This offers a combobox with autocompleter that allows selecting features from a layer. More...

#include <qgsfeaturelistcombobox.h>

Inheritance diagram for QgsFeatureListComboBox:

Signals
void	allowNullChanged ()
	Determines if a NULL value should be available in the list.

void	currentFeatureChanged ()
	Emitted when the current feature changes.

void	currentFeatureFoundChanged (bool found)
	Emitted when the feature picker model changes its feature found state.

void	displayExpressionChanged ()
	The display expression will be used to display features as well as the the value to match the typed text against.

void	filterExpressionChanged ()
	An additional expression to further restrict the available features.

void	identifierFieldChanged ()
	Field name that will be used to uniquely identify the current feature.

void	identifierValueChanged ()
	The identifier value of the currently selected feature.

void	modelUpdated ()
	The underlying model has been updated.

void	sourceLayerChanged ()
	The layer from which features should be listed.

Public Member Functions
	QgsFeatureListComboBox (QWidget *parent=nullptr)
	Create a new QgsFeatureListComboBox, optionally specifying a parent.

bool	allowNull () const
	Determines if a NULL value should be available in the list.

QgsFeatureRequest	currentFeatureRequest () const
	Shorthand for getting a feature request to query the currently selected feature.

QModelIndex	currentModelIndex () const
	The index of the currently selected item.

QString	displayExpression () const
	The display expression will be used to display features as well as the value to match the typed text against.

int	fetchLimit () const
	Returns the feature request fetch limit.

QString	filterExpression () const
	An additional expression to further restrict the available features.

void	focusOutEvent (QFocusEvent *event) override

Q_DECL_DEPRECATED QString	identifierField () const
	Field name that will be used to uniquely identify the current feature.

QStringList	identifierFields () const
	Field name that will be used to uniquely identify the current feature.

Q_DECL_DEPRECATED QVariant	identifierValue () const
	The identifier value of the currently selected feature.

QVariantList	identifierValues () const
	The identifier values of the currently selected feature.

void	keyPressEvent (QKeyEvent *event) override

int	nullIndex () const
	Returns the current index of the NULL value, or -1 if NULL values are not allowed.

void	setAllowNull (bool allowNull)
	Determines if a NULL value should be available in the list.

void	setCurrentFeature (const QgsFeature &feature)
	Sets the current index by using the given feature.

void	setDisplayExpression (const QString &displayExpression)
	The display expression will be used to display features as well as the value to match the typed text against.

void	setFetchLimit (int fetchLimit)
	Defines the feature request fetch limit If set to 0, no limit is applied when fetching.

void	setFilterExpression (const QString &filterExpression)
	An additional expression to further restrict the available features.

Q_DECL_DEPRECATED void	setIdentifierField (const QString &identifierField)
	Field name that will be used to uniquely identify the current feature.

void	setIdentifierFields (const QStringList &identifierFields)
	Field name that will be used to uniquely identify the current feature.

Q_DECL_DEPRECATED void	setIdentifierValue (const QVariant &identifierValue)
	The identifier value of the currently selected feature.

void	setIdentifierValues (const QVariantList &identifierValues)
	The identifier values of the currently selected feature.

void	setIdentifierValuesToNull ()
	Sets the identifier values of the currently selected feature to NULL value(s).

void	setSourceLayer (QgsVectorLayer *sourceLayer)
	The layer from which features should be listed.

QgsVectorLayer *	sourceLayer () const
	The layer from which features should be listed.

Properties
bool	allowNull

QString	displayExpression

QString	filterExpression

QString	identifierField

QVariant	identifierValue

QVariantList	identifierValues

QgsVectorLayer *	sourceLayer

Friends
class	TestQgsFeatureListComboBox

Detailed Description

This offers a combobox with autocompleter that allows selecting features from a layer.

It will show up to 100 entries at a time. The entries can be chosen based on the displayExpression and whenever text is typed into the combobox, the completer and popup will adjust to features matching the typed text.

Definition at line 37 of file qgsfeaturelistcombobox.h.

Constructor & Destructor Documentation

◆ QgsFeatureListComboBox()

QgsFeatureListComboBox::QgsFeatureListComboBox ( QWidget * parent = nullptr )

Create a new QgsFeatureListComboBox, optionally specifying a parent.

Definition at line 28 of file qgsfeaturelistcombobox.cpp.

Member Function Documentation

◆ allowNull()

bool QgsFeatureListComboBox::allowNull ( ) const

Determines if a NULL value should be available in the list.

Definition at line 244 of file qgsfeaturelistcombobox.cpp.

◆ allowNullChanged

void QgsFeatureListComboBox::allowNullChanged ( )

signal

Determines if a NULL value should be available in the list.

◆ currentFeatureChanged

void QgsFeatureListComboBox::currentFeatureChanged ( )

signal

Emitted when the current feature changes.

Since: QGIS 3.16.5

◆ currentFeatureFoundChanged

void QgsFeatureListComboBox::currentFeatureFoundChanged ( bool found )

signal

Emitted when the feature picker model changes its feature found state.

Since: QGIS 3.38

◆ currentFeatureRequest()

QgsFeatureRequest QgsFeatureListComboBox::currentFeatureRequest ( ) const

Shorthand for getting a feature request to query the currently selected feature.

Definition at line 292 of file qgsfeaturelistcombobox.cpp.

◆ currentModelIndex()

QModelIndex QgsFeatureListComboBox::currentModelIndex ( ) const

The index of the currently selected item.

Definition at line 223 of file qgsfeaturelistcombobox.cpp.

◆ displayExpression()

QString QgsFeatureListComboBox::displayExpression ( ) const

The display expression will be used to display features as well as the value to match the typed text against.

Definition at line 96 of file qgsfeaturelistcombobox.cpp.

◆ displayExpressionChanged

void QgsFeatureListComboBox::displayExpressionChanged ( )

signal

The display expression will be used to display features as well as the the value to match the typed text against.

◆ fetchLimit()

int QgsFeatureListComboBox::fetchLimit ( ) const

Returns the feature request fetch limit.

Since: QGIS 3.32

Definition at line 255 of file qgsfeaturelistcombobox.cpp.

◆ filterExpression()

QString QgsFeatureListComboBox::filterExpression ( ) const

An additional expression to further restrict the available features.

This can be used to integrate additional spatial or other constraints.

Definition at line 319 of file qgsfeaturelistcombobox.cpp.

◆ filterExpressionChanged

void QgsFeatureListComboBox::filterExpressionChanged ( )

signal

An additional expression to further restrict the available features.

This can be used to integrate additional spatial or other constraints.

◆ focusOutEvent()

void QgsFeatureListComboBox::focusOutEvent ( QFocusEvent * event )

override

Definition at line 228 of file qgsfeaturelistcombobox.cpp.

◆ identifierField()

QString QgsFeatureListComboBox::identifierField ( ) const

Field name that will be used to uniquely identify the current feature.

Normally the primary key of the layer.

Deprecated:: QGIS 3.10

Definition at line 199 of file qgsfeaturelistcombobox.cpp.

◆ identifierFieldChanged

void QgsFeatureListComboBox::identifierFieldChanged ( )

signal

Field name that will be used to uniquely identify the current feature.

Normally the primary key of the layer.

◆ identifierFields()

QStringList QgsFeatureListComboBox::identifierFields ( ) const

Field name that will be used to uniquely identify the current feature.

Normally the primary key of the layer.

Since: QGIS 3.10

Definition at line 208 of file qgsfeaturelistcombobox.cpp.

◆ identifierValue()

QVariant QgsFeatureListComboBox::identifierValue ( ) const

The identifier value of the currently selected feature.

A value from the identifierField.

Deprecated:: QGIS 3.10

Definition at line 265 of file qgsfeaturelistcombobox.cpp.

◆ identifierValueChanged

void QgsFeatureListComboBox::identifierValueChanged ( )

signal

The identifier value of the currently selected feature.

A value from the identifierField.

◆ identifierValues()

QVariantList QgsFeatureListComboBox::identifierValues ( ) const

The identifier values of the currently selected feature.

A value from the identifierField.

Since: QGIS 3.10

Definition at line 272 of file qgsfeaturelistcombobox.cpp.

◆ keyPressEvent()

void QgsFeatureListComboBox::keyPressEvent ( QKeyEvent * event )

override

Definition at line 235 of file qgsfeaturelistcombobox.cpp.

◆ modelUpdated

void QgsFeatureListComboBox::modelUpdated ( )

signal

The underlying model has been updated.

Since: QGIS 3.2

◆ nullIndex()

int QgsFeatureListComboBox::nullIndex ( ) const

Returns the current index of the NULL value, or -1 if NULL values are not allowed.

Since: QGIS 3.2

Definition at line 173 of file qgsfeaturelistcombobox.cpp.

◆ setAllowNull()

void QgsFeatureListComboBox::setAllowNull ( bool allowNull )

Determines if a NULL value should be available in the list.

Definition at line 249 of file qgsfeaturelistcombobox.cpp.

◆ setCurrentFeature()

void QgsFeatureListComboBox::setCurrentFeature ( const QgsFeature & feature )

Sets the current index by using the given feature.

Since: QGIS 3.10

Definition at line 85 of file qgsfeaturelistcombobox.cpp.

◆ setDisplayExpression()

void QgsFeatureListComboBox::setDisplayExpression ( const QString & displayExpression )

The display expression will be used to display features as well as the value to match the typed text against.

Definition at line 101 of file qgsfeaturelistcombobox.cpp.

◆ setFetchLimit()

void QgsFeatureListComboBox::setFetchLimit ( int fetchLimit )

Defines the feature request fetch limit If set to 0, no limit is applied when fetching.

Since: QGIS 3.32

Definition at line 260 of file qgsfeaturelistcombobox.cpp.

◆ setFilterExpression()

void QgsFeatureListComboBox::setFilterExpression ( const QString & filterExpression )

An additional expression to further restrict the available features.

This can be used to integrate additional spatial or other constraints.

Definition at line 324 of file qgsfeaturelistcombobox.cpp.

◆ setIdentifierField()

void QgsFeatureListComboBox::setIdentifierField ( const QString & identifierField )

Field name that will be used to uniquely identify the current feature.

Normally the primary key of the layer.

Deprecated:: QGIS 3.10

Definition at line 213 of file qgsfeaturelistcombobox.cpp.

◆ setIdentifierFields()

void QgsFeatureListComboBox::setIdentifierFields ( const QStringList & identifierFields )

Field name that will be used to uniquely identify the current feature.

Normally the primary key of the layer.

Since: QGIS 3.10

Definition at line 218 of file qgsfeaturelistcombobox.cpp.

◆ setIdentifierValue()

void QgsFeatureListComboBox::setIdentifierValue ( const QVariant & identifierValue )

The identifier value of the currently selected feature.

A value from the identifierField.

Deprecated:: QGIS 3.10. Use setIdentifierValues.

Definition at line 277 of file qgsfeaturelistcombobox.cpp.

◆ setIdentifierValues()

void QgsFeatureListComboBox::setIdentifierValues ( const QVariantList & identifierValues )

The identifier values of the currently selected feature.

A value from the identifierFields.

Since: QGIS 3.10

Definition at line 282 of file qgsfeaturelistcombobox.cpp.

◆ setIdentifierValuesToNull()

void QgsFeatureListComboBox::setIdentifierValuesToNull ( )

Sets the identifier values of the currently selected feature to NULL value(s).

Since: QGIS 3.10

Definition at line 287 of file qgsfeaturelistcombobox.cpp.

◆ setSourceLayer()

void QgsFeatureListComboBox::setSourceLayer ( QgsVectorLayer * sourceLayer )

The layer from which features should be listed.

Definition at line 80 of file qgsfeaturelistcombobox.cpp.

◆ sourceLayer()

QgsVectorLayer * QgsFeatureListComboBox::sourceLayer ( ) const

The layer from which features should be listed.

Definition at line 75 of file qgsfeaturelistcombobox.cpp.

◆ sourceLayerChanged

void QgsFeatureListComboBox::sourceLayerChanged ( )

signal

The layer from which features should be listed.

Friends And Related Symbol Documentation

◆ TestQgsFeatureListComboBox

friend class TestQgsFeatureListComboBox

friend

Definition at line 279 of file qgsfeaturelistcombobox.h.

Property Documentation

◆ allowNull

bool QgsFeatureListComboBox::allowNull

readwrite

Definition at line 47 of file qgsfeaturelistcombobox.h.

◆ displayExpression

QString QgsFeatureListComboBox::displayExpression

readwrite

Definition at line 42 of file qgsfeaturelistcombobox.h.

◆ filterExpression

QString QgsFeatureListComboBox::filterExpression

readwrite

Definition at line 43 of file qgsfeaturelistcombobox.h.

◆ identifierField

QString QgsFeatureListComboBox::identifierField

readwrite

Definition at line 46 of file qgsfeaturelistcombobox.h.

◆ identifierValue

QVariant QgsFeatureListComboBox::identifierValue

readwrite

Definition at line 44 of file qgsfeaturelistcombobox.h.

◆ identifierValues

QVariantList QgsFeatureListComboBox::identifierValues

readwrite

Definition at line 45 of file qgsfeaturelistcombobox.h.

◆ sourceLayer

QgsVectorLayer * QgsFeatureListComboBox::sourceLayer

readwrite

Definition at line 41 of file qgsfeaturelistcombobox.h.

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

/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/gui/qgsfeaturelistcombobox.h
/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/gui/qgsfeaturelistcombobox.cpp

Signals

Public Member Functions

Properties

Friends

Detailed Description

Constructor & Destructor Documentation

◆ QgsFeatureListComboBox()

Member Function Documentation

◆ allowNull()

◆ allowNullChanged

◆ currentFeatureChanged

◆ currentFeatureFoundChanged

◆ currentFeatureRequest()

◆ currentModelIndex()

◆ displayExpression()

◆ displayExpressionChanged

◆ fetchLimit()

◆ filterExpression()

◆ filterExpressionChanged

◆ focusOutEvent()

◆ identifierField()

◆ identifierFieldChanged

◆ identifierFields()

◆ identifierValue()

◆ identifierValueChanged

◆ identifierValues()

◆ keyPressEvent()

◆ modelUpdated

◆ nullIndex()

◆ setAllowNull()

◆ setCurrentFeature()

◆ setDisplayExpression()

◆ setFetchLimit()

◆ setFilterExpression()

◆ setIdentifierField()

◆ setIdentifierFields()

◆ setIdentifierValue()

◆ setIdentifierValues()

◆ setIdentifierValuesToNull()

◆ setSourceLayer()

◆ sourceLayer()

◆ sourceLayerChanged

Friends And Related Symbol Documentation

◆ TestQgsFeatureListComboBox

Property Documentation

◆ allowNull

◆ displayExpression

◆ filterExpression

◆ identifierField

◆ identifierValue

◆ identifierValues

◆ sourceLayer