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.
5 #ifndef CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
6 #define CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
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"
19 struct SpeechRecognitionError
;
20 struct SpeechRecognitionResult
;
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).
25 class SpeechRecognitionDispatcher
: public RenderViewObserver
,
26 public blink::WebSpeechRecognizer
{
28 explicit SpeechRecognitionDispatcher(RenderViewImpl
* render_view
);
29 virtual ~SpeechRecognitionDispatcher();
31 // Aborts all speech recognitions.
32 void AbortAllRecognitions();
35 // RenderViewObserver implementation.
36 virtual bool OnMessageReceived(const IPC::Message
& message
) override
;
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
;
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
);
57 int GetOrCreateIDForHandle(const blink::WebSpeechRecognitionHandle
& handle
);
58 bool HandleExists(const blink::WebSpeechRecognitionHandle
& handle
);
59 const blink::WebSpeechRecognitionHandle
& GetHandleFromID(int handle_id
);
61 // The WebKit client class that we use to send events back to the JS world.
62 blink::WebSpeechRecognizerClient
* recognizer_client_
;
64 typedef std::map
<int, blink::WebSpeechRecognitionHandle
> HandleMap
;
65 HandleMap handle_map_
;
68 DISALLOW_COPY_AND_ASSIGN(SpeechRecognitionDispatcher
);
71 } // namespace content
73 #endif // CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_