text: /*
   * Copyright (C) 2013 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * 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.
   *     * Neither the name of Google Inc. nor the names of its
   * 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
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "modules/crypto/DOMWindowCrypto.h"
  
  #include "core/frame/LocalDOMWindow.h"
  #include "modules/crypto/Crypto.h"
  
  namespace blink {
  
  DOMWindowCrypto::DOMWindowCrypto(LocalDOMWindow& window)
      : DOMWindowProperty(window.frame())
  {
  }
  
  const char* DOMWindowCrypto::supplementName()
  {
      return "DOMWindowCrypto";
  }
  
  DOMWindowCrypto& DOMWindowCrypto::from(LocalDOMWindow& window)
  {
      DOMWindowCrypto* supplement = static_cast<DOMWindowCrypto*>(Supplement<LocalDOMWindow>::from(window, supplementName()));
      if (!supplement) {
          supplement = new DOMWindowCrypto(window);
          provideTo(window, supplementName(), supplement);
      }
      return *supplement;
  }
  
  Crypto* DOMWindowCrypto::crypto(DOMWindow& window)
  {
      return DOMWindowCrypto::from(toLocalDOMWindow(window)).crypto();
  }
  
  Crypto* DOMWindowCrypto::crypto() const
  {
      if (!m_crypto && frame())
          m_crypto = Crypto::create();
      return m_crypto.get();
  }
  
  DEFINE_TRACE(DOMWindowCrypto)
  {
      visitor->trace(m_crypto);
      Supplement<LocalDOMWindow>::trace(visitor);
      DOMWindowProperty::trace(visitor);
  }
  
  } // namespace blink
  