LayoutTests/media/video-controls-captions.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <title>Test closed caption button toggling.</title>
     <script src=media-file.js></script>
     <script src=media-controls.js></script>
     <script src=video-test.js></script>
     <script>
         var captionsButtonElement;
         var captionsButtonCoordinates;
         var track;

         function addTextTrackThroughJS()
         {
             consoleWrite("");
             consoleWrite("** Add a text track through JS to the video element **");
             var t = video.addTextTrack('captions', 'English', 'en');
             t.addCue(new VTTCue(0.0, 10.0, 'Some random caption text'));
         }

         function addUnloadableHTMLTrackElement()
         {
             consoleWrite("");
             consoleWrite("** Add non-default text track through HTML with unloadable URI **");

             track = document.createElement("track");
             track.setAttribute("kind", "captions");
             track.setAttribute("srclang", "en");
             track.setAttribute("src", "invalid.vtt");

             track.addEventListener("error", trackError);

             video.appendChild(track);
             testExpected("track.readyState", HTMLTrackElement.NONE);
             testExpected("track.track.mode", "disabled");
             testExpected("video.textTracks.length", 1);
         }

         function removeHTMLTrackElement()
         {
             consoleWrite("");
             consoleWrite("** Remove DOM node representing the track element **");
             var htmlTrack = video.children[0];
             video.removeChild(htmlTrack);
         }

         function testClosedCaptionsButtonVisibility(expected)
         {
             try {
                 captionsButtonElement = mediaControlsElement(internals.shadowRoot(video).firstChild, "-webkit-media-controls-toggle-closed-captions-button");
                 captionsButtonCoordinates = mediaControlsButtonCoordinates(video, "toggle-closed-captions-button");
             } catch (exception) {
                 consoleWrite("Failed to find a closed captions button or its coordinates: " + exception);
                 if (expected)
                     failTest();
                 return;
             }

             consoleWrite("");
             if (expected == true) {
                 consoleWrite("** Caption button should be visible and enabled because we have a captions track.");
                 testExpected("captionsButtonCoordinates[0]", 0, ">");
                 testExpected("captionsButtonCoordinates[1]", 0, ">");
                 testExpected("captionsButtonElement.disabled", false);
             } else {
                 consoleWrite("** Caption button should not be visible as there are no caption tracks.");
                 testExpected("captionsButtonCoordinates[0]", 0, "<=");
                 testExpected("captionsButtonCoordinates[1]", 0, "<=");
             }
         }

         function startTest()
         {
             if (!window.eventSender) {
                 consoleWrite("No eventSender found.");
                 failTest();
             }

             findMediaElement();
             testClosedCaptionsButtonVisibility(true);

             consoleWrite("");
             consoleWrite("** The captions track should be listed in textTracks, but not yet loaded. **");
             testExpected("video.textTracks.length", 1);
             testExpected("video.textTracks[0].mode", "disabled");
             checkCaptionsDisplay();

             consoleWrite("");
             consoleWrite("** Captions track should load and captions should become visible after button is clicked **");
             clickCCButton();
         }

         function clickCCButton()
         {
             consoleWrite("*** Click the CC button.");
             eventSender.mouseMoveTo(captionsButtonCoordinates[0], captionsButtonCoordinates[1]);
             eventSender.mouseDown();
             eventSender.mouseUp();
         }

         function checkCaptionsDisplay()
         {
             // When no tracks are loaded, this should report no text track container,
             // when tracks are loaded but not visible, should report no cues visible,
             // when tracks are loaded and visible, should properly check the text.
             testExpected("textTrackDisplayElement(video, 'display').innerText", "Lorem");
         }

         function trackLoaded()
         {
             checkCaptionsDisplay();

             consoleWrite("");
             consoleWrite("** Captions should not be visible after button is clicked again **");
             clickCCButton();
             checkCaptionsDisplay();

             removeHTMLTrackElement();
             testClosedCaptionsButtonVisibility(false);

             addUnloadableHTMLTrackElement();
             testClosedCaptionsButtonVisibility(true);

             consoleWrite("");
             clickCCButton();
         }

         function trackError()
         {
             consoleWrite("** Track failed to load **");
             testClosedCaptionsButtonVisibility(false);

             addTextTrackThroughJS();
             testClosedCaptionsButtonVisibility(true);

             endTest();
         }


         function loaded()
         {
             findMediaElement();
             consoleWrite("Set the user language preference so that the track will be chosen when the CC button is clicked.");
             run("internals.setUserPreferredLanguages(['en'])");

             waitForEvent('canplaythrough', startTest);

             video.src = findMediaFile('video', 'content/counting');
         }
     </script>
 </head>
 <body onload="loaded()">
     <p>Tests that the closed captions button, when toggled, updates the text track display area.</p>
     <video controls >
         <track src="track/captions-webvtt/captions-fast.vtt" kind="captions" srclang="en" onload="trackLoaded()">
     </video>

 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>Test closed caption button toggling.</title>
	<script src=media-file.js></script>
	<script src=media-controls.js></script>
	<script src=video-test.js></script>
	<script>
	var captionsButtonElement;
	var captionsButtonCoordinates;
	var track;

	function addTextTrackThroughJS()
	{
	consoleWrite("");
	consoleWrite(" Add a text track through JS to the video element ");
	var t = video.addTextTrack('captions', 'English', 'en');
	t.addCue(new VTTCue(0.0, 10.0, 'Some random caption text'));
	}

	function addUnloadableHTMLTrackElement()
	{
	consoleWrite("");
	consoleWrite(" Add non-default text track through HTML with unloadable URI ");

	track = document.createElement("track");
	track.setAttribute("kind", "captions");
	track.setAttribute("srclang", "en");
	track.setAttribute("src", "invalid.vtt");

	track.addEventListener("error", trackError);

	video.appendChild(track);
	testExpected("track.readyState", HTMLTrackElement.NONE);
	testExpected("track.track.mode", "disabled");
	testExpected("video.textTracks.length", 1);
	}

	function removeHTMLTrackElement()
	{
	consoleWrite("");
	consoleWrite(" Remove DOM node representing the track element ");
	var htmlTrack = video.children[0];
	video.removeChild(htmlTrack);
	}

	function testClosedCaptionsButtonVisibility(expected)
	{
	try {
	captionsButtonElement = mediaControlsElement(internals.shadowRoot(video).firstChild, "-webkit-media-controls-toggle-closed-captions-button");
	captionsButtonCoordinates = mediaControlsButtonCoordinates(video, "toggle-closed-captions-button");
	} catch (exception) {
	consoleWrite("Failed to find a closed captions button or its coordinates: " + exception);
	if (expected)
	failTest();
	return;
	}

	consoleWrite("");
	if (expected == true) {
	consoleWrite("** Caption button should be visible and enabled because we have a captions track.");
	testExpected("captionsButtonCoordinates[0]", 0, ">");
	testExpected("captionsButtonCoordinates[1]", 0, ">");
	testExpected("captionsButtonElement.disabled", false);
	} else {
	consoleWrite("** Caption button should not be visible as there are no caption tracks.");
	testExpected("captionsButtonCoordinates[0]", 0, "<=");
	testExpected("captionsButtonCoordinates[1]", 0, "<=");
	}
	}

	function startTest()
	{
	if (!window.eventSender) {
	consoleWrite("No eventSender found.");
	failTest();
	}

	findMediaElement();
	testClosedCaptionsButtonVisibility(true);

	consoleWrite("");
	consoleWrite(" The captions track should be listed in textTracks, but not yet loaded. ");
	testExpected("video.textTracks.length", 1);
	testExpected("video.textTracks[0].mode", "disabled");
	checkCaptionsDisplay();

	consoleWrite("");
	consoleWrite(" Captions track should load and captions should become visible after button is clicked ");
	clickCCButton();
	}

	function clickCCButton()
	{
	consoleWrite("*** Click the CC button.");
	eventSender.mouseMoveTo(captionsButtonCoordinates[0], captionsButtonCoordinates[1]);
	eventSender.mouseDown();
	eventSender.mouseUp();
	}

	function checkCaptionsDisplay()
	{
	// When no tracks are loaded, this should report no text track container,
	// when tracks are loaded but not visible, should report no cues visible,
	// when tracks are loaded and visible, should properly check the text.
	testExpected("textTrackDisplayElement(video, 'display').innerText", "Lorem");
	}

	function trackLoaded()
	{
	checkCaptionsDisplay();

	consoleWrite("");
	consoleWrite(" Captions should not be visible after button is clicked again ");
	clickCCButton();
	checkCaptionsDisplay();

	removeHTMLTrackElement();
	testClosedCaptionsButtonVisibility(false);

	addUnloadableHTMLTrackElement();
	testClosedCaptionsButtonVisibility(true);

	consoleWrite("");
	clickCCButton();
	}

	function trackError()
	{
	consoleWrite(" Track failed to load ");
	testClosedCaptionsButtonVisibility(false);

	addTextTrackThroughJS();
	testClosedCaptionsButtonVisibility(true);

	endTest();
	}


	function loaded()
	{
	findMediaElement();
	consoleWrite("Set the user language preference so that the track will be chosen when the CC button is clicked.");
	run("internals.setUserPreferredLanguages(['en'])");

	waitForEvent('canplaythrough', startTest);

	video.src = findMediaFile('video', 'content/counting');
	}
	</script>
	</head>
	<body onload="loaded()">
	<p>Tests that the closed captions button, when toggled, updates the text track display area.</p>
	<video controls >
	<track src="track/captions-webvtt/captions-fast.vtt" kind="captions" srclang="en" onload="trackLoaded()">
	</video>

	</body>
	</html>