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<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="/tests/SimpleTest/test.css" type="text/css"?>
<window title="Popup Reflow Tests"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<panel id="testPanel"
type="arrow"
noautohide="true">
</panel>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script>
<![CDATA[
var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Promise.jsm");
let panel, anchor, arrow;
// A reflow observer - it just remembers the stack trace of all sync reflows
// done by the panel.
let observer = {
reflows: [],
reflow: function (start, end) {
// Ignore reflows triggered by native code
// (Reflows from native code only have an empty stack after the first frame)
var path = (new Error().stack).split("\n").slice(1).join("");
if (path === "") {
return;
}
this.reflows.push(new Error().stack);
},
reflowInterruptible: function (start, end) {
// We're not interested in interruptible reflows. Why, you ask? Because
// we've simply cargo-culted this test from browser_tabopen_reflows.js!
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsIReflowObserver,
Ci.nsISupportsWeakReference])
};
// A test utility that counts the reflows caused by a test function. If the
// count of reflows isn't what is expected, it causes a test failure and logs
// the stack trace of all seen reflows.
function countReflows(testfn, expected) {
let deferred = Promise.defer();
observer.reflows = [];
let docShell = panel.ownerDocument.defaultView
.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
.getInterface(Components.interfaces.nsIWebNavigation)
.QueryInterface(Components.interfaces.nsIDocShell);
docShell.addWeakReflowObserver(observer);
testfn().then(() => {
docShell.removeWeakReflowObserver(observer);
SimpleTest.is(observer.reflows.length, expected, "correct number of reflows");
if (observer.reflows.length != expected) {
SimpleTest.info("stack traces of reflows:\n" + observer.reflows.join("\n") + "\n");
}
deferred.resolve();
});
return deferred.promise
}
function openPopup() {
let deferred = Promise.defer();
panel.addEventListener("popupshown", function popupshown() {
panel.removeEventListener("popupshown", popupshown);
deferred.resolve();
});
panel.openPopup(anchor, "before_start");
return deferred.promise
}
// ********************
// The actual tests...
// We only have one atm - simply open a popup.
//
function testSimplePanel() {
return openPopup();
}
// ********************
// The test harness...
//
SimpleTest.waitForExplicitFinish();
addEventListener("load", function() {
anchor = document.getElementById("anchor");
panel = document.getElementById("testPanel");
arrow = document.getAnonymousElementByAttribute(panel, "anonid", "arrow");
// Cancel the arrow panel slide-in transition (bug 767133) - we are only
// testing reflows in the core panel implementation and not reflows that may
// or may not be caused by transitioning....
arrow.style.transition = "none";
// and off we go...
countReflows(testSimplePanel, 1).then(SimpleTest.finish);
});
]]>
</script>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>The anchor --> <span id="anchor">v</span> <--</p>
</body>
</window>
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