org.fortiss.tooling.base.ui:

- TreeViewerEditorBase: Wrap the refresh call into a asyncExec method to avoid invalid tread access when a model is modified which is open in a TreeViewer editor. 

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/editor/TreeViewerEditorBase.java

@@ -28,6 +28,7 @@ import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.util.EContentAdapter;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
 import org.fortiss.tooling.base.ui.dnd.jface.ViewerElementCompositionDropAdapter;
 import org.fortiss.tooling.kernel.ui.extension.base.EditorBase;
 
@@ -53,7 +54,7 @@ public abstract class TreeViewerEditorBase<T extends EObject> extends EditorBase
 			super.notifyChanged(notification);
 			if(notification.getEventType() != Notification.REMOVING_ADAPTER &&
 					!treeViewer.getTree().isDisposed()) {
-				treeViewer.refresh(true);
+				Display.getDefault().asyncExec(() -> treeViewer.refresh(true));
 			}
 		}
 	};