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<!DOCTYPE html>
<title>TextTrack mode attribute</title>
<meta name="timeout" content="long">
<script src="/common/media.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
<track src="resources/captions-fast.vtt" default>
<script>
async_test(function(t) {
var video = document.querySelector("video");
var track = document.querySelector("track");
if (track.readyState != HTMLTrackElement.LOADED) {
assert_not_equals(track.readyState, HTMLTrackElement.ERROR,
"track failed to load resource.");
track.onload = t.step_func(trackLoaded);
} else {
trackLoaded();
}
var cueCount = 0;
var textTrack;
function trackLoaded() {
textTrack = track.track;
// Test default attribute value.
assert_equals(textTrack.mode, "showing");
assert_equals(video.textTracks[0].mode, "showing");
// Set to bogus value, should return default.
var value = "bogus";
textTrack.mode = value;
assert_equals(textTrack.mode, "showing");
assert_equals(video.textTracks[0].mode, "showing");
// Set to numeric value (no longer supported), should return default.
textTrack.mode = 2;
assert_equals(textTrack.mode, "showing");
assert_equals(video.textTracks[0].mode, "showing");
// Set to known values.
setModeAndCheck("disabled");
video.src = getVideoURI("/media/test");
video.play();
// Wait for end of first cue (no events should fire while track is disabled).
video.ontimeupdate = () => {
if (video.currentTime > 0.4) {
testHiddenAndShowing();
video.ontimeupdate = null;
}
}
}
track.oncuechange = t.step_func(function(event) {
cueCount++;
// As the 'enter' and the 'exit' event would be fired for the second
// and the third cue, so there would be 4 times 'oncuechange' event.
if (cueCount == 4)
t.done();
});
function setModeAndCheck(value) {
textTrack.mode = value;
assert_equals(textTrack.mode, value);
assert_equals(video.textTracks[0].mode, value);
if (value == "disabled")
assert_equals(textTrack.cues, null);
}
function testHiddenAndShowing() {
setModeAndCheck("hidden");
setModeAndCheck("showing");
}
});
</script>
</video>
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