historyprovider.cpp [kdelibs/kparts/historyprovider.cpp]

1	/ This file is part of the KDE project*
2	Copyright (C) 2001 Carsten Pfeiffer <pfeiffer@kde.org>
3
4	This library is free software; you can redistribute it and/or
5	modify it under the terms of the GNU Library General Public
6	License as published by the Free Software Foundation; either
7	version 2 of the License, or (at your option) any later version.
8
9	This library is distributed in the hope that it will be useful,
10	but WITHOUT ANY WARRANTY; without even the implied warranty of
11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12	Library General Public License for more details.
13
14	You should have received a copy of the GNU Library General Public License
15	along with this library; see the file COPYING.LIB. If not, write to
16	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17	Boston, MA 02110-1301, USA.
18	*/
19
20	#include "historyprovider.h"
21
22	#include <QtCore/QSet>
23
24	#include <kapplication.h>
25
26	using namespace KParts;
27
28	class KParts::HistoryProviderPrivate
29	{
30	public:
31	HistoryProviderPrivate()
32	: q(`0`)
33	{
34	}
35
36	~HistoryProviderPrivate()
37	{
38	delete q;
39	}
40
41	QSet<QString> dict;
42	HistoryProvider *q;
43	};
44
45	K_GLOBAL_STATIC(HistoryProviderPrivate, historyProviderPrivate)
46
47	HistoryProvider * HistoryProvider::self()
48	{
49	if (!historyProviderPrivate->q) {
50	new HistoryProvider;
51	}
52
53	return historyProviderPrivate->q;
54	}
55
56	bool HistoryProvider::exists()
57	{
58	return historyProviderPrivate->q;
59	}
60
61	HistoryProvider::HistoryProvider( QObject *parent )
62	: QObject ( parent ), d(historyProviderPrivate)
63	{
64	Q_ASSERT(!historyProviderPrivate->q);
65	historyProviderPrivate->q = this;
66	setObjectName("history provider");
67	}
68
69	HistoryProvider::~HistoryProvider()
70	{
71	if (!historyProviderPrivate.isDestroyed() &&
72	historyProviderPrivate->q == this)
73	historyProviderPrivate->q = `0`;
74	}
75
76	bool HistoryProvider::contains( const QString& item ) const
77	{
78	return d->dict.contains( item );
79	}
80
81	void HistoryProvider::insert( const QString& item )
82	{
83	d->dict.insert( item );
84	emit inserted( item );
85	}
86
87	void HistoryProvider::remove( const QString& item )
88	{
89	d->dict.remove( item );
90	}
91
92	void HistoryProvider::clear()
93	{
94	d->dict.clear();
95	emit cleared();
96	}
97
98	#include "historyprovider.moc"
99