) {
this.#activeCapability.resolve();
throw ex;
}
const passwordIncorrect = this.#reason === PasswordResponses.INCORRECT_PASSWORD;
if (!this._isViewerEmbedded || passwordIncorrect) {
this.input.focus();
}
this.label.setAttribute("data-l10n-id", passwordIncorrect ? "pdfjs-password-invalid" : "pdfjs-password-label");
}
async close() {
if (this.overlayManager.active === this.dialog) {
this.overlayManager.close(this.dialog);
}
}
#verify() {
const password = this.input.value;
if (password?.length > 0) {
this.#invokeCallback(password);
}
}
#cancel() {
this.#invokeCallback(new Error("PasswordPrompt cancelled."));
this.#activeCapability.resolve();
}
#invokeCallback(password) {
if (!this.#updateCallback) {
return;
}
this.close();
this.input.value = "";
this.#updateCallback(password);
this.#updateCallback = null;
}
async setUpdateCallback(updateCallback, reason) {
if (this.#activeCapability) {
await this.#activeCapability.promise;
}
this.#updateCallback = updateCallback;
this.#reason = reason;
}
}
;// ./web/base_tree_viewer.js
const TREEITEM_OFFSET_TOP = -100;
const TREEITEM_SELECTED_CLASS = "selected";
class BaseTreeViewer {
constructor(options) {
this.container = options.container;
this.eventBus = options.eventBus;
this._l10n = options.l10n;
this.reset();
}
reset() {
this._pdfDocument = null;
this._lastToggleIsShow = true;
this._currentTreeItem = null;
this.container.textContent = "";
this.container.classList.remove("treeWithDeepNesting");
}
_dispatchEvent(count) {
throw new Error("Not implemented: _dispatchEvent");
}
_bindLink(element, params) {
throw new Error("Not implemented: _bindLink");
}
_normalizeTextContent(str) {
return removeNullCharacters(str, true) || "\u2013";
}
_addToggleButton(div, hidden = false) {
const toggler = document.createElement("div");
toggler.className = "treeItemToggler";
if (hidden) {
toggler.classList.add("treeItemsHidden");
}
toggler.onclick = evt => {
evt.stopPropagation();
toggler.classList.toggle("treeItemsHidden");
if (evt.shiftKey) {
const shouldShowAll = !toggler.classList.contains("treeItemsHidden");
this._toggleTreeItem(div, shouldShowAll);
}
};
div.prepend(toggler);
}
_toggleTreeItem(root, show = false) {
this._l10n.pause();
this._lastToggleIsShow = show;
for (const toggler of root.querySelectorAll(".treeItemToggler")) {
toggler.classList.toggle("treeItemsHidden", !show);
}
this._l10n.resume();
}
_toggleAllTreeItems() {
this._toggleTreeItem(this.container, !this._lastToggleIsShow);
}
_finishRendering(fragment, count, hasAnyNesting = false) {
if (hasAnyNesting) {
this.container.classList.add("treeWithDeepNesting");
this._lastToggleIsShow = !fragment.querySelector(".treeItemsHidden");
}
this._l10n.pause();
this.container.append(fragment);
this._l10n.resume();
this._dispatchEvent(count);
}
render(params) {
throw new Error("Not implemented: render");
}
_updateCurrentTreeItem(treeItem = null) {
if (this._currentTreeItem) {
this._currentTreeItem.classList.remove(TREEITEM_SELECTED_CLASS);
this._currentTreeItem = null;
}
if (treeItem) {
treeItem.classList.add(TREEITEM_SELECTED_CLASS);
this._currentTreeItem = treeItem;
}
}
_scrollToCurrentTreeItem(treeItem) {
if (!treeItem) {
return;
}
this._l10n.pause();
let currentNode = treeItem.parentNode;
while (currentNode && currentNode !== this.container) {
if (currentNode.classList.contains("treeItem")) {
const toggler = currentNode.firstElementChild;
toggler?.classList.remove("treeItemsHidden");
}
currentNode = currentNode.parentNode;
}
this._l10n.resume();
this._updateCurrentTreeItem(treeItem);
this.container.scrollTo(treeItem.offsetLeft, treeItem.offsetTop + TREEITEM_OFFSET_TOP);
}
}
;// ./web/pdf_attachment_viewer.js
class PDFAttachmentViewer extends BaseTreeViewer {
constructor(options) {
super(options);
this.downloadManager = options.downloadManager;
this.eventBus._on("fileattachmentannotation", this.#appendAttachment.bind(this));
}
reset(keepRenderedCapability = false) {
super.reset();
this._attachments = null;
if (!keepRenderedCapability) {
this._renderedCapability = Promise.withResolvers();
}
this._pendingDispatchEvent = false;
}
async _dispatchEvent(attachmentsCount) {
this._renderedCapability.resolve();
if (attachmentsCount === 0 && !this._pendingDispatchEvent) {
this._pendingDispatchEvent = true;
await waitOnEventOrTimeout({
target: this.eventBus,
name: "annotationlayerrendered",
delay: 1000
});
if (!this._pendingDispatchEvent) {
return;
}
}
this._pendingDispatchEvent = false;
this.eventBus.dispatch("attachmentsloaded", {
source: this,
attachmentsCount
});
}
_bindLink(element, {
content,
description,
filename
}) {
if (description) {
element.title = description;
}
element.onclick = () => {
this.downloadManager.openOrDownloadData(content, filename);
return false;
};
}
render({
attachments,
keepRenderedCapability = false
}) {
if (this._attachments) {
this.reset(keepRenderedCapability);
}
this._attachments = attachments || null;
if (!attachments) {
this._dispatchEvent(0);
return;
}
const fragment = document.createDocumentFragment();
let attachmentsCount = 0;
for (const name in attachments) {
const item = attachments[name];
const div = document.createElement("div");
div.className = "treeItem";
const element = document.createElement("a");
this._bindLink(element, item);
element.textContent = this._normalizeTextContent(item.filename);
div.append(element);
fragment.append(div);
attachmentsCount++;
}
this._finishRendering(fragment, attachmentsCount);
}
#appendAttachment(item) {
const renderedPromise = this._renderedCapability.promise;
renderedPromise.then(() => {
if (renderedPromise !== this._renderedCapability.promise) {
return;
}
const attachments = this._attachments || Object.create(null);
for (const name in attachments) {
if (item.filename === name) {
return;
}
}
attachments[item.filename] = item;
this.render({
attachments,
keepRenderedCapability: true
});
});
}
}
;// ./web/grab_to_pan.js
const CSS_CLASS_GRAB = "grab-to-pan-grab";
class GrabToPan {
#activateAC = null;
#mouseDownAC = null;
#scrollAC = null;
constructor({
element
}) {
this.element = element;
this.document = element.ownerDocument;
const overlay = this.overlay = document.createElement("div");
overlay.className = "grab-to-pan-grabbing";
}
activate() {
if (!this.#activateAC) {
this.#activateAC = new AbortController();
this.element.addEventListener("mousedown", this.#onMouseDown.bind(this), {
capture: true,
signal: this.#activateAC.signal
});
this.element.classList.add(CSS_CLASS_GRAB);
}
}
deactivate() {
if (this.#activateAC) {
this.#activateAC.abort();
this.#activateAC = null;
this.#endPan();
this.element.classList.remove(CSS_CLASS_GRAB);
}
}
toggle() {
if (this.#activateAC) {
this.deactivate();
} else {
this.activate();
}
}
ignoreTarget(node) {
return node.matches("a[href], a[href] *, input, textarea, button, button *, select, option");
}
#onMouseDown(event) {
if (event.button !== 0 || this.ignoreTarget(event.target)) {
return;
}
if (event.originalTarget) {
try {
event.originalTarget.tagName;
} catch {
return;
}
}
this.scrollLeftStart = this.element.scrollLeft;
this.scrollTopStart = this.element.scrollTop;
this.clientXStart = event.clientX;
this.clientYStart = event.clientY;
this.#mouseDownAC = new AbortController();
const boundEndPan = this.#endPan.bind(this),
mouseOpts = {
capture: true,
signal: this.#mouseDownAC.signal
};
this.document.addEventListener("mousemove", this.#onMouseMove.bind(this), mouseOpts);
this.document.addEventListener("mouseup", boundEndPan, mouseOpts);
this.#scrollAC = new AbortController();
this.element.addEventListener("scroll", boundEndPan, {
capture: true,
signal: this.#scrollAC.signal
});
stopEvent(event);
const focusedElement = document.activeElement;
if (focusedElement && !focusedElement.contains(event.target)) {
focusedElement.blur();
}
}
#onMouseMove(event) {
this.#scrollAC?.abort();
this.#scrollAC = null;
if (!(event.buttons & 1)) {
this.#endPan();
return;
}
const xDiff = event.clientX - this.clientXStart;
const yDiff = event.clientY - this.clientYStart;
this.element.scrollTo({
top: this.scrollTopStart - yDiff,
left: this.scrollLeftStart - xDiff,
behavior: "instant"
});
if (!this.overlay.parentNode) {
document.body.append(this.overlay);
}
}
#endPan() {
this.#mouseDownAC?.abort();
this.#mouseDownAC = null;
this.#scrollAC?.abort();
this.#scrollAC = null;
this.overlay.remove();
}
}
;// ./web/pdf_cursor_tools.js
class PDFCursorTools {
#active = CursorTool.SELECT;
#prevActive = null;
constructor({
container,
eventBus,
cursorToolOnLoad = CursorTool.SELECT
}) {
this.container = container;
this.eventBus = eventBus;
this.#addEventListeners();
Promise.resolve().then(() => {
this.switchTool(cursorToolOnLoad);
});
}
get activeTool() {
return this.#active;
}
switchTool(tool) {
if (this.#prevActive !== null) {
return;
}
this.#switchTool(tool);
}
#switchTool(tool, disabled = false) {
if (tool === this.#active) {
if (this.#prevActive !== null) {
this.eventBus.dispatch("cursortoolchanged", {
source: this,
tool,
disabled
});
}
return;
}
const disableActiveTool = () => {
switch (this.#active) {
case CursorTool.SELECT:
break;
case CursorTool.HAND:
this._handTool.deactivate();
break;
case CursorTool.ZOOM:
}
};
switch (tool) {
case CursorTool.SELECT:
disableActiveTool();
break;
case CursorTool.HAND:
disableActiveTool();
this._handTool.activate();
break;
case CursorTool.ZOOM:
default:
console.error(`switchTool: "${tool}" is an unsupported value.`);
return;
}
this.#active = tool;
this.eventBus.dispatch("cursortoolchanged", {
source: this,
tool,
disabled
});
}
#addEventListeners() {
this.eventBus._on("switchcursortool", evt => {
if (!evt.reset) {
this.switchTool(evt.tool);
} else if (this.#prevActive !== null) {
annotationEditorMode = AnnotationEditorType.NONE;
presentationModeState = PresentationModeState.NORMAL;
enableActive();
}
});
let annotationEditorMode = AnnotationEditorType.NONE,
presentationModeState = PresentationModeState.NORMAL;
const disableActive = () => {
this.#prevActive ??= this.#active;
this.#switchTool(CursorTool.SELECT, true);
};
const enableActive = () => {
if (this.#prevActive !== null && annotationEditorMode === AnnotationEditorType.NONE && presentationModeState === PresentationModeState.NORMAL) {
this.#switchTool(this.#prevActive);
this.#prevActive = null;
}
};
this.eventBus._on("annotationeditormodechanged", ({
mode
}) => {
annotationEditorMode = mode;
if (mode === AnnotationEditorType.NONE) {
enableActive();
} else {
disableActive();
}
});
this.eventBus._on("presentationmodechanged", ({
state
}) => {
presentationModeState = state;
if (state === PresentationModeState.NORMAL) {
enableActive();
} else if (state === PresentationModeState.FULLSCREEN) {
disableActive();
}
});
}
get _handTool() {
return shadow(this, "_handTool", new GrabToPan({
element: this.container
}));
}
}
;// ./web/pdf_document_properties.js
const NON_METRIC_LOCALES = ["en-us", "en-lr", "my"];
const US_PAGE_NAMES = {
"8.5x11": "pdfjs-document-properties-page-size-name-letter",
"8.5x14": "pdfjs-document-properties-page-size-name-legal"
};
const METRIC_PAGE_NAMES = {
"297x420": "pdfjs-document-properties-page-size-name-a-three",
"210x297": "pdfjs-document-properties-page-size-name-a-four"
};
function getPageName(size, isPortrait, pageNames) {
const width = isPortrait ? size.width : size.height;
const height = isPortrait ? size.height : size.width;
return pageNames[`${width}x${height}`];
}
class PDFDocumentProperties {
#fieldData = null;
constructor({
dialog,
fields,
closeButton
}, overlayManager, eventBus, l10n, fileNameLookup) {
this.dialog = dialog;
this.fields = fields;
this.overlayManager = overlayManager;
this.l10n = l10n;
this._fileNameLookup = fileNameLookup;
this.#reset();
closeButton.addEventListener("click", this.close.bind(this));
this.overlayManager.register(this.dialog);
eventBus._on("pagechanging", evt => {
this._currentPageNumber = evt.pageNumber;
});
eventBus._on("rotationchanging", evt => {
this._pagesRotation = evt.pagesRotation;
});
}
async open() {
await Promise.all([this.overlayManager.open(this.dialog), this._dataAvailableCapability.promise]);
const currentPageNumber = this._currentPageNumber;
const pagesRotation = this._pagesRotation;
if (this.#fieldData && currentPageNumber === this.#fieldData._currentPageNumber && pagesRotation === this.#fieldData._pagesRotation) {
this.#updateUI();
return;
}
const [{
info,
contentLength
}, pdfPage] = await Promise.all([this.pdfDocument.getMetadata(), this.pdfDocument.getPage(currentPageNumber)]);
const [fileName, fileSize, creationDate, modificationDate, pageSize, isLinearized] = await Promise.all([this._fileNameLookup(), this.#parseFileSize(contentLength), this.#parseDate(info.CreationDate), this.#parseDate(info.ModDate), this.#parsePageSize(getPageSizeInches(pdfPage), pagesRotation), this.#parseLinearization(info.IsLinearized)]);
this.#fieldData = Object.freeze({
fileName,
fileSize,
title: info.Title,
author: info.Author,
subject: info.Subject,
keywords: info.Keywords,
creationDate,
modificationDate,
creator: info.Creator,
producer: info.Producer,
version: info.PDFFormatVersion,
pageCount: this.pdfDocument.numPages,
pageSize,
linearized: isLinearized,
_currentPageNumber: currentPageNumber,
_pagesRotation: pagesRotation
});
this.#updateUI();
const {
length
} = await this.pdfDocument.getDownloadInfo();
if (contentLength === length) {
return;
}
const data = Object.assign(Object.create(null), this.#fieldData);
data.fileSize = await this.#parseFileSize(length);
this.#fieldData = Object.freeze(data);
this.#updateUI();
}
async close() {
this.overlayManager.close(this.dialog);
}
setDocument(pdfDocument) {
if (this.pdfDocument) {
this.#reset();
this.#updateUI();
}
if (!pdfDocument) {
return;
}
this.pdfDocument = pdfDocument;
this._dataAvailableCapability.resolve();
}
#reset() {
this.pdfDocument = null;
this.#fieldData = null;
this._dataAvailableCapability = Promise.withResolvers();
this._currentPageNumber = 1;
this._pagesRotation = 0;
}
#updateUI() {
if (this.#fieldData && this.overlayManager.active !== this.dialog) {
return;
}
for (const id in this.fields) {
const content = this.#fieldData?.[id];
this.fields[id].textContent = content || content === 0 ? content : "-";
}
}
async #parseFileSize(b = 0) {
const kb = b / 1024,
mb = kb / 1024;
return kb ? this.l10n.get(mb >= 1 ? "pdfjs-document-properties-size-mb" : "pdfjs-document-properties-size-kb", {
mb,
kb,
b
}) : undefined;
}
async #parsePageSize(pageSizeInches, pagesRotation) {
if (!pageSizeInches) {
return undefined;
}
if (pagesRotation % 180 !== 0) {
pageSizeInches = {
width: pageSizeInches.height,
height: pageSizeInches.width
};
}
const isPortrait = isPortraitOrientation(pageSizeInches),
nonMetric = NON_METRIC_LOCALES.includes(this.l10n.getLanguage());
let sizeInches = {
width: Math.round(pageSizeInches.width * 100) / 100,
height: Math.round(pageSizeInches.height * 100) / 100
};
let sizeMillimeters = {
width: Math.round(pageSizeInches.width * 25.4 * 10) / 10,
height: Math.round(pageSizeInches.height * 25.4 * 10) / 10
};
let nameId = getPageName(sizeInches, isPortrait, US_PAGE_NAMES) || getPageName(sizeMillimeters, isPortrait, METRIC_PAGE_NAMES);
if (!nameId && !(Number.isInteger(sizeMillimeters.width) && Number.isInteger(sizeMillimeters.height))) {
const exactMillimeters = {
width: pageSizeInches.width * 25.4,
height: pageSizeInches.height * 25.4
};
const intMillimeters = {
width: Math.round(sizeMillimeters.width),
height: Math.round(sizeMillimeters.height)
};
if (Math.abs(exactMillimeters.width - intMillimeters.width) < 0.1 && Math.abs(exactMillimeters.height - intMillimeters.height) < 0.1) {
nameId = getPageName(intMillimeters, isPortrait, METRIC_PAGE_NAMES);
if (nameId) {
sizeInches = {
width: Math.round(intMillimeters.width / 25.4 * 100) / 100,
height: Math.round(intMillimeters.height / 25.4 * 100) / 100
};
sizeMillimeters = intMillimeters;
}
}
}
const [{
width,
height
}, unit, name, orientation] = await Promise.all([nonMetric ? sizeInches : sizeMillimeters, this.l10n.get(nonMetric ? "pdfjs-document-properties-page-size-unit-inches" : "pdfjs-document-properties-page-size-unit-millimeters"), nameId && this.l10n.get(nameId), this.l10n.get(isPortrait ? "pdfjs-document-properties-page-size-orientation-portrait" : "pdfjs-document-properties-page-size-orientation-landscape")]);
return this.l10n.get(name ? "pdfjs-document-properties-page-size-dimension-name-string" : "pdfjs-document-properties-page-size-dimension-string", {
width,
height,
unit,
name,
orientation
});
}
async #parseDate(inputDate) {
const dateObj = PDFDateString.toDateObject(inputDate);
return dateObj ? this.l10n.get("pdfjs-document-properties-date-time-string", {
dateObj: dateObj.valueOf()
}) : undefined;
}
#parseLinearization(isLinearized) {
return this.l10n.get(isLinearized ? "pdfjs-document-properties-linearized-yes" : "pdfjs-document-properties-linearized-no");
}
}
;// ./web/pdf_find_utils.js
const CharacterType = {
SPACE: 0,
ALPHA_LETTER: 1,
PUNCT: 2,
HAN_LETTER: 3,
KATAKANA_LETTER: 4,
HIRAGANA_LETTER: 5,
HALFWIDTH_KATAKANA_LETTER: 6,
THAI_LETTER: 7
};
function isAlphabeticalScript(charCode) {
return charCode < 0x2e80;
}
function isAscii(charCode) {
return (charCode & 0xff80) === 0;
}
function isAsciiAlpha(charCode) {
return charCode >= 0x61 && charCode <= 0x7a || charCode >= 0x41 && charCode <= 0x5a;
}
function isAsciiDigit(charCode) {
return charCode >= 0x30 && charCode <= 0x39;
}
function isAsciiSpace(charCode) {
return charCode === 0x20 || charCode === 0x09 || charCode === 0x0d || charCode === 0x0a;
}
function isHan(charCode) {
return charCode >= 0x3400 && charCode <= 0x9fff || charCode >= 0xf900 && charCode <= 0xfaff;
}
function isKatakana(charCode) {
return charCode >= 0x30a0 && charCode <= 0x30ff;
}
function isHiragana(charCode) {
return charCode >= 0x3040 && charCode <= 0x309f;
}
function isHalfwidthKatakana(charCode) {
return charCode >= 0xff60 && charCode <= 0xff9f;
}
function isThai(charCode) {
return (charCode & 0xff80) === 0x0e00;
}
function getCharacterType(charCode) {
if (isAlphabeticalScript(charCode)) {
if (isAscii(charCode)) {
if (isAsciiSpace(charCode)) {
return CharacterType.SPACE;
} else if (isAsciiAlpha(charCode) || isAsciiDigit(charCode) || charCode === 0x5f) {
return CharacterType.ALPHA_LETTER;
}
return CharacterType.PUNCT;
} else if (isThai(charCode)) {
return CharacterType.THAI_LETTER;
} else if (charCode === 0xa0) {
return CharacterType.SPACE;
}
return CharacterType.ALPHA_LETTER;
}
if (isHan(charCode)) {
return CharacterType.HAN_LETTER;
} else if (isKatakana(charCode)) {
return CharacterType.KATAKANA_LETTER;
} else if (isHiragana(charCode)) {
return CharacterType.HIRAGANA_LETTER;
} else if (isHalfwidthKatakana(charCode)) {
return CharacterType.HALFWIDTH_KATAKANA_LETTER;
}
return CharacterType.ALPHA_LETTER;
}
let NormalizeWithNFKC;
function getNormalizeWithNFKC() {
NormalizeWithNFKC ||= ` ¨ª¯²-µ¸-º¼-¾IJ-ijĿ-ŀʼnſDŽ-njDZ-dzʰ-ʸ˘-˝ˠ-ˤʹͺ;΄-΅·ϐ-ϖϰ-ϲϴ-ϵϹևٵ-ٸक़-य़ড়-ঢ়য়ਲ਼ਸ਼ਖ਼-ਜ਼ਫ਼ଡ଼-ଢ଼ำຳໜ-ໝ༌གྷཌྷདྷབྷཛྷཀྵჼᴬ-ᴮᴰ-ᴺᴼ-ᵍᵏ-ᵪᵸᶛ-ᶿẚ-ẛάέήίόύώΆ᾽-῁ΈΉ῍-῏ΐΊ῝-῟ΰΎ῭-`ΌΏ´-῾ - ‑‗․-… ″-‴‶-‷‼‾⁇-⁉⁗ ⁰-ⁱ⁴-₎ₐ-ₜ₨℀-℃℅-ℇ℉-ℓℕ-№ℙ-ℝ℠-™ℤΩℨK-ℭℯ-ℱℳ-ℹ℻-⅀ⅅ-ⅉ⅐-ⅿ↉∬-∭∯-∰〈-〉①-⓪⨌⩴-⩶⫝̸ⱼ-ⱽⵯ⺟⻳⼀-⿕　〶〸-〺゛-゜ゟヿㄱ-ㆎ㆒-㆟㈀-㈞㈠-㉇㉐-㉾㊀-㏿ꚜ-ꚝꝰꟲ-ꟴꟸ-ꟹꭜ-ꭟꭩ豈-嗀塚晴凞-羽蘒諸逸-都飯-舘並-龎ff-stﬓ-ﬗיִײַ-זּטּ-לּמּנּ-סּףּ-פּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-﷼︐-︙︰-﹄﹇-﹒﹔-﹦﹨-﹫ﹰ-ﹲﹴﹶ-ﻼ！-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ￠-￦`;
return NormalizeWithNFKC;
}
;// ./web/pdf_find_controller.js
const FindState = {
FOUND: 0,
NOT_FOUND: 1,
WRAPPED: 2,
PENDING: 3
};
const FIND_TIMEOUT = 250;
const MATCH_SCROLL_OFFSET_TOP = -50;
const MATCH_SCROLL_OFFSET_LEFT = -400;
const CHARACTERS_TO_NORMALIZE = {
"\u2010": "-",
"\u2018": "'",
"\u2019": "'",
"\u201A": "'",
"\u201B": "'",
"\u201C": '"',
"\u201D": '"',
"\u201E": '"',
"\u201F": '"',
"\u00BC": "1/4",
"\u00BD": "1/2",
"\u00BE": "3/4"
};
const DIACRITICS_EXCEPTION = new Set([0x3099, 0x309a, 0x094d, 0x09cd, 0x0a4d, 0x0acd, 0x0b4d, 0x0bcd, 0x0c4d, 0x0ccd, 0x0d3b, 0x0d3c, 0x0d4d, 0x0dca, 0x0e3a, 0x0eba, 0x0f84, 0x1039, 0x103a, 0x1714, 0x1734, 0x17d2, 0x1a60, 0x1b44, 0x1baa, 0x1bab, 0x1bf2, 0x1bf3, 0x2d7f, 0xa806, 0xa82c, 0xa8c4, 0xa953, 0xa9c0, 0xaaf6, 0xabed, 0x0c56, 0x0f71, 0x0f72, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f80, 0x0f74]);
let DIACRITICS_EXCEPTION_STR;
const DIACRITICS_REG_EXP = /\p{M}+/gu;
const SPECIAL_CHARS_REG_EXP = /([.*+?^${}()|[\]\\])|(\p{P})|(\s+)|(\p{M})|(\p{L})/gu;
const NOT_DIACRITIC_FROM_END_REG_EXP = /([^\p{M}])\p{M}*$/u;
const NOT_DIACRITIC_FROM_START_REG_EXP = /^\p{M}*([^\p{M}])/u;
const SYLLABLES_REG_EXP = /[\uAC00-\uD7AF\uFA6C\uFACF-\uFAD1\uFAD5-\uFAD7]+/g;
const SYLLABLES_LENGTHS = new Map();
const FIRST_CHAR_SYLLABLES_REG_EXP = "[\\u1100-\\u1112\\ud7a4-\\ud7af\\ud84a\\ud84c\\ud850\\ud854\\ud857\\ud85f]";
const NFKC_CHARS_TO_NORMALIZE = new Map();
let noSyllablesRegExp = null;
let withSyllablesRegExp = null;
function normalize(text) {
const syllablePositions = [];
let m;
while ((m = SYLLABLES_REG_EXP.exec(text)) !== null) {
let {
index
} = m;
for (const char of m[0]) {
let len = SYLLABLES_LENGTHS.get(char);
if (!len) {
len = char.normalize("NFD").length;
SYLLABLES_LENGTHS.set(char, len);
}
syllablePositions.push([len, index++]);
}
}
let normalizationRegex;
if (syllablePositions.length === 0 && noSyllablesRegExp) {
normalizationRegex = noSyllablesRegExp;
} else if (syllablePositions.length > 0 && withSyllablesRegExp) {
normalizationRegex = withSyllablesRegExp;
} else {
const replace = Object.keys(CHARACTERS_TO_NORMALIZE).join("");
const toNormalizeWithNFKC = getNormalizeWithNFKC();
const CJK = "(?:\\p{Ideographic}|[\u3040-\u30FF])";
const HKDiacritics = "(?:\u3099|\u309A)";
const CompoundWord = "\\p{Ll}-\\n\\p{Lu}";
const regexp = `([${replace}])|([${toNormalizeWithNFKC}])|(${HKDiacritics}\\n)|(\\p{M}+(?:-\\n)?)|(${CompoundWord})|(\\S-\\n)|(${CJK}\\n)|(\\n)`;
if (syllablePositions.length === 0) {
normalizationRegex = noSyllablesRegExp = new RegExp(regexp + "|(\\u0000)", "gum");
} else {
normalizationRegex = withSyllablesRegExp = new RegExp(regexp + `|(${FIRST_CHAR_SYLLABLES_REG_EXP})`, "gum");
}
}
const rawDiacriticsPositions = [];
while ((m = DIACRITICS_REG_EXP.exec(text)) !== null) {
rawDiacriticsPositions.push([m[0].length, m.index]);
}
let normalized = text.normalize("NFD");
const positions = [0, 0];
let rawDiacriticsIndex = 0;
let syllableIndex = 0;
let shift = 0;
let shiftOrigin = 0;
let eol = 0;
let hasDiacritics = false;
normalized = normalized.replace(normalizationRegex, (match, p1, p2, p3, p4, p5, p6, p7, p8, p9, i) => {
i -= shiftOrigin;
if (p1) {
const replacement = CHARACTERS_TO_NORMALIZE[p1];
const jj = replacement.length;
for (let j = 1; j < jj; j++) {
positions.push(i - shift + j, shift - j);
}
shift -= jj - 1;
return replacement;
}
if (p2) {
let replacement = NFKC_CHARS_TO_NORMALIZE.get(p2);
if (!replacement) {
replacement = p2.normalize("NFKC");
NFKC_CHARS_TO_NORMALIZE.set(p2, replacement);
}
const jj = replacement.length;
for (let j = 1; j < jj; j++) {
positions.push(i - shift + j, shift - j);
}
shift -= jj - 1;
return replacement;
}
if (p3) {
hasDiacritics = true;
if (i + eol === rawDiacriticsPositions[rawDiacriticsIndex]?.[1]) {
++rawDiacriticsIndex;
} else {
positions.push(i - 1 - shift + 1, shift - 1);
shift -= 1;
shiftOrigin += 1;
}
positions.push(i - shift + 1, shift);
shiftOrigin += 1;
eol += 1;
return p3.charAt(0);
}
if (p4) {
const hasTrailingDashEOL = p4.endsWith("\n");
const len = hasTrailingDashEOL ? p4.length - 2 : p4.length;
hasDiacritics = true;
let jj = len;
if (i + eol === rawDiacriticsPositions[rawDiacriticsIndex]?.[1]) {
jj -= rawDiacriticsPositions[rawDiacriticsIndex][0];
++rawDiacriticsIndex;
}
for (let j = 1; j <= jj; j++) {
positions.push(i - 1 - shift + j, shift - j);
}
shift -= jj;
shiftOrigin += jj;
if (hasTrailingDashEOL) {
i += len - 1;
positions.push(i - shift + 1, 1 + shift);
shift += 1;
shiftOrigin += 1;
eol += 1;
return p4.slice(0, len);
}
return p4;
}
if (p5) {
shiftOrigin += 1;
eol += 1;
return p5.replace("\n", "");
}
if (p6) {
const len = p6.length - 2;
positions.push(i - shift + len, 1 + shift);
shift += 1;
shiftOrigin += 1;
eol += 1;
return p6.slice(0, -2);
}
if (p7) {
const len = p7.length - 1;
positions.push(i - shift + len, shift);
shiftOrigin += 1;
eol += 1;
return p7.slice(0, -1);
}
if (p8) {
positions.push(i - shift + 1, shift - 1);
shift -= 1;
shiftOrigin += 1;
eol += 1;
return " ";
}
if (i + eol === syllablePositions[syllableIndex]?.[1]) {
const newCharLen = syllablePositions[syllableIndex][0] - 1;
++syllableIndex;
for (let j = 1; j <= newCharLen; j++) {
positions.push(i - (shift - j), shift - j);
}
shift -= newCharLen;
shiftOrigin += newCharLen;
}
return p9;
});
positions.push(normalized.length, shift);
const starts = new Uint32Array(positions.length >> 1);
const shifts = new Int32Array(positions.length >> 1);
for (let i = 0, ii = positions.length; i < ii; i += 2) {
starts[i >> 1] = positions[i];
shifts[i >> 1] = positions[i + 1];
}
return [normalized, [starts, shifts], hasDiacritics];
}
function getOriginalIndex(diffs, pos, len) {
if (!diffs) {
return [pos, len];
}
const [starts, shifts] = diffs;
const start = pos;
const end = pos + len - 1;
let i = binarySearchFirstItem(starts, x => x >= start);
if (starts[i] > start) {
--i;
}
let j = binarySearchFirstItem(starts, x => x >= end, i);
if (starts[j] > end) {
--j;
}
const oldStart = start + shifts[i];
const oldEnd = end + shifts[j];
const oldLen = oldEnd + 1 - oldStart;
return [oldStart, oldLen];
}
class PDFFindController {
#state = null;
#updateMatchesCountOnProgress = true;
#visitedPagesCount = 0;
constructor({
linkService,
eventBus,
updateMatchesCountOnProgress = true
}) {
this._linkService = linkService;
this._eventBus = eventBus;
this.#updateMatchesCountOnProgress = updateMatchesCountOnProgress;
this.onIsPageVisible = null;
this.#reset();
eventBus._on("find", this.#onFind.bind(this));
eventBus._on("findbarclose", this.#onFindBarClose.bind(this));
}
get highlightMatches() {
return this._highlightMatches;
}
get pageMatches() {
return this._pageMatches;
}
get pageMatchesLength() {
return this._pageMatchesLength;
}
get selected() {
return this._selected;
}
get state() {
return this.#state;
}
setDocument(pdfDocument) {
if (this._pdfDocument) {
this.#reset();
}
if (!pdfDocument) {
return;
}
this._pdfDocument = pdfDocument;
this._firstPageCapability.resolve();
}
#onFind(state) {
if (!state) {
return;
}
const pdfDocument = this._pdfDocument;
const {
type
} = state;
if (this.#state === null || this.#shouldDirtyMatch(state)) {
this._dirtyMatch = true;
}
this.#state = state;
if (type !== "highlightallchange") {
this.#updateUIState(FindState.PENDING);
}
this._firstPageCapability.promise.then(() => {
if (!this._pdfDocument || pdfDocument && this._pdfDocument !== pdfDocument) {
return;
}
this.#extractText();
const findbarClosed = !this._highlightMatches;
const pendingTimeout = !!this._findTimeout;
if (this._findTimeout) {
clearTimeout(this._findTimeout);
this._findTimeout = null;
}
if (!type) {
this._findTimeout = setTimeout(() => {
this.#nextMatch();
this._findTimeout = null;
}, FIND_TIMEOUT);
} else if (this._dirtyMatch) {
this.#nextMatch();
} else if (type === "again") {
this.#nextMatch();
if (findbarClosed && this.#state.highlightAll) {
this.#updateAllPages();
}
} else if (type === "highlightallchange") {
if (pendingTimeout) {
this.#nextMatch();
} else {
this._highlightMatches = true;
}
this.#updateAllPages();
} else {
this.#nextMatch();
}
});
}
scrollMatchIntoView({
element = null,
selectedLeft = 0,
pageIndex = -1,
matchIndex = -1
}) {
if (!this._scrollMatches || !element) {
return;
} else if (matchIndex === -1 || matchIndex !== this._selected.matchIdx) {
return;
} else if (pageIndex === -1 || pageIndex !== this._selected.pageIdx) {
return;
}
this._scrollMatches = false;
const spot = {
top: MATCH_SCROLL_OFFSET_TOP,
left: selectedLeft + MATCH_SCROLL_OFFSET_LEFT
};
scrollIntoView(element, spot, true);
}
#reset() {
this._highlightMatches = false;
this._scrollMatches = false;
this._pdfDocument = null;
this._pageMatches = [];
this._pageMatchesLength = [];
this.#visitedPagesCount = 0;
this.#state = null;
this._selected = {
pageIdx: -1,
matchIdx: -1
};
this._offset = {
pageIdx: null,
matchIdx: null,
wrapped: false
};
this._extractTextPromises = [];
this._pageContents = [];
this._pageDiffs = [];
this._hasDiacritics = [];
this._matchesCountTotal = 0;
this._pagesToSearch = null;
this._pendingFindMatches = new Set();
this._resumePageIdx = null;
this._dirtyMatch = false;
clearTimeout(this._findTimeout);
this._findTimeout = null;
this._firstPageCapability = Promise.withResolvers();
}
get #query() {
const {
query
} = this.#state;
if (typeof query === "string") {
if (query !== this._rawQuery) {
this._rawQuery = query;
[this._normalizedQuery] = normalize(query);
}
return this._normalizedQuery;
}
return (query || []).filter(q => !!q).map(q => normalize(q)[0]);
}
#shouldDirtyMatch(state) {
const newQuery = state.query,
prevQuery = this.#state.query;
const newType = typeof newQuery,
prevType = typeof prevQuery;
if (newType !== prevType) {
return true;
}
if (newType === "string") {
if (newQuery !== prevQuery) {
return true;
}
} else if (JSON.stringify(newQuery) !== JSON.stringify(prevQuery)) {
return true;
}
switch (state.type) {
case "again":
const pageNumber = this._selected.pageIdx + 1;
const linkService = this._linkService;
return pageNumber >= 1 && pageNumber <= linkService.pagesCount && pageNumber !== linkService.page && !(this.onIsPageVisible?.(pageNumber) ?? true);
case "highlightallchange":
return false;
}
return true;
}
#isEntireWord(content, startIdx, length) {
let match = content.slice(0, startIdx).match(NOT_DIACRITIC_FROM_END_REG_EXP);
if (match) {
const first = content.charCodeAt(startIdx);
const limit = match[1].charCodeAt(0);
if (getCharacterType(first) === getCharacterType(limit)) {
return false;
}
}
match = content.slice(startIdx + length).match(NOT_DIACRITIC_FROM_START_REG_EXP);
if (match) {
const last = content.charCodeAt(startIdx + length - 1);
const limit = match[1].charCodeAt(0);
if (getCharacterType(last) === getCharacterType(limit)) {
return false;
}
}
return true;
}
#convertToRegExpString(query, hasDiacritics) {
const {
matchDiacritics
} = this.#state;
let isUnicode = false;
query = query.replaceAll(SPECIAL_CHARS_REG_EXP, (match, p1, p2, p3, p4, p5) => {
if (p1) {
return `[ ]*\\${p1}[ ]*`;
}
if (p2) {
return `[ ]*${p2}[ ]*`;
}
if (p3) {
return "[ ]+";
}
if (matchDiacritics) {
return p4 || p5;
}
if (p4) {
return DIACRITICS_EXCEPTION.has(p4.charCodeAt(0)) ? p4 : "";
}
if (hasDiacritics) {
isUnicode = true;
return `${p5}\\p{M}*`;
}
return p5;
});
const trailingSpaces = "[ ]*";
if (query.endsWith(trailingSpaces)) {
query = query.slice(0, query.length - trailingSpaces.length);
}
if (matchDiacritics) {
if (hasDiacritics) {
DIACRITICS_EXCEPTION_STR ||= String.fromCharCode(...DIACRITICS_EXCEPTION);
isUnicode = true;
query = `${query}(?=[${DIACRITICS_EXCEPTION_STR}]|[^\\p{M}]|$)`;
}
}
return [isUnicode, query];
}
#calculateMatch(pageIndex) {
const query = this.#query;
if (query.length === 0) {
return;
}
const pageContent = this._pageContents[pageIndex];
const matcherResult = this.match(query, pageContent, pageIndex);
const matches = this._pageMatches[pageIndex] = [];
const matchesLength = this._pageMatchesLength[pageIndex] = [];
const diffs = this._pageDiffs[pageIndex];
matcherResult?.forEach(({
index,
length
}) => {
const [matchPos, matchLen] = getOriginalIndex(diffs, index, length);
if (matchLen) {
matches.push(matchPos);
matchesLength.push(matchLen);
}
});
if (this.#state.highlightAll) {
this.#updatePage(pageIndex);
}
if (this._resumePageIdx === pageIndex) {
this._resumePageIdx = null;
this.#nextPageMatch();
}
const pageMatchesCount = matches.length;
this._matchesCountTotal += pageMatchesCount;
if (this.#updateMatchesCountOnProgress) {
if (pageMatchesCount > 0) {
this.#updateUIResultsCount();
}
} else if (++this.#visitedPagesCount === this._linkService.pagesCount) {
this.#updateUIResultsCount();
}
}
match(query, pageContent, pageIndex) {
const hasDiacritics = this._hasDiacritics[pageIndex];
let isUnicode = false;
if (typeof query === "string") {
[isUnicode, query] = this.#convertToRegExpString(query, hasDiacritics);
} else {
query = query.sort().reverse().map(q => {
const [isUnicodePart, queryPart] = this.#convertToRegExpString(q, hasDiacritics);
isUnicode ||= isUnicodePart;
return `(${queryPart})`;
}).join("|");
}
if (!query) {
return undefined;
}
const {
caseSensitive,
entireWord
} = this.#state;
const flags = `g${isUnicode ? "u" : ""}${caseSensitive ? "" : "i"}`;
query = new RegExp(query, flags);
const matches = [];
let match;
while ((match = query.exec(pageContent)) !== null) {
if (entireWord && !this.#isEntireWord(pageContent, match.index, match[0].length)) {
continue;
}
matches.push({
index: match.index,
length: match[0].length
});
}
return matches;
}
#extractText() {
if (this._extractTextPromises.length > 0) {
return;
}
let deferred = Promise.resolve();
const textOptions = {
disableNormalization: true
};
for (let i = 0, ii = this._linkService.pagesCount; i < ii; i++) {
const {
promise,
resolve
} = Promise.withResolvers();
this._extractTextPromises[i] = promise;
deferred = deferred.then(() => {
return this._pdfDocument.getPage(i + 1).then(pdfPage => pdfPage.getTextContent(textOptions)).then(textContent => {
const strBuf = [];
for (const textItem of textContent.items) {
strBuf.push(textItem.str);
if (textItem.hasEOL) {
strBuf.push("\n");
}
}
[this._pageContents[i], this._pageDiffs[i], this._hasDiacritics[i]] = normalize(strBuf.join(""));
resolve();
}, reason => {
console.error(`Unable to get text content for page ${i + 1}`, reason);
this._pageContents[i] = "";
this._pageDiffs[i] = null;
this._hasDiacritics[i] = false;
resolve();
});
});
}
}
#updatePage(index) {
if (this._scrollMatches && this._selected.pageIdx === index) {
this._linkService.page = index + 1;
}
this._eventBus.dispatch("updatetextlayermatches", {
source: this,
pageIndex: index
});
}
#updateAllPages() {
this._eventBus.dispatch("updatetextlayermatches", {
source: this,
pageIndex: -1
});
}
#nextMatch() {
const previous = this.#state.findPrevious;
const currentPageIndex = this._linkService.page - 1;
const numPages = this._linkService.pagesCount;
this._highlightMatches = true;
if (this._dirtyMatch) {
this._dirtyMatch = false;
this._selected.pageIdx = this._selected.matchIdx = -1;
this._offset.pageIdx = currentPageIndex;
this._offset.matchIdx = null;
this._offset.wrapped = false;
this._resumePageIdx = null;
this._pageMatches.length = 0;
this._pageMatchesLength.length = 0;
this.#visitedPagesCount = 0;
this._matchesCountTotal = 0;
this.#updateAllPages();
for (let i = 0; i < numPages; i++) {
if (this._pendingFindMatches.has(i)) {
continue;
}
this._pendingFindMatches.add(i);
this._extractTextPromises[i].then(() => {
this._pendingFindMatches.delete(i);
this.#calculateMatch(i);
});
}
}
const query = this.#query;
if (query.length === 0) {
this.#updateUIState(FindState.FOUND);
return;
}
if (this._resumePageIdx) {
return;
}
const offset = this._offset;
this._pagesToSearch = numPages;
if (offset.matchIdx !== null) {
const numPageMatches = this._pageMatches[offset.pageIdx].length;
if (!previous && offset.matchIdx + 1 < numPageMatches || previous && offset.matchIdx > 0) {
offset.matchIdx = previous ? offset.matchIdx - 1 : offset.matchIdx + 1;
this.#updateMatch(true);
return;
}
this.#advanceOffsetPage(previous);
}
this.#nextPageMatch();
}
#matchesReady(matches) {
const offset = this._offset;
const numMatches = matches.length;
const previous = this.#state.findPrevious;
if (numMatches) {
offset.matchIdx = previous ? numMatches - 1 : 0;
this.#updateMatch(true);
return true;
}
this.#advanceOffsetPage(previous);
if (offset.wrapped) {
offset.matchIdx = null;
if (this._pagesToSearch < 0) {
this.#updateMatch(false);
return true;
}
}
return false;
}
#nextPageMatch() {
if (this._resumePageIdx !== null) {
console.error("There can only be one pending page.");
}
let matches = null;
do {
const pageIdx = this._offset.pageIdx;
matches = this._pageMatches[pageIdx];
if (!matches) {
this._resumePageIdx = pageIdx;
break;
}
} while (!this.#matchesReady(matches));
}
#advanceOffsetPage(previous) {
const offset = this._offset;
const numPages = this._linkService.pagesCount;
offset.pageIdx = previous ? offset.pageIdx - 1 : offset.pageIdx + 1;
offset.matchIdx = null;
this._pagesToSearch--;
if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
offset.pageIdx = previous ? numPages - 1 : 0;
offset.wrapped = true;
}
}
#updateMatch(found = false) {
let state = FindState.NOT_FOUND;
const wrapped = this._offset.wrapped;
this._offset.wrapped = false;
if (found) {
const previousPage = this._selected.pageIdx;
this._selected.pageIdx = this._offset.pageIdx;
this._selected.matchIdx = this._offset.matchIdx;
state = wrapped ? FindState.WRAPPED : FindState.FOUND;
if (previousPage !== -1 && previousPage !== this._selected.pageIdx) {
this.#updatePage(previousPage);
}
}
this.#updateUIState(state, this.#state.findPrevious);
if (this._selected.pageIdx !== -1) {
this._scrollMatches = true;
this.#updatePage(this._selected.pageIdx);
}
}
#onFindBarClose(evt) {
const pdfDocument = this._pdfDocument;
this._firstPageCapability.promise.then(() => {
if (!this._pdfDocument || pdfDocument && this._pdfDocument !== pdfDocument) {
return;
}
if (this._findTimeout) {
clearTimeout(this._findTimeout);
this._findTimeout = null;
}
if (this._resumePageIdx) {
this._resumePageIdx = null;
this._dirtyMatch = true;
}
this.#updateUIState(FindState.FOUND);
this._highlightMatches = false;
this.#updateAllPages();
});
}
#requestMatchesCount() {
const {
pageIdx,
matchIdx
} = this._selected;
let current = 0,
total = this._matchesCountTotal;
if (matchIdx !== -1) {
for (let i = 0; i < pageIdx; i++) {
current += this._pageMatches[i]?.length || 0;
}
current += matchIdx + 1;
}
if (current < 1 || current > total) {
current = total = 0;
}
return {
current,
total
};
}
#updateUIResultsCount() {
this._eventBus.dispatch("updatefindmatchescount", {
source: this,
matchesCount: this.#requestMatchesCount()
});
}
#updateUIState(state, previous = false) {
if (!this.#updateMatchesCountOnProgress && (this.#visitedPagesCount !== this._linkService.pagesCount || state === FindState.PENDING)) {
return;
}
this._eventBus.dispatch("updatefindcontrolstate", {
source: this,
state,
previous,
entireWord: this.#state?.entireWord ?? null,
matchesCount: this.#requestMatchesCount(),
rawQuery: this.#state?.query ?? null
});
}
}
;// ./web/pdf_find_bar.js
const MATCHES_COUNT_LIMIT = 1000;
class PDFFindBar {
#mainContainer;
#resizeObserver = new ResizeObserver(this.#resizeObserverCallback.bind(this));
constructor(options, mainContainer, eventBus) {
this.opened = false;
this.bar = options.bar;
this.toggleButton = options.toggleButton;
this.findField = options.findField;
this.highlightAll = options.highlightAllCheckbox;
this.caseSensitive = options.caseSensitiveCheckbox;
this.matchDiacritics = options.matchDiacriticsCheckbox;
this.entireWord = options.entireWordCheckbox;
this.findMsg = options.findMsg;
this.findResultsCount = options.findResultsCount;
this.findPreviousButton = options.findPreviousButton;
this.findNextButton = options.findNextButton;
this.eventBus = eventBus;
this.#mainContainer = mainContainer;
this.toggleButton.addEventListener("click", () => {
this.toggle();
});
this.findField.addEventListener("input", () => {
this.dispatchEvent("");
});
this.bar.addEventListener("keydown", e => {
switch (e.keyCode) {
case 13:
if (e.target === this.findField) {
this.dispatchEvent("again", e.shiftKey);
}
break;
case 27:
this.close();
break;
}
});
this.findPreviousButton.addEventListener("click", () => {
this.dispatchEvent("again", true);
});
this.findNextButton.addEventListener("click", () => {
this.dispatchEvent("again", false);
});
this.highlightAll.addEventListener("click", () => {
this.dispatchEvent("highlightallchange");
});
this.caseSensitive.addEventListener("click", () => {
this.dispatchEvent("casesensitivitychange");
});
this.entireWord.addEventListener("click", () => {
this.dispatchEvent("entirewordchange");
});
this.matchDiacritics.addEventListener("click", () => {
this.dispatchEvent("diacriticmatchingchange");
});
}
reset() {
this.updateUIState();
}
dispatchEvent(type, findPrev = false) {
this.eventBus.dispatch("find", {
source: this,
type,
query: this.findField.value,
caseSensitive: this.caseSensitive.checked,
entireWord: this.entireWord.checked,
highlightAll: this.highlightAll.checked,
findPrevious: findPrev,
matchDiacritics: this.matchDiacritics.checked
});
}
updateUIState(state, previous, matchesCount) {
const {
findField,
findMsg
} = this;
let findMsgId = "",
status = "";
switch (state) {
case FindState.FOUND:
break;
case FindState.PENDING:
status = "pending";
break;
case FindState.NOT_FOUND:
findMsgId = "pdfjs-find-not-found";
status = "notFound";
break;
case FindState.WRAPPED:
findMsgId = previous ? "pdfjs-find-reached-top" : "pdfjs-find-reached-bottom";
break;
}
findField.setAttribute("data-status", status);
findField.setAttribute("aria-invalid", state === FindState.NOT_FOUND);
findMsg.setAttribute("data-status", status);
if (findMsgId) {
findMsg.setAttribute("data-l10n-id", findMsgId);
} else {
findMsg.removeAttribute("data-l10n-id");
findMsg.textContent = "";
}
this.updateResultsCount(matchesCount);
}
updateResultsCount({
current = 0,
total = 0
} = {}) {
const {
findResultsCount
} = this;
if (total > 0) {
const limit = MATCHES_COUNT_LIMIT;
findResultsCount.setAttribute("data-l10n-id", total > limit ? "pdfjs-find-match-count-limit" : "pdfjs-find-match-count");
findResultsCount.setAttribute("data-l10n-args", JSON.stringify({
limit,
current,
total
}));
} else {
findResultsCount.removeAttribute("data-l10n-id");
findResultsCount.textContent = "";
}
}
open() {
if (!this.opened) {
this.#resizeObserver.observe(this.#mainContainer);
this.#resizeObserver.observe(this.bar);
this.opened = true;
toggleExpandedBtn(this.toggleButton, true, this.bar);
}
this.findField.select();
this.findField.focus();
}
close() {
if (!this.opened) {
return;
}
this.#resizeObserver.disconnect();
this.opened = false;
toggleExpandedBtn(this.toggleButton, false, this.bar);
this.eventBus.dispatch("findbarclose", {
source: this
});
}
toggle() {
if (this.opened) {
this.close();
} else {
this.open();
}
}
#resizeObserverCallback() {
const {
bar
} = this;
bar.classList.remove("wrapContainers");
const findbarHeight = bar.clientHeight;
const inputContainerHeight = bar.firstElementChild.clientHeight;
if (findbarHeight > inputContainerHeight) {
bar.classList.add("wrapContainers");
}
}
}
;// ./web/pdf_history.js
const HASH_CHANGE_TIMEOUT = 1000;
const POSITION_UPDATED_THRESHOLD = 50;
const UPDATE_VIEWAREA_TIMEOUT = 1000;
function getCurrentHash() {
return document.location.hash;
}
class PDFHistory {
#eventAbortController = null;
constructor({
linkService,
eventBus
}) {
this.linkService = linkService;
this.eventBus = eventBus;
this._initialized = false;
this._fingerprint = "";
this.reset();
this.eventBus._on("pagesinit", () => {
this._isPagesLoaded = false;
this.eventBus._on("pagesloaded", evt => {
this._isPagesLoaded = !!evt.pagesCount;
}, {
once: true
});
});
}
initialize({
fingerprint,
resetHistory = false,
updateUrl = false
}) {
if (!fingerprint || typeof fingerprint !== "string") {
console.error('PDFHistory.initialize: The "fingerprint" must be a non-empty string.');
return;
}
if (this._initialized) {
this.reset();
}
const reInitialized = this._fingerprint !== "" && this._fingerprint !== fingerprint;
this._fingerprint = fingerprint;
this._updateUrl = updateUrl === true;
this._initialized = true;
this.#bindEvents();
const state = window.history.state;
this._popStateInProgress = false;
this._blockHashChange = 0;
this._currentHash = getCurrentHash();
this._numPositionUpdates = 0;
this._uid = this._maxUid = 0;
this._destination = null;
this._position = null;
if (!this.#isValidState(state, true) || resetHistory) {
const {
hash,
page,
rotation
} = this.#parseCurrentHash(true);
if (!hash || reInitialized || resetHistory) {
this.#pushOrReplaceState(null, true);
return;
}
this.#pushOrReplaceState({
hash,
page,
rotation
}, true);
return;
}
const destination = state.destination;
this.#updateInternalState(destination, state.uid, true);
if (destination.rotation !== undefined) {
this._initialRotation = destination.rotation;
}
if (destination.dest) {
this._initialBookmark = JSON.stringify(destination.dest);
this._destination.page = null;
} else if (destination.hash) {
this._initialBookmark = destination.hash;
} else if (destination.page) {
this._initialBookmark = `page=${destination.page}`;
}
}
reset() {
if (this._initialized) {
this.#pageHide();
this._initialized = false;
this.#unbindEvents();
}
if (this._updateViewareaTimeout) {
clearTimeout(this._updateViewareaTimeout);
this._updateViewareaTimeout = null;
}
this._initialBookmark = null;
this._initialRotation = null;
}
push({
namedDest = null,
explicitDest,
pageNumber
}) {
if (!this._initialized) {
return;
}
if (namedDest && typeof namedDest !== "string") {
console.error("PDFHistory.push: " + `"${namedDest}" is not a valid namedDest parameter.`);
return;
} else if (!Array.isArray(explicitDest)) {
console.error("PDFHistory.push: " + `"${explicitDest}" is not a valid explicitDest parameter.`);
return;
} else if (!this.#isValidPage(pageNumber)) {
if (pageNumber !== null || this._destination) {
console.error("PDFHistory.push: " + `"${pageNumber}" is not a valid pageNumber parameter.`);
return;
}
}
const hash = namedDest || JSON.stringify(explicitDest);
if (!hash) {
return;
}
let forceReplace = false;
if (this._destination && (isDestHashesEqual(this._destination.hash, hash) || isDestArraysEqual(this._destination.dest, explicitDest))) {
if (this._destination.page) {
return;
}
forceReplace = true;
}
if (this._popStateInProgress && !forceReplace) {
return;
}
this.#pushOrReplaceState({
dest: explicitDest,
hash,
page: pageNumber,
rotation: this.linkService.rotation
}, forceReplace);
if (!this._popStateInProgress) {
this._popStateInProgress = true;
Promise.resolve().then(() => {
this._popStateInProgress = false;
});
}
}
pushPage(pageNumber) {
if (!this._initialized) {
return;
}
if (!this.#isValidPage(pageNumber)) {
console.error(`PDFHistory.pushPage: "${pageNumber}" is not a valid page number.`);
return;
}
if (this._destination?.page === pageNumber) {
return;
}
if (this._popStateInProgress) {
return;
}
this.#pushOrReplaceState({
dest: null,
hash: `page=${pageNumber}`,
page: pageNumber,
rotation: this.linkService.rotation
});
if (!this._popStateInProgress) {
this._popStateInProgress = true;
Promise.resolve().then(() => {
this._popStateInProgress = false;
});
}
}
pushCurrentPosition() {
if (!this._initialized || this._popStateInProgress) {
return;
}
this.#tryPushCurrentPosition();
}
back() {
if (!this._initialized || this._popStateInProgress) {
return;
}
const state = window.history.state;
if (this.#isValidState(state) && state.uid > 0) {
window.history.back();
}
}
forward() {
if (!this._initialized || this._popStateInProgress) {
return;
}
const state = window.history.state;
if (this.#isValidState(state) && state.uid < this._maxUid) {
window.history.forward();
}
}
get popStateInProgress() {
return this._initialized && (this._popStateInProgress || this._blockHashChange > 0);
}
get initialBookmark() {
return this._initialized ? this._initialBookmark : null;
}
get initialRotation() {
return this._initialized ? this._initialRotation : null;
}
#pushOrReplaceState(destination, forceReplace = false) {
const shouldReplace = forceReplace || !this._destination;
const newState = {
fingerprint: this._fingerprint,
uid: shouldReplace ? this._uid : this._uid + 1,
destination
};
this.#updateInternalState(destination, newState.uid);
let newUrl;
if (this._updateUrl && destination?.hash) {
const baseUrl = document.location.href.split("#", 1)[0];
if (!baseUrl.startsWith("file://")) {
newUrl = `${baseUrl}#${destination.hash}`;
}
}
if (shouldReplace) {
window.history.replaceState(newState, "", newUrl);
} else {
window.history.pushState(newState, "", newUrl);
}
}
#tryPushCurrentPosition(temporary = false) {
if (!this._position) {
return;
}
let position = this._position;
if (temporary) {
position = Object.assign(Object.create(null), this._position);
position.temporary = true;
}
if (!this._destination) {
this.#pushOrReplaceState(position);
return;
}
if (this._destination.temporary) {
this.#pushOrReplaceState(position, true);
return;
}
if (this._destination.hash === position.hash) {
return;
}
if (!this._destination.page && (POSITION_UPDATED_THRESHOLD <= 0 || this._numPositionUpdates <= POSITION_UPDATED_THRESHOLD)) {
return;
}
let forceReplace = false;
if (this._destination.page >= position.first && this._destination.page <= position.page) {
if (this._destination.dest !== undefined || !this._destination.first) {
return;
}
forceReplace = true;
}
this.#pushOrReplaceState(position, forceReplace);
}
#isValidPage(val) {
return Number.isInteger(val) && val > 0 && val <= this.linkService.pagesCount;
}
#isValidState(state, checkReload = false) {
if (!state) {
return false;
}
if (state.fingerprint !== this._fingerprint) {
if (checkReload) {
if (typeof state.fingerprint !== "string" || state.fingerprint.length !== this._fingerprint.length) {
return false;
}
const [perfEntry] = performance.getEntriesByType("navigation");
if (perfEntry?.type !== "reload") {
return false;
}
} else {
return false;
}
}
if (!Number.isInteger(state.uid) || state.uid < 0) {
return false;
}
if (state.destination === null || typeof state.destination !== "object") {
return false;
}
return true;
}
#updateInternalState(destination, uid, removeTemporary = false) {
if (this._updateViewareaTimeout) {
clearTimeout(this._updateViewareaTimeout);
this._updateViewareaTimeout = null;
}
if (removeTemporary && destination?.temporary) {
delete destination.temporary;
}
this._destination = destination;
this._uid = uid;
this._maxUid = Math.max(this._maxUid, uid);
this._numPositionUpdates = 0;
}
#parseCurrentHash(checkNameddest = false) {
const hash = unescape(getCurrentHash()).substring(1);
const params = parseQueryString(hash);
const nameddest = params.get("nameddest") || "";
let page = params.get("page") | 0;
if (!this.#isValidPage(page) || checkNameddest && nameddest.length > 0) {
page = null;
}
return {
hash,
page,
rotation: this.linkService.rotation
};
}
#updateViewarea({
location
}) {
if (this._updateViewareaTimeout) {
clearTimeout(this._updateViewareaTimeout);
this._updateViewareaTimeout = null;
}
this._position = {
hash: location.pdfOpenParams.substring(1),
page: this.linkService.page,
first: location.pageNumber,
rotation: location.rotation
};
if (this._popStateInProgress) {
return;
}
if (POSITION_UPDATED_THRESHOLD > 0 && this._isPagesLoaded && this._destination && !this._destination.page) {
this._numPositionUpdates++;
}
if (UPDATE_VIEWAREA_TIMEOUT > 0) {
this._updateViewareaTimeout = setTimeout(() => {
if (!this._popStateInProgress) {
this.#tryPushCurrentPosition(true);
}
this._updateViewareaTimeout = null;
}, UPDATE_VIEWAREA_TIMEOUT);
}
}
#popState({
state
}) {
const newHash = getCurrentHash(),
hashChanged = this._currentHash !== newHash;
this._currentHash = newHash;
if (!state) {
this._uid++;
const {
hash,
page,
rotation
} = this.#parseCurrentHash();
this.#pushOrReplaceState({
hash,
page,
rotation
}, true);
return;
}
if (!this.#isValidState(state)) {
return;
}
this._popStateInProgress = true;
if (hashChanged) {
this._blockHashChange++;
waitOnEventOrTimeout({
target: window,
name: "hashchange",
delay: HASH_CHANGE_TIMEOUT
}).then(() => {
this._blockHashChange--;
});
}
const destination = state.destination;
this.#updateInternalState(destination, state.uid, true);
if (isValidRotation(destination.rotation)) {
this.linkService.rotation = destination.rotation;
}
if (destination.dest) {
this.linkService.goToDestination(destination.dest);
} else if (destination.hash) {
this.linkService.setHash(destination.hash);
} else if (destination.page) {
this.linkService.page = destination.page;
}
Promise.resolve().then(() => {
this._popStateInProgress = false;
});
}
#pageHide() {
if (!this._destination || this._destination.temporary) {
this.#tryPushCurrentPosition();
}
}
#bindEvents() {
if (this.#eventAbortController) {
return;
}
this.#eventAbortController = new AbortController();
const {
signal
} = this.#eventAbortController;
this.eventBus._on("updateviewarea", this.#updateViewarea.bind(this), {
signal
});
window.addEventListener("popstate", this.#popState.bind(this), {
signal
});
window.addEventListener("pagehide", this.#pageHide.bind(this), {
signal
});
}
#unbindEvents() {
this.#eventAbortController?.abort();
this.#eventAbortController = null;
}
}
function isDestHashesEqual(destHash, pushHash) {
if (typeof destHash !== "string" || typeof pushHash !== "string") {
return false;
}
if (destHash === pushHash) {
return true;
}
const nameddest = parseQueryString(destHash).get("nameddest");
if (nameddest === pushHash) {
return true;
}
return false;
}
function isDestArraysEqual(firstDest, secondDest) {
function isEntryEqual(first, second) {
if (typeof first !== typeof second) {
return false;
}
if (Array.isArray(first) || Array.isArray(second)) {
return false;
}
if (first !== null && typeof first === "object" && second !== null) {
if (Object.keys(first).length !== Object.keys(second).length) {
return false;
}
for (const key in first) {
if (!isEntryEqual(first[key], second[key])) {
return false;
}
}
return true;
}
return first === second || Number.isNaN(first) && Number.isNaN(second);
}
if (!(Array.isArray(firstDest) && Array.isArray(secondDest))) {
return false;
}
if (firstDest.length !== secondDest.length) {
return false;
}
for (let i = 0, ii = firstDest.length; i < ii; i++) {
if (!isEntryEqual(firstDest[i], secondDest[i])) {
return false;
}
}
return true;
}
;// ./web/pdf_layer_viewer.js
class PDFLayerViewer extends BaseTreeViewer {
constructor(options) {
super(options);
this.eventBus._on("optionalcontentconfigchanged", evt => {
this.#updateLayers(evt.promise);
});
this.eventBus._on("resetlayers", () => {
this.#updateLayers();
});
this.eventBus._on("togglelayerstree", this._toggleAllTreeItems.bind(this));
}
reset() {
super.reset();
this._optionalContentConfig = null;
this._optionalContentVisibility?.clear();
this._optionalContentVisibility = null;
}
_dispatchEvent(layersCount) {
this.eventBus.dispatch("layersloaded", {
source: this,
layersCount
});
}
_bindLink(element, {
groupId,
input
}) {
const setVisibility = () => {
const visible = input.checked;
this._optionalContentConfig.setVisibility(groupId, visible);
const cached = this._optionalContentVisibility.get(groupId);
if (cached) {
cached.visible = visible;
}
this.eventBus.dispatch("optionalcontentconfig", {
source: this,
promise: Promise.resolve(this._optionalContentConfig)
});
};
element.onclick = evt => {
if (evt.target === input) {
setVisibility();
return true;
} else if (evt.target !== element) {
return true;
}
input.checked = !input.checked;
setVisibility();
return false;
};
}
_setNestedName(element, {
name = null
}) {
if (typeof name === "string") {
element.textContent = this._normalizeTextContent(name);
return;
}
element.setAttribute("data-l10n-id", "pdfjs-additional-layers");
element.style.fontStyle = "italic";
this._l10n.translateOnce(element);
}
_addToggleButton(div, {
name = null
}) {
super._addToggleButton(div, name === null);
}
_toggleAllTreeItems() {
if (!this._optionalContentConfig) {
return;
}
super._toggleAllTreeItems();
}
render({
optionalContentConfig,
pdfDocument
}) {
if (this._optionalContentConfig) {
this.reset();
}
this._optionalContentConfig = optionalContentConfig || null;
this._pdfDocument = pdfDocument || null;
const groups = optionalContentConfig?.getOrder();
if (!groups) {
this._dispatchEvent(0);
return;
}
this._optionalContentVisibility = new Map();
const fragment = document.createDocumentFragment(),
queue = [{
parent: fragment,
groups
}];
let layersCount = 0,
hasAnyNesting = false;
while (queue.length > 0) {
const levelData = queue.shift();
for (const groupId of levelData.groups) {
const div = document.createElement("div");
div.className = "treeItem";
const element = document.createElement("a");
div.append(element);
if (typeof groupId === "object") {
hasAnyNesting = true;
this._addToggleButton(div, groupId);
this._setNestedName(element, groupId);
const itemsDiv = document.createElement("div");
itemsDiv.className = "treeItems";
div.append(itemsDiv);
queue.push({
parent: itemsDiv,
groups: groupId.order
});
} else {
const group = optionalContentConfig.getGroup(groupId);
const input = document.createElement("input");
this._bindLink(element, {
groupId,
input
});
input.type = "checkbox";
input.checked = group.visible;
this._optionalContentVisibility.set(groupId, {
input,
visible: input.checked
});
const label = document.createElement("label");
label.textContent = this._normalizeTextContent(group.name);
label.append(input);
element.append(label);
layersCount++;
}
levelData.parent.append(div);
}
}
this._finishRendering(fragment, layersCount, hasAnyNesting);
}
async #updateLayers(promise = null) {
if (!this._optionalContentConfig) {
return;
}
const pdfDocument = this._pdfDocument;
const optionalContentConfig = await (promise || pdfDocument.getOptionalContentConfig({
intent: "display"
}));
if (pdfDocument !== this._pdfDocument) {
return;
}
if (promise) {
for (const [groupId, cached] of this._optionalContentVisibility) {
const group = optionalContentConfig.getGroup(groupId);
if (group && cached.visible !== group.visible) {
cached.input.checked = cached.visible = !cached.visible;
}
}
return;
}
this.eventBus.dispatch("optionalcontentconfig", {
source: this,
promise: Promise.resolve(optionalContentConfig)
});
this.render({
optionalContentConfig,
pdfDocument: this._pdfDocument
});
}
}
;// ./web/pdf_outline_viewer.js
class PDFOutlineViewer extends BaseTreeViewer {
constructor(options) {
super(options);
this.linkService = options.linkService;
this.downloadManager = options.downloadManager;
this.eventBus._on("toggleoutlinetree", this._toggleAllTreeItems.bind(this));
this.eventBus._on("currentoutlineitem", this._currentOutlineItem.bind(this));
this.eventBus._on("pagechanging", evt => {
this._currentPageNumber = evt.pageNumber;
});
this.eventBus._on("pagesloaded", evt => {
this._isPagesLoaded = !!evt.pagesCount;
this._currentOutlineItemCapability?.resolve(this._isPagesLoaded);
});
this.eventBus._on("sidebarviewchanged", evt => {
this._sidebarView = evt.view;
});
}
reset() {
super.reset();
this._outline = null;
this._pageNumberToDestHashCapability = null;
this._currentPageNumber = 1;
this._isPagesLoaded = null;
this._currentOutlineItemCapability?.resolve(false);
this._currentOutlineItemCapability = null;
}
_dispatchEvent(outlineCount) {
this._currentOutlineItemCapability = Promise.withResolvers();
if (outlineCount === 0 || this._pdfDocument?.loadingParams.disableAutoFetch) {
this._currentOutlineItemCapability.resolve(false);
} else if (this._isPagesLoaded !== null) {
this._currentOutlineItemCapability.resolve(this._isPagesLoaded);
}
this.eventBus.dispatch("outlineloaded", {
source: this,
outlineCount,
currentOutlineItemPromise: this._currentOutlineItemCapability.promise
});
}
_bindLink(element, {
url,
newWindow,
action,
attachment,
dest,
setOCGState
}) {
const {
linkService
} = this;
if (url) {
linkService.addLinkAttributes(element, url, newWindow);
return;
}
if (action) {
element.href = linkService.getAnchorUrl("");
element.onclick = () => {
linkService.executeNamedAction(action);
return false;
};
return;
}
if (attachment) {
element.href = linkService.getAnchorUrl("");
element.onclick = () => {
this.downloadManager.openOrDownloadData(attachment.content, attachment.filename);
return false;
};
return;
}
if (setOCGState) {
element.href = linkService.getAnchorUrl("");
element.onclick = () => {
linkService.executeSetOCGState(setOCGState);
return false;
};
return;
}
element.href = linkService.getDestinationHash(dest);
element.onclick = evt => {
this._updateCurrentTreeItem(evt.target.parentNode);
if (dest) {
linkService.goToDestination(dest);
}
return false;
};
}
_setStyles(element, {
bold,
italic
}) {
if (bold) {
element.style.fontWeight = "bold";
}
if (italic) {
element.style.fontStyle = "italic";
}
}
_addToggleButton(div, {
count,
items
}) {
let hidden = false;
if (count < 0) {
let totalCount = items.length;
if (totalCount > 0) {
const queue = [...items];
while (queue.length > 0) {
const {
count: nestedCount,
items: nestedItems
} = queue.shift();
if (nestedCount > 0 && nestedItems.length > 0) {
totalCount += nestedItems.length;
queue.push(...nestedItems);
}
}
}
if (Math.abs(count) === totalCount) {
hidden = true;
}
}
super._addToggleButton(div, hidden);
}
_toggleAllTreeItems() {
if (!this._outline) {
return;
}
super._toggleAllTreeItems();
}
render({
outline,
pdfDocument
}) {
if (this._outline) {
this.reset();
}
this._outline = outline || null;
this._pdfDocument = pdfDocument || null;
if (!outline) {
this._dispatchEvent(0);
return;
}
const fragment = document.createDocumentFragment();
const queue = [{
parent: fragment,
items: outline
}];
let outlineCount = 0,
hasAnyNesting = false;
while (queue.length > 0) {
const levelData = queue.shift();
for (const item of levelData.items) {
const div = document.createElement("div");
div.className = "treeItem";
const element = document.createElement("a");
this._bindLink(element, item);
this._setStyles(element, item);
element.textContent = this._normalizeTextContent(item.title);
div.append(element);
if (item.items.length > 0) {
hasAnyNesting = true;
this._addToggleButton(div, item);
const itemsDiv = document.createElement("div");
itemsDiv.className = "treeItems";
div.append(itemsDiv);
queue.push({
parent: itemsDiv,
items: item.items
});
}
levelData.parent.append(div);
outlineCount++;
}
}
this._finishRendering(fragment, outlineCount, hasAnyNesting);
}
async _currentOutlineItem() {
if (!this._isPagesLoaded) {
throw new Error("_currentOutlineItem: All pages have not been loaded.");
}
if (!this._outline || !this._pdfDocument) {
return;
}
const pageNumberToDestHash = await this._getPageNumberToDestHash(this._pdfDocument);
if (!pageNumberToDestHash) {
return;
}
this._updateCurrentTreeItem(null);
if (this._sidebarView !== SidebarView.OUTLINE) {
return;
}
for (let i = this._currentPageNumber; i > 0; i--) {
const destHash = pageNumberToDestHash.get(i);
if (!destHash) {
continue;
}
const linkElement = this.container.querySelector(`a[href="${destHash}"]`);
if (!linkElement) {
continue;
}
this._scrollToCurrentTreeItem(linkElement.parentNode);
break;
}
}
async _getPageNumberToDestHash(pdfDocument) {
if (this._pageNumberToDestHashCapability) {
return this._pageNumberToDestHashCapability.promise;
}
this._pageNumberToDestHashCapability = Promise.withResolvers();
const pageNumberToDestHash = new Map(),
pageNumberNesting = new Map();
const queue = [{
nesting: 0,
items: this._outline
}];
while (queue.length > 0) {
const levelData = queue.shift(),
currentNesting = levelData.nesting;
for (const {
dest,
items
} of levelData.items) {
let explicitDest, pageNumber;
if (typeof dest === "string") {
explicitDest = await pdfDocument.getDestination(dest);
if (pdfDocument !== this._pdfDocument) {
return null;
}
} else {
explicitDest = dest;
}
if (Array.isArray(explicitDest)) {
const [destRef] = explicitDest;
if (destRef && typeof destRef === "object") {
pageNumber = pdfDocument.cachedPageNumber(destRef);
} else if (Number.isInteger(destRef)) {
pageNumber = destRef + 1;
}
if (Number.isInteger(pageNumber) && (!pageNumberToDestHash.has(pageNumber) || currentNesting > pageNumberNesting.get(pageNumber))) {
const destHash = this.linkService.getDestinationHash(dest);
pageNumberToDestHash.set(pageNumber, destHash);
pageNumberNesting.set(pageNumber, currentNesting);
}
}
if (items.length > 0) {
queue.push({
nesting: currentNesting + 1,
items
});
}
}
}
this._pageNumberToDestHashCapability.resolve(pageNumberToDestHash.size > 0 ? pageNumberToDestHash : null);
return this._pageNumberToDestHashCapability.promise;
}
}
;// ./web/pdf_presentation_mode.js
const DELAY_BEFORE_HIDING_CONTROLS = 3000;
const ACTIVE_SELECTOR = "pdfPresentationMode";
const CONTROLS_SELECTOR = "pdfPresentationModeControls";
const MOUSE_SCROLL_COOLDOWN_TIME = 50;
const PAGE_SWITCH_THRESHOLD = 0.1;
const SWIPE_MIN_DISTANCE_THRESHOLD = 50;
const SWIPE_ANGLE_THRESHOLD = Math.PI / 6;
class PDFPresentationMode {
#state = PresentationModeState.UNKNOWN;
#args = null;
#fullscreenChangeAbortController = null;
#windowAbortController = null;
constructor({
container,
pdfViewer,
eventBus
}) {
this.container = container;
this.pdfViewer = pdfViewer;
this.eventBus = eventBus;
this.contextMenuOpen = false;
this.mouseScrollTimeStamp = 0;
this.mouseScrollDelta = 0;
this.touchSwipeState = null;
}
async request() {
const {
container,
pdfViewer
} = this;
if (this.active || !pdfViewer.pagesCount || !container.requestFullscreen) {
return false;
}
this.#addFullscreenChangeListeners();
this.#notifyStateChange(PresentationModeState.CHANGING);
const promise = container.requestFullscreen();
this.#args = {
pageNumber: pdfViewer.currentPageNumber,
scaleValue: pdfViewer.currentScaleValue,
scrollMode: pdfViewer.scrollMode,
spreadMode: null,
annotationEditorMode: null
};
if (pdfViewer.spreadMode !== SpreadMode.NONE && !(pdfViewer.pageViewsReady && pdfViewer.hasEqualPageSizes)) {
console.warn("Ignoring Spread modes when entering PresentationMode, " + "since the document may contain varying page sizes.");
this.#args.spreadMode = pdfViewer.spreadMode;
}
if (pdfViewer.annotationEditorMode !== AnnotationEditorType.DISABLE) {
this.#args.annotationEditorMode = pdfViewer.annotationEditorMode;
}
try {
await promise;
pdfViewer.focus();
return true;
} catch {
this.#removeFullscreenChangeListeners();
this.#notifyStateChange(PresentationModeState.NORMAL);
}
return false;
}
get active() {
return this.#state === PresentationModeState.CHANGING || this.#state === PresentationModeState.FULLSCREEN;
}
#mouseWheel(evt) {
if (!this.active) {
return;
}
evt.preventDefault();
const delta = normalizeWheelEventDelta(evt);
const currentTime = Date.now();
const storedTime = this.mouseScrollTimeStamp;
if (currentTime > storedTime && currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
return;
}
if (this.mouseScrollDelta > 0 && delta < 0 || this.mouseScrollDelta < 0 && delta > 0) {
this.#resetMouseScrollState();
}
this.mouseScrollDelta += delta;
if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
const totalDelta = this.mouseScrollDelta;
this.#resetMouseScrollState();
const success = totalDelta > 0 ? this.pdfViewer.previousPage() : this.pdfViewer.nextPage();
if (success) {
this.mouseScrollTimeStamp = currentTime;
}
}
}
#notifyStateChange(state) {
this.#state = state;
this.eventBus.dispatch("presentationmodechanged", {
source: this,
state
});
}
#enter() {
this.#notifyStateChange(PresentationModeState.FULLSCREEN);
this.container.classList.add(ACTIVE_SELECTOR);
setTimeout(() => {
this.pdfViewer.scrollMode = ScrollMode.PAGE;
if (this.#args.spreadMode !== null) {
this.pdfViewer.spreadMode = SpreadMode.NONE;
}
this.pdfViewer.currentPageNumber = this.#args.pageNumber;
this.pdfViewer.currentScaleValue = "page-fit";
if (this.#args.annotationEditorMode !== null) {
this.pdfViewer.annotationEditorMode = {
mode: AnnotationEditorType.NONE
};
}
}, 0);
this.#addWindowListeners();
this.#showControls();
this.contextMenuOpen = false;
document.getSelection().empty();
}
#exit() {
const pageNumber = this.pdfViewer.currentPageNumber;
this.container.classList.remove(ACTIVE_SELECTOR);
setTimeout(() => {
this.#removeFullscreenChangeListeners();
this.#notifyStateChange(PresentationModeState.NORMAL);
this.pdfViewer.scrollMode = this.#args.scrollMode;
if (this.#args.spreadMode !== null) {
this.pdfViewer.spreadMode = this.#args.spreadMode;
}
this.pdfViewer.currentScaleValue = this.#args.scaleValue;
this.pdfViewer.currentPageNumber = pageNumber;
if (this.#args.annotationEditorMode !== null) {
this.pdfViewer.annotationEditorMode = {
mode: this.#args.annotationEditorMode
};
}
this.#args = null;
}, 0);
this.#removeWindowListeners();
this.#hideControls();
this.#resetMouseScrollState();
this.contextMenuOpen = false;
}
#mouseDown(evt) {
if (this.contextMenuOpen) {
this.contextMenuOpen = false;
evt.preventDefault();
return;
}
if (evt.button !== 0) {
return;
}
if (evt.target.href && evt.target.parentNode?.hasAttribute("data-internal-link")) {
return;
}
evt.preventDefault();
if (evt.shiftKey) {
this.pdfViewer.previousPage();
} else {
this.pdfViewer.nextPage();
}
}
#contextMenu() {
this.contextMenuOpen = true;
}
#showControls() {
if (this.controlsTimeout) {
clearTimeout(this.controlsTimeout);
} else {
this.container.classList.add(CONTROLS_SELECTOR);
}
this.controlsTimeout = setTimeout(() => {
this.container.classList.remove(CONTROLS_SELECTOR);
delete this.controlsTimeout;
}, DELAY_BEFORE_HIDING_CONTROLS);
}
#hideControls() {
if (!this.controlsTimeout) {
return;
}
clearTimeout(this.controlsTimeout);
this.container.classList.remove(CONTROLS_SELECTOR);
delete this.controlsTimeout;
}
#resetMouseScrollState() {
this.mouseScrollTimeStamp = 0;
this.mouseScrollDelta = 0;
}
#touchSwipe(evt) {
if (!this.active) {
return;
}
if (evt.touches.length > 1) {
this.touchSwipeState = null;
return;
}
switch (evt.type) {
case "touchstart":
this.touchSwipeState = {
startX: evt.touches[0].pageX,
startY: evt.touches[0].pageY,
endX: evt.touches[0].pageX,
endY: evt.touches[0].pageY
};
break;
case "touchmove":
if (this.touchSwipeState === null) {
return;
}
this.touchSwipeState.endX = evt.touches[0].pageX;
this.touchSwipeState.endY = evt.touches[0].pageY;
evt.preventDefault();
break;
case "touchend":
if (this.touchSwipeState === null) {
return;
}
let delta = 0;
const dx = this.touchSwipeState.endX - this.touchSwipeState.startX;
const dy = this.touchSwipeState.endY - this.touchSwipeState.startY;
const absAngle = Math.abs(Math.atan2(dy, dx));
if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD && (absAngle <= SWIPE_ANGLE_THRESHOLD || absAngle >= Math.PI - SWIPE_ANGLE_THRESHOLD)) {
delta = dx;
} else if (Math.abs(dy) > SWIPE_MIN_DISTANCE_THRESHOLD && Math.abs(absAngle - Math.PI / 2) <= SWIPE_ANGLE_THRESHOLD) {
delta = dy;
}
if (delta > 0) {
this.pdfViewer.previousPage();
} else if (delta < 0) {
this.pdfViewer.nextPage();
}
break;
}
}
#addWindowListeners() {
if (this.#windowAbortController) {
return;
}
this.#windowAbortController = new AbortController();
const {
signal
} = this.#windowAbortController;
const touchSwipeBind = this.#touchSwipe.bind(this);
window.addEventListener("mousemove", this.#showControls.bind(this), {
signal
});
window.addEventListener("mousedown", this.#mouseDown.bind(this), {
signal
});
window.addEventListener("wheel", this.#mouseWheel.bind(this), {
passive: false,
signal
});
window.addEventListener("keydown", this.#resetMouseScrollState.bind(this), {
signal
});
window.addEventListener("contextmenu", this.#contextMenu.bind(this), {
signal
});
window.addEventListener("touchstart", touchSwipeBind, {
signal
});
window.addEventListener("touchmove", touchSwipeBind, {
signal
});
window.addEventListener("touchend", touchSwipeBind, {
signal
});
}
#removeWindowListeners() {
this.#windowAbortController?.abort();
this.#windowAbortController = null;
}
#addFullscreenChangeListeners() {
if (this.#fullscreenChangeAbortController) {
return;
}
this.#fullscreenChangeAbortController = new AbortController();
window.addEventListener("fullscreenchange", () => {
if (document.fullscreenElement) {
this.#enter();
} else {
this.#exit();
}
}, {
signal: this.#fullscreenChangeAbortController.signal
});
}
#removeFullscreenChangeListeners() {
this.#fullscreenChangeAbortController?.abort();
this.#fullscreenChangeAbortController = null;
}
}
;// ./web/xfa_layer_builder.js
class XfaLayerBuilder {
constructor({
pdfPage,
annotationStorage = null,
linkService,
xfaHtml = null
}) {
this.pdfPage = pdfPage;
this.annotationStorage = annotationStorage;
this.linkService = linkService;
this.xfaHtml = xfaHtml;
this.div = null;
this._cancelled = false;
}
async render(viewport, intent = "display") {
if (intent === "print") {
const parameters = {
viewport: viewport.clone({
dontFlip: true
}),
div: this.div,
xfaHtml: this.xfaHtml,
annotationStorage: this.annotationStorage,
linkService: this.linkService,
intent
};
this.div = document.createElement("div");
parameters.div = this.div;
return XfaLayer.render(parameters);
}
const xfaHtml = await this.pdfPage.getXfa();
if (this._cancelled || !xfaHtml) {
return {
textDivs: []
};
}
const parameters = {
viewport: viewport.clone({
dontFlip: true
}),
div: this.div,
xfaHtml,
annotationStorage: this.annotationStorage,
linkService: this.linkService,
intent
};
if (this.div) {
return XfaLayer.update(parameters);
}
this.div = document.createElement("div");
parameters.div = this.div;
return XfaLayer.render(parameters);
}
cancel() {
this._cancelled = true;
}
hide() {
if (!this.div) {
return;
}
this.div.hidden = true;
}
}
;// ./web/print_utils.js
function getXfaHtmlForPrinting(printContainer, pdfDocument) {
const xfaHtml = pdfDocument.allXfaHtml;
const linkService = new SimpleLinkService();
const scale = Math.round(PixelsPerInch.PDF_TO_CSS_UNITS * 100) / 100;
for (const xfaPage of xfaHtml.children) {
const page = document.createElement("div");
page.className = "xfaPrintedPage";
printContainer.append(page);
const builder = new XfaLayerBuilder({
pdfPage: null,
annotationStorage: pdfDocument.annotationStorage,
linkService,
xfaHtml: xfaPage
});
const viewport = getXfaPageViewport(xfaPage, {
scale
});
builder.render(viewport, "print");
page.append(builder.div);
}
}
;// ./web/firefox_print_service.js
function composePage(pdfDocument, pageNumber, size, printContainer, printResolution, optionalContentConfigPromise, printAnnotationStoragePromise) {
const canvas = document.createElement("canvas");
const PRINT_UNITS = printResolution / PixelsPerInch.PDF;
canvas.width = Math.floor(size.width * PRINT_UNITS);
canvas.height = Math.floor(size.height * PRINT_UNITS);
const canvasWrapper = document.createElement("div");
canvasWrapper.className = "printedPage";
canvasWrapper.append(canvas);
printContainer.append(canvasWrapper);
let currentRenderTask = null;
canvas.mozPrintCallback = function (obj) {
const ctx = obj.context;
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
let thisRenderTask = null;
Promise.all([pdfDocument.getPage(pageNumber), printAnnotationStoragePromise]).then(function ([pdfPage, printAnnotationStorage]) {
if (currentRenderTask) {
currentRenderTask.cancel();
currentRenderTask = null;
}
const renderContext = {
canvasContext: ctx,
transform: [PRINT_UNITS, 0, 0, PRINT_UNITS, 0, 0],
viewport: pdfPage.getViewport({
scale: 1,
rotation: size.rotation
}),
intent: "print",
annotationMode: AnnotationMode.ENABLE_STORAGE,
optionalContentConfigPromise,
printAnnotationStorage
};
currentRenderTask = thisRenderTask = pdfPage.render(renderContext);
return thisRenderTask.promise;
}).then(function () {
if (currentRenderTask === thisRenderTask) {
currentRenderTask = null;
}
obj.done();
}, function (reason) {
if (!(reason instanceof RenderingCancelledException)) {
console.error(reason);
}
if (currentRenderTask === thisRenderTask) {
currentRenderTask.cancel();
currentRenderTask = null;
}
if ("abort" in obj) {
obj.abort();
} else {
obj.done();
}
});
};
}
class FirefoxPrintService {
constructor({
pdfDocument,
pagesOverview,
printContainer,
printResolution,
printAnnotationStoragePromise = null
}) {
this.pdfDocument = pdfDocument;
this.pagesOverview = pagesOverview;
this.printContainer = printContainer;
this._printResolution = printResolution || 150;
this._optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
intent: "print"
});
this._printAnnotationStoragePromise = printAnnotationStoragePromise || Promise.resolve();
}
layout() {
const {
pdfDocument,
pagesOverview,
printContainer,
_printResolution,
_optionalContentConfigPromise,
_printAnnotationStoragePromise
} = this;
const body = document.querySelector("body");
body.setAttribute("data-pdfjsprinting", true);
const {
width,
height
} = this.pagesOverview[0];
const hasEqualPageSizes = this.pagesOverview.every(size => size.width === width && size.height === height);
if (!hasEqualPageSizes) {
console.warn("Not all pages have the same size. The printed result may be incorrect!");
}
this.pageStyleSheet = document.createElement("style");
this.pageStyleSheet.textContent = `@page { size: ${width}pt ${height}pt;}`;
body.append(this.pageStyleSheet);
if (pdfDocument.isPureXfa) {
getXfaHtmlForPrinting(printContainer, pdfDocument);
return;
}
for (let i = 0, ii = pagesOverview.length; i < ii; ++i) {
composePage(pdfDocument, i + 1, pagesOverview[i], printContainer, _printResolution, _optionalContentConfigPromise, _printAnnotationStoragePromise);
}
}
destroy() {
this.printContainer.textContent = "";
const body = document.querySelector("body");
body.removeAttribute("data-pdfjsprinting");
if (this.pageStyleSheet) {
this.pageStyleSheet.remove();
this.pageStyleSheet = null;
}
}
}
class PDFPrintServiceFactory {
static get supportsPrinting() {
const canvas = document.createElement("canvas");
return shadow(this, "supportsPrinting", "mozPrintCallback" in canvas);
}
static createPrintService(params) {
return new FirefoxPrintService(params);
}
}
;// ./web/pdf_rendering_queue.js
const CLEANUP_TIMEOUT = 30000;
class PDFRenderingQueue {
constructor() {
this.pdfViewer = null;
this.pdfThumbnailViewer = null;
this.onIdle = null;
this.highestPriorityPage = null;
this.idleTimeout = null;
this.printing = false;
this.isThumbnailViewEnabled = false;
}
setViewer(pdfViewer) {
this.pdfViewer = pdfViewer;
}
setThumbnailViewer(pdfThumbnailViewer) {
this.pdfThumbnailViewer = pdfThumbnailViewer;
}
isHighestPriority(view) {
return this.highestPriorityPage === view.renderingId;
}
renderHighestPriority(currentlyVisiblePages) {
if (this.idleTimeout) {
clearTimeout(this.idleTimeout);
this.idleTimeout = null;
}
if (this.pdfViewer.forceRendering(currentlyVisiblePages)) {
return;
}
if (this.isThumbnailViewEnabled && this.pdfThumbnailViewer?.forceRendering()) {
return;
}
if (this.printing) {
return;
}
if (this.onIdle) {
this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT);
}
}
getHighestPriority(visible, views, scrolledDown, preRenderExtra = false) {
const visibleViews = visible.views,
numVisible = visibleViews.length;
if (numVisible === 0) {
return null;
}
for (let i = 0; i < numVisible; i++) {
const view = visibleViews[i].view;
if (!this.isViewFinished(view)) {
return view;
}
}
const firstId = visible.first.id,
lastId = visible.last.id;
if (lastId - firstId + 1 > numVisible) {
const visibleIds = visible.ids;
for (let i = 1, ii = lastId - firstId; i < ii; i++) {
const holeId = scrolledDown ? firstId + i : lastId - i;
if (visibleIds.has(holeId)) {
continue;
}
const holeView = views[holeId - 1];
if (!this.isViewFinished(holeView)) {
return holeView;
}
}
}
let preRenderIndex = scrolledDown ? lastId : firstId - 2;
let preRenderView = views[preRenderIndex];
if (preRenderView && !this.isViewFinished(preRenderView)) {
return preRenderView;
}
if (preRenderExtra) {
preRenderIndex += scrolledDown ? 1 : -1;
preRenderView = views[preRenderIndex];
if (preRenderView && !this.isViewFinished(preRenderView)) {
return preRenderView;
}
}
return null;
}
isViewFinished(view) {
return view.renderingState === RenderingStates.FINISHED;
}
renderView(view) {
switch (view.renderingState) {
case RenderingStates.FINISHED:
return false;
case RenderingStates.PAUSED:
this.highestPriorityPage = view.renderingId;
view.resume();
break;
case RenderingStates.RUNNING:
this.highestPriorityPage = view.renderingId;
break;
case RenderingStates.INITIAL:
this.highestPriorityPage = view.renderingId;
view.draw().finally(() => {
this.renderHighestPriority();
}).catch(reason => {
if (reason instanceof RenderingCancelledException) {
return;
}
console.error(`renderView: "${reason}"`);
});
break;
}
return true;
}
}
;// ./web/pdf_scripting_manager.js
class PDFScriptingManager {
#closeCapability = null;
#destroyCapability = null;
#docProperties = null;
#eventAbortController = null;
#eventBus = null;
#externalServices = null;
#pdfDocument = null;
#pdfViewer = null;
#ready = false;
#scripting = null;
#willPrintCapability = null;
constructor({
eventBus,
externalServices = null,
docProperties = null
}) {
this.#eventBus = eventBus;
this.#externalServices = externalServices;
this.#docProperties = docProperties;
}
setViewer(pdfViewer) {
this.#pdfViewer = pdfViewer;
}
async setDocument(pdfDocument) {
if (this.#pdfDocument) {
await this.#destroyScripting();
}
this.#pdfDocument = pdfDocument;
if (!pdfDocument) {
return;
}
const [objects, calculationOrder, docActions] = await Promise.all([pdfDocument.getFieldObjects(), pdfDocument.getCalculationOrderIds(), pdfDocument.getJSActions()]);
if (!objects && !docActions) {
await this.#destroyScripting();
return;
}
if (pdfDocument !== this.#pdfDocument) {
return;
}
try {
this.#scripting = this.#initScripting();
} catch (error) {
console.error(`setDocument: "${error.message}".`);
await this.#destroyScripting();
return;
}
const eventBus = this.#eventBus;
this.#eventAbortController = new AbortController();
const {
signal
} = this.#eventAbortController;
eventBus._on("updatefromsandbox", event => {
if (event?.source === window) {
this.#updateFromSandbox(event.detail);
}
}, {
signal
});
eventBus._on("dispatcheventinsandbox", event => {
this.#scripting?.dispatchEventInSandbox(event.detail);
}, {
signal
});
eventBus._on("pagechanging", ({
pageNumber,
previous
}) => {
if (pageNumber === previous) {
return;
}
this.#dispatchPageClose(previous);
this.#dispatchPageOpen(pageNumber);
}, {
signal
});
eventBus._on("pagerendered", ({
pageNumber
}) => {
if (!this._pageOpenPending.has(pageNumber)) {
return;
}
if (pageNumber !== this.#pdfViewer.currentPageNumber) {
return;
}
this.#dispatchPageOpen(pageNumber);
}, {
signal
});
eventBus._on("pagesdestroy", async () => {
await this.#dispatchPageClose(this.#pdfViewer.currentPageNumber);
await this.#scripting?.dispatchEventInSandbox({
id: "doc",
name: "WillClose"
});
this.#closeCapability?.resolve();
}, {
signal
});
try {
const docProperties = await this.#docProperties(pdfDocument);
if (pdfDocument !== this.#pdfDocument) {
return;
}
await this.#scripting.createSandbox({
objects,
calculationOrder,
appInfo: {
platform: navigator.platform,
language: navigator.language
},
docInfo: {
...docProperties,
actions: docActions
}
});
eventBus.dispatch("sandboxcreated", {
source: this
});
} catch (error) {
console.error(`setDocument: "${error.message}".`);
await this.#destroyScripting();
return;
}
await this.#scripting?.dispatchEventInSandbox({
id: "doc",
name: "Open"
});
await this.#dispatchPageOpen(this.#pdfViewer.currentPageNumber, true);
Promise.resolve().then(() => {
if (pdfDocument === this.#pdfDocument) {
this.#ready = true;
}
});
}
async dispatchWillSave() {
return this.#scripting?.dispatchEventInSandbox({
id: "doc",
name: "WillSave"
});
}
async dispatchDidSave() {
return this.#scripting?.dispatchEventInSandbox({
id: "doc",
name: "DidSave"
});
}
async dispatchWillPrint() {
if (!this.#scripting) {
return;
}
await this.#willPrintCapability?.promise;
this.#willPrintCapability = Promise.withResolvers();
try {
await this.#scripting.dispatchEventInSandbox({
id: "doc",
name: "WillPrint"
});
} catch (ex) {
this.#willPrintCapability.resolve();
this.#willPrintCapability = null;
throw ex;
}
await this.#willPrintCapability.promise;
}
async dispatchDidPrint() {
return this.#scripting?.dispatchEventInSandbox({
id: "doc",
name: "DidPrint"
});
}
get destroyPromise() {
return this.#destroyCapability?.promise || null;
}
get ready() {
return this.#ready;
}
get _pageOpenPending() {
return shadow(this, "_pageOpenPending", new Set());
}
get _visitedPages() {
return shadow(this, "_visitedPages", new Map());
}
async #updateFromSandbox(detail) {
const pdfViewer = this.#pdfViewer;
const isInPresentationMode = pdfViewer.isInPresentationMode || pdfViewer.isChangingPresentationMode;
const {
id,
siblings,
command,
value
} = detail;
if (!id) {
switch (command) {
case "clear":
console.clear();
break;
case "error":
console.error(value);
break;
case "layout":
if (!isInPresentationMode) {
const modes = apiPageLayoutToViewerModes(value);
pdfViewer.spreadMode = modes.spreadMode;
}
break;
case "page-num":
pdfViewer.currentPageNumber = value + 1;
break;
case "print":
await pdfViewer.pagesPromise;
this.#eventBus.dispatch("print", {
source: this
});
break;
case "println":
console.log(value);
break;
case "zoom":
if (!isInPresentationMode) {
pdfViewer.currentScaleValue = value;
}
break;
case "SaveAs":
this.#eventBus.dispatch("download", {
source: this
});
break;
case "FirstPage":
pdfViewer.currentPageNumber = 1;
break;
case "LastPage":
pdfViewer.currentPageNumber = pdfViewer.pagesCount;
break;
case "NextPage":
pdfViewer.nextPage();
break;
case "PrevPage":
pdfViewer.previousPage();
break;
case "ZoomViewIn":
if (!isInPresentationMode) {
pdfViewer.increaseScale();
}
break;
case "ZoomViewOut":
if (!isInPresentationMode) {
pdfViewer.decreaseScale();
}
break;
case "WillPrintFinished":
this.#willPrintCapability?.resolve();
this.#willPrintCapability = null;
break;
}
return;
}
if (isInPresentationMode && detail.focus) {
return;
}
delete detail.id;
delete detail.siblings;
const ids = siblings ? [id, ...siblings] : [id];
for (const elementId of ids) {
const element = document.querySelector(`[data-element-id="${elementId}"]`);
if (element) {
element.dispatchEvent(new CustomEvent("updatefromsandbox", {
detail
}));
} else {
this.#pdfDocument?.annotationStorage.setValue(elementId, detail);
}
}
}
async #dispatchPageOpen(pageNumber, initialize = false) {
const pdfDocument = this.#pdfDocument,
visitedPages = this._visitedPages;
if (initialize) {
this.#closeCapability = Promise.withResolvers();
}
if (!this.#closeCapability) {
return;
}
const pageView = this.#pdfViewer.getPageView(pageNumber - 1);
if (pageView?.renderingState !== RenderingStates.FINISHED) {
this._pageOpenPending.add(pageNumber);
return;
}
this._pageOpenPending.delete(pageNumber);
const actionsPromise = (async () => {
const actions = await (!visitedPages.has(pageNumber) ? pageView.pdfPage?.getJSActions() : null);
if (pdfDocument !== this.#pdfDocument) {
return;
}
await this.#scripting?.dispatchEventInSandbox({
id: "page",
name: "PageOpen",
pageNumber,
actions
});
})();
visitedPages.set(pageNumber, actionsPromise);
}
async #dispatchPageClose(pageNumber) {
const pdfDocument = this.#pdfDocument,
visitedPages = this._visitedPages;
if (!this.#closeCapability) {
return;
}
if (this._pageOpenPending.has(pageNumber)) {
return;
}
const actionsPromise = visitedPages.get(pageNumber);
if (!actionsPromise) {
return;
}
visitedPages.set(pageNumber, null);
await actionsPromise;
if (pdfDocument !== this.#pdfDocument) {
return;
}
await this.#scripting?.dispatchEventInSandbox({
id: "page",
name: "PageClose",
pageNumber
});
}
#initScripting() {
this.#destroyCapability = Promise.withResolvers();
if (this.#scripting) {
throw new Error("#initScripting: Scripting already exists.");
}
return this.#externalServices.createScripting();
}
async #destroyScripting() {
if (!this.#scripting) {
this.#pdfDocument = null;
this.#destroyCapability?.resolve();
return;
}
if (this.#closeCapability) {
await Promise.race([this.#closeCapability.promise, new Promise(resolve => {
setTimeout(resolve, 1000);
})]).catch(() => {});
this.#closeCapability = null;
}
this.#pdfDocument = null;
try {
await this.#scripting.destroySandbox();
} catch {}
this.#willPrintCapability?.reject(new Error("Scripting destroyed."));
this.#willPrintCapability = null;
this.#eventAbortController?.abort();
this.#eventAbortController = null;
this._pageOpenPending.clear();
this._visitedPages.clear();
this.#scripting = null;
this.#ready = false;
this.#destroyCapability?.resolve();
}
}
;// ./web/pdf_sidebar.js
const SIDEBAR_WIDTH_VAR = "--sidebar-width";
const SIDEBAR_MIN_WIDTH = 200;
const SIDEBAR_RESIZING_CLASS = "sidebarResizing";
const UI_NOTIFICATION_CLASS = "pdfSidebarNotification";
class PDFSidebar {
#isRTL = false;
#mouseAC = null;
#outerContainerWidth = null;
#width = null;
constructor({
elements,
eventBus,
l10n
}) {
this.isOpen = false;
this.active = SidebarView.THUMBS;
this.isInitialViewSet = false;
this.isInitialEventDispatched = false;
this.onToggled = null;
this.onUpdateThumbnails = null;
this.outerContainer = elements.outerContainer;
this.sidebarContainer = elements.sidebarContainer;
this.toggleButton = elements.toggleButton;
this.resizer = elements.resizer;
this.thumbnailButton = elements.thumbnailButton;
this.outlineButton = elements.outlineButton;
this.attachmentsButton = elements.attachmentsButton;
this.layersButton = elements.layersButton;
this.thumbnailView = elements.thumbnailView;
this.outlineView = elements.outlineView;
this.attachmentsView = elements.attachmentsView;
this.layersView = elements.layersView;
this._currentOutlineItemButton = elements.currentOutlineItemButton;
this.eventBus = eventBus;
this.#isRTL = l10n.getDirection() === "rtl";
this.#addEventListeners();
}
reset() {
this.isInitialViewSet = false;
this.isInitialEventDispatched = false;
this.#hideUINotification(true);
this.switchView(SidebarView.THUMBS);
this.outlineButton.disabled = false;
this.attachmentsButton.disabled = false;
this.layersButton.disabled = false;
this._currentOutlineItemButton.disabled = true;
}
get visibleView() {
return this.isOpen ? this.active : SidebarView.NONE;
}
setInitialView(view = SidebarView.NONE) {
if (this.isInitialViewSet) {
return;
}
this.isInitialViewSet = true;
if (view === SidebarView.NONE || view === SidebarView.UNKNOWN) {
this.#dispatchEvent();
return;
}
this.switchView(view, true);
if (!this.isInitialEventDispatched) {
this.#dispatchEvent();
}
}
switchView(view, forceOpen = false) {
const isViewChanged = view !== this.active;
let forceRendering = false;
switch (view) {
case SidebarView.NONE:
if (this.isOpen) {
this.close();
}
return;
case SidebarView.THUMBS:
if (this.isOpen && isViewChanged) {
forceRendering = true;
}
break;
case SidebarView.OUTLINE:
if (this.outlineButton.disabled) {
return;
}
break;
case SidebarView.ATTACHMENTS:
if (this.attachmentsButton.disabled) {
return;
}
break;
case SidebarView.LAYERS:
if (this.layersButton.disabled) {
return;
}
break;
default:
console.error(`PDFSidebar.switchView: "${view}" is not a valid view.`);
return;
}
this.active = view;
toggleCheckedBtn(this.thumbnailButton, view === SidebarView.THUMBS, this.thumbnailView);
toggleCheckedBtn(this.outlineButton, view === SidebarView.OUTLINE, this.outlineView);
toggleCheckedBtn(this.attachmentsButton, view === SidebarView.ATTACHMENTS, this.attachmentsView);
toggleCheckedBtn(this.layersButton, view === SidebarView.LAYERS, this.layersView);
if (forceOpen && !this.isOpen) {
this.open();
return;
}
if (forceRendering) {
this.onUpdateThumbnails();
this.onToggled();
}
if (isViewChanged) {
this.#dispatchEvent();
}
}
open() {
if (this.isOpen) {
return;
}
this.isOpen = true;
toggleExpandedBtn(this.toggleButton, true);
this.outerContainer.classList.add("sidebarMoving", "sidebarOpen");
if (this.active === SidebarView.THUMBS) {
this.onUpdateThumbnails();
}
this.onToggled();
this.#dispatchEvent();
this.#hideUINotification();
}
close(evt = null) {
if (!this.isOpen) {
return;
}
this.isOpen = false;
toggleExpandedBtn(this.toggleButton, false);
this.outerContainer.classList.add("sidebarMoving");
this.outerContainer.classList.remove("sidebarOpen");
this.onToggled();
this.#dispatchEvent();
if (evt?.detail > 0) {
this.toggleButton.blur();
}
}
toggle(evt = null) {
if (this.isOpen) {
this.close(evt);
} else {
this.open();
}
}
#dispatchEvent() {
if (this.isInitialViewSet) {
this.isInitialEventDispatched ||= true;
}
this.eventBus.dispatch("sidebarviewchanged", {
source: this,
view: this.visibleView
});
}
#showUINotification() {
this.toggleButton.setAttribute("data-l10n-id", "pdfjs-toggle-sidebar-notification-button");
if (!this.isOpen) {
this.toggleButton.classList.add(UI_NOTIFICATION_CLASS);
}
}
#hideUINotification(reset = false) {
if (this.isOpen || reset) {
this.toggleButton.classList.remove(UI_NOTIFICATION_CLASS);
}
if (reset) {
this.toggleButton.setAttribute("data-l10n-id", "pdfjs-toggle-sidebar-button");
}
}
#addEventListeners() {
const {
eventBus,
outerContainer
} = this;
this.sidebarContainer.addEventListener("transitionend", evt => {
if (evt.target === this.sidebarContainer) {
outerContainer.classList.remove("sidebarMoving");
eventBus.dispatch("resize", {
source: this
});
}
});
this.toggleButton.addEventListener("click", evt => {
this.toggle(evt);
});
this.thumbnailButton.addEventListener("click", () => {
this.switchView(SidebarView.THUMBS);
});
this.outlineButton.addEventListener("click", () => {
this.switchView(SidebarView.OUTLINE);
});
this.outlineButton.addEventListener("dblclick", () => {
eventBus.dispatch("toggleoutlinetree", {
source: this
});
});
this.attachmentsButton.addEventListener("click", () => {
this.switchView(SidebarView.ATTACHMENTS);
});
this.layersButton.addEventListener("click", () => {
this.switchView(SidebarView.LAYERS);
});
this.layersButton.addEventListener("dblclick", () => {
eventBus.dispatch("resetlayers", {
source: this
});
});
this._currentOutlineItemButton.addEventListener("click", () => {
eventBus.dispatch("currentoutlineitem", {
source: this
});
});
const onTreeLoaded = (count, button, view) => {
button.disabled = !count;
if (count) {
this.#showUINotification();
} else if (this.active === view) {
this.switchView(SidebarView.THUMBS);
}
};
eventBus._on("outlineloaded", evt => {
onTreeLoaded(evt.outlineCount, this.outlineButton, SidebarView.OUTLINE);
evt.currentOutlineItemPromise.then(enabled => {
if (!this.isInitialViewSet) {
return;
}
this._currentOutlineItemButton.disabled = !enabled;
});
});
eventBus._on("attachmentsloaded", evt => {
onTreeLoaded(evt.attachmentsCount, this.attachmentsButton, SidebarView.ATTACHMENTS);
});
eventBus._on("layersloaded", evt => {
onTreeLoaded(evt.layersCount, this.layersButton, SidebarView.LAYERS);
});
eventBus._on("presentationmodechanged", evt => {
if (evt.state === PresentationModeState.NORMAL && this.visibleView === SidebarView.THUMBS) {
this.onUpdateThumbnails();
}
});
this.resizer.addEventListener("mousedown", evt => {
if (evt.button !== 0) {
return;
}
outerContainer.classList.add(SIDEBAR_RESIZING_CLASS);
this.#mouseAC = new AbortController();
const opts = {
signal: this.#mouseAC.signal
};
window.addEventListener("mousemove", this.#mouseMove.bind(this), opts);
window.addEventListener("mouseup", this.#mouseUp.bind(this), opts);
window.addEventListener("blur", this.#mouseUp.bind(this), opts);
});
eventBus._on("resize", evt => {
if (evt.source !== window) {
return;
}
this.#outerContainerWidth = null;
if (!this.#width) {
return;
}
if (!this.isOpen) {
this.#updateWidth(this.#width);
return;
}
outerContainer.classList.add(SIDEBAR_RESIZING_CLASS);
const updated = this.#updateWidth(this.#width);
Promise.resolve().then(() => {
outerContainer.classList.remove(SIDEBAR_RESIZING_CLASS);
if (updated) {
eventBus.dispatch("resize", {
source: this
});
}
});
});
}
get outerContainerWidth() {
return this.#outerContainerWidth ||= this.outerContainer.clientWidth;
}
#updateWidth(width = 0) {
const maxWidth = Math.floor(this.outerContainerWidth / 2);
if (width > maxWidth) {
width = maxWidth;
}
if (width < SIDEBAR_MIN_WIDTH) {
width = SIDEBAR_MIN_WIDTH;
}
if (width === this.#width) {
return false;
}
this.#width = width;
docStyle.setProperty(SIDEBAR_WIDTH_VAR, `${width}px`);
return true;
}
#mouseMove(evt) {
let width = evt.clientX;
if (this.#isRTL) {
width = this.outerContainerWidth - width;
}
this.#updateWidth(width);
}
#mouseUp(evt) {
this.outerContainer.classList.remove(SIDEBAR_RESIZING_CLASS);
this.eventBus.dispatch("resize", {
source: this
});
this.#mouseAC?.abort();
this.#mouseAC = null;
}
}
;// ./web/pdf_thumbnail_view.js
const DRAW_UPSCALE_FACTOR = 2;
const MAX_NUM_SCALING_STEPS = 3;
const THUMBNAIL_WIDTH = 98;
class TempImageFactory {
static #tempCanvas = null;
static getCanvas(width, height) {
const tempCanvas = this.#tempCanvas ||= document.createElement("canvas");
tempCanvas.width = width;
tempCanvas.height = height;
const ctx = tempCanvas.getContext("2d", {
alpha: false
});
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, width, height);
ctx.restore();
return [tempCanvas, tempCanvas.getContext("2d")];
}
static destroyCanvas() {
const tempCanvas = this.#tempCanvas;
if (tempCanvas) {
tempCanvas.width = 0;
tempCanvas.height = 0;
}
this.#tempCanvas = null;
}
}
class PDFThumbnailView {
constructor({
container,
eventBus,
id,
defaultViewport,
optionalContentConfigPromise,
linkService,
renderingQueue,
pageColors,
enableHWA
}) {
this.id = id;
this.renderingId = "thumbnail" + id;
this.pageLabel = null;
this.pdfPage = null;
this.rotation = 0;
this.viewport = defaultViewport;
this.pdfPageRotate = defaultViewport.rotation;
this._optionalContentConfigPromise = optionalContentConfigPromise || null;
this.pageColors = pageColors || null;
this.enableHWA = enableHWA || false;
this.eventBus = eventBus;
this.linkService = linkService;
this.renderingQueue = renderingQueue;
this.renderTask = null;
this.renderingState = RenderingStates.INITIAL;
this.resume = null;
const anchor = document.createElement("a");
anchor.href = linkService.getAnchorUrl("#page=" + id);
anchor.setAttribute("data-l10n-id", "pdfjs-thumb-page-title");
anchor.setAttribute("data-l10n-args", this.#pageL10nArgs);
anchor.onclick = function () {
linkService.goToPage(id);
return false;
};
this.anchor = anchor;
const div = document.createElement("div");
div.className = "thumbnail";
div.setAttribute("data-page-number", this.id);
this.div = div;
this.#updateDims();
const img = document.createElement("div");
img.className = "thumbnailImage";
this._placeholderImg = img;
div.append(img);
anchor.append(div);
container.append(anchor);
}
#updateDims() {
const {
width,
height
} = this.viewport;
const ratio = width / height;
this.canvasWidth = THUMBNAIL_WIDTH;
this.canvasHeight = this.canvasWidth / ratio | 0;
this.scale = this.canvasWidth / width;
const {
style
} = this.div;
style.setProperty("--thumbnail-width", `${this.canvasWidth}px`);
style.setProperty("--thumbnail-height", `${this.canvasHeight}px`);
}
setPdfPage(pdfPage) {
this.pdfPage = pdfPage;
this.pdfPageRotate = pdfPage.rotate;
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = pdfPage.getViewport({
scale: 1,
rotation: totalRotation
});
this.reset();
}
reset() {
this.cancelRendering();
this.renderingState = RenderingStates.INITIAL;
this.div.removeAttribute("data-loaded");
this.image?.replaceWith(this._placeholderImg);
this.#updateDims();
if (this.image) {
this.image.removeAttribute("src");
delete this.image;
}
}
update({
rotation = null
}) {
if (typeof rotation === "number") {
this.rotation = rotation;
}
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = this.viewport.clone({
scale: 1,
rotation: totalRotation
});
this.reset();
}
cancelRendering() {
if (this.renderTask) {
this.renderTask.cancel();
this.renderTask = null;
}
this.resume = null;
}
#getPageDrawContext(upscaleFactor = 1, enableHWA = this.enableHWA) {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d", {
alpha: false,
willReadFrequently: !enableHWA
});
const outputScale = new OutputScale();
canvas.width = upscaleFactor * this.canvasWidth * outputScale.sx | 0;
canvas.height = upscaleFactor * this.canvasHeight * outputScale.sy | 0;
const transform = outputScale.scaled ? [outputScale.sx, 0, 0, outputScale.sy, 0, 0] : null;
return {
ctx,
canvas,
transform
};
}
#convertCanvasToImage(canvas) {
if (this.renderingState !== RenderingStates.FINISHED) {
throw new Error("#convertCanvasToImage: Rendering has not finished.");
}
const reducedCanvas = this.#reduceImage(canvas);
const image = document.createElement("img");
image.className = "thumbnailImage";
image.setAttribute("data-l10n-id", "pdfjs-thumb-page-canvas");
image.setAttribute("data-l10n-args", this.#pageL10nArgs);
image.src = reducedCanvas.toDataURL();
this.image = image;
this.div.setAttribute("data-loaded", true);
this._placeholderImg.replaceWith(image);
reducedCanvas.width = 0;
reducedCanvas.height = 0;
}
async #finishRenderTask(renderTask, canvas, error = null) {
if (renderTask === this.renderTask) {
this.renderTask = null;
}
if (error instanceof RenderingCancelledException) {
return;
}
this.renderingState = RenderingStates.FINISHED;
this.#convertCanvasToImage(canvas);
if (error) {
throw error;
}
}
async draw() {
if (this.renderingState !== RenderingStates.INITIAL) {
console.error("Must be in new state before drawing");
return undefined;
}
const {
pdfPage
} = this;
if (!pdfPage) {
this.renderingState = RenderingStates.FINISHED;
throw new Error("pdfPage is not loaded");
}
this.renderingState = RenderingStates.RUNNING;
const {
ctx,
canvas,
transform
} = this.#getPageDrawContext(DRAW_UPSCALE_FACTOR);
const drawViewport = this.viewport.clone({
scale: DRAW_UPSCALE_FACTOR * this.scale
});
const renderContinueCallback = cont => {
if (!this.renderingQueue.isHighestPriority(this)) {
this.renderingState = RenderingStates.PAUSED;
this.resume = () => {
this.renderingState = RenderingStates.RUNNING;
cont();
};
return;
}
cont();
};
const renderContext = {
canvasContext: ctx,
transform,
viewport: drawViewport,
optionalContentConfigPromise: this._optionalContentConfigPromise,
pageColors: this.pageColors
};
const renderTask = this.renderTask = pdfPage.render(renderContext);
renderTask.onContinue = renderContinueCallback;
const resultPromise = renderTask.promise.then(() => this.#finishRenderTask(renderTask, canvas), error => this.#finishRenderTask(renderTask, canvas, error));
resultPromise.finally(() => {
canvas.width = 0;
canvas.height = 0;
this.eventBus.dispatch("thumbnailrendered", {
source: this,
pageNumber: this.id,
pdfPage: this.pdfPage
});
});
return resultPromise;
}
setImage(pageView) {
if (this.renderingState !== RenderingStates.INITIAL) {
return;
}
const {
thumbnailCanvas: canvas,
pdfPage,
scale
} = pageView;
if (!canvas) {
return;
}
if (!this.pdfPage) {
this.setPdfPage(pdfPage);
}
if (scale < this.scale) {
return;
}
this.renderingState = RenderingStates.FINISHED;
this.#convertCanvasToImage(canvas);
}
#reduceImage(img) {
const {
ctx,
canvas
} = this.#getPageDrawContext(1, true);
if (img.width <= 2 * canvas.width) {
ctx.drawImage(img, 0, 0, img.width, img.height, 0, 0, canvas.width, canvas.height);
return canvas;
}
let reducedWidth = canvas.width << MAX_NUM_SCALING_STEPS;
let reducedHeight = canvas.height << MAX_NUM_SCALING_STEPS;
const [reducedImage, reducedImageCtx] = TempImageFactory.getCanvas(reducedWidth, reducedHeight);
while (reducedWidth > img.width || reducedHeight > img.height) {
reducedWidth >>= 1;
reducedHeight >>= 1;
}
reducedImageCtx.drawImage(img, 0, 0, img.width, img.height, 0, 0, reducedWidth, reducedHeight);
while (reducedWidth > 2 * canvas.width) {
reducedImageCtx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight, 0, 0, reducedWidth >> 1, reducedHeight >> 1);
reducedWidth >>= 1;
reducedHeight >>= 1;
}
ctx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight, 0, 0, canvas.width, canvas.height);
return canvas;
}
get #pageL10nArgs() {
return JSON.stringify({
page: this.pageLabel ?? this.id
});
}
setPageLabel(label) {
this.pageLabel = typeof label === "string" ? label : null;
this.anchor.setAttribute("data-l10n-args", this.#pageL10nArgs);
if (this.renderingState !== RenderingStates.FINISHED) {
return;
}
this.image?.setAttribute("data-l10n-args", this.#pageL10nArgs);
}
}
;// ./web/pdf_thumbnail_viewer.js
const THUMBNAIL_SCROLL_MARGIN = -19;
const THUMBNAIL_SELECTED_CLASS = "selected";
class PDFThumbnailViewer {
constructor({
container,
eventBus,
linkService,
renderingQueue,
pageColors,
abortSignal,
enableHWA
}) {
this.container = container;
this.eventBus = eventBus;
this.linkService = linkService;
this.renderingQueue = renderingQueue;
this.pageColors = pageColors || null;
this.enableHWA = enableHWA || false;
this.scroll = watchScroll(this.container, this.#scrollUpdated.bind(this), abortSignal);
this.#resetView();
}
#scrollUpdated() {
this.renderingQueue.renderHighestPriority();
}
getThumbnail(index) {
return this._thumbnails[index];
}
#getVisibleThumbs() {
return getVisibleElements({
scrollEl: this.container,
views: this._thumbnails
});
}
scrollThumbnailIntoView(pageNumber) {
if (!this.pdfDocument) {
return;
}
const thumbnailView = this._thumbnails[pageNumber - 1];
if (!thumbnailView) {
console.error('scrollThumbnailIntoView: Invalid "pageNumber" parameter.');
return;
}
if (pageNumber !== this._currentPageNumber) {
const prevThumbnailView = this._thumbnails[this._currentPageNumber - 1];
prevThumbnailView.div.classList.remove(THUMBNAIL_SELECTED_CLASS);
thumbnailView.div.classList.add(THUMBNAIL_SELECTED_CLASS);
}
const {
first,
last,
views
} = this.#getVisibleThumbs();
if (views.length > 0) {
let shouldScroll = false;
if (pageNumber <= first.id || pageNumber >= last.id) {
shouldScroll = true;
} else {
for (const {
id,
percent
} of views) {
if (id !== pageNumber) {
continue;
}
shouldScroll = percent < 100;
break;
}
}
if (shouldScroll) {
scrollIntoView(thumbnailView.div, {
top: THUMBNAIL_SCROLL_MARGIN
});
}
}
this._currentPageNumber = pageNumber;
}
get pagesRotation() {
return this._pagesRotation;
}
set pagesRotation(rotation) {
if (!isValidRotation(rotation)) {
throw new Error("Invalid thumbnails rotation angle.");
}
if (!this.pdfDocument) {
return;
}
if (this._pagesRotation === rotation) {
return;
}
this._pagesRotation = rotation;
const updateArgs = {
rotation
};
for (const thumbnail of this._thumbnails) {
thumbnail.update(updateArgs);
}
}
cleanup() {
for (const thumbnail of this._thumbnails) {
if (thumbnail.renderingState !== RenderingStates.FINISHED) {
thumbnail.reset();
}
}
TempImageFactory.destroyCanvas();
}
#resetView() {
this._thumbnails = [];
this._currentPageNumber = 1;
this._pageLabels = null;
this._pagesRotation = 0;
this.container.textContent = "";
}
setDocument(pdfDocument) {
if (this.pdfDocument) {
this.#cancelRendering();
this.#resetView();
}
this.pdfDocument = pdfDocument;
if (!pdfDocument) {
return;
}
const firstPagePromise = pdfDocument.getPage(1);
const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
intent: "display"
});
firstPagePromise.then(firstPdfPage => {
const pagesCount = pdfDocument.numPages;
const viewport = firstPdfPage.getViewport({
scale: 1
});
for (let pageNum = 1; pageNum <= pagesCount; ++pageNum) {
const thumbnail = new PDFThumbnailView({
container: this.container,
eventBus: this.eventBus,
id: pageNum,
defaultViewport: viewport.clone(),
optionalContentConfigPromise,
linkService: this.linkService,
renderingQueue: this.renderingQueue,
pageColors: this.pageColors,
enableHWA: this.enableHWA
});
this._thumbnails.push(thumbnail);
}
this._thumbnails[0]?.setPdfPage(firstPdfPage);
const thumbnailView = this._thumbnails[this._currentPageNumber - 1];
thumbnailView.div.classList.add(THUMBNAIL_SELECTED_CLASS);
}).catch(reason => {
console.error("Unable to initialize thumbnail viewer", reason);
});
}
#cancelRendering() {
for (const thumbnail of this._thumbnails) {
thumbnail.cancelRendering();
}
}
setPageLabels(labels) {
if (!this.pdfDocument) {
return;
}
if (!labels) {
this._pageLabels = null;
} else if (!(Array.isArray(labels) && this.pdfDocument.numPages === labels.length)) {
this._pageLabels = null;
console.error("PDFThumbnailViewer_setPageLabels: Invalid page labels.");
} else {
this._pageLabels = labels;
}
for (let i = 0, ii = this._thumbnails.length; i < ii; i++) {
this._thumbnails[i].setPageLabel(this._pageLabels?.[i] ?? null);
}
}
async #ensurePdfPageLoaded(thumbView) {
if (thumbView.pdfPage) {
return thumbView.pdfPage;
}
try {
const pdfPage = await this.pdfDocument.getPage(thumbView.id);
if (!thumbView.pdfPage) {
thumbView.setPdfPage(pdfPage);
}
return pdfPage;
} catch (reason) {
console.error("Unable to get page for thumb view", reason);
return null;
}
}
#getScrollAhead(visible) {
if (visible.first?.id === 1) {
return true;
} else if (visible.last?.id === this._thumbnails.length) {
return false;
}
return this.scroll.down;
}
forceRendering() {
const visibleThumbs = this.#getVisibleThumbs();
const scrollAhead = this.#getScrollAhead(visibleThumbs);
const thumbView = this.renderingQueue.getHighestPriority(visibleThumbs, this._thumbnails, scrollAhead);
if (thumbView) {
this.#ensurePdfPageLoaded(thumbView).then(() => {
this.renderingQueue.renderView(thumbView);
});
return true;
}
return false;
}
}
;// ./web/annotation_editor_layer_builder.js
class AnnotationEditorLayerBuilder {
#annotationLayer = null;
#drawLayer = null;
#onAppend = null;
#structTreeLayer = null;
#textLayer = null;
#uiManager;
constructor(options) {
this.pdfPage = options.pdfPage;
this.accessibilityManager = options.accessibilityManager;
this.l10n = options.l10n;
this.annotationEditorLayer = null;
this.div = null;
this._cancelled = false;
this.#uiManager = options.uiManager;
this.#annotationLayer = options.annotationLayer || null;
this.#textLayer = options.textLayer || null;
this.#drawLayer = options.drawLayer || null;
this.#onAppend = options.onAppend || null;
this.#structTreeLayer = options.structTreeLayer || null;
}
async render(viewport, intent = "display") {
if (intent !== "display") {
return;
}
if (this._cancelled) {
return;
}
const clonedViewport = viewport.clone({
dontFlip: true
});
if (this.div) {
this.annotationEditorLayer.update({
viewport: clonedViewport
});
this.show();
return;
}
const div = this.div = document.createElement("div");
div.className = "annotationEditorLayer";
div.hidden = true;
div.dir = this.#uiManager.direction;
this.#onAppend?.(div);
this.annotationEditorLayer = new AnnotationEditorLayer({
uiManager: this.#uiManager,
div,
structTreeLayer: this.#structTreeLayer,
accessibilityManager: this.accessibilityManager,
pageIndex: this.pdfPage.pageNumber - 1,
l10n: this.l10n,
viewport: clonedViewport,
annotationLayer: this.#annotationLayer,
textLayer: this.#textLayer,
drawLayer: this.#drawLayer
});
const parameters = {
viewport: clonedViewport,
div,
annotations: null,
intent
};
this.annotationEditorLayer.render(parameters);
this.show();
}
cancel() {
this._cancelled = true;
if (!this.div) {
return;
}
this.annotationEditorLayer.destroy();
}
hide() {
if (!this.div) {
return;
}
this.div.hidden = true;
}
show() {
if (!this.div || this.annotationEditorLayer.isInvisible) {
return;
}
this.div.hidden = false;
}
}
;// ./web/annotation_layer_builder.js
class AnnotationLayerBuilder {
#onAppend = null;
#eventAbortController = null;
constructor({
pdfPage,
linkService,
downloadManager,
annotationStorage = null,
imageResourcesPath = "",
renderForms = true,
enableScripting = false,
hasJSActionsPromise = null,
fieldObjectsPromise = null,
annotationCanvasMap = null,
accessibilityManager = null,
annotationEditorUIManager = null,
onAppend = null
}) {
this.pdfPage = pdfPage;
this.linkService = linkService;
this.downloadManager = downloadManager;
this.imageResourcesPath = imageResourcesPath;
this.renderForms = renderForms;
this.annotationStorage = annotationStorage;
this.enableScripting = enableScripting;
this._hasJSActionsPromise = hasJSActionsPromise || Promise.resolve(false);
this._fieldObjectsPromise = fieldObjectsPromise || Promise.resolve(null);
this._annotationCanvasMap = annotationCanvasMap;
this._accessibilityManager = accessibilityManager;
this._annotationEditorUIManager = annotationEditorUIManager;
this.#onAppend = onAppend;
this.annotationLayer = null;
this.div = null;
this._cancelled = false;
this._eventBus = linkService.eventBus;
}
async render(viewport, options, intent = "display") {
if (this.div) {
if (this._cancelled || !this.annotationLayer) {
return;
}
this.annotationLayer.update({
viewport: viewport.clone({
dontFlip: true
})
});
return;
}
const [annotations, hasJSActions, fieldObjects] = await Promise.all([this.pdfPage.getAnnotations({
intent
}), this._hasJSActionsPromise, this._fieldObjectsPromise]);
if (this._cancelled) {
return;
}
const div = this.div = document.createElement("div");
div.className = "annotationLayer";
this.#onAppend?.(div);
if (annotations.length === 0) {
this.hide();
return;
}
this.annotationLayer = new AnnotationLayer({
div,
accessibilityManager: this._accessibilityManager,
annotationCanvasMap: this._annotationCanvasMap,
annotationEditorUIManager: this._annotationEditorUIManager,
page: this.pdfPage,
viewport: viewport.clone({
dontFlip: true
}),
structTreeLayer: options?.structTreeLayer || null
});
await this.annotationLayer.render({
annotations,
imageResourcesPath: this.imageResourcesPath,
renderForms: this.renderForms,
linkService: this.linkService,
downloadManager: this.downloadManager,
annotationStorage: this.annotationStorage,
enableScripting: this.enableScripting,
hasJSActions,
fieldObjects
});
if (this.linkService.isInPresentationMode) {
this.#updatePresentationModeState(PresentationModeState.FULLSCREEN);
}
if (!this.#eventAbortController) {
this.#eventAbortController = new AbortController();
this._eventBus?._on("presentationmodechanged", evt => {
this.#updatePresentationModeState(evt.state);
}, {
signal: this.#eventAbortController.signal
});
}
}
cancel() {
this._cancelled = true;
this.#eventAbortController?.abort();
this.#eventAbortController = null;
}
hide() {
if (!this.div) {
return;
}
this.div.hidden = true;
}
hasEditableAnnotations() {
return !!this.annotationLayer?.hasEditableAnnotations();
}
#updatePresentationModeState(state) {
if (!this.div) {
return;
}
let disableFormElements = false;
switch (state) {
case PresentationModeState.FULLSCREEN:
disableFormElements = true;
break;
case PresentationModeState.NORMAL:
break;
default:
return;
}
for (const section of this.div.childNodes) {
if (section.hasAttribute("data-internal-link")) {
continue;
}
section.inert = disableFormElements;
}
}
}
;// ./web/draw_layer_builder.js
class DrawLayerBuilder {
#drawLayer = null;
constructor(options) {
this.pageIndex = options.pageIndex;
}
async render(intent = "display") {
if (intent !== "display" || this.#drawLayer || this._cancelled) {
return;
}
this.#drawLayer = new DrawLayer({
pageIndex: this.pageIndex
});
}
cancel() {
this._cancelled = true;
if (!this.#drawLayer) {
return;
}
this.#drawLayer.destroy();
this.#drawLayer = null;
}
setParent(parent) {
this.#drawLayer?.setParent(parent);
}
getDrawLayer() {
return this.#drawLayer;
}
}
;// ./web/struct_tree_layer_builder.js
const PDF_ROLE_TO_HTML_ROLE = {
Document: null,
DocumentFragment: null,
Part: "group",
Sect: "group",
Div: "group",
Aside: "note",
NonStruct: "none",
P: null,
H: "heading",
Title: null,
FENote: "note",
Sub: "group",
Lbl: null,
Span: null,
Em: null,
Strong: null,
Link: "link",
Annot: "note",
Form: "form",
Ruby: null,
RB: null,
RT: null,
RP: null,
Warichu: null,
WT: null,
WP: null,
L: "list",
LI: "listitem",
LBody: null,
Table: "table",
TR: "row",
TH: "columnheader",
TD: "cell",
THead: "columnheader",
TBody: null,
TFoot: null,
Caption: null,
Figure: "figure",
Formula: null,
Artifact: null
};
const HEADING_PATTERN = /^H(\d+)$/;
class StructTreeLayerBuilder {
#promise;
#treeDom = null;
#treePromise;
#elementAttributes = new Map();
#rawDims;
#elementsToAddToTextLayer = null;
constructor(pdfPage, rawDims) {
this.#promise = pdfPage.getStructTree();
this.#rawDims = rawDims;
}
async render() {
if (this.#treePromise) {
return this.#treePromise;
}
const {
promise,
resolve,
reject
} = Promise.withResolvers();
this.#treePromise = promise;
try {
this.#treeDom = this.#walk(await this.#promise);
} catch (ex) {
reject(ex);
}
this.#promise = null;
this.#treeDom?.classList.add("structTree");
resolve(this.#treeDom);
return promise;
}
async getAriaAttributes(annotationId) {
try {
await this.render();
return this.#elementAttributes.get(annotationId);
} catch {}
return null;
}
hide() {
if (this.#treeDom && !this.#treeDom.hidden) {
this.#treeDom.hidden = true;
}
}
show() {
if (this.#treeDom?.hidden) {
this.#treeDom.hidden = false;
}
}
#setAttributes(structElement, htmlElement) {
const {
alt,
id,
lang
} = structElement;
if (alt !== undefined) {
let added = false;
const label = removeNullCharacters(alt);
for (const child of structElement.children) {
if (child.type === "annotation") {
let attrs = this.#elementAttributes.get(child.id);
if (!attrs) {
attrs = new Map();
this.#elementAttributes.set(child.id, attrs);
}
attrs.set("aria-label", label);
added = true;
}
}
if (!added) {
htmlElement.setAttribute("aria-label", label);
}
}
if (id !== undefined) {
htmlElement.setAttribute("aria-owns", id);
}
if (lang !== undefined) {
htmlElement.setAttribute("lang", removeNullCharacters(lang, true));
}
}
#addImageInTextLayer(node, element) {
const {
alt,
bbox,
children
} = node;
const child = children?.[0];
if (!this.#rawDims || !alt || !bbox || child?.type !== "content") {
return false;
}
const {
id
} = child;
if (!id) {
return false;
}
element.setAttribute("aria-owns", id);
const img = document.createElement("span");
(this.#elementsToAddToTextLayer ||= new Map()).set(id, img);
img.setAttribute("role", "img");
img.setAttribute("aria-label", removeNullCharacters(alt));
const {
pageHeight,
pageX,
pageY
} = this.#rawDims;
const calc = "calc(var(--scale-factor)*";
const {
style
} = img;
style.width = `${calc}${bbox[2] - bbox[0]}px)`;
style.height = `${calc}${bbox[3] - bbox[1]}px)`;
style.left = `${calc}${bbox[0] - pageX}px)`;
style.top = `${calc}${pageHeight - bbox[3] + pageY}px)`;
return true;
}
addElementsToTextLayer() {
if (!this.#elementsToAddToTextLayer) {
return;
}
for (const [id, img] of this.#elementsToAddToTextLayer) {
document.getElementById(id)?.append(img);
}
this.#elementsToAddToTextLayer.clear();
this.#elementsToAddToTextLayer = null;
}
#walk(node) {
if (!node) {
return null;
}
const element = document.createElement("span");
if ("role" in node) {
const {
role
} = node;
const match = role.match(HEADING_PATTERN);
if (match) {
element.setAttribute("role", "heading");
element.setAttribute("aria-level", match[1]);
} else if (PDF_ROLE_TO_HTML_ROLE[role]) {
element.setAttribute("role", PDF_ROLE_TO_HTML_ROLE[role]);
}
if (role === "Figure" && this.#addImageInTextLayer(node, element)) {
return element;
}
}
this.#setAttributes(node, element);
if (node.children) {
if (node.children.length === 1 && "id" in node.children[0]) {
this.#setAttributes(node.children[0], element);
} else {
for (const kid of node.children) {
element.append(this.#walk(kid));
}
}
}
return element;
}
}
;// ./web/text_accessibility.js
class TextAccessibilityManager {
#enabled = false;
#textChildren = null;
#textNodes = new Map();
#waitingElements = new Map();
setTextMapping(textDivs) {
this.#textChildren = textDivs;
}
static #compareElementPositions(e1, e2) {
const rect1 = e1.getBoundingClientRect();
const rect2 = e2.getBoundingClientRect();
if (rect1.width === 0 && rect1.height === 0) {
return +1;
}
if (rect2.width === 0 && rect2.height === 0) {
return -1;
}
const top1 = rect1.y;
const bot1 = rect1.y + rect1.height;
const mid1 = rect1.y + rect1.height / 2;
const top2 = rect2.y;
const bot2 = rect2.y + rect2.height;
const mid2 = rect2.y + rect2.height / 2;
if (mid1 <= top2 && mid2 >= bot1) {
return -1;
}
if (mid2 <= top1 && mid1 >= bot2) {
return +1;
}
const centerX1 = rect1.x + rect1.width / 2;
const centerX2 = rect2.x + rect2.width / 2;
return centerX1 - centerX2;
}
enable() {
if (this.#enabled) {
throw new Error("TextAccessibilityManager is already enabled.");
}
if (!this.#textChildren) {
throw new Error("Text divs and strings have not been set.");
}
this.#enabled = true;
this.#textChildren = this.#textChildren.slice();
this.#textChildren.sort(TextAccessibilityManager.#compareElementPositions);
if (this.#textNodes.size > 0) {
const textChildren = this.#textChildren;
for (const [id, nodeIndex] of this.#textNodes) {
const element = document.getElementById(id);
if (!element) {
this.#textNodes.delete(id);
continue;
}
this.#addIdToAriaOwns(id, textChildren[nodeIndex]);
}
}
for (const [element, isRemovable] of this.#waitingElements) {
this.addPointerInTextLayer(element, isRemovable);
}
this.#waitingElements.clear();
}
disable() {
if (!this.#enabled) {
return;
}
this.#waitingElements.clear();
this.#textChildren = null;
this.#enabled = false;
}
removePointerInTextLayer(element) {
if (!this.#enabled) {
this.#waitingElements.delete(element);
return;
}
const children = this.#textChildren;
if (!children || children.length === 0) {
return;
}
const {
id
} = element;
const nodeIndex = this.#textNodes.get(id);
if (nodeIndex === undefined) {
return;
}
const node = children[nodeIndex];
this.#textNodes.delete(id);
let owns = node.getAttribute("aria-owns");
if (owns?.includes(id)) {
owns = owns.split(" ").filter(x => x !== id).join(" ");
if (owns) {
node.setAttribute("aria-owns", owns);
} else {
node.removeAttribute("aria-owns");
node.setAttribute("role", "presentation");
}
}
}
#addIdToAriaOwns(id, node) {
const owns = node.getAttribute("aria-owns");
if (!owns?.includes(id)) {
node.setAttribute("aria-owns", owns ? `${owns} ${id}` : id);
}
node.removeAttribute("role");
}
addPointerInTextLayer(element, isRemovable) {
const {
id
} = element;
if (!id) {
return null;
}
if (!this.#enabled) {
this.#waitingElements.set(element, isRemovable);
return null;
}
if (isRemovable) {
this.removePointerInTextLayer(element);
}
const children = this.#textChildren;
if (!children || children.length === 0) {
return null;
}
const index = binarySearchFirstItem(children, node => TextAccessibilityManager.#compareElementPositions(element, node) < 0);
const nodeIndex = Math.max(0, index - 1);
const child = children[nodeIndex];
this.#addIdToAriaOwns(id, child);
this.#textNodes.set(id, nodeIndex);
const parent = child.parentNode;
return parent?.classList.contains("markedContent") ? parent.id : null;
}
moveElementInDOM(container, element, contentElement, isRemovable) {
const id = this.addPointerInTextLayer(contentElement, isRemovable);
if (!container.hasChildNodes()) {
container.append(element);
return id;
}
const children = Array.from(container.childNodes).filter(node => node !== element);
if (children.length === 0) {
return id;
}
const elementToCompare = contentElement || element;
const index = binarySearchFirstItem(children, node => TextAccessibilityManager.#compareElementPositions(elementToCompare, node) < 0);
if (index === 0) {
children[0].before(element);
} else {
children[index - 1].after(element);
}
return id;
}
}
;// ./web/text_highlighter.js
class TextHighlighter {
#eventAbortController = null;
constructor({
findController,
eventBus,
pageIndex
}) {
this.findController = findController;
this.matches = [];
this.eventBus = eventBus;
this.pageIdx = pageIndex;
this.textDivs = null;
this.textContentItemsStr = null;
this.enabled = false;
}
setTextMapping(divs, texts) {
this.textDivs = divs;
this.textContentItemsStr = texts;
}
enable() {
if (!this.textDivs || !this.textContentItemsStr) {
throw new Error("Text divs and strings have not been set.");
}
if (this.enabled) {
throw new Error("TextHighlighter is already enabled.");
}
this.enabled = true;
if (!this.#eventAbortController) {
this.#eventAbortController = new AbortController();
this.eventBus._on("updatetextlayermatches", evt => {
if (evt.pageIndex === this.pageIdx || evt.pageIndex === -1) {
this._updateMatches();
}
}, {
signal: this.#eventAbortController.signal
});
}
this._updateMatches();
}
disable() {
if (!this.enabled) {
return;
}
this.enabled = false;
this.#eventAbortController?.abort();
this.#eventAbortController = null;
this._updateMatches(true);
}
_convertMatches(matches, matchesLength) {
if (!matches) {
return [];
}
const {
textContentItemsStr
} = this;
let i = 0,
iIndex = 0;
const end = textContentItemsStr.length - 1;
const result = [];
for (let m = 0, mm = matches.length; m < mm; m++) {
let matchIdx = matches[m];
while (i !== end && matchIdx >= iIndex + textContentItemsStr[i].length) {
iIndex += textContentItemsStr[i].length;
i++;
}
if (i === textContentItemsStr.length) {
console.error("Could not find a matching mapping");
}
const match = {
begin: {
divIdx: i,
offset: matchIdx - iIndex
}
};
matchIdx += matchesLength[m];
while (i !== end && matchIdx > iIndex + textContentItemsStr[i].length) {
iIndex += textContentItemsStr[i].length;
i++;
}
match.end = {
divIdx: i,
offset: matchIdx - iIndex
};
result.push(match);
}
return result;
}
_renderMatches(matches) {
if (matches.length === 0) {
return;
}
const {
findController,
pageIdx
} = this;
const {
textContentItemsStr,
textDivs
} = this;
const isSelectedPage = pageIdx === findController.selected.pageIdx;
const selectedMatchIdx = findController.selected.matchIdx;
const highlightAll = findController.state.highlightAll;
let prevEnd = null;
const infinity = {
divIdx: -1,
offset: undefined
};
function beginText(begin, className) {
const divIdx = begin.divIdx;
textDivs[divIdx].textContent = "";
return appendTextToDiv(divIdx, 0, begin.offset, className);
}
function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
let div = textDivs[divIdx];
if (div.nodeType === Node.TEXT_NODE) {
const span = document.createElement("span");
div.before(span);
span.append(div);
textDivs[divIdx] = span;
div = span;
}
const content = textContentItemsStr[divIdx].substring(fromOffset, toOffset);
const node = document.createTextNode(content);
if (className) {
const span = document.createElement("span");
span.className = `${className} appended`;
span.append(node);
div.append(span);
return className.includes("selected") ? span.offsetLeft : 0;
}
div.append(node);
return 0;
}
let i0 = selectedMatchIdx,
i1 = i0 + 1;
if (highlightAll) {
i0 = 0;
i1 = matches.length;
} else if (!isSelectedPage) {
return;
}
let lastDivIdx = -1;
let lastOffset = -1;
for (let i = i0; i < i1; i++) {
const match = matches[i];
const begin = match.begin;
if (begin.divIdx === lastDivIdx && begin.offset === lastOffset) {
continue;
}
lastDivIdx = begin.divIdx;
lastOffset = begin.offset;
const end = match.end;
const isSelected = isSelectedPage && i === selectedMatchIdx;
const highlightSuffix = isSelected ? " selected" : "";
let selectedLeft = 0;
if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
if (prevEnd !== null) {
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
}
beginText(begin);
} else {
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
}
if (begin.divIdx === end.divIdx) {
selectedLeft = appendTextToDiv(begin.divIdx, begin.offset, end.offset, "highlight" + highlightSuffix);
} else {
selectedLeft = appendTextToDiv(begin.divIdx, begin.offset, infinity.offset, "highlight begin" + highlightSuffix);
for (let n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
textDivs[n0].className = "highlight middle" + highlightSuffix;
}
beginText(end, "highlight end" + highlightSuffix);
}
prevEnd = end;
if (isSelected) {
findController.scrollMatchIntoView({
element: textDivs[begin.divIdx],
selectedLeft,
pageIndex: pageIdx,
matchIndex: selectedMatchIdx
});
}
}
if (prevEnd) {
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
}
}
_updateMatches(reset = false) {
if (!this.enabled && !reset) {
return;
}
const {
findController,
matches,
pageIdx
} = this;
const {
textContentItemsStr,
textDivs
} = this;
let clearedUntilDivIdx = -1;
for (const match of matches) {
const begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
for (let n = begin, end = match.end.divIdx; n <= end; n++) {
const div = textDivs[n];
div.textContent = textContentItemsStr[n];
div.className = "";
}
clearedUntilDivIdx = match.end.divIdx + 1;
}
if (!findController?.highlightMatches || reset) {
return;
}
const pageMatches = findController.pageMatches[pageIdx] || null;
const pageMatchesLength = findController.pageMatchesLength[pageIdx] || null;
this.matches = this._convertMatches(pageMatches, pageMatchesLength);
this._renderMatches(this.matches);
}
}
;// ./web/text_layer_builder.js
class TextLayerBuilder {
#enablePermissions = false;
#onAppend = null;
#renderingDone = false;
#textLayer = null;
static #textLayers = new Map();
static #selectionChangeAbortController = null;
constructor({
pdfPage,
highlighter = null,
accessibilityManager = null,
enablePermissions = false,
onAppend = null
}) {
this.pdfPage = pdfPage;
this.highlighter = highlighter;
this.accessibilityManager = accessibilityManager;
this.#enablePermissions = enablePermissions === true;
this.#onAppend = onAppend;
this.div = document.createElement("div");
this.div.tabIndex = 0;
this.div.className = "textLayer";
}
async render(viewport, textContentParams = null) {
if (this.#renderingDone && this.#textLayer) {
this.#textLayer.update({
viewport,
onBefore: this.hide.bind(this)
});
this.show();
return;
}
this.cancel();
this.#textLayer = new TextLayer({
textContentSource: this.pdfPage.streamTextContent(textContentParams || {
includeMarkedContent: true,
disableNormalization: true
}),
container: this.div,
viewport
});
const {
textDivs,
textContentItemsStr
} = this.#textLayer;
this.highlighter?.setTextMapping(textDivs, textContentItemsStr);
this.accessibilityManager?.setTextMapping(textDivs);
await this.#textLayer.render();
this.#renderingDone = true;
const endOfContent = document.createElement("div");
endOfContent.className = "endOfContent";
this.div.append(endOfContent);
this.#bindMouse(endOfContent);
this.#onAppend?.(this.div);
this.highlighter?.enable();
this.accessibilityManager?.enable();
}
hide() {
if (!this.div.hidden && this.#renderingDone) {
this.highlighter?.disable();
this.div.hidden = true;
}
}
show() {
if (this.div.hidden && this.#renderingDone) {
this.div.hidden = false;
this.highlighter?.enable();
}
}
cancel() {
this.#textLayer?.cancel();
this.#textLayer = null;
this.highlighter?.disable();
this.accessibilityManager?.disable();
TextLayerBuilder.#removeGlobalSelectionListener(this.div);
}
#bindMouse(end) {
const {
div
} = this;
div.addEventListener("mousedown", () => {
div.classList.add("selecting");
});
div.addEventListener("copy", event => {
if (!this.#enablePermissions) {
const selection = document.getSelection();
event.clipboardData.setData("text/plain", removeNullCharacters(normalizeUnicode(selection.toString())));
}
stopEvent(event);
});
TextLayerBuilder.#textLayers.set(div, end);
TextLayerBuilder.#enableGlobalSelectionListener();
}
static #removeGlobalSelectionListener(textLayerDiv) {
this.#textLayers.delete(textLayerDiv);
if (this.#textLayers.size === 0) {
this.#selectionChangeAbortController?.abort();
this.#selectionChangeAbortController = null;
}
}
static #enableGlobalSelectionListener() {
if (this.#selectionChangeAbortController) {
return;
}
this.#selectionChangeAbortController = new AbortController();
const {
signal
} = this.#selectionChangeAbortController;
const reset = (end, textLayer) => {
textLayer.classList.remove("selecting");
};
let isPointerDown = false;
document.addEventListener("pointerdown", () => {
isPointerDown = true;
}, {
signal
});
document.addEventListener("pointerup", () => {
isPointerDown = false;
this.#textLayers.forEach(reset);
}, {
signal
});
window.addEventListener("blur", () => {
isPointerDown = false;
this.#textLayers.forEach(reset);
}, {
signal
});
document.addEventListener("keyup", () => {
if (!isPointerDown) {
this.#textLayers.forEach(reset);
}
}, {
signal
});
document.addEventListener("selectionchange", () => {
const selection = document.getSelection();
if (selection.rangeCount === 0) {
this.#textLayers.forEach(reset);
return;
}
const activeTextLayers = new Set();
for (let i = 0; i < selection.rangeCount; i++) {
const range = selection.getRangeAt(i);
for (const textLayerDiv of this.#textLayers.keys()) {
if (!activeTextLayers.has(textLayerDiv) && range.intersectsNode(textLayerDiv)) {
activeTextLayers.add(textLayerDiv);
}
}
}
for (const [textLayerDiv, endDiv] of this.#textLayers) {
if (activeTextLayers.has(textLayerDiv)) {
textLayerDiv.classList.add("selecting");
} else {
reset(endDiv, textLayerDiv);
}
}
}, {
signal
});
}
}
;// ./web/pdf_page_view.js
const DEFAULT_LAYER_PROPERTIES = null;
const LAYERS_ORDER = new Map([["canvasWrapper", 0], ["textLayer", 1], ["annotationLayer", 2], ["annotationEditorLayer", 3], ["xfaLayer", 3]]);
class PDFPageView {
#annotationMode = AnnotationMode.ENABLE_FORMS;
#enableHWA = false;
#hasRestrictedScaling = false;
#isEditing = false;
#layerProperties = null;
#loadingId = null;
#previousRotation = null;
#scaleRoundX = 1;
#scaleRoundY = 1;
#renderError = null;
#renderingState = RenderingStates.INITIAL;
#textLayerMode = TextLayerMode.ENABLE;
#useThumbnailCanvas = {
directDrawing: true,
initialOptionalContent: true,
regularAnnotations: true
};
#viewportMap = new WeakMap();
#layers = [null, null, null, null];
constructor(options) {
const container = options.container;
const defaultViewport = options.defaultViewport;
this.id = options.id;
this.renderingId = "page" + this.id;
this.#layerProperties = options.layerProperties || DEFAULT_LAYER_PROPERTIES;
this.pdfPage = null;
this.pageLabel = null;
this.rotation = 0;
this.scale = options.scale || DEFAULT_SCALE;
this.viewport = defaultViewport;
this.pdfPageRotate = defaultViewport.rotation;
this._optionalContentConfigPromise = options.optionalContentConfigPromise || null;
this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE;
this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
this.imageResourcesPath = options.imageResourcesPath || "";
this.maxCanvasPixels = options.maxCanvasPixels ?? AppOptions.get("maxCanvasPixels");
this.pageColors = options.pageColors || null;
this.#enableHWA = options.enableHWA || false;
this.eventBus = options.eventBus;
this.renderingQueue = options.renderingQueue;
this.l10n = options.l10n;
this.renderTask = null;
this.resume = null;
this._annotationCanvasMap = null;
this.annotationLayer = null;
this.annotationEditorLayer = null;
this.textLayer = null;
this.zoomLayer = null;
this.xfaLayer = null;
this.structTreeLayer = null;
this.drawLayer = null;
const div = document.createElement("div");
div.className = "page";
div.setAttribute("data-page-number", this.id);
div.setAttribute("role", "region");
div.setAttribute("data-l10n-id", "pdfjs-page-landmark");
div.setAttribute("data-l10n-args", JSON.stringify({
page: this.id
}));
this.div = div;
this.#setDimensions();
container?.append(div);
}
#addLayer(div, name) {
const pos = LAYERS_ORDER.get(name);
const oldDiv = this.#layers[pos];
this.#layers[pos] = div;
if (oldDiv) {
oldDiv.replaceWith(div);
return;
}
for (let i = pos - 1; i >= 0; i--) {
const layer = this.#layers[i];
if (layer) {
layer.after(div);
return;
}
}
this.div.prepend(div);
}
get renderingState() {
return this.#renderingState;
}
set renderingState(state) {
if (state === this.#renderingState) {
return;
}
this.#renderingState = state;
if (this.#loadingId) {
clearTimeout(this.#loadingId);
this.#loadingId = null;
}
switch (state) {
case RenderingStates.PAUSED:
this.div.classList.remove("loading");
break;
case RenderingStates.RUNNING:
this.div.classList.add("loadingIcon");
this.#loadingId = setTimeout(() => {
this.div.classList.add("loading");
this.#loadingId = null;
}, 0);
break;
case RenderingStates.INITIAL:
case RenderingStates.FINISHED:
this.div.classList.remove("loadingIcon", "loading");
break;
}
}
#setDimensions() {
const {
viewport
} = this;
if (this.pdfPage) {
if (this.#previousRotation === viewport.rotation) {
return;
}
this.#previousRotation = viewport.rotation;
}
setLayerDimensions(this.div, viewport, true, false);
}
setPdfPage(pdfPage) {
this.pdfPage = pdfPage;
this.pdfPageRotate = pdfPage.rotate;
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = pdfPage.getViewport({
scale: this.scale * PixelsPerInch.PDF_TO_CSS_UNITS,
rotation: totalRotation
});
this.#setDimensions();
this.reset();
}
destroy() {
this.reset();
this.pdfPage?.cleanup();
}
hasEditableAnnotations() {
return !!this.annotationLayer?.hasEditableAnnotations();
}
get _textHighlighter() {
return shadow(this, "_textHighlighter", new TextHighlighter({
pageIndex: this.id - 1,
eventBus: this.eventBus,
findController: this.#layerProperties.findController
}));
}
#dispatchLayerRendered(name, error) {
this.eventBus.dispatch(name, {
source: this,
pageNumber: this.id,
error
});
}
async #renderAnnotationLayer() {
let error = null;
try {
await this.annotationLayer.render(this.viewport, {
structTreeLayer: this.structTreeLayer
}, "display");
} catch (ex) {
console.error(`#renderAnnotationLayer: "${ex}".`);
error = ex;
} finally {
this.#dispatchLayerRendered("annotationlayerrendered", error);
}
}
async #renderAnnotationEditorLayer() {
let error = null;
try {
await this.annotationEditorLayer.render(this.viewport, "display");
} catch (ex) {
console.error(`#renderAnnotationEditorLayer: "${ex}".`);
error = ex;
} finally {
this.#dispatchLayerRendered("annotationeditorlayerrendered", error);
}
}
async #renderDrawLayer() {
try {
await this.drawLayer.render("display");
} catch (ex) {
console.error(`#renderDrawLayer: "${ex}".`);
}
}
async #renderXfaLayer() {
let error = null;
try {
const result = await this.xfaLayer.render(this.viewport, "display");
if (result?.textDivs && this._textHighlighter) {
this.#buildXfaTextContentItems(result.textDivs);
}
} catch (ex) {
console.error(`#renderXfaLayer: "${ex}".`);
error = ex;
} finally {
if (this.xfaLayer?.div) {
this.l10n.pause();
this.#addLayer(this.xfaLayer.div, "xfaLayer");
this.l10n.resume();
}
this.#dispatchLayerRendered("xfalayerrendered", error);
}
}
async #renderTextLayer() {
if (!this.textLayer) {
return;
}
let error = null;
try {
await this.textLayer.render(this.viewport);
} catch (ex) {
if (ex instanceof AbortException) {
return;
}
console.error(`#renderTextLayer: "${ex}".`);
error = ex;
}
this.#dispatchLayerRendered("textlayerrendered", error);
this.#renderStructTreeLayer();
}
async #renderStructTreeLayer() {
if (!this.textLayer) {
return;
}
const treeDom = await this.structTreeLayer?.render();
if (treeDom) {
this.l10n.pause();
this.structTreeLayer?.addElementsToTextLayer();
if (this.canvas && treeDom.parentNode !== this.canvas) {
this.canvas.append(treeDom);
}
this.l10n.resume();
}
this.structTreeLayer?.show();
}
async #buildXfaTextContentItems(textDivs) {
const text = await this.pdfPage.getTextContent();
const items = [];
for (const item of text.items) {
items.push(item.str);
}
this._textHighlighter.setTextMapping(textDivs, items);
this._textHighlighter.enable();
}
_resetZoomLayer(removeFromDOM = false) {
if (!this.zoomLayer) {
return;
}
const zoomLayerCanvas = this.zoomLayer.firstChild;
this.#viewportMap.delete(zoomLayerCanvas);
zoomLayerCanvas.width = 0;
zoomLayerCanvas.height = 0;
if (removeFromDOM) {
this.zoomLayer.remove();
}
this.zoomLayer = null;
}
reset({
keepZoomLayer = false,
keepAnnotationLayer = false,
keepAnnotationEditorLayer = false,
keepXfaLayer = false,
keepTextLayer = false
} = {}) {
this.cancelRendering({
keepAnnotationLayer,
keepAnnotationEditorLayer,
keepXfaLayer,
keepTextLayer
});
this.renderingState = RenderingStates.INITIAL;
const div = this.div;
const childNodes = div.childNodes,
zoomLayerNode = keepZoomLayer && this.zoomLayer || null,
annotationLayerNode = keepAnnotationLayer && this.annotationLayer?.div || null,
annotationEditorLayerNode = keepAnnotationEditorLayer && this.annotationEditorLayer?.div || null,
xfaLayerNode = keepXfaLayer && this.xfaLayer?.div || null,
textLayerNode = keepTextLayer && this.textLayer?.div || null;
for (let i = childNodes.length - 1; i >= 0; i--) {
const node = childNodes[i];
switch (node) {
case zoomLayerNode:
case annotationLayerNode:
case annotationEditorLayerNode:
case xfaLayerNode:
case textLayerNode:
continue;
}
node.remove();
const layerIndex = this.#layers.indexOf(node);
if (layerIndex >= 0) {
this.#layers[layerIndex] = null;
}
}
div.removeAttribute("data-loaded");
if (annotationLayerNode) {
this.annotationLayer.hide();
}
if (annotationEditorLayerNode) {
this.annotationEditorLayer.hide();
}
if (xfaLayerNode) {
this.xfaLayer.hide();
}
if (textLayerNode) {
this.textLayer.hide();
}
this.structTreeLayer?.hide();
if (!zoomLayerNode) {
if (this.canvas) {
this.#viewportMap.delete(this.canvas);
this.canvas.width = 0;
this.canvas.height = 0;
delete this.canvas;
}
this._resetZoomLayer();
}
}
toggleEditingMode(isEditing) {
if (!this.hasEditableAnnotations()) {
return;
}
this.#isEditing = isEditing;
this.reset({
keepZoomLayer: true,
keepAnnotationLayer: true,
keepAnnotationEditorLayer: true,
keepXfaLayer: true,
keepTextLayer: true
});
}
update({
scale = 0,
rotation = null,
optionalContentConfigPromise = null,
drawingDelay = -1
}) {
this.scale = scale || this.scale;
if (typeof rotation === "number") {
this.rotation = rotation;
}
if (optionalContentConfigPromise instanceof Promise) {
this._optionalContentConfigPromise = optionalContentConfigPromise;
optionalContentConfigPromise.then(optionalContentConfig => {
if (optionalContentConfigPromise !== this._optionalContentConfigPromise) {
return;
}
this.#useThumbnailCanvas.initialOptionalContent = optionalContentConfig.hasInitialVisibility;
});
}
this.#useThumbnailCanvas.directDrawing = true;
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = this.viewport.clone({
scale: this.scale * PixelsPerInch.PDF_TO_CSS_UNITS,
rotation: totalRotation
});
this.#setDimensions();
if (this.canvas) {
let onlyCssZoom = false;
if (this.#hasRestrictedScaling) {
if (this.maxCanvasPixels > 0) {
const {
width,
height
} = this.viewport;
const {
sx,
sy
} = this.outputScale;
onlyCssZoom = (Math.floor(width) * sx | 0) * (Math.floor(height) * sy | 0) > this.maxCanvasPixels;
}
}
const postponeDrawing = drawingDelay >= 0 && drawingDelay < 1000;
if (postponeDrawing || onlyCssZoom) {
if (postponeDrawing && !onlyCssZoom && this.renderingState !== RenderingStates.FINISHED) {
this.cancelRendering({
keepZoomLayer: true,
keepAnnotationLayer: true,
keepAnnotationEditorLayer: true,
keepXfaLayer: true,
keepTextLayer: true,
cancelExtraDelay: drawingDelay
});
this.renderingState = RenderingStates.FINISHED;
this.#useThumbnailCanvas.directDrawing = false;
}
this.cssTransform({
target: this.canvas,
redrawAnnotationLayer: true,
redrawAnnotationEditorLayer: true,
redrawXfaLayer: true,
redrawTextLayer: !postponeDrawing,
hideTextLayer: postponeDrawing
});
if (postponeDrawing) {
return;
}
this.eventBus.dispatch("pagerendered", {
source: this,
pageNumber: this.id,
cssTransform: true,
timestamp: performance.now(),
error: this.#renderError
});
return;
}
if (!this.zoomLayer && !this.canvas.hidden) {
this.zoomLayer = this.canvas.parentNode;
this.zoomLayer.style.position = "absolute";
}
}
if (this.zoomLayer) {
this.cssTransform({
target: this.zoomLayer.firstChild
});
}
this.reset({
keepZoomLayer: true,
keepAnnotationLayer: true,
keepAnnotationEditorLayer: true,
keepXfaLayer: true,
keepTextLayer: true
});
}
cancelRendering({
keepAnnotationLayer = false,
keepAnnotationEditorLayer = false,
keepXfaLayer = false,
keepTextLayer = false,
cancelExtraDelay = 0
} = {}) {
if (this.renderTask) {
this.renderTask.cancel(cancelExtraDelay);
this.renderTask = null;
}
this.resume = null;
if (this.textLayer && (!keepTextLayer || !this.textLayer.div)) {
this.textLayer.cancel();
this.textLayer = null;
}
if (this.annotationLayer && (!keepAnnotationLayer || !this.annotationLayer.div)) {
this.annotationLayer.cancel();
this.annotationLayer = null;
this._annotationCanvasMap = null;
}
if (this.structTreeLayer && !this.textLayer) {
this.structTreeLayer = null;
}
if (this.annotationEditorLayer && (!keepAnnotationEditorLayer || !this.annotationEditorLayer.div)) {
if (this.drawLayer) {
this.drawLayer.cancel();
this.drawLayer = null;
}
this.annotationEditorLayer.cancel();
this.annotationEditorLayer = null;
}
if (this.xfaLayer && (!keepXfaLayer || !this.xfaLayer.div)) {
this.xfaLayer.cancel();
this.xfaLayer = null;
this._textHighlighter?.disable();
}
}
cssTransform({
target,
redrawAnnotationLayer = false,
redrawAnnotationEditorLayer = false,
redrawXfaLayer = false,
redrawTextLayer = false,
hideTextLayer = false
}) {
if (!target.hasAttribute("zooming")) {
target.setAttribute("zooming", true);
const {
style
} = target;
style.width = style.height = "";
}
const originalViewport = this.#viewportMap.get(target);
if (this.viewport !== originalViewport) {
const relativeRotation = this.viewport.rotation - originalViewport.rotation;
const absRotation = Math.abs(relativeRotation);
let scaleX = 1,
scaleY = 1;
if (absRotation === 90 || absRotation === 270) {
const {
width,
height
} = this.viewport;
scaleX = height / width;
scaleY = width / height;
}
target.style.transform = `rotate(${relativeRotation}deg) scale(${scaleX}, ${scaleY})`;
}
if (redrawAnnotationLayer && this.annotationLayer) {
this.#renderAnnotationLayer();
}
if (redrawAnnotationEditorLayer && this.annotationEditorLayer) {
if (this.drawLayer) {
this.#renderDrawLayer();
}
this.#renderAnnotationEditorLayer();
}
if (redrawXfaLayer && this.xfaLayer) {
this.#renderXfaLayer();
}
if (this.textLayer) {
if (hideTextLayer) {
this.textLayer.hide();
this.structTreeLayer?.hide();
} else if (redrawTextLayer) {
this.#renderTextLayer();
}
}
}
get width() {
return this.viewport.width;
}
get height() {
return this.viewport.height;
}
getPagePoint(x, y) {
return this.viewport.convertToPdfPoint(x, y);
}
async #finishRenderTask(renderTask, error = null) {
if (renderTask === this.renderTask) {
this.renderTask = null;
}
if (error instanceof RenderingCancelledException) {
this.#renderError = null;
return;
}
this.#renderError = error;
this.renderingState = RenderingStates.FINISHED;
this._resetZoomLayer(true);
this.#useThumbnailCanvas.regularAnnotations = !renderTask.separateAnnots;
this.eventBus.dispatch("pagerendered", {
source: this,
pageNumber: this.id,
cssTransform: false,
timestamp: performance.now(),
error: this.#renderError
});
if (error) {
throw error;
}
}
async draw() {
if (this.renderingState !== RenderingStates.INITIAL) {
console.error("Must be in new state before drawing");
this.reset();
}
const {
div,
l10n,
pageColors,
pdfPage,
viewport
} = this;
if (!pdfPage) {
this.renderingState = RenderingStates.FINISHED;
throw new Error("pdfPage is not loaded");
}
this.renderingState = RenderingStates.RUNNING;
const canvasWrapper = document.createElement("div");
canvasWrapper.classList.add("canvasWrapper");
this.#addLayer(canvasWrapper, "canvasWrapper");
if (!this.textLayer && this.#textLayerMode !== TextLayerMode.DISABLE && !pdfPage.isPureXfa) {
this._accessibilityManager ||= new TextAccessibilityManager();
this.textLayer = new TextLayerBuilder({
pdfPage,
highlighter: this._textHighlighter,
accessibilityManager: this._accessibilityManager,
enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS,
onAppend: textLayerDiv => {
this.l10n.pause();
this.#addLayer(textLayerDiv, "textLayer");
this.l10n.resume();
}
});
}
if (!this.annotationLayer && this.#annotationMode !== AnnotationMode.DISABLE) {
const {
annotationStorage,
annotationEditorUIManager,
downloadManager,
enableScripting,
fieldObjectsPromise,
hasJSActionsPromise,
linkService
} = this.#layerProperties;
this._annotationCanvasMap ||= new Map();
this.annotationLayer = new AnnotationLayerBuilder({
pdfPage,
annotationStorage,
imageResourcesPath: this.imageResourcesPath,
renderForms: this.#annotationMode === AnnotationMode.ENABLE_FORMS,
linkService,
downloadManager,
enableScripting,
hasJSActionsPromise,
fieldObjectsPromise,
annotationCanvasMap: this._annotationCanvasMap,
accessibilityManager: this._accessibilityManager,
annotationEditorUIManager,
onAppend: annotationLayerDiv => {
this.#addLayer(annotationLayerDiv, "annotationLayer");
}
});
}
const renderContinueCallback = cont => {
showCanvas?.(false);
if (this.renderingQueue && !this.renderingQueue.isHighestPriority(this)) {
this.renderingState = RenderingStates.PAUSED;
this.resume = () => {
this.renderingState = RenderingStates.RUNNING;
cont();
};
return;
}
cont();
};
const {
width,
height
} = viewport;
const canvas = document.createElement("canvas");
canvas.setAttribute("role", "presentation");
canvas.hidden = true;
const hasHCM = !!(pageColors?.background && pageColors?.foreground);
let showCanvas = isLastShow => {
if (!hasHCM || isLastShow) {
canvas.hidden = false;
showCanvas = null;
}
};
canvasWrapper.append(canvas);
this.canvas = canvas;
const ctx = canvas.getContext("2d", {
alpha: false,
willReadFrequently: !this.#enableHWA
});
const outputScale = this.outputScale = new OutputScale();
if (this.maxCanvasPixels > 0) {
const pixelsInViewport = width * height;
const maxScale = Math.sqrt(this.maxCanvasPixels / pixelsInViewport);
if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
outputScale.sx = maxScale;
outputScale.sy = maxScale;
this.#hasRestrictedScaling = true;
} else {
this.#hasRestrictedScaling = false;
}
}
const sfx = approximateFraction(outputScale.sx);
const sfy = approximateFraction(outputScale.sy);
const canvasWidth = canvas.width = floorToDivide(calcRound(width * outputScale.sx), sfx[0]);
const canvasHeight = canvas.height = floorToDivide(calcRound(height * outputScale.sy), sfy[0]);
const pageWidth = floorToDivide(calcRound(width), sfx[1]);
const pageHeight = floorToDivide(calcRound(height), sfy[1]);
outputScale.sx = canvasWidth / pageWidth;
outputScale.sy = canvasHeight / pageHeight;
if (this.#scaleRoundX !== sfx[1]) {
div.style.setProperty("--scale-round-x", `${sfx[1]}px`);
this.#scaleRoundX = sfx[1];
}
if (this.#scaleRoundY !== sfy[1]) {
div.style.setProperty("--scale-round-y", `${sfy[1]}px`);
this.#scaleRoundY = sfy[1];
}
this.#viewportMap.set(canvas, viewport);
const transform = outputScale.scaled ? [outputScale.sx, 0, 0, outputScale.sy, 0, 0] : null;
const renderContext = {
canvasContext: ctx,
transform,
viewport,
annotationMode: this.#annotationMode,
optionalContentConfigPromise: this._optionalContentConfigPromise,
annotationCanvasMap: this._annotationCanvasMap,
pageColors,
isEditing: this.#isEditing
};
const renderTask = this.renderTask = pdfPage.render(renderContext);
renderTask.onContinue = renderContinueCallback;
const resultPromise = renderTask.promise.then(async () => {
showCanvas?.(true);
await this.#finishRenderTask(renderTask);
this.structTreeLayer ||= new StructTreeLayerBuilder(pdfPage, viewport.rawDims);
this.#renderTextLayer();
if (this.annotationLayer) {
await this.#renderAnnotationLayer();
}
const {
annotationEditorUIManager
} = this.#layerProperties;
if (!annotationEditorUIManager) {
return;
}
this.drawLayer ||= new DrawLayerBuilder({
pageIndex: this.id
});
await this.#renderDrawLayer();
this.drawLayer.setParent(canvasWrapper);
this.annotationEditorLayer ||= new AnnotationEditorLayerBuilder({
uiManager: annotationEditorUIManager,
pdfPage,
l10n,
structTreeLayer: this.structTreeLayer,
accessibilityManager: this._accessibilityManager,
annotationLayer: this.annotationLayer?.annotationLayer,
textLayer: this.textLayer,
drawLayer: this.drawLayer.getDrawLayer(),
onAppend: annotationEditorLayerDiv => {
this.#addLayer(annotationEditorLayerDiv, "annotationEditorLayer");
}
});
this.#renderAnnotationEditorLayer();
}, error => {
if (!(error instanceof RenderingCancelledException)) {
showCanvas?.(true);
}
return this.#finishRenderTask(renderTask, error);
});
if (pdfPage.isPureXfa) {
if (!this.xfaLayer) {
const {
annotationStorage,
linkService
} = this.#layerProperties;
this.xfaLayer = new XfaLayerBuilder({
pdfPage,
annotationStorage,
linkService
});
}
this.#renderXfaLayer();
}
div.setAttribute("data-loaded", true);
this.eventBus.dispatch("pagerender", {
source: this,
pageNumber: this.id
});
return resultPromise;
}
setPageLabel(label) {
this.pageLabel = typeof label === "string" ? label : null;
this.div.setAttribute("data-l10n-args", JSON.stringify({
page: this.pageLabel ?? this.id
}));
if (this.pageLabel !== null) {
this.div.setAttribute("data-page-label", this.pageLabel);
} else {
this.div.removeAttribute("data-page-label");
}
}
get thumbnailCanvas() {
const {
directDrawing,
initialOptionalContent,
regularAnnotations
} = this.#useThumbnailCanvas;
return directDrawing && initialOptionalContent && regularAnnotations ? this.canvas : null;
}
}
;// ./web/pdf_viewer.js
const DEFAULT_CACHE_SIZE = 10;
const PagesCountLimit = {
FORCE_SCROLL_MODE_PAGE: 10000,
FORCE_LAZY_PAGE_INIT: 5000,
PAUSE_EAGER_PAGE_INIT: 250
};
function isValidAnnotationEditorMode(mode) {
return Object.values(AnnotationEditorType).includes(mode) && mode !== AnnotationEditorType.DISABLE;
}
class PDFPageViewBuffer {
#buf = new Set();
#size = 0;
constructor(size) {
this.#size = size;
}
push(view) {
const buf = this.#buf;
if (buf.has(view)) {
buf.delete(view);
}
buf.add(view);
if (buf.size > this.#size) {
this.#destroyFirstView();
}
}
resize(newSize, idsToKeep = null) {
this.#size = newSize;
const buf = this.#buf;
if (idsToKeep) {
const ii = buf.size;
let i = 1;
for (const view of buf) {
if (idsToKeep.has(view.id)) {
buf.delete(view);
buf.add(view);
}
if (++i > ii) {
break;
}
}
}
while (buf.size > this.#size) {
this.#destroyFirstView();
}
}
has(view) {
return this.#buf.has(view);
}
[Symbol.iterator]() {
return this.#buf.keys();
}
#destroyFirstView() {
const firstView = this.#buf.keys().next().value;
firstView?.destroy();
this.#buf.delete(firstView);
}
}
class PDFViewer {
#buffer = null;
#altTextManager = null;
#annotationEditorHighlightColors = null;
#annotationEditorMode = AnnotationEditorType.NONE;
#annotationEditorUIManager = null;
#annotationMode = AnnotationMode.ENABLE_FORMS;
#containerTopLeft = null;
#editorUndoBar = null;
#enableHWA = false;
#enableHighlightFloatingButton = false;
#enablePermissions = false;
#enableUpdatedAddImage = false;
#enableNewAltTextWhenAddingImage = false;
#eventAbortController = null;
#mlManager = null;
#switchAnnotationEditorModeAC = null;
#switchAnnotationEditorModeTimeoutId = null;
#getAllTextInProgress = false;
#hiddenCopyElement = null;
#interruptCopyCondition = false;
#previousContainerHeight = 0;
#resizeObserver = new ResizeObserver(this.#resizeObserverCallback.bind(this));
#scrollModePageState = null;
#scaleTimeoutId = null;
#textLayerMode = TextLayerMode.ENABLE;
constructor(options) {
const viewerVersion = "4.9.143";
if (version !== viewerVersion) {
throw new Error(`The API version "${version}" does not match the Viewer version "${viewerVersion}".`);
}
this.container = options.container;
this.viewer = options.viewer || options.container.firstElementChild;
this.#resizeObserver.observe(this.container);
this.eventBus = options.eventBus;
this.linkService = options.linkService || new SimpleLinkService();
this.downloadManager = options.downloadManager || null;
this.findController = options.findController || null;
this.#altTextManager = options.altTextManager || null;
this.#editorUndoBar = options.editorUndoBar || null;
if (this.findController) {
this.findController.onIsPageVisible = pageNumber => this._getVisiblePages().ids.has(pageNumber);
}
this._scriptingManager = options.scriptingManager || null;
this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE;
this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
this.#annotationEditorMode = options.annotationEditorMode ?? AnnotationEditorType.NONE;
this.#annotationEditorHighlightColors = options.annotationEditorHighlightColors || null;
this.#enableHighlightFloatingButton = options.enableHighlightFloatingButton === true;
this.#enableUpdatedAddImage = options.enableUpdatedAddImage === true;
this.#enableNewAltTextWhenAddingImage = options.enableNewAltTextWhenAddingImage === true;
this.imageResourcesPath = options.imageResourcesPath || "";
this.enablePrintAutoRotate = options.enablePrintAutoRotate || false;
this.maxCanvasPixels = options.maxCanvasPixels;
this.l10n = options.l10n;
this.#enablePermissions = options.enablePermissions || false;
this.pageColors = options.pageColors || null;
this.#mlManager = options.mlManager || null;
this.#enableHWA = options.enableHWA || false;
this.defaultRenderingQueue = !options.renderingQueue;
this.renderingQueue = options.renderingQueue;
const {
abortSignal
} = options;
abortSignal?.addEventListener("abort", () => {
this.#resizeObserver.disconnect();
this.#resizeObserver = null;
}, {
once: true
});
this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this), abortSignal);
this.presentationModeState = PresentationModeState.UNKNOWN;
this._resetView();
this.#updateContainerHeightCss();
this.eventBus._on("thumbnailrendered", ({
pageNumber,
pdfPage
}) => {
const pageView = this._pages[pageNumber - 1];
if (!this.#buffer.has(pageView)) {
pdfPage?.cleanup();
}
});
}
get pagesCount() {
return this._pages.length;
}
getPageView(index) {
return this._pages[index];
}
getCachedPageViews() {
return new Set(this.#buffer);
}
get pageViewsReady() {
return this._pages.every(pageView => pageView?.pdfPage);
}
get renderForms() {
return this.#annotationMode === AnnotationMode.ENABLE_FORMS;
}
get enableScripting() {
return !!this._scriptingManager;
}
get currentPageNumber() {
return this._currentPageNumber;
}
set currentPageNumber(val) {
if (!Number.isInteger(val)) {
throw new Error("Invalid page number.");
}
if (!this.pdfDocument) {
return;
}
if (!this._setCurrentPageNumber(val, true)) {
console.error(`currentPageNumber: "${val}" is not a valid page.`);
}
}
_setCurrentPageNumber(val, resetCurrentPageView = false) {
if (this._currentPageNumber === val) {
if (resetCurrentPageView) {
this.#resetCurrentPageView();
}
return true;
}
if (!(0 < val && val <= this.pagesCount)) {
return false;
}
const previous = this._currentPageNumber;
this._currentPageNumber = val;
this.eventBus.dispatch("pagechanging", {
source: this,
pageNumber: val,
pageLabel: this._pageLabels?.[val - 1] ?? null,
previous
});
if (resetCurrentPageView) {
this.#resetCurrentPageView();
}
return true;
}
get currentPageLabel() {
return this._pageLabels?.[this._currentPageNumber - 1] ?? null;
}
set currentPageLabel(val) {
if (!this.pdfDocument) {
return;
}
let page = val | 0;
if (this._pageLabels) {
const i = this._pageLabels.indexOf(val);
if (i >= 0) {
page = i + 1;
}
}
if (!this._setCurrentPageNumber(page, true)) {
console.error(`currentPageLabel: "${val}" is not a valid page.`);
}
}
get currentScale() {
return this._currentScale !== UNKNOWN_SCALE ? this._currentScale : DEFAULT_SCALE;
}
set currentScale(val) {
if (isNaN(val)) {
throw new Error("Invalid numeric scale.");
}
if (!this.pdfDocument) {
return;
}
this.#setScale(val, {
noScroll: false
});
}
get currentScaleValue() {
return this._currentScaleValue;
}
set currentScaleValue(val) {
if (!this.pdfDocument) {
return;
}
this.#setScale(val, {
noScroll: false
});
}
get pagesRotation() {
return this._pagesRotation;
}
set pagesRotation(rotation) {
if (!isValidRotation(rotation)) {
throw new Error("Invalid pages rotation angle.");
}
if (!this.pdfDocument) {
return;
}
rotation %= 360;
if (rotation < 0) {
rotation += 360;
}
if (this._pagesRotation === rotation) {
return;
}
this._pagesRotation = rotation;
const pageNumber = this._currentPageNumber;
this.refresh(true, {
rotation
});
if (this._currentScaleValue) {
this.#setScale(this._currentScaleValue, {
noScroll: true
});
}
this.eventBus.dispatch("rotationchanging", {
source: this,
pagesRotation: rotation,
pageNumber
});
if (this.defaultRenderingQueue) {
this.update();
}
}
get firstPagePromise() {
return this.pdfDocument ? this._firstPageCapability.promise : null;
}
get onePageRendered() {
return this.pdfDocument ? this._onePageRenderedCapability.promise : null;
}
get pagesPromise() {
return this.pdfDocument ? this._pagesCapability.promise : null;
}
get _layerProperties() {
const self = this;
return shadow(this, "_layerProperties", {
get annotationEditorUIManager() {
return self.#annotationEditorUIManager;
},
get annotationStorage() {
return self.pdfDocument?.annotationStorage;
},
get downloadManager() {
return self.downloadManager;
},
get enableScripting() {
return !!self._scriptingManager;
},
get fieldObjectsPromise() {
return self.pdfDocument?.getFieldObjects();
},
get findController() {
return self.findController;
},
get hasJSActionsPromise() {
return self.pdfDocument?.hasJSActions();
},
get linkService() {
return self.linkService;
}
});
}
#initializePermissions(permissions) {
const params = {
annotationEditorMode: this.#annotationEditorMode,
annotationMode: this.#annotationMode,
textLayerMode: this.#textLayerMode
};
if (!permissions) {
return params;
}
if (!permissions.includes(PermissionFlag.COPY) && this.#textLayerMode === TextLayerMode.ENABLE) {
params.textLayerMode = TextLayerMode.ENABLE_PERMISSIONS;
}
if (!permissions.includes(PermissionFlag.MODIFY_CONTENTS)) {
params.annotationEditorMode = AnnotationEditorType.DISABLE;
}
if (!permissions.includes(PermissionFlag.MODIFY_ANNOTATIONS) && !permissions.includes(PermissionFlag.FILL_INTERACTIVE_FORMS) && this.#annotationMode === AnnotationMode.ENABLE_FORMS) {
params.annotationMode = AnnotationMode.ENABLE;
}
return params;
}
async #onePageRenderedOrForceFetch(signal) {
if (document.visibilityState === "hidden" || !this.container.offsetParent || this._getVisiblePages().views.length === 0) {
return;
}
const hiddenCapability = Promise.withResolvers(),
ac = new AbortController();
document.addEventListener("visibilitychange", () => {
if (document.visibilityState === "hidden") {
hiddenCapability.resolve();
}
}, {
signal: AbortSignal.any([signal, ac.signal])
});
await Promise.race([this._onePageRenderedCapability.promise, hiddenCapability.promise]);
ac.abort();
}
async getAllText() {
const texts = [];
const buffer = [];
for (let pageNum = 1, pagesCount = this.pdfDocument.numPages; pageNum <= pagesCount; ++pageNum) {
if (this.#interruptCopyCondition) {
return null;
}
buffer.length = 0;
const page = await this.pdfDocument.getPage(pageNum);
const {
items
} = await page.getTextContent();
for (const item of items) {
if (item.str) {
buffer.push(item.str);
}
if (item.hasEOL) {
buffer.push("\n");
}
}
texts.push(removeNullCharacters(buffer.join("")));
}
return texts.join("\n");
}
#copyCallback(textLayerMode, event) {
const selection = document.getSelection();
const {
focusNode,
anchorNode
} = selection;
if (anchorNode && focusNode && selection.containsNode(this.#hiddenCopyElement)) {
if (this.#getAllTextInProgress || textLayerMode === TextLayerMode.ENABLE_PERMISSIONS) {
stopEvent(event);
return;
}
this.#getAllTextInProgress = true;
const {
classList
} = this.viewer;
classList.add("copyAll");
const ac = new AbortController();
window.addEventListener("keydown", ev => this.#interruptCopyCondition = ev.key === "Escape", {
signal: ac.signal
});
this.getAllText().then(async text => {
if (text !== null) {
await navigator.clipboard.writeText(text);
}
}).catch(reason => {
console.warn(`Something goes wrong when extracting the text: ${reason.message}`);
}).finally(() => {
this.#getAllTextInProgress = false;
this.#interruptCopyCondition = false;
ac.abort();
classList.remove("copyAll");
});
stopEvent(event);
}
}
setDocument(pdfDocument) {
if (this.pdfDocument) {
this.eventBus.dispatch("pagesdestroy", {
source: this
});
this._cancelRendering();
this._resetView();
this.findController?.setDocument(null);
this._scriptingManager?.setDocument(null);
this.#annotationEditorUIManager?.destroy();
this.#annotationEditorUIManager = null;
}
this.pdfDocument = pdfDocument;
if (!pdfDocument) {
return;
}
const pagesCount = pdfDocument.numPages;
const firstPagePromise = pdfDocument.getPage(1);
const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
intent: "display"
});
const permissionsPromise = this.#enablePermissions ? pdfDocument.getPermissions() : Promise.resolve();
const {
eventBus,
pageColors,
viewer
} = this;
this.#eventAbortController = new AbortController();
const {
signal
} = this.#eventAbortController;
if (pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE) {
console.warn("Forcing PAGE-scrolling for performance reasons, given the length of the document.");
const mode = this._scrollMode = ScrollMode.PAGE;
eventBus.dispatch("scrollmodechanged", {
source: this,
mode
});
}
this._pagesCapability.promise.then(() => {
eventBus.dispatch("pagesloaded", {
source: this,
pagesCount
});
}, () => {});
const onBeforeDraw = evt => {
const pageView = this._pages[evt.pageNumber - 1];
if (!pageView) {
return;
}
this.#buffer.push(pageView);
};
eventBus._on("pagerender", onBeforeDraw, {
signal
});
const onAfterDraw = evt => {
if (evt.cssTransform) {
return;
}
this._onePageRenderedCapability.resolve({
timestamp: evt.timestamp
});
eventBus._off("pagerendered", onAfterDraw);
};
eventBus._on("pagerendered", onAfterDraw, {
signal
});
Promise.all([firstPagePromise, permissionsPromise]).then(([firstPdfPage, permissions]) => {
if (pdfDocument !== this.pdfDocument) {
return;
}
this._firstPageCapability.resolve(firstPdfPage);
this._optionalContentConfigPromise = optionalContentConfigPromise;
const {
annotationEditorMode,
annotationMode,
textLayerMode
} = this.#initializePermissions(permissions);
if (textLayerMode !== TextLayerMode.DISABLE) {
const element = this.#hiddenCopyElement = document.createElement("div");
element.id = "hiddenCopyElement";
viewer.before(element);
}
if (annotationEditorMode !== AnnotationEditorType.DISABLE) {
const mode = annotationEditorMode;
if (pdfDocument.isPureXfa) {
console.warn("Warning: XFA-editing is not implemented.");
} else if (isValidAnnotationEditorMode(mode)) {
this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, viewer, this.#altTextManager, eventBus, pdfDocument, pageColors, this.#annotationEditorHighlightColors, this.#enableHighlightFloatingButton, this.#enableUpdatedAddImage, this.#enableNewAltTextWhenAddingImage, this.#mlManager, this.#editorUndoBar);
eventBus.dispatch("annotationeditoruimanager", {
source: this,
uiManager: this.#annotationEditorUIManager
});
if (mode !== AnnotationEditorType.NONE) {
if (mode === AnnotationEditorType.STAMP) {
this.#mlManager?.loadModel("altText");
}
this.#annotationEditorUIManager.updateMode(mode);
}
} else {
console.error(`Invalid AnnotationEditor mode: ${mode}`);
}
}
const viewerElement = this._scrollMode === ScrollMode.PAGE ? null : viewer;
const scale = this.currentScale;
const viewport = firstPdfPage.getViewport({
scale: scale * PixelsPerInch.PDF_TO_CSS_UNITS
});
viewer.style.setProperty("--scale-factor", viewport.scale);
if (pageColors?.background) {
viewer.style.setProperty("--page-bg-color", pageColors.background);
}
if (pageColors?.foreground === "CanvasText" || pageColors?.background === "Canvas") {
viewer.style.setProperty("--hcm-highlight-filter", pdfDocument.filterFactory.addHighlightHCMFilter("highlight", "CanvasText", "Canvas", "HighlightText", "Highlight"));
viewer.style.setProperty("--hcm-highlight-selected-filter", pdfDocument.filterFactory.addHighlightHCMFilter("highlight_selected", "CanvasText", "Canvas", "HighlightText", "ButtonText"));
}
for (let pageNum = 1; pageNum <= pagesCount; ++pageNum) {
const pageView = new PDFPageView({
container: viewerElement,
eventBus,
id: pageNum,
scale,
defaultViewport: viewport.clone(),
optionalContentConfigPromise,
renderingQueue: this.renderingQueue,
textLayerMode,
annotationMode,
imageResourcesPath: this.imageResourcesPath,
maxCanvasPixels: this.maxCanvasPixels,
pageColors,
l10n: this.l10n,
layerProperties: this._layerProperties,
enableHWA: this.#enableHWA
});
this._pages.push(pageView);
}
this._pages[0]?.setPdfPage(firstPdfPage);
if (this._scrollMode === ScrollMode.PAGE) {
this.#ensurePageViewVisible();
} else if (this._spreadMode !== SpreadMode.NONE) {
this._updateSpreadMode();
}
this.#onePageRenderedOrForceFetch(signal).then(async () => {
if (pdfDocument !== this.pdfDocument) {
return;
}
this.findController?.setDocument(pdfDocument);
this._scriptingManager?.setDocument(pdfDocument);
if (this.#hiddenCopyElement) {
document.addEventListener("copy", this.#copyCallback.bind(this, textLayerMode), {
signal
});
}
if (this.#annotationEditorUIManager) {
eventBus.dispatch("annotationeditormodechanged", {
source: this,
mode: this.#annotationEditorMode
});
}
if (pdfDocument.loadingParams.disableAutoFetch || pagesCount > PagesCountLimit.FORCE_LAZY_PAGE_INIT) {
this._pagesCapability.resolve();
return;
}
let getPagesLeft = pagesCount - 1;
if (getPagesLeft <= 0) {
this._pagesCapability.resolve();
return;
}
for (let pageNum = 2; pageNum <= pagesCount; ++pageNum) {
const promise = pdfDocument.getPage(pageNum).then(pdfPage => {
const pageView = this._pages[pageNum - 1];
if (!pageView.pdfPage) {
pageView.setPdfPage(pdfPage);
}
if (--getPagesLeft === 0) {
this._pagesCapability.resolve();
}
}, reason => {
console.error(`Unable to get page ${pageNum} to initialize viewer`, reason);
if (--getPagesLeft === 0) {
this._pagesCapability.resolve();
}
});
if (pageNum % PagesCountLimit.PAUSE_EAGER_PAGE_INIT === 0) {
await promise;
}
}
});
eventBus.dispatch("pagesinit", {
source: this
});
pdfDocument.getMetadata().then(({
info
}) => {
if (pdfDocument !== this.pdfDocument) {
return;
}
if (info.Language) {
viewer.lang = info.Language;
}
});
if (this.defaultRenderingQueue) {
this.update();
}
}).catch(reason => {
console.error("Unable to initialize viewer", reason);
this._pagesCapability.reject(reason);
});
}
setPageLabels(labels) {
if (!this.pdfDocument) {
return;
}
if (!labels) {
this._pageLabels = null;
} else if (!(Array.isArray(labels) && this.pdfDocument.numPages === labels.length)) {
this._pageLabels = null;
console.error(`setPageLabels: Invalid page labels.`);
} else {
this._pageLabels = labels;
}
for (let i = 0, ii = this._pages.length; i < ii; i++) {
this._pages[i].setPageLabel(this._pageLabels?.[i] ?? null);
}
}
_resetView() {
this._pages = [];
this._currentPageNumber = 1;
this._currentScale = UNKNOWN_SCALE;
this._currentScaleValue = null;
this._pageLabels = null;
this.#buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE);
this._location = null;
this._pagesRotation = 0;
this._optionalContentConfigPromise = null;
this._firstPageCapability = Promise.withResolvers();
this._onePageRenderedCapability = Promise.withResolvers();
this._pagesCapability = Promise.withResolvers();
this._scrollMode = ScrollMode.VERTICAL;
this._previousScrollMode = ScrollMode.UNKNOWN;
this._spreadMode = SpreadMode.NONE;
this.#scrollModePageState = {
previousPageNumber: 1,
scrollDown: true,
pages: []
};
this.#eventAbortController?.abort();
this.#eventAbortController = null;
this.viewer.textContent = "";
this._updateScrollMode();
this.viewer.removeAttribute("lang");
this.#hiddenCopyElement?.remove();
this.#hiddenCopyElement = null;
this.#cleanupSwitchAnnotationEditorMode();
}
#ensurePageViewVisible() {
if (this._scrollMode !== ScrollMode.PAGE) {
throw new Error("#ensurePageViewVisible: Invalid scrollMode value.");
}
const pageNumber = this._currentPageNumber,
state = this.#scrollModePageState,
viewer = this.viewer;
viewer.textContent = "";
state.pages.length = 0;
if (this._spreadMode === SpreadMode.NONE && !this.isInPresentationMode) {
const pageView = this._pages[pageNumber - 1];
viewer.append(pageView.div);
state.pages.push(pageView);
} else {
const pageIndexSet = new Set(),
parity = this._spreadMode - 1;
if (parity === -1) {
pageIndexSet.add(pageNumber - 1);
} else if (pageNumber % 2 !== parity) {
pageIndexSet.add(pageNumber - 1);
pageIndexSet.add(pageNumber);
} else {
pageIndexSet.add(pageNumber - 2);
pageIndexSet.add(pageNumber - 1);
}
const spread = document.createElement("div");
spread.className = "spread";
if (this.isInPresentationMode) {
const dummyPage = document.createElement("div");
dummyPage.className = "dummyPage";
spread.append(dummyPage);
}
for (const i of pageIndexSet) {
const pageView = this._pages[i];
if (!pageView) {
continue;
}
spread.append(pageView.div);
state.pages.push(pageView);
}
viewer.append(spread);
}
state.scrollDown = pageNumber >= state.previousPageNumber;
state.previousPageNumber = pageNumber;
}
_scrollUpdate() {
if (this.pagesCount === 0) {
return;
}
this.update();
}
#scrollIntoView(pageView, pageSpot = null) {
const {
div,
id
} = pageView;
if (this._currentPageNumber !== id) {
this._setCurrentPageNumber(id);
}
if (this._scrollMode === ScrollMode.PAGE) {
this.#ensurePageViewVisible();
this.update();
}
if (!pageSpot && !this.isInPresentationMode) {
const left = div.offsetLeft + div.clientLeft,
right = left + div.clientWidth;
const {
scrollLeft,
clientWidth
} = this.container;
if (this._scrollMode === ScrollMode.HORIZONTAL || left < scrollLeft || right > scrollLeft + clientWidth) {
pageSpot = {
left: 0,
top: 0
};
}
}
scrollIntoView(div, pageSpot);
if (!this._currentScaleValue && this._location) {
this._location = null;
}
}
#isSameScale(newScale) {
return newScale === this._currentScale || Math.abs(newScale - this._currentScale) < 1e-15;
}
#setScaleUpdatePages(newScale, newValue, {
noScroll = false,
preset = false,
drawingDelay = -1,
origin = null
}) {
this._currentScaleValue = newValue.toString();
if (this.#isSameScale(newScale)) {
if (preset) {
this.eventBus.dispatch("scalechanging", {
source: this,
scale: newScale,
presetValue: newValue
});
}
return;
}
this.viewer.style.setProperty("--scale-factor", newScale * PixelsPerInch.PDF_TO_CSS_UNITS);
const postponeDrawing = drawingDelay >= 0 && drawingDelay < 1000;
this.refresh(true, {
scale: newScale,
drawingDelay: postponeDrawing ? drawingDelay : -1
});
if (postponeDrawing) {
this.#scaleTimeoutId = setTimeout(() => {
this.#scaleTimeoutId = null;
this.refresh();
}, drawingDelay);
}
const previousScale = this._currentScale;
this._currentScale = newScale;
if (!noScroll) {
let page = this._currentPageNumber,
dest;
if (this._location && !(this.isInPresentationMode || this.isChangingPresentationMode)) {
page = this._location.pageNumber;
dest = [null, {
name: "XYZ"
}, this._location.left, this._location.top, null];
}
this.scrollPageIntoView({
pageNumber: page,
destArray: dest,
allowNegativeOffset: true
});
if (Array.isArray(origin)) {
const scaleDiff = newScale / previousScale - 1;
const [top, left] = this.containerTopLeft;
this.container.scrollLeft += (origin[0] - left) * scaleDiff;
this.container.scrollTop += (origin[1] - top) * scaleDiff;
}
}
this.eventBus.dispatch("scalechanging", {
source: this,
scale: newScale,
presetValue: preset ? newValue : undefined
});
if (this.defaultRenderingQueue) {
this.update();
}
}
get #pageWidthScaleFactor() {
if (this._spreadMode !== SpreadMode.NONE && this._scrollMode !== ScrollMode.HORIZONTAL) {
return 2;
}
return 1;
}
#setScale(value, options) {
let scale = parseFloat(value);
if (scale > 0) {
options.preset = false;
this.#setScaleUpdatePages(scale, value, options);
} else {
const currentPage = this._pages[this._currentPageNumber - 1];
if (!currentPage) {
return;
}
let hPadding = SCROLLBAR_PADDING,
vPadding = VERTICAL_PADDING;
if (this.isInPresentationMode) {
hPadding = vPadding = 4;
if (this._spreadMode !== SpreadMode.NONE) {
hPadding *= 2;
}
} else if (this._scrollMode === ScrollMode.HORIZONTAL) {
[hPadding, vPadding] = [vPadding, hPadding];
}
const pageWidthScale = (this.container.clientWidth - hPadding) / currentPage.width * currentPage.scale / this.#pageWidthScaleFactor;
const pageHeightScale = (this.container.clientHeight - vPadding) / currentPage.height * currentPage.scale;
switch (value) {
case "page-actual":
scale = 1;
break;
case "page-width":
scale = pageWidthScale;
break;
case "page-height":
scale = pageHeightScale;
break;
case "page-fit":
scale = Math.min(pageWidthScale, pageHeightScale);
break;
case "auto":
const horizontalScale = isPortraitOrientation(currentPage) ? pageWidthScale : Math.min(pageHeightScale, pageWidthScale);
scale = Math.min(MAX_AUTO_SCALE, horizontalScale);
break;
default:
console.error(`#setScale: "${value}" is an unknown zoom value.`);
return;
}
options.preset = true;
this.#setScaleUpdatePages(scale, value, options);
}
}
#resetCurrentPageView() {
const pageView = this._pages[this._currentPageNumber - 1];
if (this.isInPresentationMode) {
this.#setScale(this._currentScaleValue, {
noScroll: true
});
}
this.#scrollIntoView(pageView);
}
pageLabelToPageNumber(label) {
if (!this._pageLabels) {
return null;
}
const i = this._pageLabels.indexOf(label);
if (i < 0) {
return null;
}
return i + 1;
}
scrollPageIntoView({
pageNumber,
destArray = null,
allowNegativeOffset = false,
ignoreDestinationZoom = false
}) {
if (!this.pdfDocument) {
return;
}
const pageView = Number.isInteger(pageNumber) && this._pages[pageNumber - 1];
if (!pageView) {
console.error(`scrollPageIntoView: "${pageNumber}" is not a valid pageNumber parameter.`);
return;
}
if (this.isInPresentationMode || !destArray) {
this._setCurrentPageNumber(pageNumber, true);
return;
}
let x = 0,
y = 0;
let width = 0,
height = 0,
widthScale,
heightScale;
const changeOrientation = pageView.rotation % 180 !== 0;
const pageWidth = (changeOrientation ? pageView.height : pageView.width) / pageView.scale / PixelsPerInch.PDF_TO_CSS_UNITS;
const pageHeight = (changeOrientation ? pageView.width : pageView.height) / pageView.scale / PixelsPerInch.PDF_TO_CSS_UNITS;
let scale = 0;
switch (destArray[1].name) {
case "XYZ":
x = destArray[2];
y = destArray[3];
scale = destArray[4];
x = x !== null ? x : 0;
y = y !== null ? y : pageHeight;
break;
case "Fit":
case "FitB":
scale = "page-fit";
break;
case "FitH":
case "FitBH":
y = destArray[2];
scale = "page-width";
if (y === null && this._location) {
x = this._location.left;
y = this._location.top;
} else if (typeof y !== "number" || y < 0) {
y = pageHeight;
}
break;
case "FitV":
case "FitBV":
x = destArray[2];
width = pageWidth;
height = pageHeight;
scale = "page-height";
break;
case "FitR":
x = destArray[2];
y = destArray[3];
width = destArray[4] - x;
height = destArray[5] - y;
let hPadding = SCROLLBAR_PADDING,
vPadding = VERTICAL_PADDING;
widthScale = (this.container.clientWidth - hPadding) / width / PixelsPerInch.PDF_TO_CSS_UNITS;
heightScale = (this.container.clientHeight - vPadding) / height / PixelsPerInch.PDF_TO_CSS_UNITS;
scale = Math.min(Math.abs(widthScale), Math.abs(heightScale));
break;
default:
console.error(`scrollPageIntoView: "${destArray[1].name}" is not a valid destination type.`);
return;
}
if (!ignoreDestinationZoom) {
if (scale && scale !== this._currentScale) {
this.currentScaleValue = scale;
} else if (this._currentScale === UNKNOWN_SCALE) {
this.currentScaleValue = DEFAULT_SCALE_VALUE;
}
}
if (scale === "page-fit" && !destArray[4]) {
this.#scrollIntoView(pageView);
return;
}
const boundingRect = [pageView.viewport.convertToViewportPoint(x, y), pageView.viewport.convertToViewportPoint(x + width, y + height)];
let left = Math.min(boundingRect[0][0], boundingRect[1][0]);
let top = Math.min(boundingRect[0][1], boundingRect[1][1]);
if (!allowNegativeOffset) {
left = Math.max(left, 0);
top = Math.max(top, 0);
}
this.#scrollIntoView(pageView, {
left,
top
});
}
_updateLocation(firstPage) {
const currentScale = this._currentScale;
const currentScaleValue = this._currentScaleValue;
const normalizedScaleValue = parseFloat(currentScaleValue) === currentScale ? Math.round(currentScale * 10000) / 100 : currentScaleValue;
const pageNumber = firstPage.id;
const currentPageView = this._pages[pageNumber - 1];
const container = this.container;
const topLeft = currentPageView.getPagePoint(container.scrollLeft - firstPage.x, container.scrollTop - firstPage.y);
const intLeft = Math.round(topLeft[0]);
const intTop = Math.round(topLeft[1]);
let pdfOpenParams = `#page=${pageNumber}`;
if (!this.isInPresentationMode) {
pdfOpenParams += `&zoom=${normalizedScaleValue},${intLeft},${intTop}`;
}
this._location = {
pageNumber,
scale: normalizedScaleValue,
top: intTop,
left: intLeft,
rotation: this._pagesRotation,
pdfOpenParams
};
}
update() {
const visible = this._getVisiblePages();
const visiblePages = visible.views,
numVisiblePages = visiblePages.length;
if (numVisiblePages === 0) {
return;
}
const newCacheSize = Math.max(DEFAULT_CACHE_SIZE, 2 * numVisiblePages + 1);
this.#buffer.resize(newCacheSize, visible.ids);
this.renderingQueue.renderHighestPriority(visible);
const isSimpleLayout = this._spreadMode === SpreadMode.NONE && (this._scrollMode === ScrollMode.PAGE || this._scrollMode === ScrollMode.VERTICAL);
const currentId = this._currentPageNumber;
let stillFullyVisible = false;
for (const page of visiblePages) {
if (page.percent < 100) {
break;
}
if (page.id === currentId && isSimpleLayout) {
stillFullyVisible = true;
break;
}
}
this._setCurrentPageNumber(stillFullyVisible ? currentId : visiblePages[0].id);
this._updateLocation(visible.first);
this.eventBus.dispatch("updateviewarea", {
source: this,
location: this._location
});
}
#switchToEditAnnotationMode() {
const visible = this._getVisiblePages();
const pagesToRefresh = [];
const {
ids,
views
} = visible;
for (const page of views) {
const {
view
} = page;
if (!view.hasEditableAnnotations()) {
ids.delete(view.id);
continue;
}
pagesToRefresh.push(page);
}
if (pagesToRefresh.length === 0) {
return null;
}
this.renderingQueue.renderHighestPriority({
first: pagesToRefresh[0],
last: pagesToRefresh.at(-1),
views: pagesToRefresh,
ids
});
return ids;
}
containsElement(element) {
return this.container.contains(element);
}
focus() {
this.container.focus();
}
get _isContainerRtl() {
return getComputedStyle(this.container).direction === "rtl";
}
get isInPresentationMode() {
return this.presentationModeState === PresentationModeState.FULLSCREEN;
}
get isChangingPresentationMode() {
return this.presentationModeState === PresentationModeState.CHANGING;
}
get isHorizontalScrollbarEnabled() {
return this.isInPresentationMode ? false : this.container.scrollWidth > this.container.clientWidth;
}
get isVerticalScrollbarEnabled() {
return this.isInPresentationMode ? false : this.container.scrollHeight > this.container.clientHeight;
}
_getVisiblePages() {
const views = this._scrollMode === ScrollMode.PAGE ? this.#scrollModePageState.pages : this._pages,
horizontal = this._scrollMode === ScrollMode.HORIZONTAL,
rtl = horizontal && this._isContainerRtl;
return getVisibleElements({
scrollEl: this.container,
views,
sortByVisibility: true,
horizontal,
rtl
});
}
cleanup() {
for (const pageView of this._pages) {
if (pageView.renderingState !== RenderingStates.FINISHED) {
pageView.reset();
}
}
}
_cancelRendering() {
for (const pageView of this._pages) {
pageView.cancelRendering();
}
}
async #ensurePdfPageLoaded(pageView) {
if (pageView.pdfPage) {
return pageView.pdfPage;
}
try {
const pdfPage = await this.pdfDocument.getPage(pageView.id);
if (!pageView.pdfPage) {
pageView.setPdfPage(pdfPage);
}
return pdfPage;
} catch (reason) {
console.error("Unable to get page for page view", reason);
return null;
}
}
#getScrollAhead(visible) {
if (visible.first?.id === 1) {
return true;
} else if (visible.last?.id === this.pagesCount) {
return false;
}
switch (this._scrollMode) {
case ScrollMode.PAGE:
return this.#scrollModePageState.scrollDown;
case ScrollMode.HORIZONTAL:
return this.scroll.right;
}
return this.scroll.down;
}
forceRendering(currentlyVisiblePages) {
const visiblePages = currentlyVisiblePages || this._getVisiblePages();
const scrollAhead = this.#getScrollAhead(visiblePages);
const preRenderExtra = this._spreadMode !== SpreadMode.NONE && this._scrollMode !== ScrollMode.HORIZONTAL;
const pageView = this.renderingQueue.getHighestPriority(visiblePages, this._pages, scrollAhead, preRenderExtra);
if (pageView) {
this.#ensurePdfPageLoaded(pageView).then(() => {
this.renderingQueue.renderView(pageView);
});
return true;
}
return false;
}
get hasEqualPageSizes() {
const firstPageView = this._pages[0];
for (let i = 1, ii = this._pages.length; i < ii; ++i) {
const pageView = this._pages[i];
if (pageView.width !== firstPageView.width || pageView.height !== firstPageView.height) {
return false;
}
}
return true;
}
getPagesOverview() {
let initialOrientation;
return this._pages.map(pageView => {
const viewport = pageView.pdfPage.getViewport({
scale: 1
});
const orientation = isPortraitOrientation(viewport);
if (initialOrientation === undefined) {
initialOrientation = orientation;
} else if (this.enablePrintAutoRotate && orientation !== initialOrientation) {
return {
width: viewport.height,
height: viewport.width,
rotation: (viewport.rotation - 90) % 360
};
}
return {
width: viewport.width,
height: viewport.height,
rotation: viewport.rotation
};
});
}
get optionalContentConfigPromise() {
if (!this.pdfDocument) {
return Promise.resolve(null);
}
if (!this._optionalContentConfigPromise) {
console.error("optionalContentConfigPromise: Not initialized yet.");
return this.pdfDocument.getOptionalContentConfig({
intent: "display"
});
}
return this._optionalContentConfigPromise;
}
set optionalContentConfigPromise(promise) {
if (!(promise instanceof Promise)) {
throw new Error(`Invalid optionalContentConfigPromise: ${promise}`);
}
if (!this.pdfDocument) {
return;
}
if (!this._optionalContentConfigPromise) {
return;
}
this._optionalContentConfigPromise = promise;
this.refresh(false, {
optionalContentConfigPromise: promise
});
this.eventBus.dispatch("optionalcontentconfigchanged", {
source: this,
promise
});
}
get scrollMode() {
return this._scrollMode;
}
set scrollMode(mode) {
if (this._scrollMode === mode) {
return;
}
if (!isValidScrollMode(mode)) {
throw new Error(`Invalid scroll mode: ${mode}`);
}
if (this.pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE) {
return;
}
this._previousScrollMode = this._scrollMode;
this._scrollMode = mode;
this.eventBus.dispatch("scrollmodechanged", {
source: this,
mode
});
this._updateScrollMode(this._currentPageNumber);
}
_updateScrollMode(pageNumber = null) {
const scrollMode = this._scrollMode,
viewer = this.viewer;
viewer.classList.toggle("scrollHorizontal", scrollMode === ScrollMode.HORIZONTAL);
viewer.classList.toggle("scrollWrapped", scrollMode === ScrollMode.WRAPPED);
if (!this.pdfDocument || !pageNumber) {
return;
}
if (scrollMode === ScrollMode.PAGE) {
this.#ensurePageViewVisible();
} else if (this._previousScrollMode === ScrollMode.PAGE) {
this._updateSpreadMode();
}
if (this._currentScaleValue && isNaN(this._currentScaleValue)) {
this.#setScale(this._currentScaleValue, {
noScroll: true
});
}
this._setCurrentPageNumber(pageNumber, true);
this.update();
}
get spreadMode() {
return this._spreadMode;
}
set spreadMode(mode) {
if (this._spreadMode === mode) {
return;
}
if (!isValidSpreadMode(mode)) {
throw new Error(`Invalid spread mode: ${mode}`);
}
this._spreadMode = mode;
this.eventBus.dispatch("spreadmodechanged", {
source: this,
mode
});
this._updateSpreadMode(this._currentPageNumber);
}
_updateSpreadMode(pageNumber = null) {
if (!this.pdfDocument) {
return;
}
const viewer = this.viewer,
pages = this._pages;
if (this._scrollMode === ScrollMode.PAGE) {
this.#ensurePageViewVisible();
} else {
viewer.textContent = "";
if (this._spreadMode === SpreadMode.NONE) {
for (const pageView of this._pages) {
viewer.append(pageView.div);
}
} else {
const parity = this._spreadMode - 1;
let spread = null;
for (let i = 0, ii = pages.length; i < ii; ++i) {
if (spread === null) {
spread = document.createElement("div");
spread.className = "spread";
viewer.append(spread);
} else if (i % 2 === parity) {
spread = spread.cloneNode(false);
viewer.append(spread);
}
spread.append(pages[i].div);
}
}
}
if (!pageNumber) {
return;
}
if (this._currentScaleValue && isNaN(this._currentScaleValue)) {
this.#setScale(this._currentScaleValue, {
noScroll: true
});
}
this._setCurrentPageNumber(pageNumber, true);
this.update();
}
_getPageAdvance(currentPageNumber, previous = false) {
switch (this._scrollMode) {
case ScrollMode.WRAPPED:
{
const {
views
} = this._getVisiblePages(),
pageLayout = new Map();
for (const {
id,
y,
percent,
widthPercent
} of views) {
if (percent === 0 || widthPercent < 100) {
continue;
}
let yArray = pageLayout.get(y);
if (!yArray) {
pageLayout.set(y, yArray ||= []);
}
yArray.push(id);
}
for (const yArray of pageLayout.values()) {
const currentIndex = yArray.indexOf(currentPageNumber);
if (currentIndex === -1) {
continue;
}
const numPages = yArray.length;
if (numPages === 1) {
break;
}
if (previous) {
for (let i = currentIndex - 1, ii = 0; i >= ii; i--) {
const currentId = yArray[i],
expectedId = yArray[i + 1] - 1;
if (currentId < expectedId) {
return currentPageNumber - expectedId;
}
}
} else {
for (let i = currentIndex + 1, ii = numPages; i < ii; i++) {
const currentId = yArray[i],
expectedId = yArray[i - 1] + 1;
if (currentId > expectedId) {
return expectedId - currentPageNumber;
}
}
}
if (previous) {
const firstId = yArray[0];
if (firstId < currentPageNumber) {
return currentPageNumber - firstId + 1;
}
} else {
const lastId = yArray[numPages - 1];
if (lastId > currentPageNumber) {
return lastId - currentPageNumber + 1;
}
}
break;
}
break;
}
case ScrollMode.HORIZONTAL:
{
break;
}
case ScrollMode.PAGE:
case ScrollMode.VERTICAL:
{
if (this._spreadMode === SpreadMode.NONE) {
break;
}
const parity = this._spreadMode - 1;
if (previous && currentPageNumber % 2 !== parity) {
break;
} else if (!previous && currentPageNumber % 2 === parity) {
break;
}
const {
views
} = this._getVisiblePages(),
expectedId = previous ? currentPageNumber - 1 : currentPageNumber + 1;
for (const {
id,
percent,
widthPercent
} of views) {
if (id !== expectedId) {
continue;
}
if (percent > 0 && widthPercent === 100) {
return 2;
}
break;
}
break;
}
}
return 1;
}
nextPage() {
const currentPageNumber = this._currentPageNumber,
pagesCount = this.pagesCount;
if (currentPageNumber >= pagesCount) {
return false;
}
const advance = this._getPageAdvance(currentPageNumber, false) || 1;
this.currentPageNumber = Math.min(currentPageNumber + advance, pagesCount);
return true;
}
previousPage() {
const currentPageNumber = this._currentPageNumber;
if (currentPageNumber <= 1) {
return false;
}
const advance = this._getPageAdvance(currentPageNumber, true) || 1;
this.currentPageNumber = Math.max(currentPageNumber - advance, 1);
return true;
}
updateScale({
drawingDelay,
scaleFactor = null,
steps = null,
origin
}) {
if (steps === null && scaleFactor === null) {
throw new Error("Invalid updateScale options: either `steps` or `scaleFactor` must be provided.");
}
if (!this.pdfDocument) {
return;
}
let newScale = this._currentScale;
if (scaleFactor > 0 && scaleFactor !== 1) {
newScale = Math.round(newScale * scaleFactor * 100) / 100;
} else if (steps) {
const delta = steps > 0 ? DEFAULT_SCALE_DELTA : 1 / DEFAULT_SCALE_DELTA;
const round = steps > 0 ? Math.ceil : Math.floor;
steps = Math.abs(steps);
do {
newScale = round((newScale * delta).toFixed(2) * 10) / 10;
} while (--steps > 0);
}
newScale = Math.max(MIN_SCALE, Math.min(MAX_SCALE, newScale));
this.#setScale(newScale, {
noScroll: false,
drawingDelay,
origin
});
}
increaseScale(options = {}) {
this.updateScale({
...options,
steps: options.steps ?? 1
});
}
decreaseScale(options = {}) {
this.updateScale({
...options,
steps: -(options.steps ?? 1)
});
}
#updateContainerHeightCss(height = this.container.clientHeight) {
if (height !== this.#previousContainerHeight) {
this.#previousContainerHeight = height;
docStyle.setProperty("--viewer-container-height", `${height}px`);
}
}
#resizeObserverCallback(entries) {
for (const entry of entries) {
if (entry.target === this.container) {
this.#updateContainerHeightCss(Math.floor(entry.borderBoxSize[0].blockSize));
this.#containerTopLeft = null;
break;
}
}
}
get containerTopLeft() {
return this.#containerTopLeft ||= [this.container.offsetTop, this.container.offsetLeft];
}
#cleanupSwitchAnnotationEditorMode() {
this.#switchAnnotationEditorModeAC?.abort();
this.#switchAnnotationEditorModeAC = null;
if (this.#switchAnnotationEditorModeTimeoutId !== null) {
clearTimeout(this.#switchAnnotationEditorModeTimeoutId);
this.#switchAnnotationEditorModeTimeoutId = null;
}
}
get annotationEditorMode() {
return this.#annotationEditorUIManager ? this.#annotationEditorMode : AnnotationEditorType.DISABLE;
}
set annotationEditorMode({
mode,
editId = null,
isFromKeyboard = false
}) {
if (!this.#annotationEditorUIManager) {
throw new Error(`The AnnotationEditor is not enabled.`);
}
if (this.#annotationEditorMode === mode) {
return;
}
if (!isValidAnnotationEditorMode(mode)) {
throw new Error(`Invalid AnnotationEditor mode: ${mode}`);
}
if (!this.pdfDocument) {
return;
}
if (mode === AnnotationEditorType.STAMP) {
this.#mlManager?.loadModel("altText");
}
const {
eventBus
} = this;
const updater = () => {
this.#cleanupSwitchAnnotationEditorMode();
this.#annotationEditorMode = mode;
this.#annotationEditorUIManager.updateMode(mode, editId, isFromKeyboard);
eventBus.dispatch("annotationeditormodechanged", {
source: this,
mode
});
};
if (mode === AnnotationEditorType.NONE || this.#annotationEditorMode === AnnotationEditorType.NONE) {
const isEditing = mode !== AnnotationEditorType.NONE;
if (!isEditing) {
this.pdfDocument.annotationStorage.resetModifiedIds();
}
for (const pageView of this._pages) {
pageView.toggleEditingMode(isEditing);
}
const idsToRefresh = this.#switchToEditAnnotationMode();
if (isEditing && idsToRefresh) {
this.#cleanupSwitchAnnotationEditorMode();
this.#switchAnnotationEditorModeAC = new AbortController();
const signal = AbortSignal.any([this.#eventAbortController.signal, this.#switchAnnotationEditorModeAC.signal]);
eventBus._on("pagerendered", ({
pageNumber
}) => {
idsToRefresh.delete(pageNumber);
if (idsToRefresh.size === 0) {
this.#switchAnnotationEditorModeTimeoutId = setTimeout(updater, 0);
}
}, {
signal
});
return;
}
}
updater();
}
refresh(noUpdate = false, updateArgs = Object.create(null)) {
if (!this.pdfDocument) {
return;
}
for (const pageView of this._pages) {
pageView.update(updateArgs);
}
if (this.#scaleTimeoutId !== null) {
clearTimeout(this.#scaleTimeoutId);
this.#scaleTimeoutId = null;
}
if (!noUpdate) {
this.update();
}
}
}
;// ./web/secondary_toolbar.js
class SecondaryToolbar {
#opts;
constructor(options, eventBus) {
this.#opts = options;
const buttons = [{
element: options.presentationModeButton,
eventName: "presentationmode",
close: true
}, {
element: options.printButton,
eventName: "print",
close: true
}, {
element: options.downloadButton,
eventName: "download",
close: true
}, {
element: options.viewBookmarkButton,
eventName: null,
close: true
}, {
element: options.firstPageButton,
eventName: "firstpage",
close: true
}, {
element: options.lastPageButton,
eventName: "lastpage",
close: true
}, {
element: options.pageRotateCwButton,
eventName: "rotatecw",
close: false
}, {
element: options.pageRotateCcwButton,
eventName: "rotateccw",
close: false
}, {
element: options.cursorSelectToolButton,
eventName: "switchcursortool",
eventDetails: {
tool: CursorTool.SELECT
},
close: true
}, {
element: options.cursorHandToolButton,
eventName: "switchcursortool",
eventDetails: {
tool: CursorTool.HAND
},
close: true
}, {
element: options.scrollPageButton,
eventName: "switchscrollmode",
eventDetails: {
mode: ScrollMode.PAGE
},
close: true
}, {
element: options.scrollVerticalButton,
eventName: "switchscrollmode",
eventDetails: {
mode: ScrollMode.VERTICAL
},
close: true
}, {
element: options.scrollHorizontalButton,
eventName: "switchscrollmode",
eventDetails: {
mode: ScrollMode.HORIZONTAL
},
close: true
}, {
element: options.scrollWrappedButton,
eventName: "switchscrollmode",
eventDetails: {
mode: ScrollMode.WRAPPED
},
close: true
}, {
element: options.spreadNoneButton,
eventName: "switchspreadmode",
eventDetails: {
mode: SpreadMode.NONE
},
close: true
}, {
element: options.spreadOddButton,
eventName: "switchspreadmode",
eventDetails: {
mode: SpreadMode.ODD
},
close: true
}, {
element: options.spreadEvenButton,
eventName: "switchspreadmode",
eventDetails: {
mode: SpreadMode.EVEN
},
close: true
}, {
element: options.imageAltTextSettingsButton,
eventName: "imagealttextsettings",
close: true
}, {
element: options.documentPropertiesButton,
eventName: "documentproperties",
close: true
}];
this.eventBus = eventBus;
this.opened = false;
this.#bindListeners(buttons);
this.reset();
}
get isOpen() {
return this.opened;
}
setPageNumber(pageNumber) {
this.pageNumber = pageNumber;
this.#updateUIState();
}
setPagesCount(pagesCount) {
this.pagesCount = pagesCount;
this.#updateUIState();
}
reset() {
this.pageNumber = 0;
this.pagesCount = 0;
this.#updateUIState();
this.eventBus.dispatch("switchcursortool", {
source: this,
reset: true
});
this.#scrollModeChanged({
mode: ScrollMode.VERTICAL
});
this.#spreadModeChanged({
mode: SpreadMode.NONE
});
}
#updateUIState() {
const {
firstPageButton,
lastPageButton,
pageRotateCwButton,
pageRotateCcwButton
} = this.#opts;
firstPageButton.disabled = this.pageNumber <= 1;
lastPageButton.disabled = this.pageNumber >= this.pagesCount;
pageRotateCwButton.disabled = this.pagesCount === 0;
pageRotateCcwButton.disabled = this.pagesCount === 0;
}
#bindListeners(buttons) {
const {
eventBus
} = this;
const {
toggleButton
} = this.#opts;
toggleButton.addEventListener("click", this.toggle.bind(this));
for (const {
element,
eventName,
close,
eventDetails
} of buttons) {
element.addEventListener("click", evt => {
if (eventName !== null) {
eventBus.dispatch(eventName, {
source: this,
...eventDetails
});
}
if (close) {
this.close();
}
eventBus.dispatch("reporttelemetry", {
source: this,
details: {
type: "buttons",
data: {
id: element.id
}
}
});
});
}
eventBus._on("cursortoolchanged", this.#cursorToolChanged.bind(this));
eventBus._on("scrollmodechanged", this.#scrollModeChanged.bind(this));
eventBus._on("spreadmodechanged", this.#spreadModeChanged.bind(this));
}
#cursorToolChanged({
tool,
disabled
}) {
const {
cursorSelectToolButton,
cursorHandToolButton
} = this.#opts;
toggleCheckedBtn(cursorSelectToolButton, tool === CursorTool.SELECT);
toggleCheckedBtn(cursorHandToolButton, tool === CursorTool.HAND);
cursorSelectToolButton.disabled = disabled;
cursorHandToolButton.disabled = disabled;
}
#scrollModeChanged({
mode
}) {
const {
scrollPageButton,
scrollVerticalButton,
scrollHorizontalButton,
scrollWrappedButton,
spreadNoneButton,
spreadOddButton,
spreadEvenButton
} = this.#opts;
toggleCheckedBtn(scrollPageButton, mode === ScrollMode.PAGE);
toggleCheckedBtn(scrollVerticalButton, mode === ScrollMode.VERTICAL);
toggleCheckedBtn(scrollHorizontalButton, mode === ScrollMode.HORIZONTAL);
toggleCheckedBtn(scrollWrappedButton, mode === ScrollMode.WRAPPED);
const forceScrollModePage = this.pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE;
scrollPageButton.disabled = forceScrollModePage;
scrollVerticalButton.disabled = forceScrollModePage;
scrollHorizontalButton.disabled = forceScrollModePage;
scrollWrappedButton.disabled = forceScrollModePage;
const isHorizontal = mode === ScrollMode.HORIZONTAL;
spreadNoneButton.disabled = isHorizontal;
spreadOddButton.disabled = isHorizontal;
spreadEvenButton.disabled = isHorizontal;
}
#spreadModeChanged({
mode
}) {
const {
spreadNoneButton,
spreadOddButton,
spreadEvenButton
} = this.#opts;
toggleCheckedBtn(spreadNoneButton, mode === SpreadMode.NONE);
toggleCheckedBtn(spreadOddButton, mode === SpreadMode.ODD);
toggleCheckedBtn(spreadEvenButton, mode === SpreadMode.EVEN);
}
open() {
if (this.opened) {
return;
}
this.opened = true;
const {
toggleButton,
toolbar
} = this.#opts;
toggleExpandedBtn(toggleButton, true, toolbar);
}
close() {
if (!this.opened) {
return;
}
this.opened = false;
const {
toggleButton,
toolbar
} = this.#opts;
toggleExpandedBtn(toggleButton, false, toolbar);
}
toggle() {
if (this.opened) {
this.close();
} else {
this.open();
}
}
}
;// ./web/toolbar.js
class Toolbar {
#opts;
constructor(options, eventBus, toolbarDensity = 0) {
this.#opts = options;
this.eventBus = eventBus;
const buttons = [{
element: options.previous,
eventName: "previouspage"
}, {
element: options.next,
eventName: "nextpage"
}, {
element: options.zoomIn,
eventName: "zoomin"
}, {
element: options.zoomOut,
eventName: "zoomout"
}, {
element: options.print,
eventName: "print"
}, {
element: options.download,
eventName: "download"
}, {
element: options.editorFreeTextButton,
eventName: "switchannotationeditormode",
eventDetails: {
get mode() {
const {
classList
} = options.editorFreeTextButton;
return classList.contains("toggled") ? AnnotationEditorType.NONE : AnnotationEditorType.FREETEXT;
}
}
}, {
element: options.editorHighlightButton,
eventName: "switchannotationeditormode",
eventDetails: {
get mode() {
const {
classList
} = options.editorHighlightButton;
return classList.contains("toggled") ? AnnotationEditorType.NONE : AnnotationEditorType.HIGHLIGHT;
}
}
}, {
element: options.editorInkButton,
eventName: "switchannotationeditormode",
eventDetails: {
get mode() {
const {
classList
} = options.editorInkButton;
return classList.contains("toggled") ? AnnotationEditorType.NONE : AnnotationEditorType.INK;
}
}
}, {
element: options.editorStampButton,
eventName: "switchannotationeditormode",
eventDetails: {
get mode() {
const {
classList
} = options.editorStampButton;
return classList.contains("toggled") ? AnnotationEditorType.NONE : AnnotationEditorType.STAMP;
}
},
telemetry: {
type: "editing",
data: {
action: "pdfjs.image.icon_click"
}
}
}];
this.#bindListeners(buttons);
this.#updateToolbarDensity({
value: toolbarDensity
});
this.reset();
}
#updateToolbarDensity({
value
}) {
let name = "normal";
switch (value) {
case 1:
name = "compact";
break;
case 2:
name = "touch";
break;
}
document.documentElement.setAttribute("data-toolbar-density", name);
}
#setAnnotationEditorUIManager(uiManager, parentContainer) {
const colorPicker = new ColorPicker({
uiManager
});
uiManager.setMainHighlightColorPicker(colorPicker);
parentContainer.append(colorPicker.renderMainDropdown());
}
setPageNumber(pageNumber, pageLabel) {
this.pageNumber = pageNumber;
this.pageLabel = pageLabel;
this.#updateUIState(false);
}
setPagesCount(pagesCount, hasPageLabels) {
this.pagesCount = pagesCount;
this.hasPageLabels = hasPageLabels;
this.#updateUIState(true);
}
setPageScale(pageScaleValue, pageScale) {
this.pageScaleValue = (pageScaleValue || pageScale).toString();
this.pageScale = pageScale;
this.#updateUIState(false);
}
reset() {
this.pageNumber = 0;
this.pageLabel = null;
this.hasPageLabels = false;
this.pagesCount = 0;
this.pageScaleValue = DEFAULT_SCALE_VALUE;
this.pageScale = DEFAULT_SCALE;
this.#updateUIState(true);
this.updateLoadingIndicatorState();
this.#editorModeChanged({
mode: AnnotationEditorType.DISABLE
});
}
#bindListeners(buttons) {
const {
eventBus
} = this;
const {
editorHighlightColorPicker,
editorHighlightButton,
pageNumber,
scaleSelect
} = this.#opts;
const self = this;
for (const {
element,
eventName,
eventDetails,
telemetry
} of buttons) {
element.addEventListener("click", evt => {
if (eventName !== null) {
eventBus.dispatch(eventName, {
source: this,
...eventDetails,
isFromKeyboard: evt.detail === 0
});
}
if (telemetry) {
eventBus.dispatch("reporttelemetry", {
source: this,
details: telemetry
});
}
});
}
pageNumber.addEventListener("click", function () {
this.select();
});
pageNumber.addEventListener("change", function () {
eventBus.dispatch("pagenumberchanged", {
source: self,
value: this.value
});
});
scaleSelect.addEventListener("change", function () {
if (this.value === "custom") {
return;
}
eventBus.dispatch("scalechanged", {
source: self,
value: this.value
});
});
scaleSelect.addEventListener("click", function ({
target
}) {
if (this.value === self.pageScaleValue && target.tagName.toUpperCase() === "OPTION") {
this.blur();
}
});
scaleSelect.oncontextmenu = noContextMenu;
eventBus._on("annotationeditormodechanged", this.#editorModeChanged.bind(this));
eventBus._on("showannotationeditorui", ({
mode
}) => {
switch (mode) {
case AnnotationEditorType.HIGHLIGHT:
editorHighlightButton.click();
break;
}
});
eventBus._on("toolbardensity", this.#updateToolbarDensity.bind(this));
if (editorHighlightColorPicker) {
eventBus._on("annotationeditoruimanager", ({
uiManager
}) => {
this.#setAnnotationEditorUIManager(uiManager, editorHighlightColorPicker);
}, {
once: true
});
}
}
#editorModeChanged({
mode
}) {
const {
editorFreeTextButton,
editorFreeTextParamsToolbar,
editorHighlightButton,
editorHighlightParamsToolbar,
editorInkButton,
editorInkParamsToolbar,
editorStampButton,
editorStampParamsToolbar
} = this.#opts;
toggleExpandedBtn(editorFreeTextButton, mode === AnnotationEditorType.FREETEXT, editorFreeTextParamsToolbar);
toggleExpandedBtn(editorHighlightButton, mode === AnnotationEditorType.HIGHLIGHT, editorHighlightParamsToolbar);
toggleExpandedBtn(editorInkButton, mode === AnnotationEditorType.INK, editorInkParamsToolbar);
toggleExpandedBtn(editorStampButton, mode === AnnotationEditorType.STAMP, editorStampParamsToolbar);
const isDisable = mode === AnnotationEditorType.DISABLE;
editorFreeTextButton.disabled = isDisable;
editorHighlightButton.disabled = isDisable;
editorInkButton.disabled = isDisable;
editorStampButton.disabled = isDisable;
}
#updateUIState(resetNumPages = false) {
const {
pageNumber,
pagesCount,
pageScaleValue,
pageScale
} = this;
const opts = this.#opts;
if (resetNumPages) {
if (this.hasPageLabels) {
opts.pageNumber.type = "text";
opts.numPages.setAttribute("data-l10n-id", "pdfjs-page-of-pages");
} else {
opts.pageNumber.type = "number";
opts.numPages.setAttribute("data-l10n-id", "pdfjs-of-pages");
opts.numPages.setAttribute("data-l10n-args", JSON.stringify({
pagesCount
}));
}
opts.pageNumber.max = pagesCount;
}
if (this.hasPageLabels) {
opts.pageNumber.value = this.pageLabel;
opts.numPages.setAttribute("data-l10n-args", JSON.stringify({
pageNumber,
pagesCount
}));
} else {
opts.pageNumber.value = pageNumber;
}
opts.previous.disabled = pageNumber <= 1;
opts.next.disabled = pageNumber >= pagesCount;
opts.zoomOut.disabled = pageScale <= MIN_SCALE;
opts.zoomIn.disabled = pageScale >= MAX_SCALE;
let predefinedValueFound = false;
for (const option of opts.scaleSelect.options) {
if (option.value !== pageScaleValue) {
option.selected = false;
continue;
}
option.selected = true;
predefinedValueFound = true;
}
if (!predefinedValueFound) {
opts.customScaleOption.selected = true;
opts.customScaleOption.setAttribute("data-l10n-args", JSON.stringify({
scale: Math.round(pageScale * 10000) / 100
}));
}
}
updateLoadingIndicatorState(loading = false) {
const {
pageNumber
} = this.#opts;
pageNumber.classList.toggle("loading", loading);
}
}
;// ./web/view_history.js
const DEFAULT_VIEW_HISTORY_CACHE_SIZE = 20;
class ViewHistory {
constructor(fingerprint, cacheSize = DEFAULT_VIEW_HISTORY_CACHE_SIZE) {
this.fingerprint = fingerprint;
this.cacheSize = cacheSize;
this._initializedPromise = this._readFromStorage().then(databaseStr => {
const database = JSON.parse(databaseStr || "{}");
let index = -1;
if (!Array.isArray(database.files)) {
database.files = [];
} else {
while (database.files.length >= this.cacheSize) {
database.files.shift();
}
for (let i = 0, ii = database.files.length; i < ii; i++) {
const branch = database.files[i];
if (branch.fingerprint === this.fingerprint) {
index = i;
break;
}
}
}
if (index === -1) {
index = database.files.push({
fingerprint: this.fingerprint
}) - 1;
}
this.file = database.files[index];
this.database = database;
});
}
async _writeToStorage() {
const databaseStr = JSON.stringify(this.database);
sessionStorage.setItem("pdfjs.history", databaseStr);
}
async _readFromStorage() {
return sessionStorage.getItem("pdfjs.history");
}
async set(name, val) {
await this._initializedPromise;
this.file[name] = val;
return this._writeToStorage();
}
async setMultiple(properties) {
await this._initializedPromise;
for (const name in properties) {
this.file[name] = properties[name];
}
return this._writeToStorage();
}
async get(name, defaultValue) {
await this._initializedPromise;
const val = this.file[name];
return val !== undefined ? val : defaultValue;
}
async getMultiple(properties) {
await this._initializedPromise;
const values = Object.create(null);
for (const name in properties) {
const val = this.file[name];
values[name] = val !== undefined ? val : properties[name];
}
return values;
}
}
;// ./web/app.js
const FORCE_PAGES_LOADED_TIMEOUT = 10000;
const MIN_TOUCH_DISTANCE_TO_PINCH = 35 / (window.devicePixelRatio || 1);
const ViewOnLoad = {
UNKNOWN: -1,
PREVIOUS: 0,
INITIAL: 1
};
const PDFViewerApplication = {
initialBookmark: document.location.hash.substring(1),
_initializedCapability: {
...Promise.withResolvers(),
settled: false
},
appConfig: null,
pdfDocument: null,
pdfLoadingTask: null,
printService: null,
pdfViewer: null,
pdfThumbnailViewer: null,
pdfRenderingQueue: null,
pdfPresentationMode: null,
pdfDocumentProperties: null,
pdfLinkService: null,
pdfHistory: null,
pdfSidebar: null,
pdfOutlineViewer: null,
pdfAttachmentViewer: null,
pdfLayerViewer: null,
pdfCursorTools: null,
pdfScriptingManager: null,
store: null,
downloadManager: null,
overlayManager: null,
preferences: new Preferences(),
toolbar: null,
secondaryToolbar: null,
eventBus: null,
l10n: null,
annotationEditorParams: null,
imageAltTextSettings: null,
isInitialViewSet: false,
isViewerEmbedded: window.parent !== window,
url: "",
baseUrl: "",
mlManager: null,
_downloadUrl: "",
_eventBusAbortController: null,
_windowAbortController: null,
_globalAbortController: new AbortController(),
documentInfo: null,
metadata: null,
_contentDispositionFilename: null,
_contentLength: null,
_saveInProgress: false,
_wheelUnusedTicks: 0,
_wheelUnusedFactor: 1,
_touchUnusedTicks: 0,
_touchUnusedFactor: 1,
_PDFBug: null,
_hasAnnotationEditors: false,
_title: document.title,
_printAnnotationStoragePromise: null,
_touchInfo: null,
_isPinching: false,
_isCtrlKeyDown: false,
_caretBrowsing: null,
_isScrolling: false,
editorUndoBar: null,
async initialize(appConfig) {
this.appConfig = appConfig;
try {
await this.preferences.initializedPromise;
} catch (ex) {
console.error(`initialize: "${ex.message}".`);
}
if (AppOptions.get("pdfBugEnabled")) {
await this._parseHashParams();
}
if (AppOptions.get("enableAltText")) {
this.mlManager = new MLManager({
enableGuessAltText: AppOptions.get("enableGuessAltText"),
enableAltTextModelDownload: AppOptions.get("enableAltTextModelDownload"),
altTextLearnMoreUrl: AppOptions.get("altTextLearnMoreUrl")
});
}
this.l10n = await this.externalServices.createL10n();
document.getElementsByTagName("html")[0].dir = this.l10n.getDirection();
if (this.isViewerEmbedded && AppOptions.get("externalLinkTarget") === LinkTarget.NONE) {
AppOptions.set("externalLinkTarget", LinkTarget.TOP);
}
await this._initializeViewerComponents();
this.bindEvents();
this.bindWindowEvents();
this._initializedCapability.settled = true;
this._initializedCapability.resolve();
},
async _parseHashParams() {
const hash = document.location.hash.substring(1);
if (!hash) {
return;
}
const {
mainContainer,
viewerContainer
} = this.appConfig,
params = parseQueryString(hash);
const loadPDFBug = async () => {
if (this._PDFBug) {
return;
}
const {
PDFBug
} = await import(/*webpackIgnore: true*/AppOptions.get("debuggerSrc"));
this._PDFBug = PDFBug;
};
if (params.get("disableworker") === "true") {
try {
GlobalWorkerOptions.workerSrc ||= AppOptions.get("workerSrc");
await import(/*webpackIgnore: true*/PDFWorker.workerSrc);
} catch (ex) {
console.error(`_parseHashParams: "${ex.message}".`);
}
}
if (params.has("textlayer")) {
switch (params.get("textlayer")) {
case "off":
AppOptions.set("textLayerMode", TextLayerMode.DISABLE);
break;
case "visible":
case "shadow":
case "hover":
viewerContainer.classList.add(`textLayer-${params.get("textlayer")}`);
try {
await loadPDFBug();
this._PDFBug.loadCSS();
} catch (ex) {
console.error(`_parseHashParams: "${ex.message}".`);
}
break;
}
}
if (params.has("pdfbug")) {
AppOptions.setAll({
pdfBug: true,
fontExtraProperties: true
});
const enabled = params.get("pdfbug").split(",");
try {
await loadPDFBug();
this._PDFBug.init(mainContainer, enabled);
} catch (ex) {
console.error(`_parseHashParams: "${ex.message}".`);
}
}
const opts = {
disableAutoFetch: x => x === "true",
disableFontFace: x => x === "true",
disableHistory: x => x === "true",
disableRange: x => x === "true",
disableStream: x => x === "true",
verbosity: x => x | 0
};
for (const name in opts) {
const check = opts[name],
key = name.toLowerCase();
if (params.has(key)) {
AppOptions.set(name, check(params.get(key)));
}
}
},
async _initializeViewerComponents() {
const {
appConfig,
externalServices,
l10n
} = this;
const eventBus = new FirefoxEventBus(AppOptions.get("allowedGlobalEvents"), externalServices, AppOptions.get("isInAutomation"));
this.eventBus = AppOptions.eventBus = eventBus;
this.mlManager?.setEventBus(eventBus, this._globalAbortController.signal);
this.overlayManager = new OverlayManager();
const pdfRenderingQueue = new PDFRenderingQueue();
pdfRenderingQueue.onIdle = this._cleanup.bind(this);
this.pdfRenderingQueue = pdfRenderingQueue;
const pdfLinkService = new PDFLinkService({
eventBus,
externalLinkTarget: AppOptions.get("externalLinkTarget"),
externalLinkRel: AppOptions.get("externalLinkRel"),
ignoreDestinationZoom: AppOptions.get("ignoreDestinationZoom")
});
this.pdfLinkService = pdfLinkService;
const downloadManager = this.downloadManager = new DownloadManager();
const findController = new PDFFindController({
linkService: pdfLinkService,
eventBus,
updateMatchesCountOnProgress: true
});
this.findController = findController;
const pdfScriptingManager = new PDFScriptingManager({
eventBus,
externalServices,
docProperties: this._scriptingDocProperties.bind(this)
});
this.pdfScriptingManager = pdfScriptingManager;
const container = appConfig.mainContainer,
viewer = appConfig.viewerContainer;
const annotationEditorMode = AppOptions.get("annotationEditorMode");
const pageColors = AppOptions.get("forcePageColors") || window.matchMedia("(forced-colors: active)").matches ? {
background: AppOptions.get("pageColorsBackground"),
foreground: AppOptions.get("pageColorsForeground")
} : null;
let altTextManager;
if (AppOptions.get("enableUpdatedAddImage")) {
altTextManager = appConfig.newAltTextDialog ? new NewAltTextManager(appConfig.newAltTextDialog, this.overlayManager, eventBus) : null;
} else {
altTextManager = appConfig.altTextDialog ? new AltTextManager(appConfig.altTextDialog, container, this.overlayManager, eventBus) : null;
}
if (appConfig.editorUndoBar) {
this.editorUndoBar = new EditorUndoBar(appConfig.editorUndoBar, eventBus);
}
const enableHWA = AppOptions.get("enableHWA");
const pdfViewer = new PDFViewer({
container,
viewer,
eventBus,
renderingQueue: pdfRenderingQueue,
linkService: pdfLinkService,
downloadManager,
altTextManager,
editorUndoBar: this.editorUndoBar,
findController,
scriptingManager: AppOptions.get("enableScripting") && pdfScriptingManager,
l10n,
textLayerMode: AppOptions.get("textLayerMode"),
annotationMode: AppOptions.get("annotationMode"),
annotationEditorMode,
annotationEditorHighlightColors: AppOptions.get("highlightEditorColors"),
enableHighlightFloatingButton: AppOptions.get("enableHighlightFloatingButton"),
enableUpdatedAddImage: AppOptions.get("enableUpdatedAddImage"),
enableNewAltTextWhenAddingImage: AppOptions.get("enableNewAltTextWhenAddingImage"),
imageResourcesPath: AppOptions.get("imageResourcesPath"),
enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"),
maxCanvasPixels: AppOptions.get("maxCanvasPixels"),
enablePermissions: AppOptions.get("enablePermissions"),
pageColors,
mlManager: this.mlManager,
abortSignal: this._globalAbortController.signal,
enableHWA
});
this.pdfViewer = pdfViewer;
pdfRenderingQueue.setViewer(pdfViewer);
pdfLinkService.setViewer(pdfViewer);
pdfScriptingManager.setViewer(pdfViewer);
if (appConfig.sidebar?.thumbnailView) {
this.pdfThumbnailViewer = new PDFThumbnailViewer({
container: appConfig.sidebar.thumbnailView,
eventBus,
renderingQueue: pdfRenderingQueue,
linkService: pdfLinkService,
pageColors,
abortSignal: this._globalAbortController.signal,
enableHWA
});
pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
}
if (!this.isViewerEmbedded && !AppOptions.get("disableHistory")) {
this.pdfHistory = new PDFHistory({
linkService: pdfLinkService,
eventBus
});
pdfLinkService.setHistory(this.pdfHistory);
}
if (!this.supportsIntegratedFind && appConfig.findBar) {
this.findBar = new PDFFindBar(appConfig.findBar, appConfig.principalContainer, eventBus);
}
if (appConfig.annotationEditorParams) {
if (annotationEditorMode !== AnnotationEditorType.DISABLE) {
this.annotationEditorParams = new AnnotationEditorParams(appConfig.annotationEditorParams, eventBus);
} else {
for (const id of ["editorModeButtons", "editorModeSeparator"]) {
document.getElementById(id)?.classList.add("hidden");
}
}
}
if (this.mlManager && appConfig.secondaryToolbar?.imageAltTextSettingsButton) {
this.imageAltTextSettings = new ImageAltTextSettings(appConfig.altTextSettingsDialog, this.overlayManager, eventBus, this.mlManager);
}
if (appConfig.documentProperties) {
this.pdfDocumentProperties = new PDFDocumentProperties(appConfig.documentProperties, this.overlayManager, eventBus, l10n, () => this._docFilename);
}
if (appConfig.secondaryToolbar?.cursorHandToolButton) {
this.pdfCursorTools = new PDFCursorTools({
container,
eventBus,
cursorToolOnLoad: AppOptions.get("cursorToolOnLoad")
});
}
if (appConfig.toolbar) {
this.toolbar = new Toolbar(appConfig.toolbar, eventBus, AppOptions.get("toolbarDensity"));
}
if (appConfig.secondaryToolbar) {
if (AppOptions.get("enableAltText")) {
appConfig.secondaryToolbar.imageAltTextSettingsButton?.classList.remove("hidden");
appConfig.secondaryToolbar.imageAltTextSettingsSeparator?.classList.remove("hidden");
}
this.secondaryToolbar = new SecondaryToolbar(appConfig.secondaryToolbar, eventBus);
}
if (this.supportsFullscreen && appConfig.secondaryToolbar?.presentationModeButton) {
this.pdfPresentationMode = new PDFPresentationMode({
container,
pdfViewer,
eventBus
});
}
if (appConfig.passwordOverlay) {
this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay, this.overlayManager, this.isViewerEmbedded);
}
if (appConfig.sidebar?.outlineView) {
this.pdfOutlineViewer = new PDFOutlineViewer({
container: appConfig.sidebar.outlineView,
eventBus,
l10n,
linkService: pdfLinkService,
downloadManager
});
}
if (appConfig.sidebar?.attachmentsView) {
this.pdfAttachmentViewer = new PDFAttachmentViewer({
container: appConfig.sidebar.attachmentsView,
eventBus,
l10n,
downloadManager
});
}
if (appConfig.sidebar?.layersView) {
this.pdfLayerViewer = new PDFLayerViewer({
container: appConfig.sidebar.layersView,
eventBus,
l10n
});
}
if (appConfig.sidebar) {
this.pdfSidebar = new PDFSidebar({
elements: appConfig.sidebar,
eventBus,
l10n
});
this.pdfSidebar.onToggled = this.forceRendering.bind(this);
this.pdfSidebar.onUpdateThumbnails = () => {
for (const pageView of pdfViewer.getCachedPageViews()) {
if (pageView.renderingState === RenderingStates.FINISHED) {
this.pdfThumbnailViewer.getThumbnail(pageView.id - 1)?.setImage(pageView);
}
}
this.pdfThumbnailViewer.scrollThumbnailIntoView(pdfViewer.currentPageNumber);
};
}
},
async run(config) {
await this.initialize(config);
const {
appConfig,
eventBus
} = this;
let file;
file = window.location.href;
if (!AppOptions.get("supportsDocumentFonts")) {
AppOptions.set("disableFontFace", true);
this.l10n.get("pdfjs-web-fonts-disabled").then(msg => {
console.warn(msg);
});
}
if (!this.supportsPrinting) {
appConfig.toolbar?.print?.classList.add("hidden");
appConfig.secondaryToolbar?.printButton.classList.add("hidden");
}
if (!this.supportsFullscreen) {
appConfig.secondaryToolbar?.presentationModeButton.classList.add("hidden");
}
if (this.supportsIntegratedFind) {
appConfig.findBar?.toggleButton?.classList.add("hidden");
}
this.setTitleUsingUrl(file, file);
this.externalServices.initPassiveLoading();
},
get externalServices() {
return shadow(this, "externalServices", new ExternalServices());
},
get initialized() {
return this._initializedCapability.settled;
},
get initializedPromise() {
return this._initializedCapability.promise;
},
updateZoom(steps, scaleFactor, origin) {
if (this.pdfViewer.isInPresentationMode) {
return;
}
this.pdfViewer.updateScale({
drawingDelay: AppOptions.get("defaultZoomDelay"),
steps,
scaleFactor,
origin
});
},
zoomIn() {
this.updateZoom(1);
},
zoomOut() {
this.updateZoom(-1);
},
zoomReset() {
if (this.pdfViewer.isInPresentationMode) {
return;
}
this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
},
get pagesCount() {
return this.pdfDocument ? this.pdfDocument.numPages : 0;
},
get page() {
return this.pdfViewer.currentPageNumber;
},
set page(val) {
this.pdfViewer.currentPageNumber = val;
},
get supportsPrinting() {
return PDFPrintServiceFactory.supportsPrinting;
},
get supportsFullscreen() {
return shadow(this, "supportsFullscreen", document.fullscreenEnabled);
},
get supportsPinchToZoom() {
return shadow(this, "supportsPinchToZoom", AppOptions.get("supportsPinchToZoom"));
},
get supportsIntegratedFind() {
return shadow(this, "supportsIntegratedFind", AppOptions.get("supportsIntegratedFind"));
},
get loadingBar() {
const barElement = document.getElementById("loadingBar");
const bar = barElement ? new ProgressBar(barElement) : null;
return shadow(this, "loadingBar", bar);
},
get supportsMouseWheelZoomCtrlKey() {
return shadow(this, "supportsMouseWheelZoomCtrlKey", AppOptions.get("supportsMouseWheelZoomCtrlKey"));
},
get supportsMouseWheelZoomMetaKey() {
return shadow(this, "supportsMouseWheelZoomMetaKey", AppOptions.get("supportsMouseWheelZoomMetaKey"));
},
get supportsCaretBrowsingMode() {
return AppOptions.get("supportsCaretBrowsingMode");
},
moveCaret(isUp, select) {
this._caretBrowsing ||= new CaretBrowsingMode(this._globalAbortController.signal, this.appConfig.mainContainer, this.appConfig.viewerContainer, this.appConfig.toolbar?.container);
this._caretBrowsing.moveCaret(isUp, select);
},
setTitleUsingUrl(url = "", downloadUrl = null) {
this.url = url;
this.baseUrl = url.split("#", 1)[0];
if (downloadUrl) {
this._downloadUrl = downloadUrl === url ? this.baseUrl : downloadUrl.split("#", 1)[0];
}
if (isDataScheme(url)) {
this._hideViewBookmark();
} else {
AppOptions.set("docBaseUrl", this.baseUrl);
}
let title = getPdfFilenameFromUrl(url, "");
if (!title) {
try {
title = decodeURIComponent(getFilenameFromUrl(url));
} catch {}
}
this.setTitle(title || url);
},
setTitle(title = this._title) {
this._title = title;
if (this.isViewerEmbedded) {
return;
}
const editorIndicator = this._hasAnnotationEditors && !this.pdfRenderingQueue.printing;
document.title = `${editorIndicator ? "* " : ""}${title}`;
},
get _docFilename() {
return this._contentDispositionFilename || getPdfFilenameFromUrl(this.url);
},
_hideViewBookmark() {
const {
secondaryToolbar
} = this.appConfig;
secondaryToolbar?.viewBookmarkButton.classList.add("hidden");
if (secondaryToolbar?.presentationModeButton.classList.contains("hidden")) {
document.getElementById("viewBookmarkSeparator")?.classList.add("hidden");
}
},
async close() {
this._unblockDocumentLoadEvent();
this._hideViewBookmark();
if (!this.pdfLoadingTask) {
return;
}
const promises = [];
promises.push(this.pdfLoadingTask.destroy());
this.pdfLoadingTask = null;
if (this.pdfDocument) {
this.pdfDocument = null;
this.pdfThumbnailViewer?.setDocument(null);
this.pdfViewer.setDocument(null);
this.pdfLinkService.setDocument(null);
this.pdfDocumentProperties?.setDocument(null);
}
this.pdfLinkService.externalLinkEnabled = true;
this.store = null;
this.isInitialViewSet = false;
this.url = "";
this.baseUrl = "";
this._downloadUrl = "";
this.documentInfo = null;
this.metadata = null;
this._contentDispositionFilename = null;
this._contentLength = null;
this._saveInProgress = false;
this._hasAnnotationEditors = false;
promises.push(this.pdfScriptingManager.destroyPromise, this.passwordPrompt.close());
this.setTitle();
this.pdfSidebar?.reset();
this.pdfOutlineViewer?.reset();
this.pdfAttachmentViewer?.reset();
this.pdfLayerViewer?.reset();
this.pdfHistory?.reset();
this.findBar?.reset();
this.toolbar?.reset();
this.secondaryToolbar?.reset();
this._PDFBug?.cleanup();
await Promise.all(promises);
},
async open(args) {
if (this.pdfLoadingTask) {
await this.close();
}
const workerParams = AppOptions.getAll(OptionKind.WORKER);
Object.assign(GlobalWorkerOptions, workerParams);
if (args.data && isPdfFile(args.filename)) {
this._contentDispositionFilename = args.filename;
}
const apiParams = AppOptions.getAll(OptionKind.API);
const loadingTask = getDocument({
...apiParams,
...args
});
this.pdfLoadingTask = loadingTask;
loadingTask.onPassword = (updateCallback, reason) => {
if (this.isViewerEmbedded) {
this._unblockDocumentLoadEvent();
}
this.pdfLinkService.externalLinkEnabled = false;
this.passwordPrompt.setUpdateCallback(updateCallback, reason);
this.passwordPrompt.open();
};
loadingTask.onProgress = ({
loaded,
total
}) => {
this.progress(loaded / total);
};
return loadingTask.promise.then(pdfDocument => {
this.load(pdfDocument);
}, reason => {
if (loadingTask !== this.pdfLoadingTask) {
return undefined;
}
let key = "pdfjs-loading-error";
if (reason instanceof InvalidPDFException) {
key = "pdfjs-invalid-file-error";
} else if (reason instanceof MissingPDFException) {
key = "pdfjs-missing-file-error";
} else if (reason instanceof UnexpectedResponseException) {
key = "pdfjs-unexpected-response-error";
}
return this._documentError(key, {
message: reason.message
}).then(() => {
throw reason;
});
});
},
async download() {
let data;
try {
data = await this.pdfDocument.getData();
} catch {}
this.downloadManager.download(data, this._downloadUrl, this._docFilename);
},
async save() {
if (this._saveInProgress) {
return;
}
this._saveInProgress = true;
await this.pdfScriptingManager.dispatchWillSave();
try {
const data = await this.pdfDocument.saveDocument();
this.downloadManager.download(data, this._downloadUrl, this._docFilename);
} catch (reason) {
console.error(`Error when saving the document: ${reason.message}`);
await this.download();
} finally {
await this.pdfScriptingManager.dispatchDidSave();
this._saveInProgress = false;
}
if (this._hasAnnotationEditors) {
this.externalServices.reportTelemetry({
type: "editing",
data: {
type: "save",
stats: this.pdfDocument?.annotationStorage.editorStats
}
});
}
},
async downloadOrSave() {
const {
classList
} = this.appConfig.appContainer;
classList.add("wait");
await (this.pdfDocument?.annotationStorage.size > 0 ? this.save() : this.download());
classList.remove("wait");
},
async _documentError(key, moreInfo = null) {
this._unblockDocumentLoadEvent();
const message = await this._otherError(key || "pdfjs-loading-error", moreInfo);
this.eventBus.dispatch("documenterror", {
source: this,
message,
reason: moreInfo?.message ?? null
});
},
async _otherError(key, moreInfo = null) {
const message = await this.l10n.get(key);
const moreInfoText = [`PDF.js v${version || "?"} (build: ${build || "?"})`];
if (moreInfo) {
moreInfoText.push(`Message: ${moreInfo.message}`);
if (moreInfo.stack) {
moreInfoText.push(`Stack: ${moreInfo.stack}`);
} else {
if (moreInfo.filename) {
moreInfoText.push(`File: ${moreInfo.filename}`);
}
if (moreInfo.lineNumber) {
moreInfoText.push(`Line: ${moreInfo.lineNumber}`);
}
}
}
console.error(`${message}\n\n${moreInfoText.join("\n")}`);
return message;
},
progress(level) {
const percent = Math.round(level * 100);
if (!this.loadingBar || percent <= this.loadingBar.percent) {
return;
}
this.loadingBar.percent = percent;
if (this.pdfDocument?.loadingParams.disableAutoFetch ?? AppOptions.get("disableAutoFetch")) {
this.loadingBar.setDisableAutoFetch();
}
},
load(pdfDocument) {
this.pdfDocument = pdfDocument;
pdfDocument.getDownloadInfo().then(({
length
}) => {
this._contentLength = length;
this.loadingBar?.hide();
firstPagePromise.then(() => {
this.eventBus.dispatch("documentloaded", {
source: this
});
});
});
const pageLayoutPromise = pdfDocument.getPageLayout().catch(() => {});
const pageModePromise = pdfDocument.getPageMode().catch(() => {});
const openActionPromise = pdfDocument.getOpenAction().catch(() => {});
this.toolbar?.setPagesCount(pdfDocument.numPages, false);
this.secondaryToolbar?.setPagesCount(pdfDocument.numPages);
this.pdfLinkService.setDocument(pdfDocument);
this.pdfDocumentProperties?.setDocument(pdfDocument);
const pdfViewer = this.pdfViewer;
pdfViewer.setDocument(pdfDocument);
const {
firstPagePromise,
onePageRendered,
pagesPromise
} = pdfViewer;
this.pdfThumbnailViewer?.setDocument(pdfDocument);
const storedPromise = (this.store = new ViewHistory(pdfDocument.fingerprints[0])).getMultiple({
page: null,
zoom: DEFAULT_SCALE_VALUE,
scrollLeft: "0",
scrollTop: "0",
rotation: null,
sidebarView: SidebarView.UNKNOWN,
scrollMode: ScrollMode.UNKNOWN,
spreadMode: SpreadMode.UNKNOWN
}).catch(() => {});
firstPagePromise.then(pdfPage => {
this.loadingBar?.setWidth(this.appConfig.viewerContainer);
this._initializeAnnotationStorageCallbacks(pdfDocument);
Promise.all([animationStarted, storedPromise, pageLayoutPromise, pageModePromise, openActionPromise]).then(async ([timeStamp, stored, pageLayout, pageMode, openAction]) => {
const viewOnLoad = AppOptions.get("viewOnLoad");
this._initializePdfHistory({
fingerprint: pdfDocument.fingerprints[0],
viewOnLoad,
initialDest: openAction?.dest
});
const initialBookmark = this.initialBookmark;
const zoom = AppOptions.get("defaultZoomValue");
let hash = zoom ? `zoom=${zoom}` : null;
let rotation = null;
let sidebarView = AppOptions.get("sidebarViewOnLoad");
let scrollMode = AppOptions.get("scrollModeOnLoad");
let spreadMode = AppOptions.get("spreadModeOnLoad");
if (stored?.page && viewOnLoad !== ViewOnLoad.INITIAL) {
hash = `page=${stored.page}&zoom=${zoom || stored.zoom},` + `${stored.scrollLeft},${stored.scrollTop}`;
rotation = parseInt(stored.rotation, 10);
if (sidebarView === SidebarView.UNKNOWN) {
sidebarView = stored.sidebarView | 0;
}
if (scrollMode === ScrollMode.UNKNOWN) {
scrollMode = stored.scrollMode | 0;
}
if (spreadMode === SpreadMode.UNKNOWN) {
spreadMode = stored.spreadMode | 0;
}
}
if (pageMode && sidebarView === SidebarView.UNKNOWN) {
sidebarView = apiPageModeToSidebarView(pageMode);
}
if (pageLayout && scrollMode === ScrollMode.UNKNOWN && spreadMode === SpreadMode.UNKNOWN) {
const modes = apiPageLayoutToViewerModes(pageLayout);
spreadMode = modes.spreadMode;
}
this.setInitialView(hash, {
rotation,
sidebarView,
scrollMode,
spreadMode
});
this.eventBus.dispatch("documentinit", {
source: this
});
if (!this.isViewerEmbedded) {
pdfViewer.focus();
}
await Promise.race([pagesPromise, new Promise(resolve => {
setTimeout(resolve, FORCE_PAGES_LOADED_TIMEOUT);
})]);
if (!initialBookmark && !hash) {
return;
}
if (pdfViewer.hasEqualPageSizes) {
return;
}
this.initialBookmark = initialBookmark;
pdfViewer.currentScaleValue = pdfViewer.currentScaleValue;
this.setInitialView(hash);
}).catch(() => {
this.setInitialView();
}).then(function () {
pdfViewer.update();
});
});
pagesPromise.then(() => {
this._unblockDocumentLoadEvent();
this._initializeAutoPrint(pdfDocument, openActionPromise);
}, reason => {
this._documentError("pdfjs-loading-error", {
message: reason.message
});
});
onePageRendered.then(data => {
this.externalServices.reportTelemetry({
type: "pageInfo",
timestamp: data.timestamp
});
if (this.pdfOutlineViewer) {
pdfDocument.getOutline().then(outline => {
if (pdfDocument !== this.pdfDocument) {
return;
}
this.pdfOutlineViewer.render({
outline,
pdfDocument
});
});
}
if (this.pdfAttachmentViewer) {
pdfDocument.getAttachments().then(attachments => {
if (pdfDocument !== this.pdfDocument) {
return;
}
this.pdfAttachmentViewer.render({
attachments
});
});
}
if (this.pdfLayerViewer) {
pdfViewer.optionalContentConfigPromise.then(optionalContentConfig => {
if (pdfDocument !== this.pdfDocument) {
return;
}
this.pdfLayerViewer.render({
optionalContentConfig,
pdfDocument
});
});
}
});
this._initializePageLabels(pdfDocument);
this._initializeMetadata(pdfDocument);
},
async _scriptingDocProperties(pdfDocument) {
if (!this.documentInfo) {
await new Promise(resolve => {
this.eventBus._on("metadataloaded", resolve, {
once: true
});
});
if (pdfDocument !== this.pdfDocument) {
return null;
}
}
if (!this._contentLength) {
await new Promise(resolve => {
this.eventBus._on("documentloaded", resolve, {
once: true
});
});
if (pdfDocument !== this.pdfDocument) {
return null;
}
}
return {
...this.documentInfo,
baseURL: this.baseUrl,
filesize: this._contentLength,
filename: this._docFilename,
metadata: this.metadata?.getRaw(),
authors: this.metadata?.get("dc:creator"),
numPages: this.pagesCount,
URL: this.url
};
},
async _initializeAutoPrint(pdfDocument, openActionPromise) {
const [openAction, jsActions] = await Promise.all([openActionPromise, this.pdfViewer.enableScripting ? null : pdfDocument.getJSActions()]);
if (pdfDocument !== this.pdfDocument) {
return;
}
let triggerAutoPrint = openAction?.action === "Print";
if (jsActions) {
console.warn("Warning: JavaScript support is not enabled");
for (const name in jsActions) {
if (triggerAutoPrint) {
break;
}
switch (name) {
case "WillClose":
case "WillSave":
case "DidSave":
case "WillPrint":
case "DidPrint":
continue;
}
triggerAutoPrint = jsActions[name].some(js => AutoPrintRegExp.test(js));
}
}
if (triggerAutoPrint) {
this.triggerPrinting();
}
},
async _initializeMetadata(pdfDocument) {
const {
info,
metadata,
contentDispositionFilename,
contentLength
} = await pdfDocument.getMetadata();
if (pdfDocument !== this.pdfDocument) {
return;
}
this.documentInfo = info;
this.metadata = metadata;
this._contentDispositionFilename ??= contentDispositionFilename;
this._contentLength ??= contentLength;
console.log(`PDF ${pdfDocument.fingerprints[0]} [${info.PDFFormatVersion} ` + `${(info.Producer || "-").trim()} / ${(info.Creator || "-").trim()}] ` + `(PDF.js: ${version || "?"} [${build || "?"}])`);
let pdfTitle = info.Title;
const metadataTitle = metadata?.get("dc:title");
if (metadataTitle) {
if (metadataTitle !== "Untitled" && !/[\uFFF0-\uFFFF]/g.test(metadataTitle)) {
pdfTitle = metadataTitle;
}
}
if (pdfTitle) {
this.setTitle(`${pdfTitle} - ${this._contentDispositionFilename || this._title}`);
} else if (this._contentDispositionFilename) {
this.setTitle(this._contentDispositionFilename);
}
if (info.IsXFAPresent && !info.IsAcroFormPresent && !pdfDocument.isPureXfa) {
if (pdfDocument.loadingParams.enableXfa) {
console.warn("Warning: XFA Foreground documents are not supported");
} else {
console.warn("Warning: XFA support is not enabled");
}
} else if ((info.IsAcroFormPresent || info.IsXFAPresent) && !this.pdfViewer.renderForms) {
console.warn("Warning: Interactive form support is not enabled");
}
if (info.IsSignaturesPresent) {
console.warn("Warning: Digital signatures validation is not supported");
}
this.eventBus.dispatch("metadataloaded", {
source: this
});
},
async _initializePageLabels(pdfDocument) {
const labels = await pdfDocument.getPageLabels();
if (pdfDocument !== this.pdfDocument) {
return;
}
if (!labels || AppOptions.get("disablePageLabels")) {
return;
}
const numLabels = labels.length;
let standardLabels = 0,
emptyLabels = 0;
for (let i = 0; i < numLabels; i++) {
const label = labels[i];
if (label === (i + 1).toString()) {
standardLabels++;
} else if (label === "") {
emptyLabels++;
} else {
break;
}
}
if (standardLabels >= numLabels || emptyLabels >= numLabels) {
return;
}
const {
pdfViewer,
pdfThumbnailViewer,
toolbar
} = this;
pdfViewer.setPageLabels(labels);
pdfThumbnailViewer?.setPageLabels(labels);
toolbar?.setPagesCount(numLabels, true);
toolbar?.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
},
_initializePdfHistory({
fingerprint,
viewOnLoad,
initialDest = null
}) {
if (!this.pdfHistory) {
return;
}
this.pdfHistory.initialize({
fingerprint,
resetHistory: viewOnLoad === ViewOnLoad.INITIAL,
updateUrl: AppOptions.get("historyUpdateUrl")
});
if (this.pdfHistory.initialBookmark) {
this.initialBookmark = this.pdfHistory.initialBookmark;
this.initialRotation = this.pdfHistory.initialRotation;
}
if (initialDest && !this.initialBookmark && viewOnLoad === ViewOnLoad.UNKNOWN) {
this.initialBookmark = JSON.stringify(initialDest);
this.pdfHistory.push({
explicitDest: initialDest,
pageNumber: null
});
}
},
_initializeAnnotationStorageCallbacks(pdfDocument) {
if (pdfDocument !== this.pdfDocument) {
return;
}
const {
annotationStorage
} = pdfDocument;
annotationStorage.onSetModified = () => {
window.addEventListener("beforeunload", beforeUnload);
};
annotationStorage.onResetModified = () => {
window.removeEventListener("beforeunload", beforeUnload);
};
annotationStorage.onAnnotationEditor = typeStr => {
this._hasAnnotationEditors = !!typeStr;
this.setTitle();
};
},
setInitialView(storedHash, {
rotation,
sidebarView,
scrollMode,
spreadMode
} = {}) {
const setRotation = angle => {
if (isValidRotation(angle)) {
this.pdfViewer.pagesRotation = angle;
}
};
const setViewerModes = (scroll, spread) => {
if (isValidScrollMode(scroll)) {
this.pdfViewer.scrollMode = scroll;
}
if (isValidSpreadMode(spread)) {
this.pdfViewer.spreadMode = spread;
}
};
this.isInitialViewSet = true;
this.pdfSidebar?.setInitialView(sidebarView);
setViewerModes(scrollMode, spreadMode);
if (this.initialBookmark) {
setRotation(this.initialRotation);
delete this.initialRotation;
this.pdfLinkService.setHash(this.initialBookmark);
this.initialBookmark = null;
} else if (storedHash) {
setRotation(rotation);
this.pdfLinkService.setHash(storedHash);
}
this.toolbar?.setPageNumber(this.pdfViewer.currentPageNumber, this.pdfViewer.currentPageLabel);
this.secondaryToolbar?.setPageNumber(this.pdfViewer.currentPageNumber);
if (!this.pdfViewer.currentScaleValue) {
this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
}
},
_cleanup() {
if (!this.pdfDocument) {
return;
}
this.pdfViewer.cleanup();
this.pdfThumbnailViewer?.cleanup();
this.pdfDocument.cleanup(AppOptions.get("fontExtraProperties"));
},
forceRendering() {
this.pdfRenderingQueue.printing = !!this.printService;
this.pdfRenderingQueue.isThumbnailViewEnabled = this.pdfSidebar?.visibleView === SidebarView.THUMBS;
this.pdfRenderingQueue.renderHighestPriority();
},
beforePrint() {
this._printAnnotationStoragePromise = this.pdfScriptingManager.dispatchWillPrint().catch(() => {}).then(() => this.pdfDocument?.annotationStorage.print);
if (this.printService) {
return;
}
if (!this.supportsPrinting) {
this._otherError("pdfjs-printing-not-supported");
return;
}
if (!this.pdfViewer.pageViewsReady) {
this.l10n.get("pdfjs-printing-not-ready").then(msg => {
window.alert(msg);
});
return;
}
this.printService = PDFPrintServiceFactory.createPrintService({
pdfDocument: this.pdfDocument,
pagesOverview: this.pdfViewer.getPagesOverview(),
printContainer: this.appConfig.printContainer,
printResolution: AppOptions.get("printResolution"),
printAnnotationStoragePromise: this._printAnnotationStoragePromise
});
this.forceRendering();
this.setTitle();
this.printService.layout();
if (this._hasAnnotationEditors) {
this.externalServices.reportTelemetry({
type: "editing",
data: {
type: "print",
stats: this.pdfDocument?.annotationStorage.editorStats
}
});
}
},
afterPrint() {
if (this._printAnnotationStoragePromise) {
this._printAnnotationStoragePromise.then(() => {
this.pdfScriptingManager.dispatchDidPrint();
});
this._printAnnotationStoragePromise = null;
}
if (this.printService) {
this.printService.destroy();
this.printService = null;
this.pdfDocument?.annotationStorage.resetModified();
}
this.forceRendering();
this.setTitle();
},
rotatePages(delta) {
this.pdfViewer.pagesRotation += delta;
},
requestPresentationMode() {
this.pdfPresentationMode?.request();
},
triggerPrinting() {
if (this.supportsPrinting) {
window.print();
}
},
bindEvents() {
if (this._eventBusAbortController) {
return;
}
const ac = this._eventBusAbortController = new AbortController();
const opts = {
signal: ac.signal
};
const {
eventBus,
externalServices,
pdfDocumentProperties,
pdfViewer,
preferences
} = this;
eventBus._on("resize", onResize.bind(this), opts);
eventBus._on("hashchange", onHashchange.bind(this), opts);
eventBus._on("beforeprint", this.beforePrint.bind(this), opts);
eventBus._on("afterprint", this.afterPrint.bind(this), opts);
eventBus._on("pagerender", onPageRender.bind(this), opts);
eventBus._on("pagerendered", onPageRendered.bind(this), opts);
eventBus._on("updateviewarea", onUpdateViewarea.bind(this), opts);
eventBus._on("pagechanging", onPageChanging.bind(this), opts);
eventBus._on("scalechanging", onScaleChanging.bind(this), opts);
eventBus._on("rotationchanging", onRotationChanging.bind(this), opts);
eventBus._on("sidebarviewchanged", onSidebarViewChanged.bind(this), opts);
eventBus._on("pagemode", onPageMode.bind(this), opts);
eventBus._on("namedaction", onNamedAction.bind(this), opts);
eventBus._on("presentationmodechanged", evt => pdfViewer.presentationModeState = evt.state, opts);
eventBus._on("presentationmode", this.requestPresentationMode.bind(this), opts);
eventBus._on("switchannotationeditormode", evt => pdfViewer.annotationEditorMode = evt, opts);
eventBus._on("print", this.triggerPrinting.bind(this), opts);
eventBus._on("download", this.downloadOrSave.bind(this), opts);
eventBus._on("firstpage", () => this.page = 1, opts);
eventBus._on("lastpage", () => this.page = this.pagesCount, opts);
eventBus._on("nextpage", () => pdfViewer.nextPage(), opts);
eventBus._on("previouspage", () => pdfViewer.previousPage(), opts);
eventBus._on("zoomin", this.zoomIn.bind(this), opts);
eventBus._on("zoomout", this.zoomOut.bind(this), opts);
eventBus._on("zoomreset", this.zoomReset.bind(this), opts);
eventBus._on("pagenumberchanged", onPageNumberChanged.bind(this), opts);
eventBus._on("scalechanged", evt => pdfViewer.currentScaleValue = evt.value, opts);
eventBus._on("rotatecw", this.rotatePages.bind(this, 90), opts);
eventBus._on("rotateccw", this.rotatePages.bind(this, -90), opts);
eventBus._on("optionalcontentconfig", evt => pdfViewer.optionalContentConfigPromise = evt.promise, opts);
eventBus._on("switchscrollmode", evt => pdfViewer.scrollMode = evt.mode, opts);
eventBus._on("scrollmodechanged", onViewerModesChanged.bind(this, "scrollMode"), opts);
eventBus._on("switchspreadmode", evt => pdfViewer.spreadMode = evt.mode, opts);
eventBus._on("spreadmodechanged", onViewerModesChanged.bind(this, "spreadMode"), opts);
eventBus._on("imagealttextsettings", onImageAltTextSettings.bind(this), opts);
eventBus._on("documentproperties", () => pdfDocumentProperties?.open(), opts);
eventBus._on("findfromurlhash", onFindFromUrlHash.bind(this), opts);
eventBus._on("updatefindmatchescount", onUpdateFindMatchesCount.bind(this), opts);
eventBus._on("updatefindcontrolstate", onUpdateFindControlState.bind(this), opts);
eventBus._on("annotationeditorstateschanged", evt => externalServices.updateEditorStates(evt), opts);
eventBus._on("reporttelemetry", evt => externalServices.reportTelemetry(evt.details), opts);
eventBus._on("setpreference", evt => preferences.set(evt.name, evt.value), opts);
},
bindWindowEvents() {
if (this._windowAbortController) {
return;
}
this._windowAbortController = new AbortController();
const {
eventBus,
appConfig: {
mainContainer
},
pdfViewer,
_windowAbortController: {
signal
}
} = this;
function addWindowResolutionChange(evt = null) {
if (evt) {
pdfViewer.refresh();
}
const mediaQueryList = window.matchMedia(`(resolution: ${window.devicePixelRatio || 1}dppx)`);
mediaQueryList.addEventListener("change", addWindowResolutionChange, {
once: true,
signal
});
}
addWindowResolutionChange();
window.addEventListener("wheel", onWheel.bind(this), {
passive: false,
signal
});
window.addEventListener("touchstart", onTouchStart.bind(this), {
passive: false,
signal
});
window.addEventListener("touchmove", onTouchMove.bind(this), {
passive: false,
signal
});
window.addEventListener("touchend", onTouchEnd.bind(this), {
passive: false,
signal
});
window.addEventListener("click", onClick.bind(this), {
signal
});
window.addEventListener("keydown", onKeyDown.bind(this), {
signal
});
window.addEventListener("keyup", onKeyUp.bind(this), {
signal
});
window.addEventListener("resize", () => eventBus.dispatch("resize", {
source: window
}), {
signal
});
window.addEventListener("hashchange", () => {
eventBus.dispatch("hashchange", {
source: window,
hash: document.location.hash.substring(1)
});
}, {
signal
});
window.addEventListener("beforeprint", () => eventBus.dispatch("beforeprint", {
source: window
}), {
signal
});
window.addEventListener("afterprint", () => eventBus.dispatch("afterprint", {
source: window
}), {
signal
});
window.addEventListener("updatefromsandbox", evt => {
eventBus.dispatch("updatefromsandbox", {
source: window,
detail: evt.detail
});
}, {
signal
});
const scrollend = () => {
this._isScrolling = false;
mainContainer.addEventListener("scroll", scroll, {
passive: true,
signal
});
mainContainer.removeEventListener("scrollend", scrollend);
mainContainer.removeEventListener("blur", scrollend);
};
const scroll = () => {
if (this._isCtrlKeyDown) {
return;
}
mainContainer.removeEventListener("scroll", scroll);
this._isScrolling = true;
mainContainer.addEventListener("scrollend", scrollend, {
signal
});
mainContainer.addEventListener("blur", scrollend, {
signal
});
};
mainContainer.addEventListener("scroll", scroll, {
passive: true,
signal
});
},
unbindEvents() {
this._eventBusAbortController?.abort();
this._eventBusAbortController = null;
},
unbindWindowEvents() {
this._windowAbortController?.abort();
this._windowAbortController = null;
},
async testingClose() {
this.unbindEvents();
this.unbindWindowEvents();
this._globalAbortController?.abort();
this._globalAbortController = null;
this.findBar?.close();
await Promise.all([this.l10n?.destroy(), this.close()]);
},
_accumulateTicks(ticks, prop) {
if (this[prop] > 0 && ticks < 0 || this[prop] < 0 && ticks > 0) {
this[prop] = 0;
}
this[prop] += ticks;
const wholeTicks = Math.trunc(this[prop]);
this[prop] -= wholeTicks;
return wholeTicks;
},
_accumulateFactor(previousScale, factor, prop) {
if (factor === 1) {
return 1;
}
if (this[prop] > 1 && factor < 1 || this[prop] < 1 && factor > 1) {
this[prop] = 1;
}
const newFactor = Math.floor(previousScale * factor * this[prop] * 100) / (100 * previousScale);
this[prop] = factor / newFactor;
return newFactor;
},
_unblockDocumentLoadEvent() {
document.blockUnblockOnload?.(false);
this._unblockDocumentLoadEvent = () => {};
},
get scriptingReady() {
return this.pdfScriptingManager.ready;
}
};
initCom(PDFViewerApplication);
function onPageRender({
pageNumber
}) {
if (pageNumber === this.page) {
this.toolbar?.updateLoadingIndicatorState(true);
}
}
function onPageRendered({
pageNumber,
error
}) {
if (pageNumber === this.page) {
this.toolbar?.updateLoadingIndicatorState(false);
}
if (this.pdfSidebar?.visibleView === SidebarView.THUMBS) {
const pageView = this.pdfViewer.getPageView(pageNumber - 1);
const thumbnailView = this.pdfThumbnailViewer?.getThumbnail(pageNumber - 1);
if (pageView) {
thumbnailView?.setImage(pageView);
}
}
if (error) {
this._otherError("pdfjs-rendering-error", error);
}
}
function onPageMode({
mode
}) {
let view;
switch (mode) {
case "thumbs":
view = SidebarView.THUMBS;
break;
case "bookmarks":
case "outline":
view = SidebarView.OUTLINE;
break;
case "attachments":
view = SidebarView.ATTACHMENTS;
break;
case "layers":
view = SidebarView.LAYERS;
break;
case "none":
view = SidebarView.NONE;
break;
default:
console.error('Invalid "pagemode" hash parameter: ' + mode);
return;
}
this.pdfSidebar?.switchView(view, true);
}
function onNamedAction(evt) {
switch (evt.action) {
case "GoToPage":
this.appConfig.toolbar?.pageNumber.select();
break;
case "Find":
if (!this.supportsIntegratedFind) {
this.findBar?.toggle();
}
break;
case "Print":
this.triggerPrinting();
break;
case "SaveAs":
this.downloadOrSave();
break;
}
}
function onSidebarViewChanged({
view
}) {
this.pdfRenderingQueue.isThumbnailViewEnabled = view === SidebarView.THUMBS;
if (this.isInitialViewSet) {
this.store?.set("sidebarView", view).catch(() => {});
}
}
function onUpdateViewarea({
location
}) {
if (this.isInitialViewSet) {
this.store?.setMultiple({
page: location.pageNumber,
zoom: location.scale,
scrollLeft: location.left,
scrollTop: location.top,
rotation: location.rotation
}).catch(() => {});
}
if (this.appConfig.secondaryToolbar) {
this.appConfig.secondaryToolbar.viewBookmarkButton.href = this.pdfLinkService.getAnchorUrl(location.pdfOpenParams);
}
}
function onViewerModesChanged(name, evt) {
if (this.isInitialViewSet && !this.pdfViewer.isInPresentationMode) {
this.store?.set(name, evt.mode).catch(() => {});
}
}
function onResize() {
const {
pdfDocument,
pdfViewer,
pdfRenderingQueue
} = this;
if (pdfRenderingQueue.printing && window.matchMedia("print").matches) {
return;
}
if (!pdfDocument) {
return;
}
const currentScaleValue = pdfViewer.currentScaleValue;
if (currentScaleValue === "auto" || currentScaleValue === "page-fit" || currentScaleValue === "page-width") {
pdfViewer.currentScaleValue = currentScaleValue;
}
pdfViewer.update();
}
function onHashchange(evt) {
const hash = evt.hash;
if (!hash) {
return;
}
if (!this.isInitialViewSet) {
this.initialBookmark = hash;
} else if (!this.pdfHistory?.popStateInProgress) {
this.pdfLinkService.setHash(hash);
}
}
function onPageNumberChanged(evt) {
const {
pdfViewer
} = this;
if (evt.value !== "") {
this.pdfLinkService.goToPage(evt.value);
}
if (evt.value !== pdfViewer.currentPageNumber.toString() && evt.value !== pdfViewer.currentPageLabel) {
this.toolbar?.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
}
}
function onImageAltTextSettings() {
this.imageAltTextSettings?.open({
enableGuessAltText: AppOptions.get("enableGuessAltText"),
enableNewAltTextWhenAddingImage: AppOptions.get("enableNewAltTextWhenAddingImage")
});
}
function onFindFromUrlHash(evt) {
this.eventBus.dispatch("find", {
source: evt.source,
type: "",
query: evt.query,
caseSensitive: false,
entireWord: false,
highlightAll: true,
findPrevious: false,
matchDiacritics: true
});
}
function onUpdateFindMatchesCount({
matchesCount
}) {
if (this.supportsIntegratedFind) {
this.externalServices.updateFindMatchesCount(matchesCount);
} else {
this.findBar?.updateResultsCount(matchesCount);
}
}
function onUpdateFindControlState({
state,
previous,
entireWord,
matchesCount,
rawQuery
}) {
if (this.supportsIntegratedFind) {
this.externalServices.updateFindControlState({
result: state,
findPrevious: previous,
entireWord,
matchesCount,
rawQuery
});
} else {
this.findBar?.updateUIState(state, previous, matchesCount);
}
}
function onScaleChanging(evt) {
this.toolbar?.setPageScale(evt.presetValue, evt.scale);
this.pdfViewer.update();
}
function onRotationChanging(evt) {
if (this.pdfThumbnailViewer) {
this.pdfThumbnailViewer.pagesRotation = evt.pagesRotation;
}
this.forceRendering();
this.pdfViewer.currentPageNumber = evt.pageNumber;
}
function onPageChanging({
pageNumber,
pageLabel
}) {
this.toolbar?.setPageNumber(pageNumber, pageLabel);
this.secondaryToolbar?.setPageNumber(pageNumber);
if (this.pdfSidebar?.visibleView === SidebarView.THUMBS) {
this.pdfThumbnailViewer?.scrollThumbnailIntoView(pageNumber);
}
const currentPage = this.pdfViewer.getPageView(pageNumber - 1);
this.toolbar?.updateLoadingIndicatorState(currentPage?.renderingState === RenderingStates.RUNNING);
}
function onWheel(evt) {
const {
pdfViewer,
supportsMouseWheelZoomCtrlKey,
supportsMouseWheelZoomMetaKey,
supportsPinchToZoom
} = this;
if (pdfViewer.isInPresentationMode) {
return;
}
const deltaMode = evt.deltaMode;
let scaleFactor = Math.exp(-evt.deltaY / 100);
const isBuiltInMac = FeatureTest.platform.isMac;
const isPinchToZoom = evt.ctrlKey && !this._isCtrlKeyDown && deltaMode === WheelEvent.DOM_DELTA_PIXEL && evt.deltaX === 0 && (Math.abs(scaleFactor - 1) < 0.05 || isBuiltInMac) && evt.deltaZ === 0;
const origin = [evt.clientX, evt.clientY];
if (isPinchToZoom || evt.ctrlKey && supportsMouseWheelZoomCtrlKey || evt.metaKey && supportsMouseWheelZoomMetaKey) {
evt.preventDefault();
if (this._isScrolling || document.visibilityState === "hidden" || this.overlayManager.active) {
return;
}
if (isPinchToZoom && supportsPinchToZoom) {
scaleFactor = this._accumulateFactor(pdfViewer.currentScale, scaleFactor, "_wheelUnusedFactor");
this.updateZoom(null, scaleFactor, origin);
} else {
const delta = normalizeWheelEventDirection(evt);
let ticks = 0;
if (deltaMode === WheelEvent.DOM_DELTA_LINE || deltaMode === WheelEvent.DOM_DELTA_PAGE) {
ticks = Math.abs(delta) >= 1 ? Math.sign(delta) : this._accumulateTicks(delta, "_wheelUnusedTicks");
} else {
const PIXELS_PER_LINE_SCALE = 30;
ticks = this._accumulateTicks(delta / PIXELS_PER_LINE_SCALE, "_wheelUnusedTicks");
}
this.updateZoom(ticks, null, origin);
}
}
}
function onTouchStart(evt) {
if (this.pdfViewer.isInPresentationMode || evt.touches.length < 2) {
return;
}
evt.preventDefault();
if (evt.touches.length !== 2 || this.overlayManager.active) {
this._touchInfo = null;
return;
}
let [touch0, touch1] = evt.touches;
if (touch0.identifier > touch1.identifier) {
[touch0, touch1] = [touch1, touch0];
}
this._touchInfo = {
touch0X: touch0.screenX,
touch0Y: touch0.screenY,
touch1X: touch1.screenX,
touch1Y: touch1.screenY
};
}
function onTouchMove(evt) {
if (!this._touchInfo || evt.touches.length !== 2) {
return;
}
const {
pdfViewer,
_touchInfo,
supportsPinchToZoom
} = this;
let [touch0, touch1] = evt.touches;
if (touch0.identifier > touch1.identifier) {
[touch0, touch1] = [touch1, touch0];
}
const {
screenX: screen0X,
screenY: screen0Y
} = touch0;
const {
screenX: screen1X,
screenY: screen1Y
} = touch1;
const {
touch0X: pTouch0X,
touch0Y: pTouch0Y,
touch1X: pTouch1X,
touch1Y: pTouch1Y
} = _touchInfo;
const prevGapX = pTouch1X - pTouch0X;
const prevGapY = pTouch1Y - pTouch0Y;
const currGapX = screen1X - screen0X;
const currGapY = screen1Y - screen0Y;
const distance = Math.hypot(currGapX, currGapY) || 1;
const pDistance = Math.hypot(prevGapX, prevGapY) || 1;
if (!this._isPinching && Math.abs(pDistance - distance) <= MIN_TOUCH_DISTANCE_TO_PINCH) {
return;
}
_touchInfo.touch0X = screen0X;
_touchInfo.touch0Y = screen0Y;
_touchInfo.touch1X = screen1X;
_touchInfo.touch1Y = screen1Y;
evt.preventDefault();
if (!this._isPinching) {
this._isPinching = true;
return;
}
const origin = [(screen0X + screen1X) / 2, (screen0Y + screen1Y) / 2];
if (supportsPinchToZoom) {
const newScaleFactor = this._accumulateFactor(pdfViewer.currentScale, distance / pDistance, "_touchUnusedFactor");
this.updateZoom(null, newScaleFactor, origin);
} else {
const PIXELS_PER_LINE_SCALE = 30;
const ticks = this._accumulateTicks((distance - pDistance) / PIXELS_PER_LINE_SCALE, "_touchUnusedTicks");
this.updateZoom(ticks, null, origin);
}
}
function onTouchEnd(evt) {
if (!this._touchInfo) {
return;
}
evt.preventDefault();
this._touchInfo = null;
this._touchUnusedTicks = 0;
this._touchUnusedFactor = 1;
this._isPinching = false;
}
function closeSecondaryToolbar(evt) {
if (!this.secondaryToolbar?.isOpen) {
return;
}
const appConfig = this.appConfig;
if (this.pdfViewer.containsElement(evt.target) || appConfig.toolbar?.container.contains(evt.target) && !appConfig.secondaryToolbar?.toggleButton.contains(evt.target)) {
this.secondaryToolbar.close();
}
}
function closeEditorUndoBar(evt) {
if (!this.editorUndoBar?.isOpen) {
return;
}
if (this.appConfig.secondaryToolbar?.toolbar.contains(evt.target)) {
this.editorUndoBar.hide();
}
}
function onClick(evt) {
closeSecondaryToolbar.call(this, evt);
closeEditorUndoBar.call(this, evt);
}
function onKeyUp(evt) {
if (evt.key === "Control") {
this._isCtrlKeyDown = false;
}
}
function onKeyDown(evt) {
this._isCtrlKeyDown = evt.key === "Control";
if (this.editorUndoBar?.isOpen && evt.keyCode !== 9 && evt.keyCode !== 16 && !((evt.keyCode === 13 || evt.keyCode === 32) && getActiveOrFocusedElement() === this.appConfig.editorUndoBar.undoButton)) {
this.editorUndoBar.hide();
}
if (this.overlayManager.active) {
return;
}
const {
eventBus,
pdfViewer
} = this;
const isViewerInPresentationMode = pdfViewer.isInPresentationMode;
let handled = false,
ensureViewerFocused = false;
const cmd = (evt.ctrlKey ? 1 : 0) | (evt.altKey ? 2 : 0) | (evt.shiftKey ? 4 : 0) | (evt.metaKey ? 8 : 0);
if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
switch (evt.keyCode) {
case 70:
if (!this.supportsIntegratedFind && !evt.shiftKey) {
this.findBar?.open();
handled = true;
}
break;
case 71:
if (!this.supportsIntegratedFind) {
const {
state
} = this.findController;
if (state) {
const newState = {
source: window,
type: "again",
findPrevious: cmd === 5 || cmd === 12
};
eventBus.dispatch("find", {
...state,
...newState
});
}
handled = true;
}
break;
case 61:
case 107:
case 187:
case 171:
this.zoomIn();
handled = true;
break;
case 173:
case 109:
case 189:
this.zoomOut();
handled = true;
break;
case 48:
case 96:
if (!isViewerInPresentationMode) {
setTimeout(() => {
this.zoomReset();
});
handled = false;
}
break;
case 38:
if (isViewerInPresentationMode || this.page > 1) {
this.page = 1;
handled = true;
ensureViewerFocused = true;
}
break;
case 40:
if (isViewerInPresentationMode || this.page < this.pagesCount) {
this.page = this.pagesCount;
handled = true;
ensureViewerFocused = true;
}
break;
}
}
if (cmd === 3 || cmd === 10) {
switch (evt.keyCode) {
case 80:
this.requestPresentationMode();
handled = true;
this.externalServices.reportTelemetry({
type: "buttons",
data: {
id: "presentationModeKeyboard"
}
});
break;
case 71:
if (this.appConfig.toolbar) {
this.appConfig.toolbar.pageNumber.select();
handled = true;
}
break;
}
}
if (handled) {
if (ensureViewerFocused && !isViewerInPresentationMode) {
pdfViewer.focus();
}
evt.preventDefault();
return;
}
const curElement = getActiveOrFocusedElement();
const curElementTagName = curElement?.tagName.toUpperCase();
if (curElementTagName === "INPUT" || curElementTagName === "TEXTAREA" || curElementTagName === "SELECT" || curElementTagName === "BUTTON" && (evt.keyCode === 13 || evt.keyCode === 32) || curElement?.isContentEditable) {
if (evt.keyCode !== 27) {
return;
}
}
if (cmd === 0) {
let turnPage = 0,
turnOnlyIfPageFit = false;
switch (evt.keyCode) {
case 38:
if (this.supportsCaretBrowsingMode) {
this.moveCaret(true, false);
handled = true;
break;
}
case 33:
if (pdfViewer.isVerticalScrollbarEnabled) {
turnOnlyIfPageFit = true;
}
turnPage = -1;
break;
case 8:
if (!isViewerInPresentationMode) {
turnOnlyIfPageFit = true;
}
turnPage = -1;
break;
case 37:
if (this.supportsCaretBrowsingMode) {
return;
}
if (pdfViewer.isHorizontalScrollbarEnabled) {
turnOnlyIfPageFit = true;
}
case 75:
case 80:
turnPage = -1;
break;
case 27:
if (this.secondaryToolbar?.isOpen) {
this.secondaryToolbar.close();
handled = true;
}
if (!this.supportsIntegratedFind && this.findBar?.opened) {
this.findBar.close();
handled = true;
}
break;
case 40:
if (this.supportsCaretBrowsingMode) {
this.moveCaret(false, false);
handled = true;
break;
}
case 34:
if (pdfViewer.isVerticalScrollbarEnabled) {
turnOnlyIfPageFit = true;
}
turnPage = 1;
break;
case 13:
case 32:
if (!isViewerInPresentationMode) {
turnOnlyIfPageFit = true;
}
turnPage = 1;
break;
case 39:
if (this.supportsCaretBrowsingMode) {
return;
}
if (pdfViewer.isHorizontalScrollbarEnabled) {
turnOnlyIfPageFit = true;
}
case 74:
case 78:
turnPage = 1;
break;
case 36:
if (isViewerInPresentationMode || this.page > 1) {
this.page = 1;
handled = true;
ensureViewerFocused = true;
}
break;
case 35:
if (isViewerInPresentationMode || this.page < this.pagesCount) {
this.page = this.pagesCount;
handled = true;
ensureViewerFocused = true;
}
break;
case 83:
this.pdfCursorTools?.switchTool(CursorTool.SELECT);
break;
case 72:
this.pdfCursorTools?.switchTool(CursorTool.HAND);
break;
case 82:
this.rotatePages(90);
break;
case 115:
this.pdfSidebar?.toggle();
break;
}
if (turnPage !== 0 && (!turnOnlyIfPageFit || pdfViewer.currentScaleValue === "page-fit")) {
if (turnPage > 0) {
pdfViewer.nextPage();
} else {
pdfViewer.previousPage();
}
handled = true;
}
}
if (cmd === 4) {
switch (evt.keyCode) {
case 13:
case 32:
if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== "page-fit") {
break;
}
pdfViewer.previousPage();
handled = true;
break;
case 38:
this.moveCaret(true, true);
handled = true;
break;
case 40:
this.moveCaret(false, true);
handled = true;
break;
case 82:
this.rotatePages(-90);
break;
}
}
if (!handled && !isViewerInPresentationMode) {
if (evt.keyCode >= 33 && evt.keyCode <= 40 || evt.keyCode === 32 && curElementTagName !== "BUTTON") {
ensureViewerFocused = true;
}
}
if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) {
pdfViewer.focus();
}
if (handled) {
evt.preventDefault();
}
}
function beforeUnload(evt) {
evt.preventDefault();
evt.returnValue = "";
return false;
}
;// ./web/viewer.js
const pdfjsVersion = "4.9.143";
const pdfjsBuild = "11ce57ac2";
const AppConstants = null;
window.PDFViewerApplication = PDFViewerApplication;
window.PDFViewerApplicationConstants = AppConstants;
window.PDFViewerApplicationOptions = AppOptions;
function getViewerConfiguration() {
return {
appContainer: document.body,
principalContainer: document.getElementById("mainContainer"),
mainContainer: document.getElementById("viewerContainer"),
viewerContainer: document.getElementById("viewer"),
toolbar: {
container: document.getElementById("toolbarContainer"),
numPages: document.getElementById("numPages"),
pageNumber: document.getElementById("pageNumber"),
scaleSelect: document.getElementById("scaleSelect"),
customScaleOption: document.getElementById("customScaleOption"),
previous: document.getElementById("previous"),
next: document.getElementById("next"),
zoomIn: document.getElementById("zoomInButton"),
zoomOut: document.getElementById("zoomOutButton"),
print: document.getElementById("printButton"),
editorFreeTextButton: document.getElementById("editorFreeTextButton"),
editorFreeTextParamsToolbar: document.getElementById("editorFreeTextParamsToolbar"),
editorHighlightButton: document.getElementById("editorHighlightButton"),
editorHighlightParamsToolbar: document.getElementById("editorHighlightParamsToolbar"),
editorHighlightColorPicker: document.getElementById("editorHighlightColorPicker"),
editorInkButton: document.getElementById("editorInkButton"),
editorInkParamsToolbar: document.getElementById("editorInkParamsToolbar"),
editorStampButton: document.getElementById("editorStampButton"),
editorStampParamsToolbar: document.getElementById("editorStampParamsToolbar"),
download: document.getElementById("downloadButton")
},
secondaryToolbar: {
toolbar: document.getElementById("secondaryToolbar"),
toggleButton: document.getElementById("secondaryToolbarToggleButton"),
presentationModeButton: document.getElementById("presentationMode"),
openFileButton: null,
printButton: document.getElementById("secondaryPrint"),
downloadButton: document.getElementById("secondaryDownload"),
viewBookmarkButton: document.getElementById("viewBookmark"),
firstPageButton: document.getElementById("firstPage"),
lastPageButton: document.getElementById("lastPage"),
pageRotateCwButton: document.getElementById("pageRotateCw"),
pageRotateCcwButton: document.getElementById("pageRotateCcw"),
cursorSelectToolButton: document.getElementById("cursorSelectTool"),
cursorHandToolButton: document.getElementById("cursorHandTool"),
scrollPageButton: document.getElementById("scrollPage"),
scrollVerticalButton: document.getElementById("scrollVertical"),
scrollHorizontalButton: document.getElementById("scrollHorizontal"),
scrollWrappedButton: document.getElementById("scrollWrapped"),
spreadNoneButton: document.getElementById("spreadNone"),
spreadOddButton: document.getElementById("spreadOdd"),
spreadEvenButton: document.getElementById("spreadEven"),
imageAltTextSettingsButton: document.getElementById("imageAltTextSettings"),
imageAltTextSettingsSeparator: document.getElementById("imageAltTextSettingsSeparator"),
documentPropertiesButton: document.getElementById("documentProperties")
},
sidebar: {
outerContainer: document.getElementById("outerContainer"),
sidebarContainer: document.getElementById("sidebarContainer"),
toggleButton: document.getElementById("sidebarToggleButton"),
resizer: document.getElementById("sidebarResizer"),
thumbnailButton: document.getElementById("viewThumbnail"),
outlineButton: document.getElementById("viewOutline"),
attachmentsButton: document.getElementById("viewAttachments"),
layersButton: document.getElementById("viewLayers"),
thumbnailView: document.getElementById("thumbnailView"),
outlineView: document.getElementById("outlineView"),
attachmentsView: document.getElementById("attachmentsView"),
layersView: document.getElementById("layersView"),
currentOutlineItemButton: document.getElementById("currentOutlineItem")
},
findBar: {
bar: document.getElementById("findbar"),
toggleButton: document.getElementById("viewFindButton"),
findField: document.getElementById("findInput"),
highlightAllCheckbox: document.getElementById("findHighlightAll"),
caseSensitiveCheckbox: document.getElementById("findMatchCase"),
matchDiacriticsCheckbox: document.getElementById("findMatchDiacritics"),
entireWordCheckbox: document.getElementById("findEntireWord"),
findMsg: document.getElementById("findMsg"),
findResultsCount: document.getElementById("findResultsCount"),
findPreviousButton: document.getElementById("findPreviousButton"),
findNextButton: document.getElementById("findNextButton")
},
passwordOverlay: {
dialog: document.getElementById("passwordDialog"),
label: document.getElementById("passwordText"),
input: document.getElementById("password"),
submitButton: document.getElementById("passwordSubmit"),
cancelButton: document.getElementById("passwordCancel")
},
documentProperties: {
dialog: document.getElementById("documentPropertiesDialog"),
closeButton: document.getElementById("documentPropertiesClose"),
fields: {
fileName: document.getElementById("fileNameField"),
fileSize: document.getElementById("fileSizeField"),
title: document.getElementById("titleField"),
author: document.getElementById("authorField"),
subject: document.getElementById("subjectField"),
keywords: document.getElementById("keywordsField"),
creationDate: document.getElementById("creationDateField"),
modificationDate: document.getElementById("modificationDateField"),
creator: document.getElementById("creatorField"),
producer: document.getElementById("producerField"),
version: document.getElementById("versionField"),
pageCount: document.getElementById("pageCountField"),
pageSize: document.getElementById("pageSizeField"),
linearized: document.getElementById("linearizedField")
}
},
altTextDialog: {
dialog: document.getElementById("altTextDialog"),
optionDescription: document.getElementById("descriptionButton"),
optionDecorative: document.getElementById("decorativeButton"),
textarea: document.getElementById("descriptionTextarea"),
cancelButton: document.getElementById("altTextCancel"),
saveButton: document.getElementById("altTextSave")
},
newAltTextDialog: {
dialog: document.getElementById("newAltTextDialog"),
title: document.getElementById("newAltTextTitle"),
descriptionContainer: document.getElementById("newAltTextDescriptionContainer"),
textarea: document.getElementById("newAltTextDescriptionTextarea"),
disclaimer: document.getElementById("newAltTextDisclaimer"),
learnMore: document.getElementById("newAltTextLearnMore"),
imagePreview: document.getElementById("newAltTextImagePreview"),
createAutomatically: document.getElementById("newAltTextCreateAutomatically"),
createAutomaticallyButton: document.getElementById("newAltTextCreateAutomaticallyButton"),
downloadModel: document.getElementById("newAltTextDownloadModel"),
downloadModelDescription: document.getElementById("newAltTextDownloadModelDescription"),
error: document.getElementById("newAltTextError"),
errorCloseButton: document.getElementById("newAltTextCloseButton"),
cancelButton: document.getElementById("newAltTextCancel"),
notNowButton: document.getElementById("newAltTextNotNow"),
saveButton: document.getElementById("newAltTextSave")
},
altTextSettingsDialog: {
dialog: document.getElementById("altTextSettingsDialog"),
createModelButton: document.getElementById("createModelButton"),
aiModelSettings: document.getElementById("aiModelSettings"),
learnMore: document.getElementById("altTextSettingsLearnMore"),
deleteModelButton: document.getElementById("deleteModelButton"),
downloadModelButton: document.getElementById("downloadModelButton"),
showAltTextDialogButton: document.getElementById("showAltTextDialogButton"),
altTextSettingsCloseButton: document.getElementById("altTextSettingsCloseButton"),
closeButton: document.getElementById("altTextSettingsCloseButton")
},
annotationEditorParams: {
editorFreeTextFontSize: document.getElementById("editorFreeTextFontSize"),
editorFreeTextColor: document.getElementById("editorFreeTextColor"),
editorInkColor: document.getElementById("editorInkColor"),
editorInkThickness: document.getElementById("editorInkThickness"),
editorInkOpacity: document.getElementById("editorInkOpacity"),
editorStampAddImage: document.getElementById("editorStampAddImage"),
editorFreeHighlightThickness: document.getElementById("editorFreeHighlightThickness"),
editorHighlightShowAll: document.getElementById("editorHighlightShowAll")
},
printContainer: document.getElementById("printContainer"),
editorUndoBar: {
container: document.getElementById("editorUndoBar"),
message: document.getElementById("editorUndoBarMessage"),
undoButton: document.getElementById("editorUndoBarUndoButton"),
closeButton: document.getElementById("editorUndoBarCloseButton")
}
};
}
function webViewerLoad() {
const config = getViewerConfiguration();
PDFViewerApplication.run(config);
}
document.blockUnblockOnload?.(true);
if (document.readyState === "interactive" || document.readyState === "complete") {
webViewerLoad();
} else {
document.addEventListener("DOMContentLoaded", webViewerLoad, true);
}
var __webpack_exports__PDFViewerApplication = __webpack_exports__.PDFViewerApplication;
var __webpack_exports__PDFViewerApplicationConstants = __webpack_exports__.PDFViewerApplicationConstants;
var __webpack_exports__PDFViewerApplicationOptions = __webpack_exports__.PDFViewerApplicationOptions;
export { __webpack_exports__PDFViewerApplication as PDFViewerApplication, __webpack_exports__PDFViewerApplicationConstants as PDFViewerApplicationConstants, __webpack_exports__PDFViewerApplicationOptions as PDFViewerApplicationOptions };