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#include <wtf/text/AtomicString.h>
31
32namespace WebCore {
33
34    class AccessibilityObject;
35
36    class AccessibilityObjectWrapper : public IUnknown {
37    public:
38        // IUnknown
39        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject) = 0;
40        virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0;
41        virtual ULONG STDMETHODCALLTYPE Release(void) = 0;
42
43        virtual void detach() = 0;
44        bool attached() const { return m_object; }
45        AccessibilityObject* accessibilityObject() const { return m_object; }
46
47        void accessibilityAttributeValue(const AtomicString&, VARIANT*);
48
49    protected:
50        AccessibilityObjectWrapper(AccessibilityObject* obj) : m_object(obj) { }
51        AccessibilityObjectWrapper() : m_object(0) { }
52
53        AccessibilityObject* m_object;
54    };
55
56} // namespace WebCore
57
58#endif // AccessibilityObjectWrapperWin_h
59