| <!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> |
