Quassel IRC  Pre-Release
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros
selectionmodelsynchronizer.h
Go to the documentation of this file.
1 /***************************************************************************
2  * Copyright (C) 2005-2015 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 &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 
56 private:
57  QAbstractItemModel *_model;
58  QItemSelectionModel _selectionModel;
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