1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #ifndef mozilla_dom_MessageListenerManager_h
8 #define mozilla_dom_MessageListenerManager_h
9 
10 #include "nsCycleCollectionNoteChild.h"
11 #include "nsFrameMessageManager.h"
12 #include "nsWrapperCache.h"
13 
14 namespace mozilla {
15 namespace dom {
16 
17 class MessageBroadcaster;
18 
19 /**
20  * Implementation for the WebIDL MessageListenerManager interface. Base class
21  * for message managers that are exposed to script.
22  */
23 class MessageListenerManager : public nsFrameMessageManager,
24                                public nsWrapperCache {
25  public:
26   NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageListenerManager,nsFrameMessageManager)27   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageListenerManager,
28                                                          nsFrameMessageManager)
29 
30   MessageBroadcaster* GetParentObject() { return mParentManager; }
31 
GetParentManager()32   virtual MessageBroadcaster* GetParentManager() override {
33     return mParentManager;
34   }
35 
36   /**
37    * If aRemove is true then RemoveChildManager(this) will be called on the
38    * parent manager first.
39    */
40   virtual void ClearParentManager(bool aRemove) override;
41 
42  protected:
43   MessageListenerManager(ipc::MessageManagerCallback* aCallback,
44                          MessageBroadcaster* aParentManager,
45                          MessageManagerFlags aFlags);
46   virtual ~MessageListenerManager();
47 
48   RefPtr<MessageBroadcaster> mParentManager;
49 };
50 
51 }  // namespace dom
52 }  // namespace mozilla
53 
54 #endif  // mozilla_dom_MessageListenerManager_h
55