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/*
SPDX-FileCopyrightText: 2009 David Nolden <david.nolden.kdevelop@art-master.de>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KDEVPLATFORM_FOCUSEDTREEVIEW_H
#define KDEVPLATFORM_FOCUSEDTREEVIEW_H
#include <QTreeView>
#include "utilexport.h"
namespace KDevelop {
class FocusedTreeViewPrivate;
/**
* Specialized version of QTreeView, that allows efficiently managing an extremely
* long list of items, by focusing the size of the horizontal scroll-bars only on the currently
* visible items.
*
* In addition, this class provides optional automatic scrolling when rows are inserted at the end.
*
* @warning Either the scroll-mode ScrollPerItem must be enabled, or the uniformRowHeight flag, for this to work efficiently.
* @warning This currently only works with flat list models(todo).
*/
class KDEVPLATFORMUTIL_EXPORT FocusedTreeView : public QTreeView
{
Q_OBJECT
public:
explicit FocusedTreeView(QWidget* parent);
~FocusedTreeView() override;
/**
* When enabled, automatically scroll to bottom when new rows are inserted at the end
* and the end was previously visible. (Default: false)
*/
void setAutoScrollAtEnd(bool enable);
void setModel(QAbstractItemModel* model) override;
int sizeHintForColumn(int column) const override;
/**
* Resize columns to contents.
*
* Call this function after modifying the @a wordWrap property to rewrap lines
* immediately rather than only after subsequent vertical scrolling.
*/
void fitColumns();
protected:
void resizeEvent(QResizeEvent* event) override;
private Q_SLOTS:
void rowsAboutToBeInserted(const QModelIndex& parent, int first, int last);
void rowsRemoved(const QModelIndex& parent, int first, int last);
void delayedAutoScrollAndResize();
private:
const QScopedPointer<class FocusedTreeViewPrivate> d_ptr;
Q_DECLARE_PRIVATE(FocusedTreeView)
};
}
#endif // KDEVPLATFORM_FOCUSEDLISTVIEW_H
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