QgsExpressionSelectionDialog Class Reference

This class offers a dialog to change feature selections. More...

#include <qgsexpressionselectiondialog.h>

Collaboration diagram for QgsExpressionSelectionDialog:

Public Slots
void	on_mActionSelect_triggered ()
void	on_mActionAddToSelection_triggered ()
void	on_mActionRemoveFromSelection_triggered ()
void	on_mActionSelectInstersect_triggered ()
void	on_mPbnClose_clicked ()

Public Member Functions
	QgsExpressionSelectionDialog (QgsVectorLayer *layer, QString startText=QString(), QWidget *parent=0)
	Creates a new selection dialog.
QgsExpressionBuilderWidget *	expressionBuilder ()
	The builder widget that is used by the dialog.
void	setExpressionText (const QString &text)
	Sets the current expression text.
QString	expressionText ()
	Returns the current expression text.
void	setGeomCalculator (const QgsDistanceArea &da)
	*Sets geometry calculator used in distance/area calculations.

Protected Member Functions
virtual void	closeEvent (QCloseEvent *closeEvent)
	Implementation for closeEvent Saves the window geometry.
virtual void	done (int r)
	Implementation for done (default behavior when pressing esc) Calls close, so the window geometry gets saved and the object deleted.

Private Member Functions
void	saveRecent ()

Private Attributes
QgsVectorLayer *	mLayer

Detailed Description

This class offers a dialog to change feature selections.

To do so, a QgsExpressionBuilderWidget is shown in a dialog. It offers the possibilities to create a new selection, add to the current selection remove from the current selection or select within the current selection.

Note

added in 2.0

Definition at line 30 of file qgsexpressionselectiondialog.h.

Constructor & Destructor Documentation

QgsExpressionSelectionDialog::QgsExpressionSelectionDialog	(	QgsVectorLayer *	layer,
		QString	startText = QString(),
		QWidget *	parent = 0
	)

Creates a new selection dialog.

Parameters

layer	The layer on which the selection is to be performed.
startText	A default expression text to be applied (Defaults to empty)
parent	parent object (owner)

Definition at line 22 of file qgsexpressionselectiondialog.cpp.

References QgsApplication::getThemeIcon().

Member Function Documentation

void QgsExpressionSelectionDialog::closeEvent ( QCloseEvent *  closeEvent )

protectedvirtual

Implementation for closeEvent Saves the window geometry.

Parameters

closeEvent

Event object. Unused.

Definition at line 200 of file qgsexpressionselectiondialog.cpp.

void QgsExpressionSelectionDialog::done ( int  r )

protectedvirtual

Implementation for done (default behavior when pressing esc) Calls close, so the window geometry gets saved and the object deleted.

Parameters

r	Result value. Unused.

Definition at line 213 of file qgsexpressionselectiondialog.cpp.

QgsExpressionBuilderWidget * QgsExpressionSelectionDialog::expressionBuilder

(

)

The builder widget that is used by the dialog.

Returns

The builder widget that is used by the dialog

Definition at line 48 of file qgsexpressionselectiondialog.cpp.

QString QgsExpressionSelectionDialog::expressionText

(

)

Returns the current expression text.

Returns

The expression text

Definition at line 58 of file qgsexpressionselectiondialog.cpp.

void QgsExpressionSelectionDialog::on_mActionAddToSelection_triggered ( )

slot

Definition at line 97 of file qgsexpressionselectiondialog.cpp.

References QgsFeatureIterator::close(), QgsExpression::evaluate(), QgsVectorLayer::getFeatures(), QgsFeature::id(), mLayer, QgsFeatureIterator::nextFeature(), QgsVectorLayer::pendingFields(), QgsExpression::prepare(), saveRecent(), QgsVectorLayer::selectedFeaturesIds(), and QgsVectorLayer::setSelectedFeatures().

void QgsExpressionSelectionDialog::on_mActionRemoveFromSelection_triggered ( )

slot

Definition at line 162 of file qgsexpressionselectiondialog.cpp.

References QgsFeatureIterator::close(), QgsExpression::evaluate(), QgsVectorLayer::getFeatures(), QgsFeature::id(), mLayer, QgsFeatureIterator::nextFeature(), QgsVectorLayer::pendingFields(), QgsExpression::prepare(), saveRecent(), QgsVectorLayer::selectedFeaturesIds(), and QgsVectorLayer::setSelectedFeatures().

void QgsExpressionSelectionDialog::on_mActionSelect_triggered ( )

slot

Definition at line 69 of file qgsexpressionselectiondialog.cpp.

References QgsFeatureIterator::close(), QgsExpression::evaluate(), QgsVectorLayer::getFeatures(), QgsFeature::id(), mLayer, QgsFeatureIterator::nextFeature(), QgsVectorLayer::pendingFields(), QgsExpression::prepare(), saveRecent(), and QgsVectorLayer::setSelectedFeatures().

void QgsExpressionSelectionDialog::on_mActionSelectInstersect_triggered ( )

slot

Definition at line 125 of file qgsexpressionselectiondialog.cpp.

References QgsFeatureIterator::close(), QgsExpression::evaluate(), QgsVectorLayer::getFeatures(), QgsFeature::id(), mLayer, QgsFeatureIterator::nextFeature(), QgsVectorLayer::pendingFields(), QgsExpression::prepare(), saveRecent(), QgsVectorLayer::selectedFeaturesIds(), and QgsVectorLayer::setSelectedFeatures().

void QgsExpressionSelectionDialog::on_mPbnClose_clicked ( )

slot

Definition at line 208 of file qgsexpressionselectiondialog.cpp.

void QgsExpressionSelectionDialog::saveRecent ( )

private

Definition at line 219 of file qgsexpressionselectiondialog.cpp.

Referenced by on_mActionAddToSelection_triggered(), on_mActionRemoveFromSelection_triggered(), on_mActionSelect_triggered(), and on_mActionSelectInstersect_triggered().

void QgsExpressionSelectionDialog::setExpressionText

(

const QString &

text

)

Sets the current expression text.

Parameters

text	the expression text to set

Definition at line 53 of file qgsexpressionselectiondialog.cpp.

void QgsExpressionSelectionDialog::setGeomCalculator

(

const QgsDistanceArea &

da

)

*Sets geometry calculator used in distance/area calculations.

Definition at line 63 of file qgsexpressionselectiondialog.cpp.

Member Data Documentation

QgsVectorLayer* QgsExpressionSelectionDialog::mLayer

private

Definition at line 90 of file qgsexpressionselectiondialog.h.

Referenced by on_mActionAddToSelection_triggered(), on_mActionRemoveFromSelection_triggered(), on_mActionSelect_triggered(), and on_mActionSelectInstersect_triggered().

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

• /tmp/buildd/qgis-2.2.0+wheezy1/src/gui/qgsexpressionselectiondialog.h
• /tmp/buildd/qgis-2.2.0+wheezy1/src/gui/qgsexpressionselectiondialog.cpp