src/chrome/browser/speech/tts_message_filter.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_SPEECH_TTS_MESSAGE_FILTER_H_
   6 #define CHROME_BROWSER_SPEECH_TTS_MESSAGE_FILTER_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "chrome/browser/speech/tts_controller.h"
  10 #include "chrome/common/tts_messages.h"
  11 #include "content/public/browser/browser_message_filter.h"
  12
  13 class Profile;
  14
  15 class TtsMessageFilter
  16     : public content::BrowserMessageFilter,
  17       public UtteranceEventDelegate,
  18       public VoicesChangedDelegate,
  19       public base::SupportsWeakPtr<TtsMessageFilter> {
  20  public:
  21   TtsMessageFilter(int render_process_id, Profile* profile);
  22
  23   // content::BrowserMessageFilter implementation.
  24   virtual void OverrideThreadForMessage(
  25       const IPC::Message& message,
  26       content::BrowserThread::ID* thread) OVERRIDE;
  27   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  28   virtual void OnChannelClosing() OVERRIDE;
  29
  30   // UtteranceEventDelegate implementation.
  31   virtual void OnTtsEvent(Utterance* utterance,
  32                           TtsEventType event_type,
  33                           int char_index,
  34                           const std::string& error_message) OVERRIDE;
  35
  36   // VoicesChangedDelegate implementation.
  37   virtual void OnVoicesChanged() OVERRIDE;
  38
  39  private:
  40   virtual ~TtsMessageFilter();
  41
  42   void OnInitializeVoiceList();
  43   void OnSpeak(const TtsUtteranceRequest& utterance);
  44   void OnPause();
  45   void OnResume();
  46   void OnCancel();
  47
  48   void OnChannelClosingInUIThread();
  49
  50   int render_process_id_;
  51   Profile* profile_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(TtsMessageFilter);
  54 };
  55
  56 #endif  // CHROME_BROWSER_SPEECH_TTS_MESSAGE_FILTER_H_