1 /* 2 * Copyright (C) 2010 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 are 6 * met: 7 * 8 * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef SpeechInputClient_h 32 #define SpeechInputClient_h 33 34 #include "wtf/Forward.h" 35 36 #if ENABLE(INPUT_SPEECH) 37 38 namespace WebCore { 39 40 class IntRect; 41 class SecurityOrigin; 42 class SpeechInputListener; 43 class Page; 44 45 // Provides an interface for SpeechInput to call into the embedder. 46 class SpeechInputClient { 47 public: 48 // This is the first call made by a listener, registering itself for future callbacks. 49 // When the listener no longer needs speech input (for e.g. when it gets destroyed), 50 // it should set a null listener to stop receiving callbacks. 51 // The client does not take ownership of the pointer. 52 virtual void setListener(SpeechInputListener*) = 0; 53 54 // Starts speech recognition and audio recording. elementRect is the position 55 // of the element where the user clicked in the RootView coordinate system. 56 virtual bool startRecognition(int requestId, const IntRect& elementRect, const AtomicString& language, const String& grammar, SecurityOrigin*) = 0; 57 58 // Stops audio recording and performs recognition with the audio recorded until now 59 // (does not discard audio). 60 virtual void stopRecording(int requestId) = 0; 61 62 // Cancels an ongoing recognition and discards any audio recorded so far. No partial 63 // recognition results are returned to the listener. 64 virtual void cancelRecognition(int requestId) = 0; 65 66 protected: 67 virtual ~SpeechInputClient() { } 68 }; 69 70 void provideSpeechInputTo(Page*, SpeechInputClient*); 71 72 } // namespace WebCore 73 74 #endif // ENABLE(INPUT_SPEECH) 75 76 #endif // SpeechInputClient_h 77
