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Bug 691443 - crash [@ nsAccessibleWrap::GetHWNDFor], r=davidb

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This commit is contained in:
Alexander Surkov 2011-10-11 09:06:10 +09:00
parent a969b2f6e7
commit f10f0641aa
1 changed files with 15 additions and 13 deletions
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28
accessible/src/msaa/nsAccessibleWrap.cpp
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@ -1617,19 +1617,21 @@ nsAccessibleWrap::GetHWNDFor(nsAccessible *aAccessible)
nsIFrame* frame = aAccessible->GetFrame();
if (frame) {
nsIWidget* widget = frame->GetNearestWidget();
bool isVisible = false;
widget->IsVisible(isVisible);
if (isVisible) {
nsCOMPtr<nsIPresShell> shell(aAccessible->GetPresShell());
nsIViewManager* vm = shell->GetViewManager();
if (vm) {
nsCOMPtr<nsIWidget> rootWidget;
vm->GetRootWidget(getter_AddRefs(rootWidget));
// Make sure the accessible belongs to popup. If not then use
// document HWND (which might be different from root widget in the
// case of window emulation).
if (rootWidget != widget)
return static_cast<HWND>(widget->GetNativeData(NS_NATIVE_WINDOW));
if (widget) {
bool isVisible = false;
widget->IsVisible(isVisible);
if (isVisible) {
nsCOMPtr<nsIPresShell> shell(aAccessible->GetPresShell());
nsIViewManager* vm = shell->GetViewManager();
if (vm) {
nsCOMPtr<nsIWidget> rootWidget;
vm->GetRootWidget(getter_AddRefs(rootWidget));
// Make sure the accessible belongs to popup. If not then use
// document HWND (which might be different from root widget in the
// case of window emulation).
if (rootWidget != widget)
return static_cast<HWND>(widget->GetNativeData(NS_NATIVE_WINDOW));
}
}
}
}