<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test-pre.js"></script>
<script src="../../resources/ui-helper.js"></script>
</head>
<body onload="setupTopLevel();">
<script>
var pageScrollPositionBefore;
var iframeTarget;
var iFrameScrollPositionBefore;
var selectTarget;
var selectTargetScrollPositionBefore;

function checkForScroll()
{
    // The IFrame should not have scrolled at all.
    var pageScrollPositionAfter = document.scrollingElement.scrollTop;
    if (pageScrollPositionAfter != pageScrollPositionAfter)
        testFailed("Page consumed wheel events.");
    else
        testPassed("Page did not receive wheel events.");

    var iFrameScrollPositionAfter = window.frames['target'].document.scrollingElement.scrollTop;
    if (iFrameScrollPositionBefore != iFrameScrollPositionAfter)
        testFailed("IFrame consumed wheel events.");
    else
        testPassed("IFrame did not receive wheel events.");

    var selectTargetScrollPositionAfter = selectTarget.scrollTop;
    if (selectTargetScrollPositionBefore != selectTargetScrollPositionAfter)
        testPassed("Select consumed wheel events.");
    else
        testFailed("Select did not receive wheel events.");

    finishJSTest();
    testRunner.notifyDone();
}

async function scrollTest()
{
    pageScrollPositionBefore = document.scrollingElement.scrollTop;
    iFrameScrollPositionBefore = window.frames['target'].document.scrollingElement.scrollTop;

    iframeTarget = document.getElementById('target');

    selectTarget = window.frames['target'].document.getElementById('selectTarget');
    selectTargetScrollPositionBefore = selectTarget.scrollTop;

    // Scroll the #source until we reach the #target.
    const startPosX = Math.round(selectTarget.offsetLeft) + 10;
    const startPosY = Math.round(selectTarget.offsetTop) + 10; // Slightly more than one wheel scroll away from the IFrame

    const events = [
        {
            type : "wheel",
            viewX : startPosX,
            viewY : startPosY,
            deltaY : -10,
            phase : "began"
        },
        {
            type : "wheel",
            deltaY : -10,
            phase : "changed"
        },
        {
            type : "wheel",
            deltaY : -10,
            phase : "changed"
        },
        {
            type : "wheel",
            phase : "ended"
        },
        {
            type : "wheel",
            deltaY : -10,
            momentumPhase : "began"
        },
        {
            type : "wheel",
            deltaY : -10,
            momentumPhase : "changed"
        },
        {
            type : "wheel",
            momentumPhase : "ended"
        }
    ];

    await UIHelper.mouseWheelSequence({ events: events });
    checkForScroll();
    // We should finish via the scroll event; this will fire in the case of failure when the page doesn't scroll.
}

function setupTopLevel()
{
    if (window.eventSender) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
        setTimeout(scrollTest, 0);
    } else {
        var messageLocation = document.getElementById('parent');
        var message = document.createElement('div');
        message.innerHTML = "<p>This test is better run under DumpRenderTree. To manually test it, place the mouse pointer<br/>"
            + "at the top of the page, and then use the mouse wheel or a two-finger swipe to scroll the<br/>"
            + "down past the iframe.<br/><br/>"
            + "The iframe should not scroll.</p>";
        messageLocation.appendChild(message);
    }
}

</script>
<div id="parent" style="height: 2000px;">
    <iframe id="target" name="target" height="500" width="600" src="resources/select_iframe.html"></iframe>
    </iframe>
</div>
<div id="console"></div>
<script>
description("Tests that iframe doesn't consume wheel events when scrolling a select in an iframe.");
</script>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>