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/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* Based on the Itemviews NG project from Trolltech Labs: *
* http://qt.gitorious.org/qt-labs/itemviews-ng *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#ifndef KITEMLISTSELECTIONMANAGER_H
#define KITEMLISTSELECTIONMANAGER_H
#include "dolphin_export.h"
#include <kitemviews/kitemmodelbase.h>
#include <kitemviews/kitemset.h>
#include <QObject>
class KItemModelBase;
/**
* @brief Allows to select and deselect items of a KItemListView.
*/
class DOLPHIN_EXPORT KItemListSelectionManager : public QObject
{
Q_OBJECT
enum RangesRemovingBehaviour {
DiscardRemovedIndex,
AdjustRemovedIndex
};
public:
enum SelectionMode {
Select,
Deselect,
Toggle
};
KItemListSelectionManager(QObject* parent = 0);
virtual ~KItemListSelectionManager();
void setCurrentItem(int current);
int currentItem() const;
void setSelectedItems(const KItemSet& items);
KItemSet selectedItems() const;
bool isSelected(int index) const;
bool hasSelection() const;
void setSelected(int index, int count = 1, SelectionMode mode = Select);
void clearSelection();
void beginAnchoredSelection(int anchor);
void endAnchoredSelection();
bool isAnchoredSelectionActive() const;
KItemModelBase* model() const;
signals:
void currentChanged(int current, int previous);
void selectionChanged(const KItemSet& current, const KItemSet& previous);
private:
void setModel(KItemModelBase* model);
void itemsInserted(const KItemRangeList& itemRanges);
void itemsRemoved(const KItemRangeList& itemRanges);
void itemsMoved(const KItemRange& itemRange, const QList<int>& movedToIndexes);
/**
* Helper method for itemsRemoved. Returns the changed index after removing
* the given range. If the index is part of the range, -1 will be returned.
*/
int indexAfterRangesRemoving(int index, const KItemRangeList& itemRanges, const RangesRemovingBehaviour behaviour) const;
private:
int m_currentItem;
int m_anchorItem;
KItemSet m_selectedItems;
bool m_isAnchoredSelectionActive;
KItemModelBase* m_model;
friend class KItemListController; // Calls setModel()
friend class KItemListView; // Calls itemsInserted(), itemsRemoved() and itemsMoved()
friend class KItemListSelectionManagerTest;
};
#endif
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