71 lines
2.0 KiB
Objective-C
71 lines
2.0 KiB
Objective-C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#import <Cocoa/Cocoa.h>
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#include "nsIXPConnect.h"
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#include "nsIObserver.h"
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#include "nsIDOMWindow.h"
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#include "nsIJSContextStack.h"
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#include "nsServiceManagerUtils.h"
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@interface ObserverPair : NSObject
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{
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@public
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nsIObserver *observer;
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nsIDOMWindow *window;
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}
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- (id) initWithObserver:(nsIObserver *)aObserver window:(nsIDOMWindow *)aWindow;
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- (void) dealloc;
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@end
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/**
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* Returns the DOM window that owns the given observer in the case that the
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* observer is implemented in JS and was created in a DOM window's scope.
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*
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* We need this so that we can properly clean up in cases where the window gets
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* closed before the growl timeout/click notifications have fired. Otherwise we
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* leak those windows.
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*/
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static already_AddRefed<nsIDOMWindow> __attribute__((unused))
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GetWindowOfObserver(nsIObserver* aObserver)
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{
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nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS(do_QueryInterface(aObserver));
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if (!wrappedJS) {
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// We can't do anything with objects that aren't implemented in JS...
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return nullptr;
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}
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JSObject* obj;
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nsresult rv = wrappedJS->GetJSObject(&obj);
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NS_ENSURE_SUCCESS(rv, nullptr);
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nsCOMPtr<nsIThreadJSContextStack> stack =
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do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv);
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NS_ENSURE_SUCCESS(rv, nullptr);
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JSContext* cx = stack->GetSafeJSContext();
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NS_ENSURE_TRUE(cx, nullptr);
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JSAutoRequest ar(cx);
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JSAutoCompartment ac(cx, obj);
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JSObject* global = JS_GetGlobalForObject(cx, obj);
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NS_ENSURE_TRUE(global, nullptr);
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nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID()));
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NS_ENSURE_TRUE(xpc, nullptr);
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nsCOMPtr<nsIXPConnectWrappedNative> wrapper;
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rv = xpc->GetWrappedNativeOfJSObject(cx, global, getter_AddRefs(wrapper));
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NS_ENSURE_SUCCESS(rv, nullptr);
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nsCOMPtr<nsIDOMWindow> window = do_QueryWrappedNative(wrapper);
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NS_ENSURE_TRUE(window, nullptr);
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return window.forget();
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}
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