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/*
* SPDX-FileCopyrightText: 2012 Peter Penz <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#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:
~KItemListHeader() override;
/**
* 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;
/**
* Sets the width of the column *before* the first column.
* This is intended to facilitate an empty region for deselection in the main viewport.
*/
void setSidePadding(qreal width);
qreal sidePadding() const;
Q_SIGNALS:
void sidePaddingChanged(qreal width);
/**
* 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);
/**
* Is emitted if the user has released the mouse button after adjusting the
* width of a visible role.
*/
void columnWidthChangeFinished(const QByteArray &role, qreal currentWidth);
private:
explicit KItemListHeader(KItemListView *listView);
private:
KItemListView *m_view;
KItemListHeaderWidget *m_headerWidget;
friend class KItemListView; // Constructs the KItemListHeader instance
};
#endif
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