src/third_party/WebKit/Source/modules/speech/DOMWindowSpeechSynthesis.cpp

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
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   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
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  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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 "modules/speech/DOMWindowSpeechSynthesis.h"
  33
  34 #include "core/frame/DOMWindow.h"
  35 #include "core/frame/LocalFrame.h"
  36 #include "wtf/PassRefPtr.h"
  37
  38 namespace WebCore {
  39
  40 DOMWindowSpeechSynthesis::DOMWindowSpeechSynthesis(DOMWindow& window)
  41     : DOMWindowProperty(window.frame())
  42 {
  43 }
  44
  45 DOMWindowSpeechSynthesis::~DOMWindowSpeechSynthesis()
  46 {
  47 }
  48
  49 const char* DOMWindowSpeechSynthesis::supplementName()
  50 {
  51     return "DOMWindowSpeechSynthesis";
  52 }
  53
  54 // static
  55 DOMWindowSpeechSynthesis& DOMWindowSpeechSynthesis::from(DOMWindow& window)
  56 {
  57     DOMWindowSpeechSynthesis* supplement = static_cast<DOMWindowSpeechSynthesis*>(WillBeHeapSupplement<DOMWindow>::from(window, supplementName()));
  58     if (!supplement) {
  59         supplement = new DOMWindowSpeechSynthesis(window);
  60         provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
  61     }
  62     return *supplement;
  63 }
  64
  65 // static
  66 SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis(DOMWindow& window)
  67 {
  68     return DOMWindowSpeechSynthesis::from(window).speechSynthesis();
  69 }
  70
  71 SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis()
  72 {
  73     if (!m_speechSynthesis && frame())
  74         m_speechSynthesis = SpeechSynthesis::create(frame()->domWindow()->executionContext());
  75     return m_speechSynthesis.get();
  76 }
  77
  78 void DOMWindowSpeechSynthesis::trace(Visitor* visitor)
  79 {
  80     visitor->trace(m_speechSynthesis);
  81     WillBeHeapSupplement<DOMWindow>::trace(visitor);
  82 }
  83
  84 } // namespace WebCore