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      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 
     35 namespace blink {
     36 
     37 class WebSpeechRecognizer;
     38 class WebString;
     39 
     40 class SpeechRecognitionClientProxy FINAL : public WebCore::SpeechRecognitionClient, public WebSpeechRecognizerClient {
     41 public:
     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     // WebCore::SpeechRecognitionClient:
     49     virtual void start(WebCore::SpeechRecognition*, const WebCore::SpeechGrammarList*, const String& lang, bool continuous, bool interimResults, unsigned long maxAlternatives) OVERRIDE;
     50     virtual void stop(WebCore::SpeechRecognition*) OVERRIDE;
     51     virtual void abort(WebCore::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 
     64 private:
     65     SpeechRecognitionClientProxy(WebSpeechRecognizer*);
     66 
     67     WebSpeechRecognizer* m_recognizer;
     68 };
     69 
     70 }; // namespace blink
     71 
     72 #endif // SpeechRecognitionClientProxy_h
     73