<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

        <script src=../media-file.js></script>
        <script src=../video-test.js></script>
        <script src=../media-controls.js></script>

        <script>
            async function seeked()
            {
                consoleWrite("<br>** Track should be visible, cue should be styled appropriately. **");
                testExpected("video.textTracks[0].mode", "showing");
                testExpected("getComputedStyle(textTrackDisplayElement(video, 'cue')).color", "rgb(0, 0, 255)");
                testExpected("getComputedStyle(textTrackDisplayElement(video, 'cue')).backgroundColor", "rgb(255, 255, 0)");

                consoleWrite("<br>** Remove the video from the document, add it back. **");
                run("video.parentNode.removeChild(video)");
                run("document.body.appendChild(video)");

                consoleWrite("<br>** Change caption display mode to generate a notification. **");
                run("setCaptionDisplayMode('ForcedOnly')");

                // The notification is sent asynchronously.
                consoleWrite("<br>** Track should not be visible. **");
                await testExpectedEventually("video.textTracks[0].mode", "disabled");

                consoleWrite("");
                endTest();
            }

            function canplaythrough()
            {
                consoleWrite("");
                run("video.currentTime = .5");
                consoleWrite("");
            }

            function loaded()
            {
                consoleWrite("");
                run("internals.setCaptionDisplayMode('AlwaysOn')");
                run("internals.setCaptionsStyleSheetOverride('video::cue { color: blue; background-color: yellow; }')");
                run("internals.settings.setShouldDisplayTrackKind('Captions', true)");

                findMediaElement();
                video.src = findMediaFile('video', '../content/test');
                waitForEvent('seeked', seeked);
                waitForEvent('canplaythrough', canplaythrough);
                consoleWrite("");
            }

        </script>
    </head>
    <body onload="loaded()">
        <span>Test that caption preferences change notifications work</span>
        <video controls >
            <track src="captions-webvtt/styling.vtt" kind="captions">
        </video>
    </body>
</html>