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Bug 1585239 - Wait for accessibility document ready in iframe. r=surkov

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Differential Revision: https://phabricator.services.mozilla.com/D55067

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Hiroyuki Ikezoe 2019-12-02 09:50:29 +00:00
parent 8da4de5388
commit d1e6184f73
2 changed files with 31 additions and 2 deletions
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2
accessible/tests/browser/states/browser_offscreen_element_in_out_of_process_iframe.js
View File

@ -57,7 +57,7 @@ add_task(async function() {
// Setup an out-of-process iframe which is initially scrolled out.
const iframe = await SpecialPowers.spawn(browser, [iframeURL], setup);
await waitForIFrameUpdates();
await waitForIFrameA11yReady(iframe);
await spawnTestStates(
iframe,
"target",

31
accessible/tests/browser/states/head.js
View File

@ -4,7 +4,7 @@
"use strict";
/* exported waitForIFrameUpdates, spawnTestStates */
/* exported waitForIFrameA11yReady, waitForIFrameUpdates, spawnTestStates */
// Load the shared-head file first.
/* import-globals-from ../shared-head.js */
@ -20,6 +20,35 @@ loadScripts(
{ name: "promisified-events.js", dir: MOCHITESTS_DIR }
);
// This is another version of addA11yLoadEvent for fission.
async function waitForIFrameA11yReady(iFrameBrowsingContext) {
async function waitForReady() {
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();
});
}
await SimpleTest.promiseFocus(window);
await SpecialPowers.spawn(iFrameBrowsingContext, [], waitForReady);
}
// A utility function to make sure the information of scroll position or visible
// area changes reach to out-of-process iframes.
async function waitForIFrameUpdates() {