<!DOCTYPE html>
<script src="../../../resources/js-test-pre.js"></script>
<body>
<video src="../../content/CC+Subtitles.mov" style="position: absolute; left: 0; top: 0; width: 640px; height: 360px;" controls autoplay></video>
<script type="text/javascript">

window.jsTestIsAsync = true;

description(`This test checks that the tracks panel doesn't show any track as selected if all the text tracks for a media element are marked as "hidden".`);

const media = document.querySelector("video");
const shadowRoot = window.internals.shadowRoot(media);

media.addEventListener("play", () => {
    media.pause();

    shouldBecomeDifferent("shadowRoot.querySelector('button.tracks')", "null", () => {
        shouldBecomeDifferent("shadowRoot.querySelector('button.tracks').getBoundingClientRect().width", "0", runTest);
    });
});

async function runTest()
{
    // Start by making sure all tracks are marked as "hidden".
    Array.from(media.textTracks).forEach(track => track.mode = "hidden");

    // Next, bring up the tracks menu by clicking on the tracks button.
    await clickOnTracksButton();
    // Dump the state of the tracks menu for text tracks, which should show the first embedded text track as selected.
    dumpTextTracksListNodes("Initial state");

    finishTest();
}

function textTracksListNodes()
{
    return shadowRoot.querySelectorAll(".tracks-panel section:last-of-type > ul > li");
}

function dumpTextTracksListNodes(msg)
{
    debug("");
    debug(`=== ${msg} ===`);
    debug("");
    Array.from(textTracksListNodes()).forEach(li => debug(`${li.classList.contains("selected") ? "[x]" : "[-]"} ${li.textContent}`));
}

async function clickOnTracksButton()
{
    await new Promise(requestAnimationFrame);
    clickOnElement(shadowRoot.lastChild.querySelector("button.tracks"));
    await new Promise(requestAnimationFrame);
}

function clickOnElement(element)
{
    const bounds = element.getBoundingClientRect();
    eventSender.mouseMoveTo(bounds.left + 1, bounds.top + 1);
    eventSender.mouseDown();
    eventSender.mouseUp();
}

function finishTest()
{
    debug("");
    media.remove();
    finishJSTest();
}

</script>
<script src="../../../resources/js-test-post.js"></script>
</body>