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 | |
27 | class QAbstractItemModel; |
28 | |
29 | class SelectionModelSynchronizer : public QObject |
30 | { |
31 | Q_OBJECT |
32 | |
33 | public: |
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 | |
44 | private slots: |
45 | void syncedCurrentChanged(const QModelIndex ¤t, 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 ¤t, const QModelIndex &previous); |
52 | void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected); |
53 | |
54 | void selectionModelDestroyed(QObject *object); |
55 | |
56 | private: |
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 | |