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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/**
* This module exports a provider that might show a tip when the user opens
* the newtab or starts an organic search with their default search engine.
*/
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
import {
UrlbarProvider,
UrlbarUtils,
} from "resource:///modules/UrlbarUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
AppMenuNotifications: "resource://gre/modules/AppMenuNotifications.sys.mjs",
DefaultBrowserCheck: "resource:///modules/BrowserGlue.sys.mjs",
LaterRun: "resource:///modules/LaterRun.sys.mjs",
SearchStaticData: "resource://gre/modules/SearchStaticData.sys.mjs",
UrlbarPrefs: "resource:///modules/UrlbarPrefs.sys.mjs",
UrlbarProviderTopSites: "resource:///modules/UrlbarProviderTopSites.sys.mjs",
UrlbarResult: "resource:///modules/UrlbarResult.sys.mjs",
setTimeout: "resource://gre/modules/Timer.sys.mjs",
});
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"cfrFeaturesUserPref",
"browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features",
true
);
// The possible tips to show. These names (except NONE) are used in the names
// of keys in the `urlbar.tips` keyed scalar telemetry (see telemetry.rst).
// Don't modify them unless you've considered that. If you do modify them or
// add new tips, then you are also adding new `urlbar.tips` keys and therefore
// need an expanded data collection review.
const TIPS = {
NONE: "",
ONBOARD: "searchTip_onboard",
REDIRECT: "searchTip_redirect",
};
ChromeUtils.defineLazyGetter(lazy, "SUPPORTED_ENGINES", () => {
// Converts a list of Google domains to a pipe separated string of escaped TLDs.
// [www.google.com, ..., www.google.co.uk] => "com|...|co\.uk"
const googleTLDs = lazy.SearchStaticData.getAlternateDomains("www.google.com")
.map(str => str.slice("www.google.".length).replaceAll(".", "\\."))
.join("|");
// This maps engine names to regexes matching their homepages. We show the
// redirect tip on these pages.
return new Map([
["Bing", { domainPath: /^www\.bing\.com\/$/ }],
[
"DuckDuckGo",
{
domainPath: /^(start\.)?duckduckgo\.com\/$/,
prohibitedSearchParams: ["q"],
},
],
[
"Google",
{
domainPath: new RegExp(`^www\.google\.(?:${googleTLDs})\/(webhp)?$`),
},
],
]);
});
// The maximum number of times we'll show a tip across all sessions.
const MAX_SHOWN_COUNT = 4;
// Amount of time to wait before showing a tip after selecting a tab or
// navigating to a page where we should show a tip.
const SHOW_TIP_DELAY_MS = 200;
// We won't show a tip if the browser has been updated in the past
// LAST_UPDATE_THRESHOLD_HOURS.
const LAST_UPDATE_THRESHOLD_HOURS = 24;
/**
* A provider that sometimes returns a tip result when the user visits the
* newtab page or their default search engine's homepage.
*/
class ProviderSearchTips extends UrlbarProvider {
constructor() {
super();
// Whether we should disable tips for the current browser session, for
// example because a tip was already shown.
this.disableTipsForCurrentSession = true;
for (let tip of Object.values(TIPS)) {
if (
tip &&
lazy.UrlbarPrefs.get(`tipShownCount.${tip}`) < MAX_SHOWN_COUNT
) {
this.disableTipsForCurrentSession = false;
break;
}
}
// Whether and what kind of tip we've shown in the current engagement.
this.showedTipTypeInCurrentEngagement = TIPS.NONE;
// Used to track browser windows we've seen.
this._seenWindows = new WeakSet();
}
/**
* Enum of the types of search tips.
*
* @returns {{ NONE: string; ONBOARD: string; REDIRECT: string; }}
*/
get TIP_TYPE() {
return TIPS;
}
get PRIORITY() {
// Search tips are prioritized over the Places and top sites providers.
return lazy.UrlbarProviderTopSites.PRIORITY + 1;
}
/**
* Unique name for the provider, used by the context to filter on providers.
* Not using a unique name will cause the newest registration to win.
*
* @returns {string}
*/
get name() {
return "UrlbarProviderSearchTips";
}
/**
* The type of the provider.
*
* @returns {UrlbarUtils.PROVIDER_TYPE}
*/
get type() {
return UrlbarUtils.PROVIDER_TYPE.PROFILE;
}
/**
* Whether this provider should be invoked for the given context.
* If this method returns false, the providers manager won't start a query
* with this provider, to save on resources.
*
* @returns {boolean} Whether this provider should be invoked for the search.
*/
isActive() {
return this.currentTip && lazy.cfrFeaturesUserPref;
}
/**
* Gets the provider's priority.
*
* @returns {number} The provider's priority for the given query.
*/
getPriority() {
return this.PRIORITY;
}
/**
* Starts querying. Extended classes should return a Promise resolved when the
* provider is done searching AND returning results.
*
* @param {UrlbarQueryContext} queryContext The query context object
* @param {Function} addCallback Callback invoked by the provider to add a new
* result. A UrlbarResult should be passed to it.
* @returns {Promise}
*/
async startQuery(queryContext, addCallback) {
let instance = this.queryInstance;
let tip = this.currentTip;
this.showedTipTypeInCurrentEngagement = this.currentTip;
this.currentTip = TIPS.NONE;
let defaultEngine = await Services.search.getDefault();
let icon = await defaultEngine.getIconURL();
if (instance != this.queryInstance) {
return;
}
let result = new lazy.UrlbarResult(
UrlbarUtils.RESULT_TYPE.TIP,
UrlbarUtils.RESULT_SOURCE.OTHER_LOCAL,
{
type: tip,
buttons: [{ l10n: { id: "urlbar-search-tips-confirm" } }],
icon,
}
);
switch (tip) {
case TIPS.ONBOARD:
result.heuristic = true;
result.payload.titleL10n = {
id: "urlbar-search-tips-onboard",
args: {
engineName: defaultEngine.name,
},
};
break;
case TIPS.REDIRECT:
result.heuristic = false;
result.payload.titleL10n = {
id: "urlbar-search-tips-redirect-2",
args: {
engineName: defaultEngine.name,
},
};
break;
}
Glean.urlbar.tips[`${tip}-shown`].add(1);
addCallback(this, result);
}
/**
* Called when the tip is selected.
*
* @param {UrlbarResult} result
* The result that was picked.
* @param {window} window
* The browser window in which the tip is being displayed.
*/
#pickResult(result, window) {
window.gURLBar.value = "";
window.gURLBar.setPageProxyState("invalid");
window.gURLBar.removeAttribute("suppress-focus-border");
window.gURLBar.focus();
// The user either clicked the tip's "Okay, Got It" button, or they clicked
// in the urlbar while the tip was showing. We treat both as the user's
// acknowledgment of the tip, and we don't show tips again in any session.
// Set the shown count to the max.
lazy.UrlbarPrefs.set(
`tipShownCount.${result.payload.type}`,
MAX_SHOWN_COUNT
);
}
onEngagement(queryContext, controller, details) {
this.#pickResult(details.result, controller.browserWindow);
}
onSearchSessionEnd() {
this.showedTipTypeInCurrentEngagement = TIPS.NONE;
}
/**
* Called from `onLocationChange` in browser.js.
*
* @param {window} window
* The browser window where the location change happened.
* @param {nsIURI} uri
* The URI being navigated to.
* @param {nsIWebProgress} webProgress
* The progress object, which can have event listeners added to it.
* @param {number} flags
* Load flags. See nsIWebProgressListener.idl for possible values.
*/
async onLocationChange(window, uri, webProgress, flags) {
let instance = (this._onLocationChangeInstance = {});
// If this is the first time we've seen this browser window, we take some
// precautions to avoid impacting ts_paint.
if (!this._seenWindows.has(window)) {
this._seenWindows.add(window);
// First, wait until MozAfterPaint is fired in the current content window.
await window.gBrowserInit.firstContentWindowPaintPromise;
if (instance != this._onLocationChangeInstance) {
return;
}
// Second, wait 500ms. ts_paint waits at most 500ms after MozAfterPaint
// before ending. We use XPCOM directly instead of Timer.sys.mjs to avoid the
// perf impact of loading Timer.sys.mjs, in case it's not already loaded.
await new Promise(resolve => {
let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
timer.initWithCallback(resolve, 500, Ci.nsITimer.TYPE_ONE_SHOT);
});
if (instance != this._onLocationChangeInstance) {
return;
}
}
// Ignore events that don't change the document. Google is known to do this.
if (
flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT ||
!webProgress.isTopLevel
) {
return;
}
// The UrlbarView is usually closed on location change when the input is
// blurred. Since we open the view to show the redirect tip without focusing
// the input, the view won't close in that case. We need to close it
// manually.
if (this.showedTipTypeInCurrentEngagement != TIPS.NONE) {
window.gURLBar.view.close();
}
// Check if we are supposed to show a tip for the current session.
if (
!lazy.cfrFeaturesUserPref ||
(this.disableTipsForCurrentSession &&
!lazy.UrlbarPrefs.get("searchTips.test.ignoreShowLimits"))
) {
return;
}
this._maybeShowTipForUrl(uri.spec, window).catch(ex =>
this.logger.error(ex)
);
}
/**
* Determines whether we should show a tip for the current tab, sets
* this.currentTip, and starts a search on an empty string.
*
* @param {string} urlStr
* The URL of the page being loaded, in string form.
* @param {window} window
* The browser window in which the tip is being displayed.
*/
async _maybeShowTipForUrl(urlStr, window) {
let instance = {};
this._maybeShowTipForUrlInstance = instance;
let ignoreShowLimits = lazy.UrlbarPrefs.get(
"searchTips.test.ignoreShowLimits"
);
// Determine which tip we should show for the tab. Do this check first
// before the others below. It has less of a performance impact than the
// others, so in the common case where the URL is not one we're interested
// in, we can return immediately.
let tip;
let isNewtab = ["about:newtab", "about:home"].includes(urlStr);
let isSearchHomepage = !isNewtab && (await isDefaultEngineHomepage(urlStr));
if (isNewtab) {
tip = TIPS.ONBOARD;
} else if (isSearchHomepage) {
tip = TIPS.REDIRECT;
} else {
// No tip.
return;
}
// If we've shown this type of tip the maximum number of times over all
// sessions, don't show it again.
let shownCount = lazy.UrlbarPrefs.get(`tipShownCount.${tip}`);
if (shownCount >= MAX_SHOWN_COUNT && !ignoreShowLimits) {
return;
}
// Don't show a tip if the browser has been updated recently.
let hoursSinceUpdate = Math.min(
lazy.LaterRun.hoursSinceInstall,
lazy.LaterRun.hoursSinceUpdate
);
if (hoursSinceUpdate < LAST_UPDATE_THRESHOLD_HOURS && !ignoreShowLimits) {
return;
}
// Start a search.
lazy.setTimeout(async () => {
if (this._maybeShowTipForUrlInstance != instance) {
return;
}
// We don't want to interrupt a user's typed query with a Search Tip.
// See bugs 1613662 and 1619547.
if (
window.gURLBar.getAttribute("pageproxystate") == "invalid" &&
window.gURLBar.value != ""
) {
return;
}
// Don't show a tip if the browser is already showing some other
// notification.
if (
(!ignoreShowLimits && (await isBrowserShowingNotification(window))) ||
this._maybeShowTipForUrlInstance != instance
) {
return;
}
// At this point, we're showing a tip.
this.disableTipsForCurrentSession = true;
// Store the new shown count.
lazy.UrlbarPrefs.set(`tipShownCount.${tip}`, shownCount + 1);
this.currentTip = tip;
window.gURLBar.search("", { focus: tip == TIPS.ONBOARD });
}, SHOW_TIP_DELAY_MS);
}
}
async function isBrowserShowingNotification(window) {
// urlbar view and notification box (info bar)
if (
window.gURLBar.view.isOpen ||
window.gNotificationBox.currentNotification ||
window.gBrowser.getNotificationBox().currentNotification
) {
return true;
}
// app menu notification doorhanger
if (
lazy.AppMenuNotifications.activeNotification &&
!lazy.AppMenuNotifications.activeNotification.dismissed &&
!lazy.AppMenuNotifications.activeNotification.options.badgeOnly
) {
return true;
}
// PopupNotifications (e.g. Tracking Protection, Identity Box Doorhangers)
if (window.PopupNotifications.isPanelOpen) {
return true;
}
// page action button panels
let pageActions = window.document.getElementById("page-action-buttons");
if (pageActions) {
for (let child of pageActions.childNodes) {
if (child.getAttribute("open") == "true") {
return true;
}
}
}
// toolbar button panels
let navbar = window.document.getElementById("nav-bar-customization-target");
for (let node of navbar.querySelectorAll("toolbarbutton")) {
if (node.getAttribute("open") == "true") {
return true;
}
}
// Other modals like spotlight messages or default browser prompt
// can be shown at startup
if (window.gDialogBox.isOpen) {
return true;
}
// On startup, the default browser check normally opens after the Search Tip.
// As a result, we can't check for the prompt's presence, but we can check if
// it plans on opening.
const willPrompt = await lazy.DefaultBrowserCheck.willCheckDefaultBrowser(
/* isStartupCheck */ false
);
if (willPrompt) {
return true;
}
return false;
}
/**
* Checks if the given URL is the homepage of the current default search engine.
* Returns false if the default engine is not listed in SUPPORTED_ENGINES.
*
* @param {string} urlStr
* The URL to check, in string form.
*
* @returns {boolean}
*/
async function isDefaultEngineHomepage(urlStr) {
let defaultEngine = await Services.search.getDefault();
if (!defaultEngine) {
return false;
}
let homepageMatches = lazy.SUPPORTED_ENGINES.get(defaultEngine.name);
if (!homepageMatches) {
return false;
}
// The URL object throws if the string isn't a valid URL.
let url;
try {
url = new URL(urlStr);
} catch (e) {
return false;
}
if (url.searchParams.has(homepageMatches.prohibitedSearchParams)) {
return false;
}
// Strip protocol and query params.
urlStr = url.hostname.concat(url.pathname);
return homepageMatches.domainPath.test(urlStr);
}
export var UrlbarProviderSearchTips = new ProviderSearchTips();