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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
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      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
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      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
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     12  * in the documentation and/or other materials provided with the
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     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
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     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     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/speech/SpeechInput.h"
     33 
     34 #if ENABLE(INPUT_SPEECH)
     35 
     36 #include "core/speech/SpeechInputClient.h"
     37 #include "wtf/PassOwnPtr.h"
     38 
     39 namespace WebCore {
     40 
     41 SpeechInput::SpeechInput(SpeechInputClient* client)
     42     : m_client(client)
     43     , m_nextListenerId(1)
     44 {
     45     m_client->setListener(this);
     46 }
     47 
     48 SpeechInput::~SpeechInput()
     49 {
     50     m_client->setListener(0);
     51 }
     52 
     53 PassOwnPtr<SpeechInput> SpeechInput::create(SpeechInputClient* client)
     54 {
     55     return adoptPtr(new SpeechInput(client));
     56 }
     57 
     58 int SpeechInput::registerListener(SpeechInputListener* listener)
     59 {
     60 #if defined(DEBUG)
     61     // Check if already present.
     62     for (HashMap<int, SpeechInputListener*>::iterator it = m_listeners.begin(); it != m_listeners.end(); ++it)
     63         ASSERT(it->value != listener);
     64 #endif
     65 
     66     m_listeners.add(m_nextListenerId, listener);
     67     return m_nextListenerId++;
     68 }
     69 
     70 void SpeechInput::unregisterListener(int listenerId)
     71 {
     72     if (m_listeners.contains(listenerId))
     73         m_listeners.remove(listenerId);
     74 }
     75 
     76 void SpeechInput::didCompleteRecording(int listenerId)
     77 {
     78     // Don't assert if not present as the element might have been removed by the page while
     79     // this event was on the way.
     80     if (m_listeners.contains(listenerId))
     81         m_listeners.get(listenerId)->didCompleteRecording(listenerId);
     82 }
     83 
     84 void SpeechInput::didCompleteRecognition(int listenerId)
     85 {
     86     // Don't assert if not present as the element might have been removed by the page while
     87     // this event was on the way.
     88     if (m_listeners.contains(listenerId))
     89         m_listeners.get(listenerId)->didCompleteRecognition(listenerId);
     90 }
     91 
     92 void SpeechInput::setRecognitionResult(int listenerId, const SpeechInputResultArray& result)
     93 {
     94     // Don't assert if not present as the element might have been removed by the page while
     95     // this event was on the way.
     96     if (m_listeners.contains(listenerId))
     97         m_listeners.get(listenerId)->setRecognitionResult(listenerId, result);
     98 }
     99 
    100 bool SpeechInput::startRecognition(int listenerId, const IntRect& elementRect, const AtomicString& language, const String& grammar, SecurityOrigin* origin)
    101 {
    102     ASSERT(m_listeners.contains(listenerId));
    103     return m_client->startRecognition(listenerId, elementRect, language, grammar, origin);
    104 }
    105 
    106 void SpeechInput::stopRecording(int listenerId)
    107 {
    108     ASSERT(m_listeners.contains(listenerId));
    109     m_client->stopRecording(listenerId);
    110 }
    111 
    112 void SpeechInput::cancelRecognition(int listenerId)
    113 {
    114     ASSERT(m_listeners.contains(listenerId));
    115     m_client->cancelRecognition(listenerId);
    116 }
    117 
    118 const char* SpeechInput::supplementName()
    119 {
    120     return "SpeechInput";
    121 }
    122 
    123 void provideSpeechInputTo(Page* page, SpeechInputClient* client)
    124 {
    125     SpeechInput::provideTo(page, SpeechInput::supplementName(), SpeechInput::create(client));
    126 }
    127 
    128 } // namespace WebCore
    129 
    130 #endif // ENABLE(INPUT_SPEECH)
    131