gecko-dev/image/test/crashtests/ownerdiscard.html
Boris Zbarsky 9ee8c16efe Bug 1431774 part 1. Remove a bunch of unnecessary QIs to nsIImageLoadingContent in JS. r=mystor
These are all no-ops because the objects involved are already implementing one of the WebIDL interfaces that pulls in MozImageLoadingContent, and that's all script gets to see.

MozReview-Commit-ID: Io2mLHbv7qM
2018-01-19 14:19:39 -05:00

49 lines
1.7 KiB
HTML

<!DOCTYPE html>
<html class="reftest-wait">
<body>
<div id=tCF0>
<img id=victim src=ie.png>
<iframe src=discardframe.htm></iframe>
</div>
<script>
const Ci = SpecialPowers.Ci;
const Cc = SpecialPowers.Cc;
function ImageDecoderObserverStub()
{
this.sizeAvailable = function sizeAvailable(aRequest) {}
this.frameComplete = function frameComplete(aRequest) {}
this.decodeComplete = function decodeComplete(aRequest) {}
this.loadComplete = function loadComplete(aRequest) {}
this.frameUpdate = function frameUpdate(aRequest) {}
this.discard = function discard(aRequest) {}
this.isAnimated = function isAnimated(aRequest) {}
}
var img = document.getElementById('victim');
var observer = new ImageDecoderObserverStub();
observer.discard = function() {
cleanupAndFinish();
}
observer = SpecialPowers.wrapCallbackObject(observer);
var gObserver = Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
.createScriptedObserver(observer);
var imgLoadingContent = SpecialPowers.wrap(img);
imgLoadingContent.addObserver(gObserver);
function initCF() {
setTimeout(function() { document.adoptNode(tCF0); }, 0);
}
document.addEventListener("DOMContentLoaded", initCF);
function cleanupAndFinish() {
imgLoadingContent.removeObserver(gObserver);
setTimeout("document.documentElement.className = '';", 0);
}
function loadhandler() {
setTimeout("cleanupAndFinish();", 30000);
}
window.addEventListener("load", function() {
SpecialPowers.pushPrefEnv({"set":[["min_discard_timeout_ms", 1]]}, loadhandler)});
</script>
</body>
</html>