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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="../js/resources/js-test-pre.js"></script>
<script src="resources/helper.js"></script>
<style>
#article {
    -webkit-flow-into: article;
    border: 2px solid black;
}
#region_1, #region_2{
    -webkit-flow-from: no_article;
    overflow: hidden;
    display: inline-block;
    vertical-align: top;
    margin: 10px;
}
.block {
   display: block;
}
#region_1, #region_2 { height:110px; width:200px; border: 1px solid red;}
</style>
</head>
<body>
<div id="article">
    <div>
        <div id="content" style="height: 200px; background-color: green;"></div>
    </div>
</div>

<div id="region_1"></div>
<div id="region_2"></div>

<script>

description("Tests the the NamedFlow object behavior as an EventTarget");

if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
window.jsTestIsAsync = true;
function flowContent(flowName) {
    var r = document.getElementById("region_1");
    r.style.webkitFlowFrom = flowName;
    r = document.getElementById("region_2");
    r.style.webkitFlowFrom = flowName;
}

function makeFlowNull() {
	shouldBeNonNull('getFlowByName("article")');

    var el = document.getElementById("region_1");
    el.style.webkitFlowFrom = "no_article";
    el = document.getElementById("region_2");
    el.style.webkitFlowFrom = "no_article";
    el = document.getElementById("article");
    el.style.webkitFlowInto = "no_article";
}

var recreated = false;
function makeFlowCreated() {
	shouldBeNull('getFlowByName("article")');
	gc();

    var el = document.getElementById("region_1");
    el.style.webkitFlowFrom = "article";
    el = document.getElementById("region_2");
    el.style.webkitFlowFrom = "article";
    el = document.getElementById("article");
    el.style.webkitFlowInto = "article";

    recreated = true;
}

var updatedCount = 0;
function finishTest() {
    shouldBe("updatedCount", "2");
    finishJSTest();
}

function flowThreadUpdated(event) {
	++updatedCount;
    shouldBeEqualToString("event.target.name", "article");

    if (updatedCount == 2) {
    	shouldBeTrue("recreated");
        event.target.removeEventListener("webkitregionoversetchange", flowThreadUpdated);
    	makeFlowNull();
        setTimeout("finishTest()", 200);
    	return;
    }

    makeFlowNull();
    shouldBeFalse("recreated");

    // Set a timeout so the event reference to the target is discarded
    setTimeout(makeFlowCreated, 10);
}

function startTest() {    
    var flowThread = getFlowByName("article");
    flowThread.addEventListener("webkitregionoversetchange", flowThreadUpdated);
    
    debug("Flow content");
    flowContent("article");
}

window.addEventListener("load", startTest);
</script>
</body>
</html>