DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (1aeaa33a64f9)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=517851
-->
<head>
  <title>Test for Bug 517851</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=517851">Mozilla Bug 517851</a>
<p id="display"></p>
<div id="content" style="display: none">
  <iframe id="subframe"></iframe>
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 517851 **/
SimpleTest.waitForExplicitFinish();

addLoadEvent(function() {
window.handledCount = 0;
window.testReturnValue = false;
var target = document.createElement("div");
var target2 = $("subframe").contentDocument.body;
target.setAttribute("onerror", "++window.handledCount; return window.testReturnValue;");
target2.setAttribute("onerror", "++window.parent.handledCount; return window.parent.testReturnValue;");
target.setAttribute("onmouseover", "++window.handledCount; return window.testReturnValue;");
target.setAttribute("onbeforeunload", "++window.handledCount; return window.testReturnValue;");
target2.setAttribute("onbeforeunload", "++window.parent.handledCount; return window.parent.testReturnValue;");
target.setAttribute("onmousemove", "++window.handledCount; return window.testReturnValue;");                     

var e = new ErrorEvent("error", {bubbles: true, cancelable: true});
window.testReturnValue = true;
is(target.dispatchEvent(e), window.testReturnValue,
   "error event should not have reverse return value handling on div!");
is(handledCount, 1, "Wrong event count!");
window.testReturnValue = false;
is(target.dispatchEvent(e), window.testReturnValue,
   "error event should not have reverse return value handling on div (2)!");
is(handledCount, 2, "Wrong event count!");

var e = new ErrorEvent("error", {bubbles: true, cancelable: true});
window.testReturnValue = false;
is(target2.dispatchEvent(e), !window.testReturnValue,
   "error event should have reverse return value handling!");
is(handledCount, 3, "Wrong event count!");
window.testReturnValue = true;
is(target2.dispatchEvent(e), !window.testReturnValue,
   "error event should have reverse return value handling (2)!");
is(handledCount, 4, "Wrong event count!");

e = document.createEvent("MouseEvent");
e.initEvent("mouseover", true, true);
window.testReturnValue = true;
is(target.dispatchEvent(e), window.testReturnValue,
   "mouseover event should not have reverse return value handling!");
is(handledCount, 5, "Wrong event count!");
window.testReturnValue = false;
is(target.dispatchEvent(e), window.testReturnValue,
   "mouseover event should not have reverse return value handling (2)!");
is(handledCount, 6, "Wrong event count!");

e = document.createEvent("BeforeUnloadEvent");
e.initEvent("beforeunload", true, true);
window.testReturnValue = true;
is(target.dispatchEvent(e), true,
   "beforeunload event on random element should not be prevented!");
is(handledCount, 6, "Wrong event count; handler should not have run!");
is(target2.dispatchEvent(e), false,
   "beforeunload event should be prevented!");
is(handledCount, 7, "Wrong event count!");
window.testReturnValue = false;
is(target.dispatchEvent(e), false,
   "beforeunload event on random element should be prevented because the event was already cancelled!");
is(handledCount, 7, "Wrong event count; handler should not have run! (2)");

e = document.createEvent("BeforeUnloadEvent");
e.initEvent("beforeunload", true, true);
window.testReturnValue = false;
is(target.dispatchEvent(e), true,
   "beforeunload event on random element should not be prevented (2)!");
is(handledCount, 7, "Wrong event count; handler should not have run! (2)");

is(target2.dispatchEvent(e), false,
   "beforeunload event should be prevented (2)!");
is(handledCount, 8, "Wrong event count!");

// Create normal event for beforeunload.
e = document.createEvent("Event");
e.initEvent("beforeunload", true, true);
window.testReturnValue = true;
is(target.dispatchEvent(e), true,
   "beforeunload event shouldn't be prevented (3)!");
is(handledCount, 8, "Wrong event count: handler should not have run(3)!");
is(target2.dispatchEvent(e), true,
   "beforeunload event shouldn't be prevented (3)!");
is(handledCount, 9, "Wrong event count!");

e = document.createEvent("MouseEvent");
e.initEvent("mousemove", true, true);
window.testReturnValue = true;
is(target.dispatchEvent(e), window.testReturnValue,
   "mousemove event shouldn't have reverse return value handling!");
is(handledCount, 10, "Wrong event count!");
window.testReturnValue = false;
is(target.dispatchEvent(e), window.testReturnValue,
   "mousemove event shouldn't have reverse return value handling (2)!");
is(handledCount, 11, "Wrong event count!");

// Now unhook the beforeunload handler in the subframe, so we don't prompt to
// unload.
target2.onbeforeunload = null;

SimpleTest.finish();
});
</script>
</pre>
</body>
</html>