gecko-dev/dom/plugins/test/mochitest/test_visibility.html

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<!DOCTYPE html>
<html>
<head>
<title>Test whether windowless plugins receive correct visible/invisible notifications.</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<style>
.hidden { visibility: hidden; }
</style>
<body onload="startTest()">
<p id="display"></p>
<script type="application/javascript" src="plugin-utils.js"></script>
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("untriaged");
setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);
var didPaint = function() {};
function startTest() {
if (p.getPaintCount() < 1) {
setTimeout(startTest, 0);
return;
}
didPaint = function() {
ok(false, "Plugin should not paint until it is visible!");
};
ok(!p.isVisible(), "Plugin should not be visible.");
paintCountIs(p, 0, "Plugin should not have painted.");
didPaint = part2;
p.style.visibility = 'visible';
}
function part2() {
ok(p.isVisible(), "Plugin should now be visible.");
paintCountIs(p, 1, "Plugin should have painted once.");
didPaint = part3;
p.setColor('FF0000FF'); // this causes an invalidate/repaint
}
const kTimeout = 5000; // 5 seconds
var part4GiveUp;
var part4Interval;
function part3() {
ok(p.isVisible(), "Plugin should still be visible.");
paintCountIs(p, 2, "Plugin should have painted twice.");
didPaint = function() {
ok(false, "Plugin should not paint when it is invisible.");
};
p.style.visibility = 'hidden';
part4GiveUp = Date.now() + kTimeout;
part4Interval = setInterval(part4, 100);
}
function part4() {
if (p.isVisible()) {
if (Date.now() < part4GiveUp)
return;
ok(false, "Plugin never became invisible in part4.");
SimpleTest.finish();
return;
}
clearInterval(part4Interval);
ok(true, "Plugin became invisible again.");
p.setColor('FF00FF00');
setTimeout(SimpleTest.finish, 500);
// wait to make sure we don't actually paint
}
function inPaint() {
// We're actually in the middle of painting the plugin so don't do anything
// complex here, for the sake of cases where async plugin painting isn't
// enabled yet
setTimeout(didPaint, 0);
// Don't run that didPaint callback again
didPaint = function() {};
}
</script>
<embed id="theplugin" class="hidden" type="application/x-test" drawmode="solid" color="FFFF0000" paintscript="inPaint()"></embed>
<script type="application/javascript">
var p = document.getElementById('theplugin');
</script>