Source code
Revision control
Copy as Markdown
Other Tools
/* 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
"use strict";
/* exported waitForIFrameA11yReady, waitForIFrameUpdates, spawnTestStates, testVisibility */
// Load the shared-head file first.
Services.scriptloader.loadSubScript(
this
);
// Loading and common.js from accessible/tests/mochitest/ for all tests, as
// well as promisified-events.js.
/* import-globals-from ../../mochitest/states.js */
/* import-globals-from ../../mochitest/role.js */
loadScripts(
{ name: "common.js", dir: MOCHITESTS_DIR },
{ name: "promisified-events.js", dir: MOCHITESTS_DIR },
{ name: "role.js", dir: MOCHITESTS_DIR },
{ name: "states.js", dir: MOCHITESTS_DIR }
);
// This is another version of addA11yLoadEvent for fission.
async function waitForIFrameA11yReady(iFrameBrowsingContext) {
await SimpleTest.promiseFocus(window);
await SpecialPowers.spawn(iFrameBrowsingContext, [], () => {
return new Promise(resolve => {
function waitForDocLoad() {
SpecialPowers.executeSoon(() => {
const acc = SpecialPowers.Cc[
"@mozilla.org/accessibilityService;1"
].getService(SpecialPowers.Ci.nsIAccessibilityService);
const accDoc = acc.getAccessibleFor(content.document);
let state = {};
accDoc.getState(state, {});
if (state.value & SpecialPowers.Ci.nsIAccessibleStates.STATE_BUSY) {
SpecialPowers.executeSoon(waitForDocLoad);
return;
}
resolve();
}, 0);
}
waitForDocLoad();
});
});
}
// A utility function to make sure the information of scroll position or visible
// area changes reach to out-of-process iframes.
async function waitForIFrameUpdates() {
// Wait for two frames since the information is notified via asynchronous IPC
// calls.
await new Promise(resolve => requestAnimationFrame(resolve));
await new Promise(resolve => requestAnimationFrame(resolve));
}
// A utility function to test the state of |elementId| element in out-of-process
// |browsingContext|.
async function spawnTestStates(browsingContext, elementId, expectedStates) {
function testStates(id, expected, unexpected) {
const acc = SpecialPowers.Cc[
"@mozilla.org/accessibilityService;1"
].getService(SpecialPowers.Ci.nsIAccessibilityService);
const target = content.document.getElementById(id);
let state = {};
acc.getAccessibleFor(target).getState(state, {});
if (expected === 0) {
Assert.equal(state.value, expected);
} else {
Assert.ok(state.value & expected);
}
Assert.ok(!(state.value & unexpected));
}
await SpecialPowers.spawn(
browsingContext,
[elementId, expectedStates],
testStates
);
}
function testVisibility(acc, shouldBeOffscreen, shouldBeInvisible) {
const [states] = getStates(acc);
let looksGood = shouldBeOffscreen == ((states & STATE_OFFSCREEN) != 0);
looksGood &= shouldBeInvisible == ((states & STATE_INVISIBLE) != 0);
return looksGood;
}