|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the Qt3Support module of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 #ifndef Q3CLEANUPHANDLER_H |
|
43 #define Q3CLEANUPHANDLER_H |
|
44 |
|
45 #include <QtCore/qlist.h> |
|
46 |
|
47 QT_BEGIN_HEADER |
|
48 |
|
49 QT_BEGIN_NAMESPACE |
|
50 |
|
51 QT_MODULE(Qt3SupportLight) |
|
52 |
|
53 template<class T> |
|
54 class Q3CleanupHandler |
|
55 { |
|
56 QListData p; |
|
57 public: |
|
58 inline Q3CleanupHandler() |
|
59 { p.d = 0; } |
|
60 ~Q3CleanupHandler() |
|
61 { |
|
62 if (p.d) { |
|
63 for (int i = 0; i < p.size(); ++i) { |
|
64 T** t = static_cast<T**>(*p.at(i)); |
|
65 delete *t; |
|
66 *t = 0; |
|
67 } |
|
68 qFree(p.d); |
|
69 p.d = 0; |
|
70 } |
|
71 } |
|
72 |
|
73 T* add(T **object) |
|
74 { |
|
75 if (!p.d) { |
|
76 p.d = &QListData::shared_null; |
|
77 p.d->ref.ref(); |
|
78 p.detach(); |
|
79 } |
|
80 *p.prepend() = object; |
|
81 return *object; |
|
82 } |
|
83 void remove(T **object) |
|
84 { |
|
85 if (p.d) |
|
86 for (int i = 0; i < p.size(); ++i) |
|
87 if (*p.at(i) == object) |
|
88 p.remove(i--); |
|
89 } |
|
90 }; |
|
91 |
|
92 template<class T> |
|
93 class Q3SingleCleanupHandler |
|
94 { |
|
95 T **object; |
|
96 public: |
|
97 inline Q3SingleCleanupHandler() |
|
98 : object(0) {} |
|
99 inline ~Q3SingleCleanupHandler() |
|
100 { if (object) { delete *object; *object = 0; } } |
|
101 inline T* set(T **o) |
|
102 { object = o; return *object; } |
|
103 inline void reset() { object = 0; } |
|
104 }; |
|
105 |
|
106 QT_END_NAMESPACE |
|
107 |
|
108 QT_END_HEADER |
|
109 |
|
110 #endif //Q3CLEANUPHANDLER_H |