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::dom {
  15
  16 class MessageBroadcaster;
  17
  18 /**
  19  * Implementation for the WebIDL MessageListenerManager interface. Base class
  20  * for message managers that are exposed to script.
  21  */
  22 class MessageListenerManager : public nsFrameMessageManager,
  23                                public nsWrapperCache {
  24  public:
  25   NS_DECL_ISUPPORTS_INHERITED
  26   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageListenerManager,
  27                                                          nsFrameMessageManager)
  28
  29   MessageBroadcaster* GetParentObject() { return mParentManager; }
  30
  31   virtual MessageBroadcaster* GetParentManager() override {
  32     return mParentManager;
  33   }
  34
  35   /**
  36    * If aRemove is true then RemoveChildManager(this) will be called on the
  37    * parent manager first.
  38    */
  39   virtual void ClearParentManager(bool aRemove) override;
  40
  41  protected:
  42   MessageListenerManager(ipc::MessageManagerCallback* aCallback,
  43                          MessageBroadcaster* aParentManager,
  44                          MessageManagerFlags aFlags);
  45   virtual ~MessageListenerManager();
  46
  47   RefPtr<MessageBroadcaster> mParentManager;
  48 };
  49
  50 }  // namespace mozilla::dom
  51
  52 #endif  // mozilla_dom_MessageListenerManager_h