blob: 90f65b0cb7cd857677e2d50e2cb7b60001f74032 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/****************************************************************************
** $Id: qt/qcleanuphandler.h 3.3.3 edited May 27 2003 $
**
** ...
**
** Copyright (C) 2001-2002 Trolltech AS. All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QCLEANUPHANDLER_H
#define QCLEANUPHANDLER_H
#ifndef QT_H
#include "qptrlist.h"
#endif // QT_H
template<class Type>
class QCleanupHandler
{
public:
QCleanupHandler() : cleanupObjects( 0 ) {}
~QCleanupHandler() { clear(); }
Type* add( Type **object ) {
if ( !cleanupObjects )
cleanupObjects = new QPtrList<Type*>;
cleanupObjects->insert( 0, object );
return *object;
}
void remove( Type **object ) {
if ( !cleanupObjects )
return;
if ( cleanupObjects->findRef( object ) >= 0 )
(void) cleanupObjects->take();
}
bool isEmpty() const {
return cleanupObjects ? cleanupObjects->isEmpty() : TRUE;
}
void clear() {
if ( !cleanupObjects )
return;
QPtrListIterator<Type*> it( *cleanupObjects );
Type **object;
while ( ( object = it.current() ) ) {
delete *object;
*object = 0;
cleanupObjects->remove( object );
}
delete cleanupObjects;
cleanupObjects = 0;
}
private:
QPtrList<Type*> *cleanupObjects;
};
template<class Type>
class QSingleCleanupHandler
{
public:
QSingleCleanupHandler() : object( 0 ) {}
~QSingleCleanupHandler() {
if ( object ) {
delete *object;
*object = 0;
}
}
Type* set( Type **o ) {
object = o;
return *object;
}
void reset() { object = 0; }
private:
Type **object;
};
template<class Type>
class QSharedCleanupHandler
{
public:
QSharedCleanupHandler() : object( 0 ) {}
~QSharedCleanupHandler() {
if ( object ) {
if ( (*object)->deref() )
delete *object;
*object = 0;
}
}
Type* set( Type **o ) {
object = o;
return *object;
}
void reset() { object = 0; }
private:
Type **object;
};
#endif //QCLEANUPHANDLER_H
|
