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diff --git a/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/AbstractGraphvizEditorPart.java b/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/AbstractGraphvizEditorPart.java
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index 000000000..cd14c7137
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+++ b/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/AbstractGraphvizEditorPart.java
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+/*******************************************************************************
+ * 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.graphviz.ui;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.ui.IEditorInput;
+import org.eclipse.ui.IEditorSite;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.part.EditorPart;
+import org.simantics.graphviz.Graph;
+
+public abstract class AbstractGraphvizEditorPart extends EditorPart {
+
+    GraphvizComponent component;
+    
+    @Override
+    public void doSave(IProgressMonitor monitor) {
+    }
+
+    @Override
+    public void doSaveAs() {
+    }
+
+    @Override
+    public void init(IEditorSite site, IEditorInput input)
+        throws PartInitException {
+        setSite(site);
+        setInput(input);
+    }
+
+    @Override
+    public boolean isDirty() {
+        return false;
+    }
+
+    @Override
+    public boolean isSaveAsAllowed() {
+        return false;
+    }
+
+    @Override
+    public void createPartControl(Composite parent) {       
+        component = new GraphvizComponent(parent, 0);
+    }
+    
+	/**
+	 * Sets a new graph to be drawn. This operation may take a while. It can
+	 * be called from any thread.
+	 * @param graph
+	 */
+    public void setGraph(Graph graph) {
+    	component.setGraph(graph);
+    }
+    
+    public void setGraph(Graph graph, String algorithm) {
+    	component.setGraph(graph, algorithm);
+    }
+
+    /**
+	 * Sets a new graph to be drawn. The graph is layouted in a Eclipse job.
+	 * The component is redrawn after the layout is complete.
+	 * @param graph
+	 */
+    public void asyncSetGraph(final Graph graph) {
+    	Job job = new Job("Layouting a graph") {
+
+			@Override
+			protected IStatus run(IProgressMonitor monitor) {
+				setGraph(graph);
+				return Status.OK_STATUS;
+			}
+    		
+    	};
+    	job.schedule();
+    }
+    
+    @Override
+    public void setFocus() {
+        if(component != null)
+        	component.requestFocus();
+    }
+
+}