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Bug 550330. Try harder to find a document with a layer manager that we can use to create our ImageContainer. r=mats

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This commit is contained in:
Robert O'Callahan 2010-04-23 12:26:38 +12:00
parent 1163079236
commit 47949eb981
1 changed files with 34 additions and 17 deletions
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51
content/html/content/src/nsHTMLMediaElement.cpp
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@ -85,6 +85,7 @@
#include "nsVideoFrame.h"
#include "BasicLayers.h"
#include <limits>
#include "nsIDocShellTreeItem.h"
#ifdef MOZ_OGG
#include "nsOggDecoder.h"
@ -1752,26 +1753,42 @@ void nsHTMLMediaElement::NotifyAutoplayDataReady()
*/
static already_AddRefed<LayerManager> GetLayerManagerForDoc(nsIDocument* aDoc)
{
while (aDoc) {
nsIDocument* displayDoc = aDoc->GetDisplayDocument();
if (displayDoc) {
aDoc = displayDoc;
continue;
}
nsIDocument* doc = aDoc;
nsIDocument* displayDoc = doc->GetDisplayDocument();
if (displayDoc) {
doc = displayDoc;
}
nsIPresShell* shell = aDoc->GetPrimaryShell();
if (shell) {
nsIFrame* rootFrame = shell->FrameManager()->GetRootFrame();
if (rootFrame) {
nsIWidget* widget =
nsLayoutUtils::GetDisplayRootFrame(rootFrame)->GetWindow();
if (widget) {
nsRefPtr<LayerManager> manager = widget->GetLayerManager();
return manager.forget();
}
nsIPresShell* shell = doc->GetPrimaryShell();
nsCOMPtr<nsISupports> container = doc->GetContainer();
nsCOMPtr<nsIDocShellTreeItem> docShellTreeItem = do_QueryInterface(container);
while (!shell && docShellTreeItem) {
// We may be in a display:none subdocument, or we may not have a presshell
// created yet.
// Walk the docshell tree to find the nearest container that has a presshell,
// and find the root widget from that.
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(docShellTreeItem);
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
if (presShell) {
shell = presShell;
} else {
nsCOMPtr<nsIDocShellTreeItem> parent;
docShellTreeItem->GetParent(getter_AddRefs(parent));
docShellTreeItem = parent;
}
}
if (shell) {
nsIFrame* rootFrame = shell->FrameManager()->GetRootFrame();
if (rootFrame) {
nsIWidget* widget =
nsLayoutUtils::GetDisplayRootFrame(rootFrame)->GetWindow();
if (widget) {
nsRefPtr<LayerManager> manager = widget->GetLayerManager();
return manager.forget();
}
}
aDoc = aDoc->GetParentDocument();
}
nsRefPtr<LayerManager> manager = new BasicLayerManager(nsnull);