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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QABSTRACTITEMDELEGATE_H
#define QABSTRACTITEMDELEGATE_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qobject.h>
#include <QtWidgets/qstyleoption.h>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_ITEMVIEWS
class QPainter;
class QModelIndex;
class QAbstractItemModel;
class QAbstractItemView;
class QHelpEvent;
class QAbstractItemDelegatePrivate;
class Q_WIDGETS_EXPORT QAbstractItemDelegate : public QObject
{
Q_OBJECT
public:
enum EndEditHint {
NoHint,
EditNextItem,
EditPreviousItem,
SubmitModelCache,
RevertModelCache
};
explicit QAbstractItemDelegate(QObject *parent = Q_NULLPTR);
virtual ~QAbstractItemDelegate();
// painting
virtual void paint(QPainter *painter,
const QStyleOptionViewItem &option,
const QModelIndex &index) const = 0;
virtual QSize sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const = 0;
// editing
virtual QWidget *createEditor(QWidget *parent,
const QStyleOptionViewItem &option,
const QModelIndex &index) const;
virtual void destroyEditor(QWidget *editor, const QModelIndex &index) const;
virtual void setEditorData(QWidget *editor, const QModelIndex &index) const;
virtual void setModelData(QWidget *editor,
QAbstractItemModel *model,
const QModelIndex &index) const;
virtual void updateEditorGeometry(QWidget *editor,
const QStyleOptionViewItem &option,
const QModelIndex &index) const;
// for non-widget editors
virtual bool editorEvent(QEvent *event,
QAbstractItemModel *model,
const QStyleOptionViewItem &option,
const QModelIndex &index);
static QString elidedText(const QFontMetrics &fontMetrics, int width,
Qt::TextElideMode mode, const QString &text);
virtual bool helpEvent(QHelpEvent *event,
QAbstractItemView *view,
const QStyleOptionViewItem &option,
const QModelIndex &index);
virtual QVector<int> paintingRoles() const;
Q_SIGNALS:
void commitData(QWidget *editor);
void closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint = NoHint);
void sizeHintChanged(const QModelIndex &);
protected:
QAbstractItemDelegate(QObjectPrivate &, QObject *parent = Q_NULLPTR);
private:
Q_DECLARE_PRIVATE(QAbstractItemDelegate)
Q_DISABLE_COPY(QAbstractItemDelegate)
Q_PRIVATE_SLOT(d_func(), void _q_commitDataAndCloseEditor(QWidget*))
};
#endif // QT_NO_ITEMVIEWS
QT_END_NAMESPACE
#endif // QABSTRACTITEMDELEGATE_H
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