| <!DOCTYPE html> |
| <title>TextTrack's addCue and removeCue</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| async_test(function(t) { |
| var video = document.createElement("video"); |
| var trackElement = document.createElement("track"); |
| |
| trackElement.onload = t.step_func_done(function() { |
| var cues = trackElement.track.cues; |
| // Test cues loaded from the file. |
| assert_equals(cues.length, 4); |
| assert_equals(cues.getCueById("1").startTime, 0); |
| assert_equals(cues[1].startTime, 31); |
| assert_equals(cues[2].startTime, 61); |
| assert_equals(cues.getCueById("4").startTime, 121); |
| assert_equals(cues.getCueById("junk"), null); |
| |
| // Create a new cue, check values. |
| var textCue = new VTTCue(33, 3.4, "Sausage?"); |
| assert_equals(textCue.track, null); |
| assert_equals(textCue.id, ""); |
| assert_equals(textCue.startTime, 33); |
| assert_equals(textCue.endTime, 3.4); |
| assert_equals(textCue.pauseOnExit, false); |
| assert_equals(textCue.vertical, ""); |
| assert_equals(textCue.snapToLines, true); |
| assert_equals(textCue.line, "auto"); |
| assert_equals(textCue.position, "auto"); |
| assert_equals(textCue.size, 100); |
| assert_equals(textCue.align, "center"); |
| |
| // Remove the unadded track, make sure it throws correctly. |
| assert_throws_dom("NotFoundError", function() { trackElement.track.removeCue(textCue); }); |
| |
| // Add the new cue to a track, make sure it is inserted correctly. |
| trackElement.track.addCue(textCue); |
| assert_equals(textCue.track, trackElement.track); |
| assert_equals(cues[1].startTime, 31); |
| assert_equals(cues[2].startTime, 33); |
| assert_equals(cues[3].startTime, 61); |
| |
| // create a new cue and add it to a track created with |
| // video.addTextTrack, make sure it is inserted correctly. |
| var newTrack = video.addTextTrack("subtitles", "French subtitles", "fr"); |
| newTrack.mode = "showing"; |
| var newCue = new VTTCue(0, 1, "Test!"); |
| newTrack.addCue(newCue); |
| assert_equals(newCue, newTrack.cues[0]) |
| assert_equals(newCue.track, newTrack); |
| assert_equals(newCue.id, ""); |
| assert_equals(newCue.startTime, 0); |
| assert_equals(newCue.endTime, 1); |
| assert_equals(newCue.pauseOnExit, false); |
| assert_equals(newCue.vertical, ""); |
| assert_equals(newCue.snapToLines, true); |
| assert_equals(newCue.line, "auto"); |
| assert_equals(newCue.position, "auto"); |
| assert_equals(newCue.size, 100); |
| assert_equals(newCue.align, "center"); |
| |
| trackElement.track.removeCue(textCue); |
| assert_equals(textCue.track, null); |
| assert_equals(cues[1].startTime, 31); |
| assert_equals(cues[2].startTime, 61); |
| |
| // Remove a cue added from the WebVTT file. |
| textCue = cues[2]; |
| trackElement.track.removeCue(textCue); |
| assert_equals(textCue.track, null); |
| assert_equals(cues[1].startTime, 31); |
| assert_equals(cues[2].startTime, 121); |
| |
| // Try to remove the cue again. |
| assert_throws_dom("NotFoundError", function() { trackElement.track.removeCue(textCue); }); |
| |
| // Add a cue before all the existing cues. |
| trackElement.track.addCue(new VTTCue(0, 31, "I am first")); |
| assert_equals(cues[0].startTime, 0); |
| assert_equals(cues[0].endTime, 31); |
| assert_equals(cues[1].startTime, 0); |
| assert_equals(cues[1].endTime, 30.5); |
| assert_equals(cues[2].startTime, 31); |
| }); |
| |
| trackElement.src = "resources/settings.vtt"; |
| trackElement.kind = "captions"; |
| trackElement.default = true; |
| video.appendChild(trackElement); |
| }); |
| </script> |
