1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.diagram.contribution;
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14 import org.eclipse.core.runtime.Platform;
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15 import org.eclipse.jface.action.Action;
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16 import org.eclipse.jface.action.ActionContributionItem;
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17 import org.eclipse.jface.action.IContributionItem;
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18 import org.eclipse.jface.resource.ImageDescriptor;
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19 import org.eclipse.swt.widgets.Menu;
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20 import org.eclipse.ui.IWorkbenchPart;
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21 import org.simantics.db.ReadGraph;
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22 import org.simantics.db.Session;
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23 import org.simantics.db.exception.DatabaseException;
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24 import org.simantics.g2d.canvas.ICanvasContext;
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25 import org.simantics.g2d.diagram.participant.Selection;
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26 import org.simantics.ui.contribution.DynamicMenuContribution;
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27 import org.simantics.utils.threads.ThreadUtils;
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28 import org.simantics.utils.ui.BundleUtils;
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29 import org.simantics.utils.ui.workbench.WorkbenchUtils;
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33 * @author Antti Villberg
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35 abstract public class DiagramDynamicMenuContribution<T> extends DynamicMenuContribution {
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37 private static final IContributionItem[] NONE = {};
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39 private ICanvasContext canvas;
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42 public void fill(Menu menu, int index) {
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43 // Need to grab active part here, we're still in the SWT thread.
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44 IWorkbenchPart activePart = WorkbenchUtils.getActiveWorkbenchPart();
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45 if (activePart == null)
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47 ICanvasContext ctx = (ICanvasContext) activePart.getAdapter(ICanvasContext.class);
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53 super.fill(menu, index);
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60 protected IContributionItem[] getContributionItems(ReadGraph graph, Object[] selection) throws DatabaseException {
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62 T input = computeInput(graph, selection);
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64 if(input == null) return NONE;
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66 return new IContributionItem[] {
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67 new ActionContributionItem(new Helper(graph.getSession(), canvas, input))
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72 public class Helper extends Action {
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74 private final T input;
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75 protected final Session session;
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76 protected final ICanvasContext context;
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78 public Helper(Session session, ICanvasContext context, T input) {
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79 super(getName(), getImage());
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80 this.session = session;
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81 this.context = context;
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87 perform(session, context, input);
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88 ThreadUtils.asyncExec(context.getThreadAccess(), new Runnable() {
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91 if (context.isDisposed())
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93 Selection selection = context.getAtMostOneItemOfClass(Selection.class);
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94 if (selection != null) {
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95 // This prevents workbench selection from being left over.
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96 // Also prevents scene graph crap from being left on the screen.
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105 protected ImageDescriptor silk(String name) {
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106 return BundleUtils.getImageDescriptorFromBundle(Platform.getBundle("com.famfamfam.silk"), "/icons/" + name);
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109 abstract protected T computeInput(ReadGraph graph, Object[] selection) throws DatabaseException;
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110 abstract protected void perform(Session session, ICanvasContext context, T input);
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111 abstract protected String getName();
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112 abstract protected ImageDescriptor getImage();
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