1/***************************************************************************
2 * Copyright (C) 2005-2014 by the Quassel Project *
3 * devel@quassel-irc.org *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
20
21#ifndef _SELECTIONMODELSYNCHRONIZER_H_
22#define _SELECTIONMODELSYNCHRONIZER_H_
23
24#include <QObject>
25#include <QItemSelectionModel>
26
27class QAbstractItemModel;
28
29class SelectionModelSynchronizer : public QObject
30{
31 Q_OBJECT
32
33public:
34 SelectionModelSynchronizer(QAbstractItemModel *parent = 0);
35
36 void synchronizeSelectionModel(QItemSelectionModel *selectionModel);
37 void removeSelectionModel(QItemSelectionModel *selectionModel);
38
39 inline QAbstractItemModel *model() { return _model; }
40 inline QItemSelectionModel *selectionModel() const { return const_cast<QItemSelectionModel *>(&_selectionModel); }
41 inline QModelIndex currentIndex() const { return _selectionModel.currentIndex(); }
42 inline QItemSelection currentSelection() const { return _selectionModel.selection(); }
43
44private slots:
45 void syncedCurrentChanged(const QModelIndex &current, const QModelIndex &previous);
46 void syncedSelectionChanged(const QItemSelection &selected, const QItemSelection &previous);
47
48 void setCurrentIndex(const QModelIndex &index);
49 void setCurrentSelection(const QItemSelection &selection);
50
51 void currentChanged(const QModelIndex &current, const QModelIndex &previous);
52 void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
53
54 void selectionModelDestroyed(QObject *object);
55
56private:
57 QAbstractItemModel *_model;
58 QItemSelectionModel _selectionModel;
59 bool _changeCurrentEnabled;
60 bool _changeSelectionEnabled;
61
62 bool checkBaseModel(QItemSelectionModel *model);
63 QModelIndex mapFromSource(const QModelIndex &sourceIndex, const QItemSelectionModel *selectionModel);
64 QItemSelection mapSelectionFromSource(const QItemSelection &sourceSelection, const QItemSelectionModel *selectionModel);
65 QModelIndex mapToSource(const QModelIndex &index, QItemSelectionModel *selectionModel);
66 QItemSelection mapSelectionToSource(const QItemSelection &selection, QItemSelectionModel *selectionModel);
67
68 QSet<QItemSelectionModel *> _selectionModels;
69};
70
71
72#endif
73