1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef SpeechRecognitionClientProxy_h
27#define SpeechRecognitionClientProxy_h
28
29#include "modules/speech/SpeechRecognitionClient.h"
30#include "public/web/WebSpeechRecognizerClient.h"
31#include "wtf/Compiler.h"
32#include "wtf/PassOwnPtr.h"
33#include "wtf/text/WTFString.h"
34
35namespace blink {
36
37class WebSpeechRecognizer;
38class WebString;
39
40class SpeechRecognitionClientProxy FINAL : public SpeechRecognitionClient, public WebSpeechRecognizerClient {
41public:
42    virtual ~SpeechRecognitionClientProxy();
43
44    // Constructing a proxy object with a 0 WebSpeechRecognizer is safe in
45    // itself, but attempting to call start/stop/abort on it will crash.
46    static PassOwnPtr<SpeechRecognitionClientProxy> create(WebSpeechRecognizer*);
47
48    // SpeechRecognitionClient:
49    virtual void start(SpeechRecognition*, const SpeechGrammarList*, const String& lang, bool continuous, bool interimResults, unsigned long maxAlternatives) OVERRIDE;
50    virtual void stop(SpeechRecognition*) OVERRIDE;
51    virtual void abort(SpeechRecognition*) OVERRIDE;
52
53    // WebSpeechRecognizerClient:
54    virtual void didStartAudio(const WebSpeechRecognitionHandle&) OVERRIDE;
55    virtual void didStartSound(const WebSpeechRecognitionHandle&) OVERRIDE;
56    virtual void didEndSound(const WebSpeechRecognitionHandle&) OVERRIDE;
57    virtual void didEndAudio(const WebSpeechRecognitionHandle&) OVERRIDE;
58    virtual void didReceiveResults(const WebSpeechRecognitionHandle&, const WebVector<WebSpeechRecognitionResult>& newFinalResults, const WebVector<WebSpeechRecognitionResult>& currentInterimResults) OVERRIDE;
59    virtual void didReceiveNoMatch(const WebSpeechRecognitionHandle&, const WebSpeechRecognitionResult&) OVERRIDE;
60    virtual void didReceiveError(const WebSpeechRecognitionHandle&, const WebString& message, WebSpeechRecognizerClient::ErrorCode) OVERRIDE;
61    virtual void didStart(const WebSpeechRecognitionHandle&) OVERRIDE;
62    virtual void didEnd(const WebSpeechRecognitionHandle&) OVERRIDE;
63
64private:
65    SpeechRecognitionClientProxy(WebSpeechRecognizer*);
66
67    WebSpeechRecognizer* m_recognizer;
68};
69
70}; // namespace blink
71
72#endif // SpeechRecognitionClientProxy_h
73