ui/app_list/speech_ui_model.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 UI_APP_LIST_SPEECH_UI_MODEL_H_
   6 #define UI_APP_LIST_SPEECH_UI_MODEL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/observer_list.h"
  10 #include "base/strings/string16.h"
  11 #include "ui/app_list/app_list_export.h"
  12 #include "ui/app_list/speech_ui_model_observer.h"
  13
  14 namespace app_list {
  15
  16 // SpeechUIModel provides the interface to update the UI for speech recognition.
  17 class APP_LIST_EXPORT SpeechUIModel {
  18  public:
  19   SpeechUIModel();
  20   virtual ~SpeechUIModel();
  21
  22   void SetSpeechResult(const base::string16& result, bool is_final);
  23   void UpdateSoundLevel(int16 level);
  24   void SetSpeechRecognitionState(SpeechRecognitionState new_state);
  25
  26   void AddObserver(SpeechUIModelObserver* observer);
  27   void RemoveObserver(SpeechUIModelObserver* observer);
  28
  29   const base::string16& result() const { return result_; }
  30   bool is_final() const { return is_final_; }
  31   int16 sound_level() const { return sound_level_; }
  32   SpeechRecognitionState state() const { return state_; }
  33
  34  private:
  35   base::string16 result_;
  36   bool is_final_;
  37   int16 sound_level_;
  38   SpeechRecognitionState state_;
  39
  40   // The sound level range to compute visible sound-level.
  41   int16 minimum_sound_level_;
  42   int16 maximum_sound_level_;
  43
  44   ObserverList<SpeechUIModelObserver> observers_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(SpeechUIModel);
  47 };
  48
  49 }  // namespace app_list
  50
  51 #endif  // UI_APP_LIST_SPEECH_UI_MODEL_H_