chrome/browser/speech/chrome_speech_recognition_manager_delegate.h

   1 // Copyright (c) 2012 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_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
   6 #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "chrome/browser/speech/speech_recognition_bubble_controller.h"
  11 #include "content/public/browser/speech_recognition_event_listener.h"
  12 #include "content/public/browser/speech_recognition_manager_delegate.h"
  13 #include "content/public/browser/speech_recognition_session_config.h"
  14
  15
  16 namespace speech {
  17
  18 // This is Chrome's implementation of the SpeechRecognitionManagerDelegate
  19 // interface.
  20 class ChromeSpeechRecognitionManagerDelegate
  21     : NON_EXPORTED_BASE(public content::SpeechRecognitionManagerDelegate),
  22       public content::SpeechRecognitionEventListener,
  23       public SpeechRecognitionBubbleControllerDelegate {
  24  public:
  25   ChromeSpeechRecognitionManagerDelegate();
  26   virtual ~ChromeSpeechRecognitionManagerDelegate();
  27
  28  protected:
  29   // SpeechRecognitionBubbleControllerDelegate methods.
  30   virtual void InfoBubbleButtonClicked(
  31       int session_id, SpeechRecognitionBubble::Button button) OVERRIDE;
  32   virtual void InfoBubbleFocusChanged(int session_id) OVERRIDE;
  33
  34   // SpeechRecognitionEventListener methods.
  35   virtual void OnRecognitionStart(int session_id) OVERRIDE;
  36   virtual void OnAudioStart(int session_id) OVERRIDE;
  37   virtual void OnEnvironmentEstimationComplete(int session_id) OVERRIDE;
  38   virtual void OnSoundStart(int session_id) OVERRIDE;
  39   virtual void OnSoundEnd(int session_id) OVERRIDE;
  40   virtual void OnAudioEnd(int session_id) OVERRIDE;
  41   virtual void OnRecognitionEnd(int session_id) OVERRIDE;
  42   virtual void OnRecognitionResults(
  43       int session_id, const content::SpeechRecognitionResults& result) OVERRIDE;
  44   virtual void OnRecognitionError(
  45       int session_id, const content::SpeechRecognitionError& error) OVERRIDE;
  46   virtual void OnAudioLevelsChange(int session_id, float volume,
  47                                    float noise_volume) OVERRIDE;
  48
  49   // SpeechRecognitionManagerDelegate methods.
  50   virtual void GetDiagnosticInformation(bool* can_report_metrics,
  51                                         std::string* hardware_info) OVERRIDE;
  52   virtual void CheckRecognitionIsAllowed(
  53       int session_id,
  54       base::Callback<void(bool ask_user, bool is_allowed)> callback) OVERRIDE;
  55   virtual content::SpeechRecognitionEventListener* GetEventListener() OVERRIDE;
  56
  57  private:
  58   class OptionalRequestInfo;
  59   class TabWatcher;
  60
  61   // Checks for VIEW_TYPE_TAB_CONTENTS host in the UI thread and notifies back
  62   // the result in the IO thread through |callback|.
  63   static void CheckRenderViewType(
  64       base::Callback<void(bool ask_user, bool is_allowed)> callback,
  65       int render_process_id,
  66       int render_view_id,
  67       bool js_api);
  68
  69   // Starts a new recognition session, using the config of the last one
  70   // (which is copied into |last_session_config_|). Used for "try again".
  71   void RestartLastSession();
  72
  73   // Callback called by |tab_watcher_| on the IO thread to signal tab closure.
  74   void TabClosedCallback(int render_process_id, int render_view_id);
  75
  76   // Lazy initializers for bubble and tray icon controller.
  77   SpeechRecognitionBubbleController* GetBubbleController();
  78
  79   scoped_refptr<SpeechRecognitionBubbleController> bubble_controller_;
  80   scoped_refptr<OptionalRequestInfo> optional_request_info_;
  81   scoped_ptr<content::SpeechRecognitionSessionConfig> last_session_config_;
  82   scoped_refptr<TabWatcher> tab_watcher_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegate);
  85 };
  86
  87 }  // namespace speech
  88
  89 #endif  // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_