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41
42#ifndef QABSTRACTITEMDELEGATE_H
43#define QABSTRACTITEMDELEGATE_H
44
45#include <QtCore/qobject.h>
46#include <QtGui/qstyleoption.h>
47
48QT_BEGIN_HEADER
49
50QT_BEGIN_NAMESPACE
51
52QT_MODULE(Gui)
53
54#ifndef QT_NO_ITEMVIEWS
55
56class QPainter;
57class QModelIndex;
58class QAbstractItemModel;
59class QAbstractItemView;
60class QHelpEvent;
61
62class Q_GUI_EXPORT QAbstractItemDelegate : public QObject
63{
64 Q_OBJECT
65
66public:
67
68 enum EndEditHint {
69 NoHint,
70 EditNextItem,
71 EditPreviousItem,
72 SubmitModelCache,
73 RevertModelCache
74 };
75
76 explicit QAbstractItemDelegate(QObject *parent = 0);
77 virtual ~QAbstractItemDelegate();
78
79 // painting
80 virtual void paint(QPainter *painter,
81 const QStyleOptionViewItem &option,
82 const QModelIndex &index) const = 0;
83
84 virtual QSize sizeHint(const QStyleOptionViewItem &option,
85 const QModelIndex &index) const = 0;
86
87 // editing
88 virtual QWidget *createEditor(QWidget *parent,
89 const QStyleOptionViewItem &option,
90 const QModelIndex &index) const;
91
92 virtual void setEditorData(QWidget *editor, const QModelIndex &index) const;
93
94 virtual void setModelData(QWidget *editor,
95 QAbstractItemModel *model,
96 const QModelIndex &index) const;
97
98 virtual void updateEditorGeometry(QWidget *editor,
99 const QStyleOptionViewItem &option,
100 const QModelIndex &index) const;
101
102 // for non-widget editors
103 virtual bool editorEvent(QEvent *event,
104 QAbstractItemModel *model,
105 const QStyleOptionViewItem &option,
106 const QModelIndex &index);
107
108 static QString elidedText(const QFontMetrics &fontMetrics, int width,
109 Qt::TextElideMode mode, const QString &text);
110
111public Q_SLOTS:
112 bool helpEvent(QHelpEvent *event,
113 QAbstractItemView *view,
114 const QStyleOptionViewItem &option,
115 const QModelIndex &index);
116
117Q_SIGNALS:
118 void commitData(QWidget *editor);
119 void closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint = NoHint);
120 void sizeHintChanged(const QModelIndex &);
121
122protected:
123 QAbstractItemDelegate(QObjectPrivate &, QObject *parent = 0);
124private:
125 Q_DISABLE_COPY(QAbstractItemDelegate)
126};
127
128#endif // QT_NO_ITEMVIEWS
129
130QT_END_NAMESPACE
131
132QT_END_HEADER
133
134#endif // QABSTRACTITEMDELEGATE_H
135