зеркало из https://github.com/mozilla/gecko-dev.git
52 строки
1.5 KiB
HTML
52 строки
1.5 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=882703
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-->
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<head>
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<meta charset="utf-8">
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<title>Media test: TextTrackList change event</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<p id="display"></p>
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<div id="content">
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</div>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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SimpleTest.waitForExplicitFinish();
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video = document.createElement("video");
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isnot(video.textTracks, null, "Video should have a list of TextTracks.");
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video.addTextTrack("subtitles", "", "");
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track = video.textTracks[0];
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video.textTracks.addEventListener("change", changed);
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is(track.mode, "hidden", "New TextTrack's mode should be hidden.");
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track.mode = "showing";
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// Bug882674: change the mode again to see if we receive only one
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// change event.
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track.mode = "hidden";
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var eventCount = 0;
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function changed(event) {
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eventCount++;
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is(eventCount, 1, "change event dispatched multiple times.");
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is(event.target, video.textTracks, "change event's target should be video.textTracks.");
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ok(event instanceof window.Event, "change event should be a simple event.");
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ok(!event.bubbles, "change event should not bubble.");
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ok(event.isTrusted, "change event should be trusted.");
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ok(!event.cancelable, "change event should not be cancelable.");
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// Delay the finish function call for testing the change event count.
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setTimeout(SimpleTest.finish, 0);
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}
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</script>
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</pre>
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</body>
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</html>
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