more public methods, fix delete map tool

python/gui/editorwidgets/qgsrelationreferencewidget.sip

@@ -45,12 +45,21 @@ class QgsRelationReferenceWidget : QWidget
     bool openFormButtonVisible();
     void setOpenFormButtonVisible( bool openFormButtonVisible );
 
+    //! return the related feature (from the referenced layer)
+    //! if no feature is related, it returns an invalid feature
+    QgsFeature referencedFeature();
+
   public slots:
     //! open the form of the related feature in a new dialog
     void openForm();
-    //! activate the map tool to select the related feature on the map
+
+    //! activate the map tool to select a new related feature on the map
     void mapIdentification();
 
+    //! unset the currently related feature
+    void deleteForeignKey();
+
+
   protected:
     virtual void showEvent( QShowEvent* e );
 

python/gui/qgsmaptoolidentifyfeature.sip

@@ -11,6 +11,8 @@ class QgsMapToolIdentifyFeature : QgsMapToolIdentify
      * @param vl the vector layer. The map tool can be initialized without any layer and can be set afterward.
      */
     QgsMapToolIdentifyFeature( QgsMapCanvas* canvas, QgsVectorLayer* vl = 0 );
+    
+    ~QgsMapToolIdentifyFeature();
 
     //! change the layer used by the map tool to identify
     void setLayer( QgsVectorLayer* vl );

src/gui/editorwidgets/qgsrelationreferencewidget.cpp

@@ -138,7 +138,8 @@ QgsRelationReferenceWidget::~QgsRelationReferenceWidget()
 {
   deleteHighlight();
   unsetMapTool();
-  delete mMapTool;
+  if ( mMapTool )
+    delete mMapTool;
 }
 
 void QgsRelationReferenceWidget::setRelation( QgsRelation relation, bool allowNullValue )
@@ -277,7 +278,7 @@ void QgsRelationReferenceWidget::deleteForeignKey()
   emit foreignKeyChanged( QVariant( QVariant::Int ) );
 }
 
-QgsFeature QgsRelationReferenceWidget::relatedFeature()
+QgsFeature QgsRelationReferenceWidget::referencedFeature()
 {
   QgsFeature f;
   if ( mReferencedLayer )
@@ -422,7 +423,7 @@ void QgsRelationReferenceWidget::highlightActionTriggered( QAction* action )
 
 void QgsRelationReferenceWidget::openForm()
 {
-  QgsFeature feat = relatedFeature();
+  QgsFeature feat = referencedFeature();
 
   if ( !feat.isValid() )
     return;
@@ -439,7 +440,7 @@ void QgsRelationReferenceWidget::highlightFeature( QgsFeature f, CanvasExtent ca
 
   if ( !f.isValid() )
   {
-    f = relatedFeature();
+    f = referencedFeature();
     if ( !f.isValid() )
       return;
   }

src/gui/editorwidgets/qgsrelationreferencewidget.h

@@ -75,12 +75,20 @@ class GUI_EXPORT QgsRelationReferenceWidget : public QWidget
     bool openFormButtonVisible() {return mOpenFormButtonVisible;}
     void setOpenFormButtonVisible( bool openFormButtonVisible );
 
+    //! return the related feature (from the referenced layer)
+    //! if no feature is related, it returns an invalid feature
+    QgsFeature referencedFeature();
+
   public slots:
     //! open the form of the related feature in a new dialog
     void openForm();
-    //! activate the map tool to select the related feature on the map
+
+    //! activate the map tool to select a new related feature on the map
     void mapIdentification();
 
+    //! unset the currently related feature
+    void deleteForeignKey();
+
   protected:
     virtual void showEvent( QShowEvent* e );
 
@@ -93,13 +101,11 @@ class GUI_EXPORT QgsRelationReferenceWidget : public QWidget
     void highlightActionTriggered( QAction* action );
     void deleteHighlight();
     void comboReferenceChanged( int index );
-    void deleteForeignKey();
     void featureIdentified( const QgsFeature& feature );
     void unsetMapTool();
     void mapToolDeactivated();
 
   private:
-    QgsFeature relatedFeature();
     void highlightFeature( QgsFeature f = QgsFeature(), CanvasExtent canvasExtent = Fixed );
     void updateAttributeEditorFrame( const QgsFeature feature );
 

src/gui/qgsmaptoolidentifyfeature.cpp

@@ -29,6 +29,10 @@ QgsMapToolIdentifyFeature::QgsMapToolIdentifyFeature( QgsMapCanvas* canvas, QgsV
   mCursor = QCursor( cursorPixmap, 1, 1 );
 }
 
+QgsMapToolIdentifyFeature::~QgsMapToolIdentifyFeature()
+{
+}
+
 void QgsMapToolIdentifyFeature::canvasReleaseEvent( QMouseEvent* e )
 {
 

src/gui/qgsmaptoolidentifyfeature.h

@@ -35,8 +35,10 @@ class GUI_EXPORT QgsMapToolIdentifyFeature : public QgsMapToolIdentify
      */
     QgsMapToolIdentifyFeature( QgsMapCanvas* canvas, QgsVectorLayer* vl = 0 );
 
+    ~QgsMapToolIdentifyFeature();
+
     //! change the layer used by the map tool to identify
-    void setLayer( QgsVectorLayer* vl ){ mLayer = vl; }
+    void setLayer( QgsVectorLayer* vl ) { mLayer = vl; }
 
     virtual void canvasReleaseEvent( QMouseEvent* e );