third_party/WebKit/Source/web/SpeechRecognitionClientProxy.h

   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 MediaStreamTrack;
  38 class WebSpeechRecognizer;
  39 class WebString;
  40
  41 class SpeechRecognitionClientProxy final : public SpeechRecognitionClient, public WebSpeechRecognizerClient {
  42 public:
  43     ~SpeechRecognitionClientProxy() override;
  44
  45     // Constructing a proxy object with a 0 WebSpeechRecognizer is safe in
  46     // itself, but attempting to call start/stop/abort on it will crash.
  47     static PassOwnPtr<SpeechRecognitionClientProxy> create(WebSpeechRecognizer*);
  48
  49     // SpeechRecognitionClient:
  50     void start(SpeechRecognition*, const SpeechGrammarList*, const String& lang, const String& serviceURI, bool continuous, bool interimResults, unsigned long maxAlternatives, MediaStreamTrack*) override;
  51     void stop(SpeechRecognition*) override;
  52     void abort(SpeechRecognition*) override;
  53
  54     // WebSpeechRecognizerClient:
  55     void didStartAudio(const WebSpeechRecognitionHandle&) override;
  56     void didStartSound(const WebSpeechRecognitionHandle&) override;
  57     void didEndSound(const WebSpeechRecognitionHandle&) override;
  58     void didEndAudio(const WebSpeechRecognitionHandle&) override;
  59     void didReceiveResults(const WebSpeechRecognitionHandle&, const WebVector<WebSpeechRecognitionResult>& newFinalResults, const WebVector<WebSpeechRecognitionResult>& currentInterimResults) override;
  60     void didReceiveNoMatch(const WebSpeechRecognitionHandle&, const WebSpeechRecognitionResult&) override;
  61     void didReceiveError(const WebSpeechRecognitionHandle&, const WebString& message, WebSpeechRecognizerClient::ErrorCode) override;
  62     void didStart(const WebSpeechRecognitionHandle&) override;
  63     void didEnd(const WebSpeechRecognitionHandle&) override;
  64
  65 private:
  66     SpeechRecognitionClientProxy(WebSpeechRecognizer*);
  67
  68     WebSpeechRecognizer* m_recognizer;
  69 };
  70
  71 } // namespace blink
  72
  73 #endif // SpeechRecognitionClientProxy_h