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Bug 130078 - Make chrome subdocuments of chrome parents share the view hierarchy [p=roc r+sr=bzbarsky a=blocking1.9+]

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This commit is contained in:
reed@reedloden.com 2007-11-07 20:50:49 -08:00
parent 77b48f0546
commit 034e2504a2
1 changed files with 7 additions and 8 deletions
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15
layout/base/nsDocumentViewer.cpp
View File

@ -2199,19 +2199,18 @@ DocumentViewerImpl::MakeWindow(nsIWidget* aParentWidget,
// OK, so the container is not already hooked up into a foreign view manager hierarchy.
// That means we can choose not to hook ourselves up.
//
// If the parent container is a chrome shell then we won't hook into its view
// If the parent container is a chrome shell and we are a content shell
// then we won't hook into its view
// tree. This will improve performance a little bit (especially given scrolling/painting perf bugs)
// but is really just for peace of mind. This check can be removed if we want to support fancy
// chrome effects like transparent controls floating over content, transparent Web browsers, and
// things like that, and the perf bugs are fixed.
nsCOMPtr<nsIDocShellTreeItem> container(do_QueryReferent(mContainer));
nsCOMPtr<nsIDocShellTreeItem> parentContainer;
PRInt32 itemType;
if (nsnull == container
|| NS_FAILED(container->GetParent(getter_AddRefs(parentContainer)))
|| nsnull == parentContainer
|| NS_FAILED(parentContainer->GetItemType(&itemType))
|| itemType != nsIDocShellTreeItem::typeContent) {
nsCOMPtr<nsIDocShellTreeItem> sameTypeParent;
if (container) {
container->GetSameTypeParent(getter_AddRefs(sameTypeParent));
}
if (!sameTypeParent) {
containerView = nsnull;
}
}