gecko-dev/layout/generic/test/test_bug469774.xul

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<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=469774
-->
<window title="Mozilla Bug 469774"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
<script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js"></script>
<vbox height="50"/>
<menupopup id="popup">
<textbox id="textbox"/>
</menupopup>
<body xmlns="http://www.w3.org/1999/xhtml">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=469774">Mozilla Bug 469774</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
</body>
<script class="testbody" type="application/javascript;version=1.7"><![CDATA[
/** Test for Bug 469774 **/
// Test whether menu popups are blocked from being painted in their parent window.
// Like snapshotWindow, but with DRAWWINDOW_DRAW_CARET
function snapShot() {
var canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
canvas.setAttribute("width", 200);
canvas.setAttribute("height", 50);
var ctx = canvas.getContext("2d");
ctx.drawWindow(window, 0, 0, 200, 50, "transparent", ctx.DRAWWINDOW_DRAW_CARET);
return canvas;
}
function doTest() {
window.removeEventListener("focus", doTest, false);
var before = snapShot();
var popup = document.getElementById("popup");
popup.openPopup(null, "after_start", 0, 0, false, false);
popup.addEventListener("popupshown", function() {
var textbox = document.getElementById("textbox");
textbox.focus(); // show caret
var after = snapShot();
var equal, str1, str2;
[equal, str1, str2] = compareSnapshots(after, before, true);
ok(equal, "Showing a popup shouldn't affect drawing in its parent window",
"got " + str1 + " but expected " + str2);
popup.hidePopup();
SimpleTest.finish();
}, false);
}
SimpleTest.waitForExplicitFinish();
window.addEventListener("focus", doTest, false);
]]></script>
</window>