gecko/dom/browser-element/mochitest/priority/test_Background.html

56 lines
1.6 KiB
HTML

<!DOCTYPE HTML>
<html>
<!--
Test that calling setVisible('false') on an iframe causes its visibility to
change.
-->
<head>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="../browserElementTestHelpers.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="application/javascript;version=1.7">
"use strict";
SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.addPermission();
browserElementTestHelpers.enableProcessPriorityManager();
function runTest() {
var iframe = document.createElement('iframe');
iframe.setAttribute('mozbrowser', true);
iframe.src = browserElementTestHelpers.emptyPage1;
var childID = null;
expectOnlyOneProcessCreated().then(function(chid) {
childID = chid;
}).then(function() {
return expectPriorityChange(childID, 'FOREGROUND');
}).then(function() {
return expectMozbrowserEvent(iframe, 'loadend');
}).then(function() {
var p = expectPriorityChange(childID, 'BACKGROUND');
// We wait until mozbrowserloadend before calling setVisible, because
// setVisible isn't available until mozbrowser has loaded. In practice, that
// means we can call setVisible once we've gotten /any/ mozbrowser event.
iframe.setVisible(false);
return p;
}).then(function() {
var p = expectPriorityChange(childID, 'FOREGROUND');
iframe.setVisible(true);
}).then(SimpleTest.finish);
document.body.appendChild(iframe);
}
addEventListener('testready', runTest);
</script>
</body>
</html>