| // 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. |
| |
| #ifndef UI_APP_LIST_SPEECH_UI_MODEL_OBSERVER_H_ |
| #define UI_APP_LIST_SPEECH_UI_MODEL_OBSERVER_H_ |
| |
| #include <stdint.h> |
| |
| #include "base/strings/string16.h" |
| #include "ui/app_list/app_list_export.h" |
| |
| namespace app_list { |
| |
| enum SpeechRecognitionState { |
| SPEECH_RECOGNITION_OFF = 0, |
| SPEECH_RECOGNITION_READY, |
| SPEECH_RECOGNITION_HOTWORD_LISTENING, |
| SPEECH_RECOGNITION_RECOGNIZING, |
| SPEECH_RECOGNITION_IN_SPEECH, |
| SPEECH_RECOGNITION_STOPPING, |
| SPEECH_RECOGNITION_NETWORK_ERROR, |
| }; |
| |
| class APP_LIST_EXPORT SpeechUIModelObserver { |
| public: |
| // Invoked when sound level for the speech recognition has changed. |level| |
| // represents the current sound-level in the range of [0, 255]. |
| virtual void OnSpeechSoundLevelChanged(uint8_t level) {} |
| |
| // Invoked when a speech result arrives. |is_final| is true only when the |
| // speech result is final. |
| virtual void OnSpeechResult(const base::string16& result, bool is_final) {} |
| |
| // Invoked when the state of speech recognition is changed. |
| virtual void OnSpeechRecognitionStateChanged( |
| SpeechRecognitionState new_state) {} |
| |
| protected: |
| virtual ~SpeechUIModelObserver() {} |
| }; |
| |
| } // namespace app_list |
| |
| #endif // UI_APP_LIST_SPEECH_UI_MODEL_OBSERVER_H_ |