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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #ifndef INCLUDED_SW_INC_INDEX_HXX
20 : #define INCLUDED_SW_INC_INDEX_HXX
21 :
22 : #include <sal/types.h>
23 : #include <tools/rtti.hxx>
24 : #include <swdllapi.h>
25 :
26 : class SwIndexReg;
27 : struct SwPosition;
28 :
29 : /// Marks a character position inside a document model node.
30 : class SW_DLLPUBLIC SwIndex
31 : {
32 : private:
33 : friend class SwIndexReg;
34 :
35 : sal_Int32 m_nIndex;
36 : SwIndexReg * m_pIndexReg;
37 : // doubly linked list of Indexes registered at m_pIndexReg
38 : SwIndex * m_pNext;
39 : SwIndex * m_pPrev;
40 :
41 : SwIndex& ChgValue( const SwIndex& rIdx, sal_Int32 nNewValue );
42 : void Init(sal_Int32 const nIdx);
43 : void Remove();
44 :
45 : public:
46 : explicit SwIndex(SwIndexReg *const pReg, sal_Int32 const nIdx = 0);
47 : SwIndex( const SwIndex & );
48 : SwIndex( const SwIndex &, short nDiff );
49 0 : ~SwIndex() { Remove(); }
50 :
51 : SwIndex& operator=( sal_Int32 const );
52 : SwIndex& operator=( const SwIndex & );
53 :
54 : sal_Int32 operator++();
55 : sal_Int32 operator--();
56 : sal_Int32 operator++(int);
57 : sal_Int32 operator--(int);
58 :
59 : sal_Int32 operator+=( sal_Int32 const );
60 : sal_Int32 operator-=( sal_Int32 const );
61 : sal_Int32 operator+=( const SwIndex& );
62 : sal_Int32 operator-=( const SwIndex& );
63 :
64 : bool operator< ( const SwIndex& ) const;
65 : bool operator<=( const SwIndex& ) const;
66 : bool operator> ( const SwIndex& ) const;
67 : bool operator>=( const SwIndex& ) const;
68 :
69 0 : bool operator< ( sal_Int32 const nVal ) const { return m_nIndex < nVal; }
70 0 : bool operator<=( sal_Int32 const nVal ) const { return m_nIndex <= nVal; }
71 0 : bool operator> ( sal_Int32 const nVal ) const { return m_nIndex > nVal; }
72 0 : bool operator>=( sal_Int32 const nVal ) const { return m_nIndex >= nVal; }
73 0 : bool operator==( sal_Int32 const nVal ) const { return m_nIndex == nVal; }
74 0 : bool operator!=( sal_Int32 const nVal ) const { return m_nIndex != nVal; }
75 :
76 0 : bool operator==( const SwIndex& rSwIndex ) const
77 : {
78 0 : return (m_nIndex == rSwIndex.m_nIndex)
79 0 : && (m_pIndexReg == rSwIndex.m_pIndexReg);
80 : }
81 :
82 0 : bool operator!=( const SwIndex& rSwIndex ) const
83 : {
84 0 : return (m_nIndex != rSwIndex.m_nIndex)
85 0 : || (m_pIndexReg != rSwIndex.m_pIndexReg);
86 : }
87 :
88 0 : sal_Int32 GetIndex() const { return m_nIndex; }
89 :
90 : // Assignments without creating a temporary object.
91 : SwIndex &Assign(SwIndexReg *, sal_Int32);
92 :
93 : // Returns pointer to IndexArray (for RTTI at SwIndexReg).
94 0 : const SwIndexReg* GetIdxReg() const { return m_pIndexReg; }
95 : };
96 :
97 : class SwIndexReg
98 : {
99 : friend class SwIndex;
100 : friend bool sw_PosOk(const SwPosition & aPos);
101 :
102 : const SwIndex * m_pFirst;
103 : const SwIndex * m_pLast;
104 :
105 : protected:
106 : virtual void Update( SwIndex const & rPos, const sal_Int32 nChangeLen,
107 : const bool bNegative = false, const bool bDelete = false );
108 :
109 : void ChkArr();
110 :
111 0 : bool HasAnyIndex() const { return 0 != m_pFirst; }
112 :
113 : public:
114 : SwIndexReg();
115 : virtual ~SwIndexReg();
116 :
117 : /// rtti, derived classes might do the same. If so, one can cast typesavely
118 : /// via SwIndexReg.
119 : TYPEINFO();
120 :
121 : void MoveTo( SwIndexReg& rArr );
122 : };
123 :
124 : #ifndef DBG_UTIL
125 :
126 0 : inline sal_Int32 SwIndex::operator++()
127 : {
128 0 : return ChgValue( *this, m_nIndex+1 ).m_nIndex;
129 : }
130 :
131 : inline sal_Int32 SwIndex::operator--()
132 : {
133 : return ChgValue( *this, m_nIndex-1 ).m_nIndex;
134 : }
135 :
136 0 : inline sal_Int32 SwIndex::operator++(int)
137 : {
138 0 : sal_Int32 const nOldIndex = m_nIndex;
139 0 : ChgValue( *this, m_nIndex+1 );
140 0 : return nOldIndex;
141 : }
142 :
143 0 : inline sal_Int32 SwIndex::operator--(int)
144 : {
145 0 : sal_Int32 const nOldIndex = m_nIndex;
146 0 : ChgValue( *this, m_nIndex-1 );
147 0 : return nOldIndex;
148 : }
149 :
150 0 : inline sal_Int32 SwIndex::operator+=( sal_Int32 const nVal )
151 : {
152 0 : return ChgValue( *this, m_nIndex + nVal ).m_nIndex;
153 : }
154 :
155 0 : inline sal_Int32 SwIndex::operator-=( sal_Int32 const nVal )
156 : {
157 0 : return ChgValue( *this, m_nIndex - nVal ).m_nIndex;
158 : }
159 :
160 : inline sal_Int32 SwIndex::operator+=( const SwIndex& rIndex )
161 : {
162 : return ChgValue( *this, m_nIndex + rIndex.m_nIndex ).m_nIndex;
163 : }
164 :
165 0 : inline sal_Int32 SwIndex::operator-=( const SwIndex& rIndex )
166 : {
167 0 : return ChgValue( *this, m_nIndex - rIndex.m_nIndex ).m_nIndex;
168 : }
169 :
170 0 : inline bool SwIndex::operator< ( const SwIndex& rIndex ) const
171 : {
172 0 : return m_nIndex < rIndex.m_nIndex;
173 : }
174 :
175 0 : inline bool SwIndex::operator<=( const SwIndex& rIndex ) const
176 : {
177 0 : return m_nIndex <= rIndex.m_nIndex;
178 : }
179 :
180 0 : inline bool SwIndex::operator> ( const SwIndex& rIndex ) const
181 : {
182 0 : return m_nIndex > rIndex.m_nIndex;
183 : }
184 :
185 0 : inline bool SwIndex::operator>=( const SwIndex& rIndex ) const
186 : {
187 0 : return m_nIndex >= rIndex.m_nIndex;
188 : }
189 :
190 0 : inline SwIndex& SwIndex::operator= ( sal_Int32 const nVal )
191 : {
192 0 : if (m_nIndex != nVal)
193 : {
194 0 : ChgValue( *this, nVal );
195 : }
196 0 : return *this;
197 : }
198 :
199 : #endif // ifndef DBG_UTIL
200 :
201 : #endif
202 :
203 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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