2 Copyright (C) 2010 Klarälvdalens Datakonsult AB,
3 a KDAB Group company, info@kdab.net,
4 author Stephen Kelly <stephen@kdab.com>
6 This library is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Library General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or (at your
9 option) any later version.
11 This library is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
14 License for more details.
16 You should have received a copy of the GNU Library General Public License
17 along with this library; see the file COPYING.LIB. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 #ifndef KLINKITEMSELECTIONMODEL_H
23 #define KLINKITEMSELECTIONMODEL_H
25 #include <QtCore/QObject>
26 #include <QtGui/QItemSelectionModel>
27 #include <QtGui/QAbstractProxyModel>
31 // #include "kdeui_export.h"
32 // #include "klinkitemselectionmodel_p.hxx"
34 #include "kmodelindexproxymapper.hxx"
36 class KLinkItemSelectionModelPrivate;
38 class KLinkItemSelectionModel : public QItemSelectionModel
42 KLinkItemSelectionModel(QAbstractItemModel *targetModel, QItemSelectionModel *linkedItemSelectionModel, QObject *parent = 0);
43 ~KLinkItemSelectionModel();
44 /* reimp */ void select(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
45 /* reimp */ void select(const QItemSelection &selection, QItemSelectionModel::SelectionFlags command);
48 KLinkItemSelectionModelPrivate * const d_ptr;
51 Q_DECLARE_PRIVATE(KLinkItemSelectionModel)
52 Q_PRIVATE_SLOT( d_func(), void sourceSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected))
57 // QAbstractProxyModel::mapSelectionFromSource creates invalid ranges to we filter
58 // those out manually in a loop. Hopefully fixed in Qt 4.7.2, so we ifdef it out.
59 // http://qt.gitorious.org/qt/qt/merge_requests/2474
60 // http://qt.gitorious.org/qt/qt/merge_requests/831
61 #if QT_VERSION < 0x040702
62 #define RANGE_FIX_HACK
66 static QItemSelection klink_removeInvalidRanges(const QItemSelection &selection)
68 // std::cout<< " klink_removeInvalidRanges " << std::endl;
69 QItemSelection result;
70 Q_FOREACH(const QItemSelectionRange &range, selection)
73 // Q_FOREACH(const QModelIndex &i, range.indexes ())
75 //// std::cout<< " =====> " << i.data().toString().toStdString() << std::endl;
79 // std::cout<< " is VALID !!"<< std::endl;
87 class KLinkItemSelectionModelPrivate
90 KLinkItemSelectionModelPrivate(KLinkItemSelectionModel *proxySelectionModel, QAbstractItemModel *model,
91 QItemSelectionModel *linkedItemSelectionModel)
92 : q_ptr(proxySelectionModel),
94 m_linkedItemSelectionModel(linkedItemSelectionModel),
95 m_ignoreCurrentChanged(false),
96 m_indexMapper(new KModelIndexProxyMapper(model, linkedItemSelectionModel->model(), proxySelectionModel))
100 Q_DECLARE_PUBLIC(KLinkItemSelectionModel)
101 KLinkItemSelectionModel * const q_ptr;
104 bool assertSelectionValid(const QItemSelection &selection) const {
105 foreach(const QItemSelectionRange &range, selection) {
106 // if (!range.isValid()) {
107 // kDebug() << selection;
110 Q_ASSERT(range.isValid());
115 void sourceSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
119 Q_Q(KLinkItemSelectionModel);
120 #ifdef RANGE_FIX_HACK
121 // std::cout<<"XXXXXXXXXXXXX sourceSelectionChanged!!!!!!!! RANGE_FIX_HACK"<<std::endl;
122 QItemSelection _selected = klink_removeInvalidRanges(selected);
123 QItemSelection _deselected = klink_removeInvalidRanges(deselected);
125 // std::cout<<"XXXXXXXXXXXXX sourceSelectionChanged!!!!!!!! "<<std::endl;
126 QItemSelection _selected = selected;
127 QItemSelection _deselected = deselected;
129 Q_ASSERT(assertSelectionValid(_selected));
130 Q_ASSERT(assertSelectionValid(_deselected));
132 // std::cout << "XXXXXXXXXXXXX _selected.count() " << _selected.count() << std::endl;
133 // std::cout << "XXXXXXXXXXXXX _deselected.count() " << _deselected.count() << std::endl;
135 const QItemSelection mappedDeselection = m_indexMapper->mapSelectionRightToLeft(_deselected);
136 const QItemSelection mappedSelection = m_indexMapper->mapSelectionRightToLeft(_selected);
138 // const QItemSelection mappedDeselection = _deselected;
139 // const QItemSelection mappedSelection = _selected;
141 // std::cout << "XXXXXXXXXXXXX mappedSelection.count() " << mappedSelection.count() << std::endl;
142 // std::cout << "XXXXXXXXXXXXX mappedDeselection.count() " << mappedDeselection.count() << std::endl;
144 q->QItemSelectionModel::select(mappedDeselection, QItemSelectionModel::Deselect);
145 q->QItemSelectionModel::select(mappedSelection, QItemSelectionModel::Select);
147 // q->select(mappedDeselection, QItemSelectionModel::Deselect);
148 // q->select(mappedSelection, QItemSelectionModel::Select);
153 QAbstractItemModel * const m_model;
154 QItemSelectionModel * const m_linkedItemSelectionModel;
155 bool m_ignoreCurrentChanged;
156 KModelIndexProxyMapper * const m_indexMapper;