<!
DOCTYPE HTML>
<
html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=771043
-->
<
head>
<
meta charset=
"utf-8">
<
title>Test for Bug 771043</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" type=
"text/css" href=
"/tests/SimpleTest/test.css"/>
<
script type=
"application/javascript">
/** Test for Bug 771043 **/
var expectedValue;
var callCount = 0;
var storedHeight;
function callback(arg) {
++callCount;
is(arg.matches, expectedValue,
"Should have the right value on call #" + callCount +
" to the callback");
SimpleTest.executeSoon(tests.shift());
}
function flushLayout() {
storedHeight = document.querySelector(
"iframe").offsetHeight;
}
function setHeight(height) {
var ifr = document.querySelector(
"iframe");
ifr.
style.height = height +
"px";
flushLayout();
}
SimpleTest.waitForExplicitFinish();
var tests = [
() => { expectedValue = true; setHeight(50); },
() => { expectedValue = false; setHeight(200); },
() => {
var ifr = document.querySelector(
"iframe");
ifr.
style.display =
"none";
flushLayout();
ifr.
style.display =
"";
expectedValue = true;
setHeight(50);
},
() => { expectedValue = false; setHeight(200); },
SimpleTest.finish.bind(SimpleTest)
];
addLoadEvent(function() {
var mql = frames[0].matchMedia(
"(orientation: landscape)");
mql.addListener(callback);
tests.shift()();
});
</
script>
</
head>
<
body>
<a target=
"_blank" href=
"https://bugzilla.mozilla.org/show_bug.cgi?id=771043">Mozill
a Bug 771043</a>
<!-- Important: the iframe needs to be displayed -->
<p id="display"><iframe style="width: 100px; height: 200px"</p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>