/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#include "modules/speech/DOMWindowSpeechSynthesis.h"

#include "core/dom/ExecutionContext.h"
#include "core/frame/LocalDOMWindow.h"
#include "core/frame/LocalFrame.h"
#include "platform/bindings/ScriptState.h"
#include "platform/wtf/RefPtr.h"

namespace blink {

DOMWindowSpeechSynthesis::DOMWindowSpeechSynthesis(LocalDOMWindow& window)
    : Supplement<LocalDOMWindow>(window) {}

const char* DOMWindowSpeechSynthesis::SupplementName() {
  return "DOMWindowSpeechSynthesis";
}

// static
DOMWindowSpeechSynthesis& DOMWindowSpeechSynthesis::From(
    LocalDOMWindow& window) {
  DOMWindowSpeechSynthesis* supplement = static_cast<DOMWindowSpeechSynthesis*>(
      Supplement<LocalDOMWindow>::From(window, SupplementName()));
  if (!supplement) {
    supplement = new DOMWindowSpeechSynthesis(window);
    ProvideTo(window, SupplementName(), supplement);
  }
  return *supplement;
}

// static
SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis(
    ScriptState* script_state,
    LocalDOMWindow& window) {
  return DOMWindowSpeechSynthesis::From(window).speechSynthesis(script_state);
}

SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis(
    ScriptState* script_state) {
  if (!speech_synthesis_) {
    speech_synthesis_ =
        SpeechSynthesis::Create(ExecutionContext::From(script_state));
  }
  return speech_synthesis_;
}

void DOMWindowSpeechSynthesis::Trace(blink::Visitor* visitor) {
  visitor->Trace(speech_synthesis_);
  Supplement<LocalDOMWindow>::Trace(visitor);
}

}  // namespace blink