QItemEditorFactory Class
The QItemEditorFactory class provides widgets for editing item data in views and delegates. 更多...
| 头文件: | #include <QItemEditorFactory> |
| qmake: | QT += widgets |
| 开始支持版本: | Qt 4.2 |
公有函数
| QItemEditorFactory() | |
| virtual | ~QItemEditorFactory() |
| virtual QWidget * | createEditor(int userType, QWidget *parent) const |
| void | registerEditor(int userType, QItemEditorCreatorBase *creator) |
| virtual QByteArray | valuePropertyName(int userType) const |
静态公有成员
| const QItemEditorFactory * | defaultFactory() |
| void | setDefaultFactory(QItemEditorFactory *factory) |
详细描述
The QItemEditorFactory class provides widgets for editing item data in views and delegates.
When editing data in an item view, editors are created and displayed by a delegate. QItemDelegate, which is the delegate by default installed on Qt's item views, uses a QItemEditorFactory to create editors for it. A default unique instance provided by QItemEditorFactory is used by all item delegates. If you set a new default factory with setDefaultFactory(), the new factory will be used by existing and new delegates.
A factory keeps a collection of QItemEditorCreatorBase instances, which are specialized editors that produce editors for one particular QVariant data type (All Qt models store their data in QVariants).
Standard Editing Widgets
The standard factory implementation provides editors for a variety of data types. These are created whenever a delegate needs to provide an editor for data supplied by a model. The following table shows the relationship between types and the standard editors provided.
| Type | Editor Widget |
|---|---|
| bool | QComboBox |
| double | QDoubleSpinBox |
| int | QSpinBox |
| unsigned int | |
| QDate | QDateEdit |
| QDateTime | QDateTimeEdit |
| QPixmap | QLabel |
| QString | QLineEdit |
| QTime | QTimeEdit |
Additional editors can be registered with the registerEditor() function.
参见 QItemDelegate, Model/View Programming, and Color Editor Factory Example.
成员函数
QItemEditorFactory::QItemEditorFactory()
Constructs a new item editor factory.
[virtual] QItemEditorFactory::~QItemEditorFactory()
Destroys the item editor factory.
[virtual] QWidget *QItemEditorFactory::createEditor(int userType, QWidget *parent) const
Creates an editor widget with the given parent for the specified userType of data, and returns it as a QWidget.
参见 registerEditor().
[static] const QItemEditorFactory *QItemEditorFactory::defaultFactory()
Returns the default item editor factory.
参见 setDefaultFactory().
void QItemEditorFactory::registerEditor(int userType, QItemEditorCreatorBase *creator)
Registers an item editor creator specified by creator for the given userType of data.
Note: The factory takes ownership of the item editor creator and will destroy it if a new creator for the same type is registered later.
参见 createEditor().
[static] void QItemEditorFactory::setDefaultFactory(QItemEditorFactory *factory)
Sets the default item editor factory to the given factory. Both new and existing delegates will use the new factory.
参见 defaultFactory().
[virtual] QByteArray QItemEditorFactory::valuePropertyName(int userType) const
Returns the property name used to access data for the given userType of data.