Shows a search widget on a filter form. More...

#include <qgssearchwidgetwrapper.h>

Inheritance diagram for QgsSearchWidgetWrapper:

[legend]

Public Types
enum	FilterFlag { EqualTo = 1 << 1 , NotEqualTo = 1 << 2 , GreaterThan = 1 << 3 , LessThan = 1 << 4 , GreaterThanOrEqualTo = 1 << 5 , LessThanOrEqualTo = 1 << 6 , Between = 1 << 7 , CaseInsensitive = 1 << 8 , Contains = 1 << 9 , DoesNotContain = 1 << 10 , IsNull = 1 << 11 , IsNotBetween = 1 << 12 , IsNotNull = 1 << 13 , StartsWith = 1 << 14 , EndsWith = 1 << 15 }
	Flags which indicate what types of filtering and searching is possible using the widget. More...

typedef QFlags< FilterFlag >	FilterFlags

Public Types inherited from QgsWidgetWrapper
enum class	Property : int { RootPath = 0 , DocumentViewerContent , StorageUrl }
	Data defined properties for different editor widgets. More...

Public Slots
virtual void	clearWidget ()
	Clears the widget's current value and resets it back to the default state.

void	setEnabled (bool enabled) override
	Toggles whether the search widget is enabled or disabled.

Public Slots inherited from QgsWidgetWrapper
virtual void	setEnabled (bool enabled)
	Is used to enable or disable the edit functionality of the managed widget.

virtual void	setFeature (const QgsFeature &feature)=0
	Is called when the value of the widget needs to be changed.

Signals
void	expressionChanged (const QString &exp)
	Emitted whenever the expression changes.

void	valueChanged ()
	Emitted when a user changes the value of the search widget.

void	valueCleared ()
	Emitted when a user changes the value of the search widget back to an empty, default state.

Signals inherited from QgsWidgetWrapper
void	contextChanged ()
	Signal when QgsAttributeEditorContext mContext changed.

Public Member Functions
	QgsSearchWidgetWrapper (QgsVectorLayer vl, int fieldIdx, QWidget parent=nullptr)
	Create a new widget wrapper.

QString	aggregate () const
	If in AggregateSearch mode, which aggregate should be used to construct the filter expression.

virtual bool	applyDirectly ()=0
	If this is `true`, then this search widget should take effect directly when its expression changes.

virtual QString	createExpression (FilterFlags flags) const
	Creates a filter expression based on the current state of the search widget and the specified filter flags.

QString	createFieldIdentifier () const
	Gets a field name or expression to use as field comparison.

virtual FilterFlags	defaultFlags () const
	Returns the filter flags which should be set by default for the search widget.

virtual QString	expression () const =0
	Will be used to access the widget's value.

int	fieldIndex () const
	Returns the field index.

void	setAggregate (const QString &aggregate)
	If in AggregateSearch mode, which aggregate should be used to construct the filter expression.

virtual FilterFlags	supportedFlags () const
	Returns filter flags supported by the search widget.

Public Member Functions inherited from QgsWidgetWrapper
	QgsWidgetWrapper (QgsVectorLayer vl, QWidget editor=nullptr, QWidget *parent=nullptr)
	Create a new widget wrapper.

QVariantMap	config () const
	Returns the whole config.

QVariant	config (const QString &key, const QVariant &defaultVal=QVariant()) const
	Use this inside your overridden classes to access the configuration.

const QgsAttributeEditorContext &	context () const
	Returns information about the context in which this widget is shown.

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the editor widget's property collection, used for data defined overrides.

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the editor widget's property collection, used for data defined overrides.

QgsVectorLayer *	layer () const
	Returns the vector layer associated with the widget.

void	notifyAboutToSave ()
	Notify this widget, that the containing form is about to save and that any pending changes should be pushed to the edit buffer or they might be lost.

void	setConfig (const QVariantMap &config)
	Will set the config of this wrapper to the specified config.

void	setContext (const QgsAttributeEditorContext &context)
	Set the context in which this widget is shown.

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the editor widget's property collection, used for data defined overrides.

virtual bool	valid () const =0
	Returns `true` if the widget has been properly initialized.

QWidget *	widget ()
	Access the widget managed by this wrapper.

template<class T >
T *	widget ()
	Access the widget managed by this wrapper and cast it to a given type.

Static Public Member Functions
static QList< QgsSearchWidgetWrapper::FilterFlag >	exclusiveFilterFlags ()
	Returns a list of exclusive filter flags, which cannot be combined with other flags (e.g., EqualTo/NotEqualTo)

static QList< QgsSearchWidgetWrapper::FilterFlag >	nonExclusiveFilterFlags ()
	Returns a list of non-exclusive filter flags, which can be combined with other flags (e.g., CaseInsensitive)

static QString	toString (QgsSearchWidgetWrapper::FilterFlag flag)
	Returns a translated string representing a filter flag.

Static Public Member Functions inherited from QgsWidgetWrapper
static QgsWidgetWrapper *	fromWidget (QWidget *widget)
	Will return a wrapper for a given widget.

static const QgsPropertiesDefinition &	propertyDefinitions ()
	Returns the editor widget property definitions.

Protected Slots
virtual void	setExpression (const QString &expression)=0
	Set the expression which is currently used as filter for this widget.

void	setFeature (const QgsFeature &feature) override

Protected Member Functions
void	clearExpression ()
	clears the expression to search for all features

Protected Member Functions inherited from QgsWidgetWrapper
virtual QWidget *	createWidget (QWidget *parent)=0
	This method should create a new widget with the provided parent.

virtual void	initWidget (QWidget *editor)
	This method should initialize the editor widget with runtime data.

Protected Attributes
QString	mExpression

int	mFieldIdx

Protected Attributes inherited from QgsWidgetWrapper
QgsPropertyCollection	mPropertyCollection
	Data defined property collection.

Detailed Description

Shows a search widget on a filter form.

Definition at line 85 of file qgssearchwidgetwrapper.h.

Member Typedef Documentation

◆ FilterFlags

typedef QFlags< FilterFlag > QgsSearchWidgetWrapper::FilterFlags

Definition at line 111 of file qgssearchwidgetwrapper.h.

Member Enumeration Documentation

◆ FilterFlag

enum QgsSearchWidgetWrapper::FilterFlag

Flags which indicate what types of filtering and searching is possible using the widget.

Enumerator
EqualTo	Supports equal to.
NotEqualTo	Supports not equal to.
GreaterThan	Supports greater than.
LessThan	Supports less than.
GreaterThanOrEqualTo	Supports >=.
LessThanOrEqualTo	Supports <=.
Between	Supports searches between two values.
CaseInsensitive	Supports case insensitive searching.
Contains	Supports value "contains" searching.
DoesNotContain	Supports value does not contain searching.
IsNull	Supports searching for null values.
IsNotBetween	Supports searching for values outside of a set range.
IsNotNull	Supports searching for non-null values.
StartsWith	Supports searching for strings that start with.
EndsWith	Supports searching for strings that end with.

Definition at line 93 of file qgssearchwidgetwrapper.h.

Constructor & Destructor Documentation

◆ QgsSearchWidgetWrapper()

QgsSearchWidgetWrapper::QgsSearchWidgetWrapper	(	QgsVectorLayer *	vl,
		int	fieldIdx,
		QWidget *	parent = `nullptr`
	)

explicit

Create a new widget wrapper.

Parameters

vl	The layer on which the field is
fieldIdx	The field which will be controlled
parent	A parent widget for this widget wrapper and the created widget.

Definition at line 87 of file qgssearchwidgetwrapper.cpp.

Member Function Documentation

◆ aggregate()

QString QgsSearchWidgetWrapper::aggregate ( ) const

If in AggregateSearch mode, which aggregate should be used to construct the filter expression.

Is a Null String if none.

Definition at line 123 of file qgssearchwidgetwrapper.cpp.

◆ applyDirectly()

virtual bool QgsSearchWidgetWrapper::applyDirectly ( )

pure virtual

If this is true, then this search widget should take effect directly when its expression changes.

Implemented in QgsCheckboxSearchWidgetWrapper, QgsDateTimeSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, QgsRelationAggregateSearchWidgetWrapper, QgsRelationReferenceSearchWidgetWrapper, QgsTextEditSearchWidgetWrapper, QgsValueMapSearchWidgetWrapper, and QgsValueRelationSearchWidgetWrapper.

◆ clearExpression()

void QgsSearchWidgetWrapper::clearExpression ( )

protected

clears the expression to search for all features

Definition at line 118 of file qgssearchwidgetwrapper.cpp.

◆ clearWidget

virtual void QgsSearchWidgetWrapper::clearWidget ( )

inlinevirtualslot

Clears the widget's current value and resets it back to the default state.

Definition at line 212 of file qgssearchwidgetwrapper.h.

◆ createExpression()

virtual QString QgsSearchWidgetWrapper::createExpression ( FilterFlags flags ) const

inlinevirtual

Creates a filter expression based on the current state of the search widget and the specified filter flags.

Parameters

flags filter flags

Returns: filter expression

Reimplemented in QgsCheckboxSearchWidgetWrapper, QgsDateTimeSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, QgsRelationReferenceSearchWidgetWrapper, QgsValueMapSearchWidgetWrapper, and QgsValueRelationSearchWidgetWrapper.

Definition at line 177 of file qgssearchwidgetwrapper.h.

◆ createFieldIdentifier()

QString QgsSearchWidgetWrapper::createFieldIdentifier ( ) const

Gets a field name or expression to use as field comparison.

If in SearchMode returns a quoted field identifier. If in AggregateSearchMode returns an appropriate aggregate expression.

Definition at line 104 of file qgssearchwidgetwrapper.cpp.

◆ defaultFlags()

QgsSearchWidgetWrapper::FilterFlags QgsSearchWidgetWrapper::defaultFlags ( ) const

virtual

Returns the filter flags which should be set by default for the search widget.

See also: supportedFlags()

Reimplemented in QgsCheckboxSearchWidgetWrapper, QgsDateTimeSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, QgsRelationReferenceSearchWidgetWrapper, QgsValueMapSearchWidgetWrapper, and QgsValueRelationSearchWidgetWrapper.

Definition at line 99 of file qgssearchwidgetwrapper.cpp.

◆ exclusiveFilterFlags()

QList< QgsSearchWidgetWrapper::FilterFlag > QgsSearchWidgetWrapper::exclusiveFilterFlags ( )

static

Returns a list of exclusive filter flags, which cannot be combined with other flags (e.g., EqualTo/NotEqualTo)

See also: nonExclusiveFilterFlags()

Definition at line 24 of file qgssearchwidgetwrapper.cpp.

◆ expression()

virtual QString QgsSearchWidgetWrapper::expression ( ) const

pure virtual

Will be used to access the widget's value.

Read the value from the widget and return it properly formatted to be saved in the attribute.

If an invalid variant is returned this will be interpreted as no change. Be sure to return a NULL QVariant if it should be set to NULL.

Returns: The current value the widget represents

Implemented in QgsCheckboxSearchWidgetWrapper, QgsDateTimeSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, QgsRelationAggregateSearchWidgetWrapper, QgsRelationReferenceSearchWidgetWrapper, QgsValueMapSearchWidgetWrapper, and QgsValueRelationSearchWidgetWrapper.

◆ expressionChanged

void QgsSearchWidgetWrapper::expressionChanged ( const QString & exp )

signal

Emitted whenever the expression changes.

Parameters

exp	The new search expression

◆ fieldIndex()

int QgsSearchWidgetWrapper::fieldIndex ( ) const

Returns the field index.

Since: QGIS 3.10

Definition at line 133 of file qgssearchwidgetwrapper.cpp.

◆ nonExclusiveFilterFlags()

QList< QgsSearchWidgetWrapper::FilterFlag > QgsSearchWidgetWrapper::nonExclusiveFilterFlags ( )

static

Returns a list of non-exclusive filter flags, which can be combined with other flags (e.g., CaseInsensitive)

See also: exclusiveFilterFlags()

Definition at line 43 of file qgssearchwidgetwrapper.cpp.

◆ setAggregate()

void QgsSearchWidgetWrapper::setAggregate ( const QString & aggregate )

If in AggregateSearch mode, which aggregate should be used to construct the filter expression.

Is a Null String if none.

Definition at line 128 of file qgssearchwidgetwrapper.cpp.

◆ setEnabled

void QgsSearchWidgetWrapper::setEnabled ( bool enabled )

inlineoverrideslot

Toggles whether the search widget is enabled or disabled.

Parameters

enabled set to true to enable widget

Definition at line 218 of file qgssearchwidgetwrapper.h.

◆ setExpression

virtual void QgsSearchWidgetWrapper::setExpression ( const QString & expression )

protectedpure virtualslot

Set the expression which is currently used as filter for this widget.

Implemented in QgsRelationAggregateSearchWidgetWrapper.

◆ setFeature

void QgsSearchWidgetWrapper::setFeature ( const QgsFeature & feature )

overrideprotectedslot

Definition at line 113 of file qgssearchwidgetwrapper.cpp.

◆ supportedFlags()

QgsSearchWidgetWrapper::FilterFlags QgsSearchWidgetWrapper::supportedFlags ( ) const

virtual

Returns filter flags supported by the search widget.

See also: defaultFlags()

Reimplemented in QgsCheckboxSearchWidgetWrapper, QgsDateTimeSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, QgsRelationReferenceSearchWidgetWrapper, QgsValueMapSearchWidgetWrapper, and QgsValueRelationSearchWidgetWrapper.

Definition at line 94 of file qgssearchwidgetwrapper.cpp.

◆ toString()

QString QgsSearchWidgetWrapper::toString ( QgsSearchWidgetWrapper::FilterFlag flag )

static

Returns a translated string representing a filter flag.

Parameters

flag	flag to convert to string

Definition at line 49 of file qgssearchwidgetwrapper.cpp.

◆ valueChanged

void QgsSearchWidgetWrapper::valueChanged ( )

signal

Emitted when a user changes the value of the search widget.

◆ valueCleared

void QgsSearchWidgetWrapper::valueCleared ( )

signal

Emitted when a user changes the value of the search widget back to an empty, default state.

Member Data Documentation

◆ mExpression

QString QgsSearchWidgetWrapper::mExpression

protected

Definition at line 252 of file qgssearchwidgetwrapper.h.

◆ mFieldIdx

int QgsSearchWidgetWrapper::mFieldIdx

protected

Definition at line 253 of file qgssearchwidgetwrapper.h.

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

/home/fischer/src/qgis-3.38/src/gui/editorwidgets/core/qgssearchwidgetwrapper.h
/home/fischer/src/qgis-3.38/src/gui/editorwidgets/core/qgssearchwidgetwrapper.cpp

Public Types

Public Slots

Signals

Public Member Functions

Static Public Member Functions

Protected Slots

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ FilterFlags

Member Enumeration Documentation

◆ FilterFlag

Constructor & Destructor Documentation

◆ QgsSearchWidgetWrapper()

Member Function Documentation

◆ aggregate()

◆ applyDirectly()

◆ clearExpression()

◆ clearWidget

◆ createExpression()

◆ createFieldIdentifier()

◆ defaultFlags()

◆ exclusiveFilterFlags()

◆ expression()

◆ expressionChanged

◆ fieldIndex()

◆ nonExclusiveFilterFlags()

◆ setAggregate()

◆ setEnabled

◆ setExpression

◆ setFeature

◆ supportedFlags()

◆ toString()

◆ valueChanged

◆ valueCleared

Member Data Documentation

◆ mExpression

◆ mFieldIdx