class QItemEditorFactory

The QItemEditorFactory class provides widgets for editing item data in views and delegates. More…

Synopsis

Methods

• def __init__()

• def registerEditor()

Virtual methods

• def createEditor()

• def valuePropertyName()

Static functions

• def defaultFactory()

• def setDefaultFactory()

Note

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Detailed Description

When editing data in an item view, editors are created and displayed by a delegate. QStyledItemDelegate , 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.

See also

QStyledItemDelegate Model/View Programming Color Editor Factory Example

__init__()

Constructs a new item editor factory.

createEditor(userType, parent)

Parameters:

• userType – int

• parent – QWidget

Return type:

QWidget

Creates an editor widget with the given parent for the specified userType of data, and returns it as a QWidget .

See also

registerEditor()

static defaultFactory()

Return type:

QItemEditorFactory

Returns the default item editor factory.

See also

setDefaultFactory()

registerEditor(userType, creator)

Parameters:

• userType – int

• creator – QItemEditorCreatorBase

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.

See also

createEditor()

static setDefaultFactory(factory)

Parameters:

factory – QItemEditorFactory

Sets the default item editor factory to the given factory. Both new and existing delegates will use the new factory.

See also

defaultFactory()

valuePropertyName(userType)

Parameters:

userType – int

Return type:

QByteArray

Returns the property name used to access data for the given userType of data.