Every attribute editor widget needs a factory, which inherits this class. More...

#include <qgseditorwidgetfactory.h>

Inheritance diagram for QgsEditorWidgetFactory:

[legend]

Public Member Functions
	QgsEditorWidgetFactory (const QString &name)
	Constructor. More...

virtual	~QgsEditorWidgetFactory ()=default

virtual QgsEditorConfigWidget *	configWidget (QgsVectorLayer vl, int fieldIdx, QWidget parent) const =0
	Override this in your implementation. More...

virtual QgsEditorWidgetWrapper *	create (QgsVectorLayer vl, int fieldIdx, QWidget editor, QWidget *parent) const =0
	Override this in your implementation. More...

virtual QgsSearchWidgetWrapper *	createSearchWidget (QgsVectorLayer vl, int fieldIdx, QWidget parent) const
	By default a simple QgsFilterLineEdit is returned as search widget. More...

virtual unsigned int	fieldScore (const QgsVectorLayer *vl, int fieldIdx) const
	This method allows disabling this editor widget type for a certain field. More...

QString	name ()
	Returns The human readable identifier name of this widget type. More...

virtual QHash< const char *, int >	supportedWidgetTypes ()
	Returns a list of widget types which this editor widget supports. More...

bool	supportsField (const QgsVectorLayer *vl, int fieldIdx)
	Check if this editor widget type supports a certain field. More...

Detailed Description

Every attribute editor widget needs a factory, which inherits this class.

It provides metadata for the widgets such as the name (human readable), it serializes the configuration to an xml structure and loads the configuration from there.

It also has factory methods to create a widget wrapper for the attribute editor itself and another factory method to create a configuration dialog.

Definition at line 43 of file qgseditorwidgetfactory.h.

Constructor & Destructor Documentation

QgsEditorWidgetFactory::QgsEditorWidgetFactory ( const QString & name )

Constructor.

Parameters

name	A human readable name for this widget type

Definition at line 26 of file qgseditorwidgetfactory.cpp.

virtual QgsEditorWidgetFactory::~QgsEditorWidgetFactory ( )

virtualdefault

Member Function Documentation

virtual QgsEditorConfigWidget* QgsEditorWidgetFactory::configWidget	(	QgsVectorLayer *	vl,
		int	fieldIdx,
		QWidget *	parent
	)		const

pure virtual

Override this in your implementation.

Create a new configuration widget for this widget type.

Parameters

vl	The layer for which the widget will be created
fieldIdx	The field index for which the widget will be created
parent	The parent widget of the created config widget

Returns: A configuration widget

Implemented in QgsRelationReferenceFactory, QgsKeyValueWidgetFactory, QgsListWidgetFactory, QgsValueRelationWidgetFactory, QgsExternalResourceWidgetFactory, QgsCheckboxWidgetFactory, QgsClassificationWidgetWrapperFactory, QgsColorWidgetFactory, QgsEnumerationWidgetFactory, QgsHiddenWidgetFactory, QgsRangeWidgetFactory, QgsUniqueValueWidgetFactory, QgsUuidWidgetFactory, QgsDateTimeEditFactory, QgsTextEditWidgetFactory, and QgsValueMapWidgetFactory.

virtual QgsEditorWidgetWrapper* QgsEditorWidgetFactory::create	(	QgsVectorLayer *	vl,
		int	fieldIdx,
		QWidget *	editor,
		QWidget *	parent
	)		const

pure virtual

Override this in your implementation.

Create a new editor widget wrapper. Call QgsEditorWidgetRegistry::create() instead of calling this method directly.

Parameters

vl	The vector layer on which this widget will act
fieldIdx	The field index on which this widget will act
editor	An editor widget if already existent. If NULL is provided, a new widget will be created.
parent	The parent for the wrapper class and any created widget.

Returns: A new widget wrapper

Implemented in QgsRelationReferenceFactory, QgsKeyValueWidgetFactory, QgsListWidgetFactory, QgsExternalResourceWidgetFactory, QgsValueRelationWidgetFactory, QgsCheckboxWidgetFactory, QgsClassificationWidgetWrapperFactory, QgsColorWidgetFactory, QgsEnumerationWidgetFactory, QgsHiddenWidgetFactory, QgsRangeWidgetFactory, QgsUniqueValueWidgetFactory, QgsUuidWidgetFactory, QgsDateTimeEditFactory, QgsTextEditWidgetFactory, and QgsValueMapWidgetFactory.

QgsSearchWidgetWrapper * QgsEditorWidgetFactory::createSearchWidget	(	QgsVectorLayer *	vl,
		int	fieldIdx,
		QWidget *	parent
	)		const

virtual

By default a simple QgsFilterLineEdit is returned as search widget.

Override in own factory to get something different than the default.

Reimplemented in QgsRelationReferenceFactory, QgsValueRelationWidgetFactory, QgsCheckboxWidgetFactory, QgsDateTimeEditFactory, QgsTextEditWidgetFactory, and QgsValueMapWidgetFactory.

Definition at line 35 of file qgseditorwidgetfactory.cpp.

unsigned int QgsEditorWidgetFactory::fieldScore	(	const QgsVectorLayer *	vl,
		int	fieldIdx
	)		const

virtual

This method allows disabling this editor widget type for a certain field.

By default, it returns 5 for every fields. Reimplement this if you only support certain fields.

Typical return values are:

0: not supported
5: maybe support (for example, Datetime support strings depending on their content)
10: basic support (this is what returns TextEdit for example, since it supports everything in a crude way)
20: specialized support

Parameters

vl
fieldIdx

Returns: 0 if the field is not supported or a bigger number if it can (the widget with the biggest number will be taken by default). The default implementation returns 5..

See also: supportsField()

Reimplemented in QgsRelationReferenceFactory, QgsKeyValueWidgetFactory, QgsListWidgetFactory, QgsCheckboxWidgetFactory, QgsExternalResourceWidgetFactory, QgsEnumerationWidgetFactory, QgsColorWidgetFactory, QgsDateTimeEditFactory, QgsUuidWidgetFactory, and QgsTextEditWidgetFactory.

Definition at line 45 of file qgseditorwidgetfactory.cpp.

QString QgsEditorWidgetFactory::name ( )

Returns The human readable identifier name of this widget type.

Returns: a name

Definition at line 40 of file qgseditorwidgetfactory.cpp.

virtual QHash<const char *, int> QgsEditorWidgetFactory::supportedWidgetTypes ( )

inlinevirtual

Returns a list of widget types which this editor widget supports.

Each widget type can have a priority value attached, the factory with the highest one will be used.

Returns: A map of widget type names and weight values

Note: not available in Python bindings

Reimplemented in QgsRelationReferenceFactory, QgsCheckboxWidgetFactory, QgsRangeWidgetFactory, QgsDateTimeEditFactory, and QgsValueMapWidgetFactory.

Definition at line 110 of file qgseditorwidgetfactory.h.

bool QgsEditorWidgetFactory::supportsField	(	const QgsVectorLayer *	vl,
		int	fieldIdx
	)

inline

Check if this editor widget type supports a certain field.

Parameters

vl	The layer
fieldIdx	The field index

Returns: True if the type is supported for this field

See also: fieldScore()

Definition at line 100 of file qgseditorwidgetfactory.h.

The documentation for this class was generated from the following files:

/build/qgis-3.4.15+24xenial/src/gui/editorwidgets/core/qgseditorwidgetfactory.h
/build/qgis-3.4.15+24xenial/src/gui/editorwidgets/core/qgseditorwidgetfactory.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation