19 #include "qgsexpression.h" 36 connect( mActionSelect, &QAction::triggered,
this, &QgsExpressionSelectionDialog::mActionSelect_triggered );
37 connect( mActionAddToSelection, &QAction::triggered,
this, &QgsExpressionSelectionDialog::mActionAddToSelection_triggered );
38 connect( mActionRemoveFromSelection, &QAction::triggered,
this, &QgsExpressionSelectionDialog::mActionRemoveFromSelection_triggered );
39 connect( mActionSelectIntersect, &QAction::triggered,
this, &QgsExpressionSelectionDialog::mActionSelectIntersect_triggered );
40 connect( mButtonZoomToFeatures, &QToolButton::clicked,
this, &QgsExpressionSelectionDialog::mButtonZoomToFeatures_clicked );
41 connect( mPbnClose, &QPushButton::clicked,
this, &QgsExpressionSelectionDialog::mPbnClose_clicked );
43 setWindowTitle( QStringLiteral(
"Select by Expression - %1" ).arg( layer->
name() ) );
50 mButtonSelect->addAction( mActionSelect );
51 mButtonSelect->addAction( mActionAddToSelection );
52 mButtonSelect->addAction( mActionRemoveFromSelection );
53 mButtonSelect->addAction( mActionSelectIntersect );
54 mButtonSelect->setDefaultAction( mActionSelect );
56 mExpressionBuilder->setLayer( layer );
57 mExpressionBuilder->setExpressionText( startText );
58 mExpressionBuilder->loadFieldNames();
59 mExpressionBuilder->loadRecent( QStringLiteral(
"Selection" ) );
62 mExpressionBuilder->setExpressionContext( context );
65 mButtonZoomToFeatures->setVisible(
false );
67 connect( buttonBox, &QDialogButtonBox::helpRequested,
this, &QgsExpressionSelectionDialog::showHelp );
72 return mExpressionBuilder;
77 mExpressionBuilder->setExpressionText( text );
82 return mExpressionBuilder->expressionText();
88 mExpressionBuilder->setGeomCalculator( da );
93 mMessageBar = messageBar;
99 mButtonZoomToFeatures->setVisible(
true );
102 void QgsExpressionSelectionDialog::mActionSelect_triggered()
109 void QgsExpressionSelectionDialog::mActionAddToSelection_triggered()
116 void QgsExpressionSelectionDialog::mActionSelectIntersect_triggered()
123 void QgsExpressionSelectionDialog::mActionRemoveFromSelection_triggered()
130 void QgsExpressionSelectionDialog::mButtonZoomToFeatures_clicked()
132 if ( mExpressionBuilder->expressionText().isEmpty() || !mMapCanvas )
138 .setExpressionContext( context )
146 int featureCount = 0;
160 int timeout = settings.
value( QStringLiteral(
"qgis/messageTimeout" ), 5 ).toInt();
161 if ( featureCount > 0 )
167 tr(
"Zoomed to %n matching feature(s)",
"number of matching features", featureCount ),
172 else if ( mMessageBar )
175 tr(
"No matching features found" ),
184 QDialog::closeEvent( closeEvent );
187 void QgsExpressionSelectionDialog::mPbnClose_clicked()
198 void QgsExpressionSelectionDialog::saveRecent()
200 mExpressionBuilder->saveToRecent( QStringLiteral(
"Selection" ) );
203 void QgsExpressionSelectionDialog::showHelp()
205 QgsHelp::openHelp( QStringLiteral(
"introduction/general_tools.html#automatic-selection" ) );
Wrapper for iterator of features from vector data provider or vector layer.
A rectangle specified with double values.
virtual bool isEmpty() const
Returns true if the geometry is empty.
void setMinimal()
Set a rectangle so that min corner is at max and max corner is at min.
bool isNull() const
Returns true if the geometry is null (ie, contains no underlying geometry accessible via geometry() )...
This class is a composition of two QSettings instances:
QString expressionText()
Returns the current expression text.
void zoomToFeatureExtent(QgsRectangle &rect)
Zooms to feature extent.
Remove from current selection.
QgsFeatureRequest & setSubsetOfAttributes(const QgsAttributeList &attrs)
Set a subset of attributes that will be fetched.
A bar for displaying non-blocking messages to the user.
A geometry is the spatial representation of a feature.
static QIcon getThemeIcon(const QString &name)
Helper to get a theme icon.
QgsExpressionSelectionDialog(QgsVectorLayer *layer, const QString &startText=QString(), QWidget *parent=nullptr)
Creates a new selection dialog.
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
static QgsGui * instance()
Returns a pointer to the singleton instance.
Map canvas is a class for displaying all GIS data types on a canvas.
QgsFeatureRequest & setFilterExpression(const QString &expression)
Set the filter expression.
void setGeomCalculator(const QgsDistanceArea &da)
Sets geometry calculator used in distance/area calculations.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
void closeEvent(QCloseEvent *closeEvent) override
Implementation for closeEvent Saves the window geometry.
void done(int r) override
Implementation for done (default behavior when pressing esc) Calls close, so the window geometry gets...
This class wraps a request for features to a vector layer (or directly its vector data provider)...
QgsRectangle layerExtentToOutputExtent(const QgsMapLayer *layer, QgsRectangle extent) const
transform bounding box from layer's CRS to output CRS
void setMessageBar(QgsMessageBar *messageBar)
Sets the message bar to display feedback from the dialog.
static QList< QgsExpressionContextScope * > globalProjectLayerScopes(const QgsMapLayer *layer)
Creates a list of three scopes: global, layer's project and layer.
void pushMessage(const QString &text, Qgis::MessageLevel level=Qgis::Info, int duration=5)
convenience method for pushing a message to the bar
QgsGeometry geometry() const
Returns the geometry associated with this feature.
Add selection to current selection.
QgsExpressionBuilderWidget * expressionBuilder()
The builder widget that is used by the dialog.
void setExpressionText(const QString &text)
Sets the current expression text.
Set selection, removing any existing selection.
QgsFeatureIterator getFeatures(const QgsFeatureRequest &request=QgsFeatureRequest()) const override
Query the layer for features specified in request.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
const QgsMapSettings & mapSettings() const
Get access to properties used for map rendering.
void combineExtentWith(const QgsRectangle &rect)
Expand the rectangle so that covers both the original rectangle and the given rectangle.
A general purpose distance and area calculator, capable of performing ellipsoid based calculations...
Modify current selection to include only select features which match.
void selectByExpression(const QString &expression, SelectBehavior behavior=SetSelection)
Select matching features using an expression.
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), const Section section=NoSection) const
Returns the value for setting key.
QgsRectangle boundingBox() const
Returns the bounding box of the geometry.
static void enableAutoGeometryRestore(QWidget *widget, const QString &key=QString())
Register the widget to allow its position to be automatically saved and restored when open and closed...
static void openHelp(const QString &key)
Opens help topic for the given help key using default system web browser.
QList< int > QgsAttributeList
bool nextFeature(QgsFeature &f)
Represents a vector layer which manages a vector based data sets.
void setMapCanvas(QgsMapCanvas *canvas)
Sets a map canvas associated with the dialog.