bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/AbstractGraphvizEditorPart.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.graphviz.ui;
  13
  14 import org.eclipse.core.runtime.IProgressMonitor;
  15 import org.eclipse.core.runtime.IStatus;
  16 import org.eclipse.core.runtime.Status;
  17 import org.eclipse.core.runtime.jobs.Job;
  18 import org.eclipse.swt.widgets.Composite;
  19 import org.eclipse.ui.IEditorInput;
  20 import org.eclipse.ui.IEditorSite;
  21 import org.eclipse.ui.PartInitException;
  22 import org.eclipse.ui.part.EditorPart;
  23 import org.simantics.graphviz.Graph;
  24
  25 public abstract class AbstractGraphvizEditorPart extends EditorPart {
  26
  27     GraphvizComponent component;
  28
  29     @Override
  30     public void doSave(IProgressMonitor monitor) {
  31     }
  32
  33     @Override
  34     public void doSaveAs() {
  35     }
  36
  37     @Override
  38     public void init(IEditorSite site, IEditorInput input)
  39         throws PartInitException {
  40         setSite(site);
  41         setInput(input);
  42     }
  43
  44     @Override
  45     public boolean isDirty() {
  46         return false;
  47     }
  48
  49     @Override
  50     public boolean isSaveAsAllowed() {
  51         return false;
  52     }
  53
  54     @Override
  55     public void createPartControl(Composite parent) {
  56         component = new GraphvizComponent(parent, 0);
  57     }
  58
  59         /**
  60          * Sets a new graph to be drawn. This operation may take a while. It can
  61          * be called from any thread.
  62          * @param graph
  63          */
  64     public void setGraph(Graph graph) {
  65         component.setGraph(graph);
  66     }
  67
  68     public void setGraph(Graph graph, String algorithm) {
  69         component.setGraph(graph, algorithm);
  70     }
  71
  72     /**
  73          * Sets a new graph to be drawn. The graph is layouted in a Eclipse job.
  74          * The component is redrawn after the layout is complete.
  75          * @param graph
  76          */
  77     public void asyncSetGraph(final Graph graph) {
  78         Job job = new Job("Layouting a graph") {
  79
  80                         @Override
  81                         protected IStatus run(IProgressMonitor monitor) {
  82                                 setGraph(graph);
  83                                 return Status.OK_STATUS;
  84                         }
  85
  86         };
  87         job.schedule();
  88     }
  89
  90     @Override
  91     public void setFocus() {
  92         if(component != null)
  93                 component.requestFocus();
  94     }
  95
  96 }