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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QABSTRACTITEMDELEGATE_H
#define QABSTRACTITEMDELEGATE_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qobject.h>
#include <QtWidgets/qstyleoption.h>
QT_REQUIRE_CONFIG(itemviews);
QT_BEGIN_NAMESPACE
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 = 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);
virtual bool helpEvent(QHelpEvent *event,
QAbstractItemView *view,
const QStyleOptionViewItem &option,
const QModelIndex &index);
virtual QList<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 = nullptr);
private:
Q_DECLARE_PRIVATE(QAbstractItemDelegate)
Q_DISABLE_COPY(QAbstractItemDelegate)
Q_PRIVATE_SLOT(d_func(), void _q_commitDataAndCloseEditor(QWidget*))
};
QT_END_NAMESPACE
#endif // QABSTRACTITEMDELEGATE_H
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