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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/strings/string16.h"
#include "ui/app_list/app_list_export.h"
#include "ui/app_list/speech_ui_model_observer.h"
#include "ui/gfx/image/image_skia.h"
namespace app_list {
// SpeechUIModel provides the interface to update the UI for speech recognition.
class APP_LIST_EXPORT SpeechUIModel {
// Construct the model, initially in state SPEECH_RECOGNITION_OFF.
virtual ~SpeechUIModel();
void SetSpeechResult(const base::string16& result, bool is_final);
void UpdateSoundLevel(int16_t level);
// Sets the speech recognition state. If |always_show_ui| is true,
// sends the state change to the UI observers regardless of whether
// the |new_state| is different from the old one.
void SetSpeechRecognitionState(SpeechRecognitionState new_state,
bool always_show_ui);
void AddObserver(SpeechUIModelObserver* observer);
void RemoveObserver(SpeechUIModelObserver* observer);
const base::string16& result() const { return result_; }
bool is_final() const { return is_final_; }
int16_t sound_level() const { return sound_level_; }
SpeechRecognitionState state() const { return state_; }
const gfx::ImageSkia& logo() const { return logo_; }
void set_logo(const gfx::ImageSkia& logo) { logo_ = logo; }
base::string16 result_;
bool is_final_;
int16_t sound_level_;
SpeechRecognitionState state_;
// The logo image which the speech UI will show at the top-left.
gfx::ImageSkia logo_;
// The sound level range to compute visible sound-level.
int16_t minimum_sound_level_;
int16_t maximum_sound_level_;
base::ObserverList<SpeechUIModelObserver> observers_;
} // namespace app_list