1// Copyright (c) 2012 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 CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_ 6#define CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_ 7 8#include <map> 9 10#include "base/basictypes.h" 11#include "content/public/common/speech_recognition_result.h" 12#include "content/public/renderer/render_view_observer.h" 13#include "third_party/WebKit/public/platform/WebVector.h" 14#include "third_party/WebKit/public/web/WebSpeechRecognitionHandle.h" 15#include "third_party/WebKit/public/web/WebSpeechRecognizer.h" 16 17namespace content { 18class RenderViewImpl; 19struct SpeechRecognitionError; 20struct SpeechRecognitionResult; 21 22// SpeechRecognitionDispatcher is a delegate for methods used by WebKit for 23// scripted JS speech APIs. It's the complement of 24// SpeechRecognitionDispatcherHost (owned by RenderViewHost). 25class SpeechRecognitionDispatcher : public RenderViewObserver, 26 public blink::WebSpeechRecognizer { 27 public: 28 explicit SpeechRecognitionDispatcher(RenderViewImpl* render_view); 29 virtual ~SpeechRecognitionDispatcher(); 30 31 // Aborts all speech recognitions. 32 void AbortAllRecognitions(); 33 34 private: 35 // RenderViewObserver implementation. 36 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 37 38 // blink::WebSpeechRecognizer implementation. 39 virtual void start(const blink::WebSpeechRecognitionHandle&, 40 const blink::WebSpeechRecognitionParams&, 41 blink::WebSpeechRecognizerClient*) OVERRIDE; 42 virtual void stop(const blink::WebSpeechRecognitionHandle&, 43 blink::WebSpeechRecognizerClient*) OVERRIDE; 44 virtual void abort(const blink::WebSpeechRecognitionHandle&, 45 blink::WebSpeechRecognizerClient*) OVERRIDE; 46 47 void OnRecognitionStarted(int request_id); 48 void OnAudioStarted(int request_id); 49 void OnSoundStarted(int request_id); 50 void OnSoundEnded(int request_id); 51 void OnAudioEnded(int request_id); 52 void OnErrorOccurred(int request_id, const SpeechRecognitionError& error); 53 void OnRecognitionEnded(int request_id); 54 void OnResultsRetrieved(int request_id, 55 const SpeechRecognitionResults& result); 56 57 int GetOrCreateIDForHandle(const blink::WebSpeechRecognitionHandle& handle); 58 bool HandleExists(const blink::WebSpeechRecognitionHandle& handle); 59 const blink::WebSpeechRecognitionHandle& GetHandleFromID(int handle_id); 60 61 // The WebKit client class that we use to send events back to the JS world. 62 blink::WebSpeechRecognizerClient* recognizer_client_; 63 64 typedef std::map<int, blink::WebSpeechRecognitionHandle> HandleMap; 65 HandleMap handle_map_; 66 int next_id_; 67 68 DISALLOW_COPY_AND_ASSIGN(SpeechRecognitionDispatcher); 69}; 70 71} // namespace content 72 73#endif // CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_ 74