Open FileEditorInput when no diagram is present in the resource

plugins/org.yakindu.sct.simulation.ui/src/org/yakindu/sct/simulation/ui/model/presenter/SCTSourceDisplay.java

@@ -14,15 +14,22 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 
+import org.eclipse.core.resources.IFile;
 import org.eclipse.debug.core.model.DebugElement;
 import org.eclipse.debug.ui.sourcelookup.ISourceDisplay;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.emf.ecore.resource.URIConverter;
 import org.eclipse.emf.ecore.util.EcoreUtil;
+import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
 import org.eclipse.gmf.runtime.notation.Diagram;
 import org.eclipse.gmf.runtime.notation.NotationPackage;
+import org.eclipse.ui.IEditorDescriptor;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.part.FileEditorInput;
 import org.yakindu.sct.simulation.core.engine.ISimulationEngine;
 import org.yakindu.sct.ui.editor.partitioning.DiagramPartitioningUtil;
 
@@ -73,17 +80,35 @@ public class SCTSourceDisplay implements ISourceDisplay {
 
 	private IEditorPart openEditor(DebugElement debugElement, IWorkbenchPage page) {
 		EObject semanticObject = (EObject) debugElement.getAdapter(EObject.class);
+
 		Diagram diagram = DiagramPartitioningUtil.getDiagramContaining(semanticObject);
-		Resource sharedDomainResource = DiagramPartitioningUtil.getSharedDomain().getResourceSet()
-				.getResource(semanticObject.eResource().getURI(), true);
-		Collection<Diagram> contents = EcoreUtil.getObjectsByType(sharedDomainResource.getContents(),
-				NotationPackage.Literals.DIAGRAM);
-		for (Diagram diag : contents) {
-			if (EcoreUtil.equals(diag.getElement(), diagram.getElement())) {
-				return DiagramPartitioningUtil.openEditor((Diagram) diag);
+		if (diagram != null) {
+			if (URIConverter.INSTANCE.exists(semanticObject.eResource().getURI(), null)) {
+				Resource sharedDomainResource = DiagramPartitioningUtil.getSharedDomain().getResourceSet()
+						.getResource(semanticObject.eResource().getURI(), true);
+
+				Collection<Diagram> contents = EcoreUtil.getObjectsByType(sharedDomainResource.getContents(),
+						NotationPackage.Literals.DIAGRAM);
+				for (Diagram diag : contents) {
+					if (EcoreUtil.equals(diag.getElement(), diagram.getElement())) {
+						return DiagramPartitioningUtil.openEditor((Diagram) diag);
+					}
+				}
+			}
+			// No diagram for the semantic element -> open the default editor
+			// for the file
+		} else {
+			IFile file = (IFile) debugElement.getAdapter(IFile.class);
+			if (file == null)
+				file = WorkspaceSynchronizer.getFile(semanticObject.eResource());
+			IEditorDescriptor desc = PlatformUI.getWorkbench().getEditorRegistry().getDefaultEditor(file.getName());
+			try {
+				return page.openEditor(new FileEditorInput(file), desc.getId());
+			} catch (PartInitException e) {
+				e.printStackTrace();
 			}
 		}
-		throw new RuntimeException("No Diagram found for semantic object " + semanticObject);
+		throw new RuntimeException("No editor found for semantic element " + semanticObject);
 	}
 
 }