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      1 /*
      2  * Copyright (C) 2008 Apple 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 
     27 #ifndef AccessibilityObjectWrapperWin_h
     28 #define AccessibilityObjectWrapperWin_h
     29 
     30 namespace WebCore {
     31 
     32     class AccessibilityObject;
     33 
     34     class AccessibilityObjectWrapper : public IUnknown {
     35     public:
     36         // IUnknown
     37         virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject) = 0;
     38         virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0;
     39         virtual ULONG STDMETHODCALLTYPE Release(void) = 0;
     40 
     41         virtual void detach() = 0;
     42         bool attached() const { return m_object; }
     43         AccessibilityObject* accessibilityObject() const { return m_object; }
     44 
     45     protected:
     46         AccessibilityObjectWrapper(AccessibilityObject* obj) : m_object(obj) { }
     47         AccessibilityObjectWrapper() : m_object(0) { }
     48 
     49         AccessibilityObject* m_object;
     50     };
     51 
     52 } // namespace WebCore
     53 
     54 #endif // AccessibilityObjectWrapperWin_h
     55