code improvements to accomodate MSC editors

refs 693

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/layout/RectangleGridLayoutDiagramConfiguration.java

@@ -52,7 +52,7 @@ import org.fortiss.tooling.base.ui.utils.LayoutDataUtils;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating GREEN Hash: D47CAC361395764DABE025B37FFBF163
+ * @ConQAT.Rating YELLOW Hash: 23C911F8A8FC42CEF3B3271ED0277B6F
  */
 public class RectangleGridLayoutDiagramConfiguration extends
 		DiagramLayoutConfigurationBase {
@@ -102,8 +102,7 @@ public class RectangleGridLayoutDiagramConfiguration extends
 			StickyConnectorEditPartBase<? extends ILayoutedModelElement> connectorEditPart,
 			IFigure connectorFigure) {
 		// get the bounds of the parent
-		Rectangle containerBounds = getNodeBounds(connectorEditPart
-				.getParentEditPart().getModel());
+		Rectangle containerBounds = getContainerBounds(connectorEditPart);
 		// get the child position relative to the parent
 		Point childPos = connectorFigure.getBounds().getLocation()
 				.getTranslated(containerBounds.getLocation().getNegated());
@@ -141,6 +140,15 @@ public class RectangleGridLayoutDiagramConfiguration extends
 		request.setMoveDelta(relativePos);
 	}
 
+	/**
+	 * Returns the bounds of the container figure on the edges of which the
+	 * connector will be sticked.
+	 */
+	protected Rectangle getContainerBounds(
+			StickyConnectorEditPartBase<? extends ILayoutedModelElement> connectorEditPart) {
+		return getNodeBounds(connectorEditPart.getParentEditPart().getModel());
+	}
+
 	/** {@inheritDoc} */
 	@Override
 	public void alterElementMoveAndResizeFeedbackRequest(