<!
DOCTYPE HTML>
<
html>
<
head>
<
meta charset=
"utf-8">
<
title>Test for overflow events</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" type=
"text/css" href=
"/tests/SimpleTest/test.css"/>
<
script type=
"application/javascript">
SimpleTest.waitForExplicitFinish();
window.addEventListener(
"load", function (event) {
SpecialPowers.pushPrefEnv(
{ set: [[
"layout.overflow-underflow.content.enabled", true]] },
function () {
if (event.target == document) {
test_bug981637();
}
}
);
});
/** Test for Bug 981637: correct overflow event firing in updateOverflow **/
var overflow_fired = false;
function overflow_listener(event) {
overflow_fired = true;
}
function test_bug981637() {
var outerDiv = document.getElementById(
"bug981637");
var innerDiv = outerDiv.firstChild;
innerDiv.offsetWidth; // flush layout
is(overflow_fired, false,
"correct setup");
outerDiv.addEventListener(
"overflow", overflow_listener);
innerDiv.
style.transform =
"scale(1.2)";
innerDiv.offsetWidth; // flush layout
// run finish step after the overflow event fires (off the event loop)
setTimeout(test_bug981637_step2, 0);
}
function test_bug981637_step2() {
is(overflow_fired, true,
"overflow event should have fired after updating transform");
SimpleTest.finish();
}
</
script>
</
head>
<
body>
<a target=
"_blank" href=
"https://bugzilla.mozilla.org/show_bug.cgi?id=981637">Mozill
a Bug 981637</a>
<div id="bug981637" style="overflow: hidden; width: 100px; height: 100px;"><div style="transform: scale(0.8); width: 100px; height: 100px"></div></div>
<pre id="test">
</pre>
</body>
</html>
