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Bug 788322. Don't crash when we drawWindow on a page containing a remote <iframe>. r=mattwoodrow

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The test is actually a test for bug 792351. It doesn't pass yet, since
we're not drawing remote iframes properly, but the test should at least
not cause a crash.

--HG--
extra : rebase_source : c25305bf872525d9b918950a3f9d77479a78a1e4
This commit is contained in:
Robert O'Callahan 2012-11-13 11:55:52 -08:00
parent ab2aeba7d3
commit f6e8671799
3 changed files with 69 additions and 1 deletions
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1
layout/base/tests/Makefile.in
View File

@ -149,6 +149,7 @@ MOCHITEST_FILES = \
test_bug761572.html \
test_bug770106.html \
test_maxLineBoxWidth.html \
test_remote_frame.html \
$(NULL)
# Tests for bugs 441782, 467672 and 570378 don't pass reliably on Windows, because of bug 469208

65
layout/base/tests/test_remote_frame.html Normal file
View File

@ -0,0 +1,65 @@
<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/WindowSnapshot.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style>
div, iframe {
position:absolute;
left:0; top:50px;
width:400px; height:400px;
transform: translateY(50px);
border:5px solid black;
}
</style>
</head>
<body>
<div id="d" style="background:blue"></div>
<script type="application/javascript;version=1.7">
"use strict";
var referenceSnapshot;
var iterations = 0;
SimpleTest.waitForExplicitFinish();
function pollForTestPass() {
var snapshot = snapshotWindow(window);
if (compareSnapshots(referenceSnapshot, snapshot, true)[0]) {
ok(true, "Test passed after " + iterations + " iterations");
SimpleTest.finish();
return;
}
++iterations;
if (iterations == 20) {
todo(false, "We couldn't draw the frame, but at least we didn't crash");
SimpleTest.finish();
return;
}
setTimeout(pollForTestPass, 10);
}
function addRemoteFrame() {
let iframe = document.createElement("iframe");
iframe.mozbrowser = true;
iframe.src = "data:text/html,<html style='background:blue;'>";
document.body.appendChild(iframe);
pollForTestPass();
}
addEventListener("load", function() {
referenceSnapshot = snapshotWindow(window);
document.getElementById("d").style.display = 'none';
SpecialPowers.addPermission("browser", true, document);
SpecialPowers.pushPrefEnv({
"set": [
["dom.ipc.browser_frames.oop_by_default", true],
["dom.mozBrowserFramesEnabled", true]
]
}, addRemoteFrame);
});
</script>
</body>

4
layout/ipc/RenderFrameParent.cpp
View File

@ -658,13 +658,15 @@ RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
mContainer->Manager() == aManager,
"retaining manager changed out from under us ... HELP!");
if (mContainer && mContainer->Manager() != aManager) {
if (IsTempLayerManager(aManager) ||
(mContainer && mContainer->Manager() != aManager)) {
// This can happen if aManager is a "temporary" manager, or if the
// widget's layer manager changed out from under us. We need to
// FIXME handle the former case somehow, probably with an API to
// draw a manager's subtree. The latter is bad bad bad, but the
// the NS_ABORT_IF_FALSE() above will flag it. Returning NULL
// here will just cause the shadow subtree not to be rendered.
NS_WARNING("Remote iframe not rendered");
return nullptr;
}