Binding.h [calligra/sheets/Binding.h]

1	/ This file is part of the KDE project*
2	Copyright 2007 Stefan Nikolaus <stefan.nikolaus@kdemail.net>
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	#ifndef CALLIGRA_SHEETS_BINDING
21	#define CALLIGRA_SHEETS_BINDING
22
23	#include <QSharedDataPointer>
24	#include <QVariant>
25
26	#include "Region.h"
27
28	#include "calligra_sheets_export.h"
29
30	class QAbstractItemModel;
31
32	namespace Calligra
33	{
34	namespace Sheets
35	{
36
37	/**
38	* Abstracts read-only access to the ValueStorage.
39	* Useful for KChart (or other apps, that want read-only access to KSpread's data).
40	*
41	* If a cell in the region is updated, the BindingManager informs this Binding, which
42	* in turn informs the model it holds.
43	*/
44	class CALLIGRA_SHEETS_ODF_EXPORT Binding
45	{
46	public:
47	Binding();
48	explicit Binding(const Region& region);
49	Binding(const Binding& other);
50	~Binding();
51
52	bool isEmpty() const;
53
54	QAbstractItemModel* model() const;
55
56	const Region& region() const;
57	void setRegion(const Region& region);
58
59	void update(const Region& region);
60
61	void operator=(const Binding& other);
62	bool operator==(const Binding& other) const;
63	bool operator<(const Binding& other) const;
64
65	private:
66	class Private;
67	QExplicitlySharedDataPointer<Private> d;
68	};
69
70	} // namespace Sheets
71	} // namespace Calligra
72
73	Q_DECLARE_METATYPE(Calligra::Sheets::Binding)
74	Q_DECLARE_TYPEINFO(Calligra::Sheets::Binding, Q_MOVABLE_TYPE);
75
76	#endif // CALLIGRA_SHEETS_BINDING
77