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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
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Copyright (c) 2009 Stephen Kelly <steveire@gmail.com>
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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*/
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#ifndef INDEXFINDER_H
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#define INDEXFINDER_H
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#include <QModelIndex>
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class IndexFinder
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{
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public:
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IndexFinder(QList<int> rows = QList<int>()) : m_rows(rows), m_model(0) {}
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IndexFinder(const QAbstractItemModel *model, QList<int> rows = QList<int>() )
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: m_rows(rows), m_model(model)
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{
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Q_ASSERT(model);
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}
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QModelIndex getIndex() const
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{
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if(!m_model)
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return QModelIndex();
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static const int col = 0;
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QModelIndex parent = QModelIndex();
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QListIterator<int> i(m_rows);
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while (i.hasNext())
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{
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parent = m_model->index(i.next(), col, parent);
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Q_ASSERT(parent.isValid());
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}
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return parent;
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}
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static IndexFinder indexToIndexFinder(const QModelIndex &_idx)
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{
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if (!_idx.isValid())
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return IndexFinder();
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QList<int> list;
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QModelIndex idx = _idx;
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while (idx.isValid())
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{
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list.prepend(idx.row());
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idx = idx.parent();
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}
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return IndexFinder(_idx.model(), list);
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}
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bool operator==( const IndexFinder &other ) const
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{
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return (m_rows == other.m_rows && m_model == other.m_model );
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}
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QList<int> rows() const { return m_rows; }
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void appendRow(int row) { m_rows.append(row); }
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void setRows( const QList<int> &rows ) { m_rows = rows; }
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void setModel(QAbstractItemModel *model) { m_model = model; }
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private:
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QList<int> m_rows;
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const QAbstractItemModel * m_model;
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};
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Q_DECLARE_METATYPE( IndexFinder )
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#endif
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