<html>
<head>
<script src="../resources/js-test-pre.js"></script>

  <script>
    if (window.testRunner)
        testRunner.waitUntilDone();

    function buildAccessibilityTree(accessibilityObject, indent) {
        var str = "";
        for (var i = 0; i < indent; i++)
            str += "    ";
        str += accessibilityObject.role;
        str += " " + accessibilityObject.stringValue;

        if (accessibilityObject.role == '')
            str += accessibilityObject.allAttributes();

        str += "\n";
        document.getElementById("console").innerText += str;

        if (accessibilityObject.stringValue.indexOf('End of test') >= 0)
            return false;

        var count = accessibilityObject.childrenCount;
        for (var i = 0; i < count; ++i) {
            if (!buildAccessibilityTree(accessibilityObject.childAtIndex(i), indent + 1))
                return false;
        }

        return true;
    }

    function runTest()
    {
        description("This tests that deleting an iframe doesn't cause the accessibility cache to be destroyed and recreated.");

        if (window.accessibilityController) {
            window.root = accessibilityController.rootElement;
            window.body = root.childAtIndex(0);
            window.before = body.childAtIndex(0).childAtIndex(0);
            window.iframe = body.childAtIndex(1).childAtIndex(0);
            window.after = body.childAtIndex(2).childAtIndex(0);

            window.frameBody = window.iframe.childAtIndex(0);
            window.frameBodyRole = window.frameBody.role;
            window.frameGroup = window.frameBody.childAtIndex(0);
            window.frameGroupRole = window.frameGroup.role;
            window.frameButton = window.frameGroup.childAtIndex(0);
            window.frameButtonRole = window.frameButton.role;

            document.getElementById("console").innerText += "\nBefore:\n";
            buildAccessibilityTree(root, 0);

            // Remove the iframe.
            document.body.removeChild(document.getElementById("iframe"));

            window.newRoot = accessibilityController.rootElement;
            window.newBody = newRoot.childAtIndex(0);
            window.newBefore = newBody.childAtIndex(0).childAtIndex(0);
            window.newAfter = newBody.childAtIndex(1).childAtIndex(0);

            document.getElementById("console").innerText += "\nAfter:\n";
            buildAccessibilityTree(newRoot, 0);
            document.getElementById("console").innerText += "\n";

            // Make sure that the accessibility objects from the iframe's nodes
            // are now invalid by checking that their role is changed - this
            // is because they've been deleted.
            shouldBeFalse("frameBodyRole == frameBody.role");
            shouldBeFalse("frameGroupRole == frameGroup.role");
            shouldBeFalse("frameButtonRole == frameButton.role");

            // Make sure that the other nodes are unchanged.
            shouldBeTrue("root.isEqual(newRoot)");
            shouldBeTrue("body.isEqual(newBody)");
            shouldBeTrue("before.isEqual(newBefore)");
            shouldBeTrue("after.isEqual(newAfter)");
        }

        debug('<br /><span class="pass">TEST COMPLETE</span>');
        if (window.testRunner)
            testRunner.notifyDone();
    }
    
    window.addEventListener('load', function() {
        setTimeout(runTest, 10);
    }, false);
    
  </script>
</head>
<body>

<p>Before</p>

<iframe id="iframe" src="data:text/html,<body><button>Click me</button></body>"></iframe>

<p>After</p>

<p>End of test</p>

<p id="description"></p>
<div id="console"></div>

</body>
</html>