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 #include "ui/gfx/image/image_skia.h"
  14
  15 namespace app_list {
  16
  17 // SpeechUIModel provides the interface to update the UI for speech recognition.
  18 class APP_LIST_EXPORT SpeechUIModel {
  19  public:
  20   // Construct the model, initially in state SPEECH_RECOGNITION_OFF.
  21   SpeechUIModel();
  22   virtual ~SpeechUIModel();
  23
  24   void SetSpeechResult(const base::string16& result, bool is_final);
  25   void UpdateSoundLevel(int16 level);
  26   void SetSpeechRecognitionState(SpeechRecognitionState new_state);
  27
  28   void AddObserver(SpeechUIModelObserver* observer);
  29   void RemoveObserver(SpeechUIModelObserver* observer);
  30
  31   const base::string16& result() const { return result_; }
  32   bool is_final() const { return is_final_; }
  33   int16 sound_level() const { return sound_level_; }
  34   SpeechRecognitionState state() const { return state_; }
  35   const gfx::ImageSkia& logo() const { return logo_; }
  36   void set_logo(const gfx::ImageSkia& logo) { logo_ = logo; }
  37
  38  private:
  39   base::string16 result_;
  40   bool is_final_;
  41   int16 sound_level_;
  42   SpeechRecognitionState state_;
  43
  44   // The logo image which the speech UI will show at the top-left.
  45   gfx::ImageSkia logo_;
  46
  47   // The sound level range to compute visible sound-level.
  48   int16 minimum_sound_level_;
  49   int16 maximum_sound_level_;
  50
  51   ObserverList<SpeechUIModelObserver> observers_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(SpeechUIModel);
  54 };
  55
  56 }  // namespace app_list
  57
  58 #endif  // UI_APP_LIST_SPEECH_UI_MODEL_H_