dom/base/MessageListenerManager.h

   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
  27   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageListenerManager,
  28                                                          nsFrameMessageManager)
  29
  30   MessageBroadcaster* GetParentObject() { return mParentManager; }
  31
  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