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/***************************************************************************
* Copyright (C) 2012 by Peter Penz <[email protected]> *
* *
* 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 KITEMLISTHEADER_H
#define KITEMLISTHEADER_H
#include "dolphin_export.h"
#include <QHash>
#include <QObject>
class KItemListHeaderWidget;
class KItemListView;
/**
* @brief Provides access to the header of a KItemListView.
*
* Each column of the header represents a visible role
* accessible by KItemListView::visibleRoles().
*/
class DOLPHIN_EXPORT KItemListHeader : public QObject
{
Q_OBJECT
public:
virtual ~KItemListHeader();
/**
* If set to true, KItemListView will automatically adjust the
* widths of the columns. If set to false, the size can be
* manually adjusted by KItemListHeader::setColumnWidth().
*/
void setAutomaticColumnResizing(bool automatic);
bool automaticColumnResizing() const;
/**
* Sets the width of the column for the given role. Note that
* the width only gets applied if KItemListHeader::automaticColumnResizing()
* has been turned off.
*/
void setColumnWidth(const QByteArray& role, qreal width);
qreal columnWidth(const QByteArray& role) const;
/**
* Sets the widths of the columns for all roles. From a performance point of
* view calling this method should be preferred over several setColumnWidth()
* calls in case if the width of more than one column should be changed.
* Note that the widths only get applied if KItemListHeader::automaticColumnResizing()
* has been turned off.
*/
void setColumnWidths(const QHash<QByteArray, qreal>& columnWidths);
/**
* @return The column width that is required to show the role unclipped.
*/
qreal preferredColumnWidth(const QByteArray& role) const;
signals:
/**
* Is emitted if the width of a column has been adjusted by the user with the mouse
* (no signal is emitted if KItemListHeader::setColumnWidth() is invoked).
*/
void columnWidthChanged(const QByteArray& role,
qreal currentWidth,
qreal previousWidth);
private:
KItemListHeader(KItemListView* listView);
private:
KItemListView* m_view;
KItemListHeaderWidget* m_headerWidget;
friend class KItemListView; // Constructs the KItemListHeader instance
};
#endif
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