dom/audiochannel/AudioChannelAgent.h

   1 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
   2 /* vim: set ts=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_audio_channel_agent_h__
   8 #define mozilla_dom_audio_channel_agent_h__
   9
  10 #include "nsIAudioChannelAgent.h"
  11 #include "nsCycleCollectionParticipant.h"
  12 #include "nsCOMPtr.h"
  13 #include "nsWeakPtr.h"
  14
  15 #define NS_AUDIOCHANNELAGENT_CONTRACTID "@mozilla.org/audiochannelagent;1"
  16 // f27688e2-3dd7-11e2-904e-10bf48d64bd4
  17 #define NS_AUDIOCHANNELAGENT_CID {0xf27688e2, 0x3dd7, 0x11e2, \
  18       {0x90, 0x4e, 0x10, 0xbf, 0x48, 0xd6, 0x4b, 0xd4}}
  19
  20 class nsIDOMWindow;
  21
  22 namespace mozilla {
  23 namespace dom {
  24
  25 /* Header file */
  26 class AudioChannelAgent : public nsIAudioChannelAgent
  27 {
  28 public:
  29   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  30   NS_DECL_NSIAUDIOCHANNELAGENT
  31
  32   NS_DECL_CYCLE_COLLECTION_CLASS(AudioChannelAgent)
  33
  34   AudioChannelAgent();
  35   virtual void NotifyAudioChannelStateChanged();
  36
  37   void WindowVolumeChanged();
  38
  39   nsIDOMWindow* Window() const
  40   {
  41     return mWindow;
  42   }
  43
  44 private:
  45   virtual ~AudioChannelAgent();
  46
  47   // Returns mCallback if that's non-null, or otherwise tries to get an
  48   // nsIAudioChannelAgentCallback out of mWeakCallback.
  49   already_AddRefed<nsIAudioChannelAgentCallback> GetCallback();
  50
  51   nsresult InitInternal(nsIDOMWindow* aWindow, int32_t aAudioAgentType,
  52                         nsIAudioChannelAgentCallback* aCallback,
  53                         bool aUseWeakRef, bool aWithVideo=false);
  54
  55   nsCOMPtr<nsIDOMWindow> mWindow;
  56   nsCOMPtr<nsIAudioChannelAgentCallback> mCallback;
  57   nsWeakPtr mWeakCallback;
  58   int32_t mAudioChannelType;
  59   bool mIsRegToService;
  60   bool mVisible;
  61   bool mWithVideo;
  62 };
  63
  64 } // namespace dom
  65 } // namespace mozilla
  66 #endif
  67