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      1 /*
      2  * Copyright (C) 2013 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/crypto/DOMWindowCrypto.h"
     33 
     34 #include "core/frame/LocalDOMWindow.h"
     35 #include "modules/crypto/Crypto.h"
     36 
     37 namespace blink {
     38 
     39 DOMWindowCrypto::DOMWindowCrypto(LocalDOMWindow& window)
     40     : DOMWindowProperty(window.frame())
     41 {
     42 }
     43 
     44 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowCrypto);
     45 
     46 const char* DOMWindowCrypto::supplementName()
     47 {
     48     return "DOMWindowCrypto";
     49 }
     50 
     51 DOMWindowCrypto& DOMWindowCrypto::from(LocalDOMWindow& window)
     52 {
     53     DOMWindowCrypto* supplement = static_cast<DOMWindowCrypto*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
     54     if (!supplement) {
     55         supplement = new DOMWindowCrypto(window);
     56         provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
     57     }
     58     return *supplement;
     59 }
     60 
     61 Crypto* DOMWindowCrypto::crypto(LocalDOMWindow& window)
     62 {
     63     return DOMWindowCrypto::from(window).crypto();
     64 }
     65 
     66 Crypto* DOMWindowCrypto::crypto() const
     67 {
     68     if (!m_crypto && frame())
     69         m_crypto = Crypto::create();
     70     return m_crypto.get();
     71 }
     72 
     73 void DOMWindowCrypto::trace(Visitor* visitor)
     74 {
     75     visitor->trace(m_crypto);
     76     WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
     77     DOMWindowProperty::trace(visitor);
     78 }
     79 
     80 } // namespace blink
     81