gecko-dev/dom/browser-element/mochitest/browserElement_FirstPaint.js

44 строки
1.2 KiB
JavaScript

/* Any copyright is dedicated to the public domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Bug 787378 - Add mozbrowserfirstpaint event.
"use strict";
SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.addPermission();
function runTest() {
var iframe = document.createElement('iframe');
SpecialPowers.wrap(iframe).mozbrowser = true;
var gotFirstPaint = false;
var gotFirstLocationChange = false;
iframe.addEventListener('mozbrowserfirstpaint', function(e) {
ok(!gotFirstPaint, "Got only one first paint.");
gotFirstPaint = true;
if (gotFirstLocationChange) {
iframe.src = browserElementTestHelpers.emptyPage1 + '?2';
}
});
iframe.addEventListener('mozbrowserlocationchange', function(e) {
if (e.detail == browserElementTestHelpers.emptyPage1) {
gotFirstLocationChange = true;
if (gotFirstPaint) {
iframe.src = browserElementTestHelpers.emptyPage1 + '?2';
}
}
else if (e.detail.endsWith('?2')) {
SimpleTest.finish();
}
});
document.body.appendChild(iframe);
iframe.src = browserElementTestHelpers.emptyPage1;
}
addEventListener('testready', runTest);