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| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| ** This file is part of the QtWidgets module of the Qt Toolkit. |
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| |
| #ifndef QABSTRACTITEMDELEGATE_H |
| #define QABSTRACTITEMDELEGATE_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 = 0); |
| 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 = 0); |
| 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 |