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1 /* | |
2 * Copyright (C) 2009 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 #ifndef WebNode_h | |
32 #define WebNode_h | |
33 | |
34 #include "WebCommon.h" | |
35 #include "WebString.h" | |
36 | |
37 namespace WebCore { class Node; } | |
38 #if WEBKIT_IMPLEMENTATION | |
39 namespace WTF { template <typename T> class PassRefPtr; } | |
40 #endif | |
41 | |
42 namespace WebKit { | |
43 class WebFrame; | |
44 | |
45 // Provides readonly access to some properties of a DOM node. | |
46 class WebNode { | |
47 public: | |
48 virtual ~WebNode() { reset(); } | |
49 | |
50 WebNode() : m_private(0) { } | |
51 WebNode(const WebNode& n) : m_private(0) { assign(n); } | |
52 WebNode& operator=(const WebNode& n) | |
53 { | |
54 assign(n); | |
55 return *this; | |
56 } | |
57 | |
58 WEBKIT_API void reset(); | |
59 WEBKIT_API void assign(const WebNode&); | |
60 | |
61 bool isNull() const { return !m_private; } | |
62 | |
63 #if WEBKIT_IMPLEMENTATION | |
64 WebNode(const WTF::PassRefPtr<WebCore::Node>&); | |
65 WebNode& operator=(const WTF::PassRefPtr<WebCore::Node>&); | |
66 operator WTF::PassRefPtr<WebCore::Node>() const; | |
67 #endif | |
68 | |
69 WEBKIT_API WebNode parentNode() const; | |
70 WEBKIT_API WebString nodeName() const; | |
71 WebFrame* frame(); | |
72 | |
73 template<typename T> T toElement() | |
74 { | |
75 T res; | |
76 res.m_private = m_private; | |
77 return res; | |
78 } | |
79 | |
80 protected: | |
81 typedef WebCore::Node WebNodePrivate; | |
82 void assign(WebNodePrivate*); | |
83 WebNodePrivate* m_private; | |
84 | |
85 template<typename T> T* unwrap() | |
86 { | |
87 return static_cast<T*>(m_private); | |
88 } | |
89 | |
90 template<typename T> const T* constUnwrap() const | |
91 { | |
92 return static_cast<const T*>(m_private); | |
93 } | |
94 }; | |
95 | |
96 } // namespace WebKit | |
97 | |
98 #endif | |
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