dwitemdelegate.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2007-11-15
 * Description : widget item delegate for setup collection view
 *
 * Copyright (C) 2015-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2007-2008 by Rafael Fernández López <ereslibre at kde dot org>
 * Copyright (C) 2008      by Kevin Ottens <ervin at kde dot org>
 *
 * 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, 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.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_DW_ITEM_DELEGATE_H
#define DIGIKAM_DW_ITEM_DELEGATE_H
 
// Qt includes
 
#include <QEvent>
#include <QList>
#include <QPersistentModelIndex>
#include <QAbstractItemDelegate>
 
// Local includes
 
#include "dwitemdelegate_p.h"
#include "digikam_export.h"
 
class QObject;
class QPainter;
class QStyleOption;
class QStyleOptionViewItem;
class QAbstractItemView;
class QItemSelection;
 
namespace Digikam
{
 
class DWItemDelegatePool;
class DWItemDelegatePrivate;
 
class DIGIKAM_GUI_EXPORT DWItemDelegate : public QAbstractItemDelegate
{
    Q_OBJECT
 
public:
 
    explicit DWItemDelegate(QAbstractItemView* const itemView, QObject* const parent = nullptr);
    ~DWItemDelegate()                                                                             override;
 
    QAbstractItemView* itemView()                                                           const;
 
    QPersistentModelIndex focusedIndex()                                                    const;
 
protected:
 
    virtual QList<QWidget*> createItemWidgets(const QModelIndex& index)                 const = 0;
 
    virtual void updateItemWidgets(const QList<QWidget*>& widgets,
                                   const QStyleOptionViewItem& option,
                                   const QPersistentModelIndex& index)                  const = 0;
 
    void setBlockedEventTypes(QWidget* const widget, const QList<QEvent::Type>& types)  const;
 
    QList<QEvent::Type> blockedEventTypes(QWidget* const widget)                        const;
 
private:
 
    friend class DWItemDelegatePool;
    friend class DWItemDelegateEventListener;
 
    DWItemDelegatePrivate* const d;
 
    Q_PRIVATE_SLOT(d, void slotDWRowsInserted(const QModelIndex&, int, int))
    Q_PRIVATE_SLOT(d, void slotDWRowsAboutToBeRemoved(const QModelIndex&, int, int))
    Q_PRIVATE_SLOT(d, void slotDWRowsRemoved(const QModelIndex&, int, int))
    Q_PRIVATE_SLOT(d, void slotDWDataChanged(const QModelIndex&, const QModelIndex&))
    Q_PRIVATE_SLOT(d, void slotDWLayoutChanged())
    Q_PRIVATE_SLOT(d, void slotDWModelReset())
    Q_PRIVATE_SLOT(d, void slotDWSelectionChanged(const QItemSelection&, const QItemSelection&))
};
 
} // namespace Digikam
 
Q_DECLARE_METATYPE(QList<QEvent::Type>)
 
#endif // DIGIKAM_DW_ITEM_DELEGATE_H