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diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/OpenDiagramFromSymbolAdapter.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/OpenDiagramFromSymbolAdapter.java
new file mode 100644
index 000000000..fd8925a87
--- /dev/null
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/OpenDiagramFromSymbolAdapter.java
@@ -0,0 +1,88 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.modeling.ui.diagramEditor;
+
+import java.util.Collection;
+
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.PlatformUI;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.PossibleIndexRoot;
+import org.simantics.db.common.request.ReadRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.RVI;
+import org.simantics.diagram.stubs.DiagramResource;
+import org.simantics.modeling.ModelingResources;
+import org.simantics.modeling.ui.Activator;
+import org.simantics.structural.stubs.StructuralResource2;
+import org.simantics.ui.SimanticsUI;
+import org.simantics.ui.workbench.ResourceEditorInput2;
+import org.simantics.ui.workbench.editor.AbstractResourceEditorAdapter;
+import org.simantics.utils.ui.ErrorLogger;
+import org.simantics.utils.ui.workbench.WorkbenchUtils;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class OpenDiagramFromSymbolAdapter extends AbstractResourceEditorAdapter {
+
+    private static final String EDITOR_ID = "org.simantics.modeling.ui.symbolEditor";
+
+    public OpenDiagramFromSymbolAdapter() {
+        super("Symbol Editor", Activator.SYMBOL_ICON);
+    }
+
+    protected String getEditorId() {
+        return EDITOR_ID;
+    }
+
+    @Override
+    public boolean canHandle(ReadGraph g, Resource r) throws DatabaseException {
+        if(!g.isInheritedFrom(r, DiagramResource.getInstance(g).DefinedElement))
+            return false;
+        Resource componentType = g.getPossibleObject(r, ModelingResources.getInstance(g).SymbolToComponentType);
+        if(componentType == null)
+            return false;
+        return !OpenDiagramFromConfigurationAdapter.isLocked(g, componentType);
+    }
+
+    @Override
+    public void openEditor(final Resource r) throws Exception {
+        SimanticsUI.getSession().asyncRequest(new ReadRequest() {
+            @Override
+            public void run(ReadGraph g) throws DatabaseException {
+                StructuralResource2 sr = StructuralResource2.getInstance(g);
+                final Collection<Resource> dias = g.getObjects(r, sr.IsDefinedBy);
+                if (dias.isEmpty())
+                    return;
+
+            	final Resource model = g.sync(new PossibleIndexRoot(r));
+            	if(model == null) return;
+
+                PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
+                    @Override
+                    public void run() {
+                        for(Resource dia : dias)
+                            try {
+                                String editorId = getEditorId();
+                                WorkbenchUtils.openEditor(editorId, new ResourceEditorInput2(editorId, dia, model, (RVI)null));
+                            } catch (PartInitException e) {
+                                ErrorLogger.defaultLogError(e);
+                            }
+                    }
+                });
+            }
+        });
+    }
+
+}