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40 | ****************************************************************************/ |
41 | |
42 | #ifndef QABSTRACTITEMDELEGATE_H |
43 | #define QABSTRACTITEMDELEGATE_H |
44 | |
45 | #include <QtCore/qobject.h> |
46 | #include <QtGui/qstyleoption.h> |
47 | |
48 | QT_BEGIN_HEADER |
49 | |
50 | QT_BEGIN_NAMESPACE |
51 | |
52 | QT_MODULE(Gui) |
53 | |
54 | #ifndef QT_NO_ITEMVIEWS |
55 | |
56 | class QPainter; |
57 | class QModelIndex; |
58 | class QAbstractItemModel; |
59 | class QAbstractItemView; |
60 | class QHelpEvent; |
61 | |
62 | class Q_GUI_EXPORT QAbstractItemDelegate : public QObject |
63 | { |
64 | Q_OBJECT |
65 | |
66 | public: |
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 | |
111 | public Q_SLOTS: |
112 | bool helpEvent(QHelpEvent *event, |
113 | QAbstractItemView *view, |
114 | const QStyleOptionViewItem &option, |
115 | const QModelIndex &index); |
116 | |
117 | Q_SIGNALS: |
118 | void commitData(QWidget *editor); |
119 | void closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint = NoHint); |
120 | void sizeHintChanged(const QModelIndex &); |
121 | |
122 | protected: |
123 | QAbstractItemDelegate(QObjectPrivate &, QObject *parent = 0); |
124 | private: |
125 | Q_DISABLE_COPY(QAbstractItemDelegate) |
126 | }; |
127 | |
128 | #endif // QT_NO_ITEMVIEWS |
129 | |
130 | QT_END_NAMESPACE |
131 | |
132 | QT_END_HEADER |
133 | |
134 | #endif // QABSTRACTITEMDELEGATE_H |
135 | |