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      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 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 "modules/speech/DOMWindowSpeechSynthesis.h"
     33 
     34 #include "core/frame/LocalDOMWindow.h"
     35 #include "core/frame/LocalFrame.h"
     36 #include "wtf/PassRefPtr.h"
     37 
     38 namespace blink {
     39 
     40 DOMWindowSpeechSynthesis::DOMWindowSpeechSynthesis(LocalDOMWindow& window)
     41     : DOMWindowProperty(window.frame())
     42 {
     43 }
     44 
     45 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowSpeechSynthesis);
     46 
     47 const char* DOMWindowSpeechSynthesis::supplementName()
     48 {
     49     return "DOMWindowSpeechSynthesis";
     50 }
     51 
     52 // static
     53 DOMWindowSpeechSynthesis& DOMWindowSpeechSynthesis::from(LocalDOMWindow& window)
     54 {
     55     DOMWindowSpeechSynthesis* supplement = static_cast<DOMWindowSpeechSynthesis*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
     56     if (!supplement) {
     57         supplement = new DOMWindowSpeechSynthesis(window);
     58         provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
     59     }
     60     return *supplement;
     61 }
     62 
     63 // static
     64 SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis(LocalDOMWindow& window)
     65 {
     66     return DOMWindowSpeechSynthesis::from(window).speechSynthesis();
     67 }
     68 
     69 SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis()
     70 {
     71     if (!m_speechSynthesis && frame())
     72         m_speechSynthesis = SpeechSynthesis::create(frame()->domWindow()->executionContext());
     73     return m_speechSynthesis.get();
     74 }
     75 
     76 void DOMWindowSpeechSynthesis::trace(Visitor* visitor)
     77 {
     78     visitor->trace(m_speechSynthesis);
     79     WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
     80     DOMWindowProperty::trace(visitor);
     81 }
     82 
     83 } // namespace blink
     84