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      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 #include "config.h"
     32 #include "core/page/SpeechInput.h"
     33 
     34 #if ENABLE(INPUT_SPEECH)
     35 
     36 #include "core/page/SpeechInputClient.h"
     37 #include "core/page/SpeechInputListener.h"
     38 #include "wtf/PassOwnPtr.h"
     39 
     40 namespace WebCore {
     41 
     42 SpeechInput::SpeechInput(SpeechInputClient* client)
     43     : m_client(client)
     44     , m_nextListenerId(1)
     45 {
     46     m_client->setListener(this);
     47 }
     48 
     49 SpeechInput::~SpeechInput()
     50 {
     51     m_client->setListener(0);
     52 }
     53 
     54 PassOwnPtr<SpeechInput> SpeechInput::create(SpeechInputClient* client)
     55 {
     56     return adoptPtr(new SpeechInput(client));
     57 }
     58 
     59 int SpeechInput::registerListener(SpeechInputListener* listener)
     60 {
     61 #if defined(DEBUG)
     62     // Check if already present.
     63     for (HashMap<int, SpeechInputListener*>::iterator it = m_listeners.begin(); it != m_listeners.end(); ++it)
     64       ASSERT(it->value != listener);
     65 #endif
     66 
     67     m_listeners.add(m_nextListenerId, listener);
     68     return m_nextListenerId++;
     69 }
     70 
     71 void SpeechInput::unregisterListener(int listenerId)
     72 {
     73     if (m_listeners.contains(listenerId))
     74         m_listeners.remove(listenerId);
     75 }
     76 
     77 void SpeechInput::didCompleteRecording(int listenerId)
     78 {
     79     // Don't assert if not present as the element might have been removed by the page while
     80     // this event was on the way.
     81     if (m_listeners.contains(listenerId))
     82         m_listeners.get(listenerId)->didCompleteRecording(listenerId);
     83 }
     84 
     85 void SpeechInput::didCompleteRecognition(int listenerId)
     86 {
     87     // Don't assert if not present as the element might have been removed by the page while
     88     // this event was on the way.
     89     if (m_listeners.contains(listenerId))
     90         m_listeners.get(listenerId)->didCompleteRecognition(listenerId);
     91 }
     92 
     93 void SpeechInput::setRecognitionResult(int listenerId, const SpeechInputResultArray& result)
     94 {
     95     // Don't assert if not present as the element might have been removed by the page while
     96     // this event was on the way.
     97     if (m_listeners.contains(listenerId))
     98         m_listeners.get(listenerId)->setRecognitionResult(listenerId, result);
     99 }
    100 
    101 bool SpeechInput::startRecognition(int listenerId, const IntRect& elementRect, const AtomicString& language, const String& grammar, SecurityOrigin* origin)
    102 {
    103     ASSERT(m_listeners.contains(listenerId));
    104     return m_client->startRecognition(listenerId, elementRect, language, grammar, origin);
    105 }
    106 
    107 void SpeechInput::stopRecording(int listenerId)
    108 {
    109     ASSERT(m_listeners.contains(listenerId));
    110     m_client->stopRecording(listenerId);
    111 }
    112 
    113 void SpeechInput::cancelRecognition(int listenerId)
    114 {
    115     ASSERT(m_listeners.contains(listenerId));
    116     m_client->cancelRecognition(listenerId);
    117 }
    118 
    119 const char* SpeechInput::supplementName()
    120 {
    121     return "SpeechInput";
    122 }
    123 
    124 void provideSpeechInputTo(Page* page, SpeechInputClient* client)
    125 {
    126     SpeechInput::provideTo(page, SpeechInput::supplementName(), SpeechInput::create(client));
    127 }
    128 
    129 } // namespace WebCore
    130 
    131 #endif // ENABLE(INPUT_SPEECH)
    132