SelectionView.h

/* SayonaraSelectionView.h */
 
/* Copyright (C) 2011-2020 Michael Lugmair (Lucio Carreras)
 *
 * This file is part of sayonara player
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef SAYONARASELECTIONVIEW_H
#define SAYONARASELECTIONVIEW_H
 
#include "Utils/Pimpl.h"
#include <QModelIndex>
 
using ModelIndexRange=QPair<QModelIndex, QModelIndex>; // top left, bottom right
using ModelIndexRanges=QList<ModelIndexRange>;
 
class QAbstractItemView;
class QItemSelection;
class QItemSelectionModel;
class QKeyEvent;
 
class SelectionViewInterface
{
    PIMPL(SelectionViewInterface)
 
public:
    enum class SelectionType
    {
        Rows=0,
        Columns,
        Items
    };
 
    virtual IndexSet selectedItems() const;
 
protected:
    SelectionViewInterface(QAbstractItemView* view);
    virtual ~SelectionViewInterface();
 
    void selectRows(const IndexSet& rows, int minimumColumn=-1, int maximumColumn=-1);
    void selectColumns(const IndexSet& columns, int minimumRow=-1, int maximumRow=-1);
    void selectItems(const IndexSet& indexes);
    void selectAll();
 
    virtual SelectionViewInterface::SelectionType selectionType() const;
 
    virtual int mapModelIndexToIndex(const QModelIndex& idx) const=0;
    virtual ModelIndexRange mapIndexToModelIndexes(int idx) const=0;
 
    IndexSet mapModelIndexesToIndexes(const QModelIndexList& indexes) const;
    ModelIndexRanges mapIndexesToModelIndexRanges(const IndexSet& indexes) const;
 
protected:
    virtual bool handleKeyPress(QKeyEvent* e);
};
 
#endif // SAYONARASELECTIONVIEW_H