chrome/browser/speech/chrome_speech_recognition_manager_delegate_bubble_ui.h

   1 // Copyright 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_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_BUBBLE_UI_H_
   6 #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_BUBBLE_UI_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "chrome/browser/speech/chrome_speech_recognition_manager_delegate.h"
  10 #include "chrome/browser/speech/speech_recognition_bubble_controller.h"
  11
  12 namespace speech {
  13
  14 // This class extends ChromeSpeechRecognitionManagerDelegate to add the behavior
  15 // required to handle the (bubble) UI for speech recognition sessions initiated
  16 // by input elements with a x-webkit-speech attribute. This extended behavior is
  17 // achieved by means of overriding some SpeechRecognitionEventListener methods
  18 // and intercepting the calls required to show, animate and hide the bubble UI.
  19 class ChromeSpeechRecognitionManagerDelegateBubbleUI
  20     : public ChromeSpeechRecognitionManagerDelegate,
  21       public SpeechRecognitionBubbleControllerDelegate {
  22  public:
  23   ChromeSpeechRecognitionManagerDelegateBubbleUI();
  24   virtual ~ChromeSpeechRecognitionManagerDelegateBubbleUI();
  25
  26  protected:
  27   // SpeechRecognitionBubbleControllerDelegate methods.
  28   virtual void InfoBubbleButtonClicked(
  29       int session_id, SpeechRecognitionBubble::Button button) OVERRIDE;
  30   virtual void InfoBubbleFocusChanged(int session_id) OVERRIDE;
  31
  32   // Overridden base class SpeechRecognitionEventListener methods.
  33   virtual void OnRecognitionStart(int session_id) OVERRIDE;
  34   virtual void OnAudioStart(int session_id) OVERRIDE;
  35   virtual void OnAudioEnd(int session_id) OVERRIDE;
  36   virtual void OnRecognitionEnd(int session_id) OVERRIDE;
  37   virtual void OnRecognitionError(
  38       int session_id, const content::SpeechRecognitionError& error) OVERRIDE;
  39   virtual void OnAudioLevelsChange(
  40       int session_id, float volume, float noise_volume) OVERRIDE;
  41
  42   // Starts a new recognition session, using the config of the last one
  43   // (which is copied into |last_session_config_|). Used for "try again".
  44   void RestartLastSession();
  45
  46   // Called on the UI thread by the base class when tab closure was detected.
  47   virtual void TabClosedCallback(
  48       int render_process_id, int render_view_id) OVERRIDE;
  49
  50  private:
  51   // Lazy initializer for bubble controller.
  52   SpeechRecognitionBubbleController* GetBubbleController();
  53
  54   scoped_refptr<SpeechRecognitionBubbleController> bubble_controller_;
  55   scoped_ptr<content::SpeechRecognitionSessionConfig> last_session_config_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegateBubbleUI);
  58 };
  59
  60 }  // namespace speech
  61
  62 #endif  // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_BUBBLE_UI_H_