run updates in the UI thread

refs 1191

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/editpart/GraphicalEditPartBase.java

@@ -22,6 +22,7 @@ import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.util.EContentAdapter;
 import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
+import org.eclipse.swt.widgets.Display;
 import org.fortiss.tooling.base.ui.layout.IDiagramLayoutConfiguration;
 import org.fortiss.tooling.kernel.ui.extension.IModelElementHandler;
 import org.fortiss.tooling.kernel.ui.service.IModelElementHandlerService;
@@ -36,7 +37,7 @@ import org.fortiss.tooling.kernel.ui.service.IModelElementHandlerService;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: AABA307F945C1A10D0F3F3C6617901E5
+ * @ConQAT.Rating YELLOW Hash: 0E3088D3491CFA563193129187B7CE82
  */
 public abstract class GraphicalEditPartBase<T extends EObject> extends AbstractGraphicalEditPart {
 
@@ -52,7 +53,14 @@ public abstract class GraphicalEditPartBase<T extends EObject> extends AbstractG
 
 			// if not removing adapters, just refresh everything
 			if(notification.getEventType() != Notification.REMOVING_ADAPTER) {
-				refresh();
+
+				// ensure that refresh is run in the UI thread
+				Display.getDefault().syncExec(new Runnable() {
+					@Override
+					public void run() {
+						refresh();
+					}
+				});
 			}
 		}
 	};