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Bug 783416 - Stop saving the prototype in WindowStateHolder (r=mrbkap)

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This commit is contained in:
Bill McCloskey 2012-08-17 10:09:01 -07:00
parent 2c43c45c0c
commit 7ea7c080cb
1 changed files with 5 additions and 60 deletions
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65
dom/base/nsGlobalWindow.cpp
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@ -1602,24 +1602,16 @@ public:
NS_DECL_ISUPPORTS
WindowStateHolder(nsGlobalWindow *aWindow,
nsIXPConnectJSObjectHolder *aHolder,
nsIXPConnectJSObjectHolder *aOuterProto,
nsIXPConnectJSObjectHolder *aOuterRealProto);
nsIXPConnectJSObjectHolder *aHolder);
nsGlobalWindow* GetInnerWindow() { return mInnerWindow; }
nsIXPConnectJSObjectHolder *GetInnerWindowHolder()
{ return mInnerWindowHolder; }
nsIXPConnectJSObjectHolder* GetOuterProto() { return mOuterProto; }
nsIXPConnectJSObjectHolder* GetOuterRealProto() { return mOuterRealProto; }
void DidRestoreWindow()
{
mInnerWindow = nullptr;
mInnerWindowHolder = nullptr;
mOuterProto = nullptr;
mOuterRealProto = nullptr;
}
protected:
@ -1629,19 +1621,13 @@ protected:
// We hold onto this to make sure the inner window doesn't go away. The outer
// window ends up recalculating it anyway.
nsCOMPtr<nsIXPConnectJSObjectHolder> mInnerWindowHolder;
nsCOMPtr<nsIXPConnectJSObjectHolder> mOuterProto;
nsCOMPtr<nsIXPConnectJSObjectHolder> mOuterRealProto;
};
NS_DEFINE_STATIC_IID_ACCESSOR(WindowStateHolder, WINDOWSTATEHOLDER_IID)
WindowStateHolder::WindowStateHolder(nsGlobalWindow *aWindow,
nsIXPConnectJSObjectHolder *aHolder,
nsIXPConnectJSObjectHolder *aOuterProto,
nsIXPConnectJSObjectHolder *aOuterRealProto)
: mInnerWindow(aWindow),
mOuterProto(aOuterProto),
mOuterRealProto(aOuterRealProto)
nsIXPConnectJSObjectHolder *aHolder)
: mInnerWindow(aWindow)
{
NS_PRECONDITION(aWindow, "null window");
NS_PRECONDITION(aWindow->IsInnerWindow(), "Saving an outer window");
@ -2047,20 +2033,7 @@ nsGlobalWindow::SetNewDocument(nsIDocument* aDocument,
NS_ENSURE_SUCCESS(rv, rv);
}
// XXX Not sure if this is needed.
if (aState) {
JSObject *proto;
if (nsIXPConnectJSObjectHolder *holder = wsh->GetOuterRealProto()) {
holder->GetJSObject(&proto);
} else {
proto = nullptr;
}
if (!JS_SetPrototype(cx, mJSObject, xpc_UnmarkGrayObject(proto))) {
NS_ERROR("can't set prototype");
return NS_ERROR_FAILURE;
}
} else {
if (!aState) {
if (!JS_DefineProperty(cx, newInnerWindow->mJSObject, "window",
OBJECT_TO_JSVAL(mJSObject),
JS_PropertyStub, JS_StrictPropertyStub,
@ -10361,38 +10334,10 @@ nsGlobalWindow::SaveWindowState(nsISupports **aState)
// to the page.
inner->Freeze();
// Remember the outer window's prototype.
JSContext *cx = mContext->GetNativeContext();
JSAutoRequest req(cx);
nsIXPConnect *xpc = nsContentUtils::XPConnect();
nsCOMPtr<nsIClassInfo> ci =
do_QueryInterface((nsIScriptGlobalObject *)this);
nsCOMPtr<nsIXPConnectJSObjectHolder> proto;
nsresult rv = xpc->GetWrappedNativePrototype(cx, mJSObject, ci,
getter_AddRefs(proto));
NS_ENSURE_SUCCESS(rv, rv);
JSObject *realProto = JS_GetPrototype(mJSObject);
nsCOMPtr<nsIXPConnectJSObjectHolder> realProtoHolder;
if (realProto) {
rv = xpc->HoldObject(cx, realProto, getter_AddRefs(realProtoHolder));
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsISupports> state = new WindowStateHolder(inner,
mInnerWindowHolder,
proto,
realProtoHolder);
mInnerWindowHolder);
NS_ENSURE_TRUE(state, NS_ERROR_OUT_OF_MEMORY);
JSObject *wnProto;
proto->GetJSObject(&wnProto);
if (!JS_SetPrototype(cx, mJSObject, wnProto)) {
return NS_ERROR_FAILURE;
}
#ifdef DEBUG_PAGE_CACHE
printf("saving window state, state = %p\n", (void*)state);
#endif