mirror of
https://github.com/qgis/QGIS.git
synced 2025-11-20 00:04:03 -05:00
c49b5b777f
Rationale: - there was a lot of large objects passed by value, so potentially there's a speed bump from this - even for implicitly shared classes like QString/QList there's still a (small) cost for copying the objects when there's no reason to - it's the right thing to do!
75 lines
2.1 KiB
Plaintext
75 lines
2.1 KiB
Plaintext
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class QgsRelationReferenceWidget : QWidget
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{
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%TypeHeaderCode
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#include <qgsrelationreferencewidget.h>
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%End
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public:
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enum CanvasExtent
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{
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Fixed,
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Pan,
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Scale
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};
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explicit QgsRelationReferenceWidget( QWidget* parent /TransferThis/ );
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~QgsRelationReferenceWidget();
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void setRelation( const QgsRelation& relation, bool allowNullValue );
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void setRelationEditable( bool editable );
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//! this sets the related feature using from the foreign key
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void setForeignKey( const QVariant &value );
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//! returns the related feature foreign key
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QVariant foreignKey();
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void setEditorContext( const QgsAttributeEditorContext& context, QgsMapCanvas* canvas, QgsMessageBar* messageBar );
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//! determines if the form of the related feature will be shown
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bool embedForm();
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void setEmbedForm( bool display );
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//! determines if the foreign key is shown in a combox box or a read-only line edit
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bool readOnlySelector();
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void setReadOnlySelector( bool readOnly );
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//! determines if the widge offers the possibility to select the related feature on the map (using a dedicated map tool)
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bool allowMapIdentification();
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void setAllowMapIdentification( bool allowMapIdentification );
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//! If the widget will order the combobox entries by value
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bool orderByValue();
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//! Set if the widget will order the combobox entries by value
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void setOrderByValue( bool orderByValue );
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//! determines the open form button is visible in the widget
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bool openFormButtonVisible();
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void setOpenFormButtonVisible( bool openFormButtonVisible );
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//! return the related feature (from the referenced layer)
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//! if no feature is related, it returns an invalid feature
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QgsFeature referencedFeature();
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public slots:
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//! open the form of the related feature in a new dialog
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void openForm();
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//! activate the map tool to select a new related feature on the map
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void mapIdentification();
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//! unset the currently related feature
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void deleteForeignKey();
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protected:
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virtual void showEvent( QShowEvent* e );
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void init();
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signals:
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void foreignKeyChanged( QVariant );
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};
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