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      1 /*
      2  * Copyright (c) 2008, Google Inc. All rights reserved.
      3  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef ScriptCachedFrameData_h
     33 #define ScriptCachedFrameData_h
     34 
     35 #include <heap/Strong.h>
     36 #include <wtf/HashMap.h>
     37 
     38 namespace WebCore {
     39     class Frame;
     40     class JSDOMWindow;
     41     class DOMWindow;
     42     class DOMWrapperWorld;
     43 
     44     class ScriptCachedFrameData {
     45         WTF_MAKE_NONCOPYABLE(ScriptCachedFrameData); WTF_MAKE_FAST_ALLOCATED;
     46         typedef HashMap< RefPtr<DOMWrapperWorld>, JSC::Strong<JSDOMWindow> > JSDOMWindowSet;
     47 
     48     public:
     49         ScriptCachedFrameData(Frame*);
     50         ~ScriptCachedFrameData();
     51 
     52         void restore(Frame*);
     53         void clear();
     54         DOMWindow* domWindow() const;
     55 
     56     private:
     57         JSDOMWindowSet m_windows;
     58         DOMWindow* m_domWindow;
     59     };
     60 
     61 } // namespace WebCore
     62 
     63 #endif // ScriptCachedFrameData_h
     64