1/*
2 This file is part of libkabc.
3
4 Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org>
5
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public
8 License as published by the Free Software Foundation; either
9 version 2 of the License, or (at your option) any later version.
10
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
15
16 You should have received a copy of the GNU Library General Public License
17 along with this library; see the file COPYING.LIB. If not, write to
18 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 Boston, MA 02110-1301, USA.
20*/
21#ifndef KABC_LOCKNULL_H
22#define KABC_LOCKNULL_H
23
24#include "lock.h"
25#include <QtCore/QString>
26
27namespace KABC {
28
29/**
30 This class provides a lock without actually locking. It can be constructed in
31 two ways: One that let all locks succeed and one that let all locks fail.
32*/
33class KABC_DEPRECATED_EXPORT LockNull : public Lock
34{
35 public:
36 /**
37 Creates an instance of the null lock.
38
39 @param allowAccess if @c true all calls to lock() will "succeed",
40 if @c false all calls to lock() will "fail"
41 */
42 LockNull( bool allowAccess );
43 ~LockNull();
44
45 bool lock();
46 bool unlock();
47
48 QString error() const;
49
50 private:
51 class Private;
52 Private *const d;
53};
54
55}
56
57#endif
58