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.modeling.ui.actions.e4;
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14 import java.util.Arrays;
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15 import java.util.List;
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17 import javax.inject.Named;
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19 import org.eclipse.e4.core.contexts.Active;
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20 import org.eclipse.e4.core.di.annotations.CanExecute;
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21 import org.eclipse.e4.core.di.annotations.Execute;
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22 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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23 import org.eclipse.e4.ui.services.IServiceConstants;
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24 import org.eclipse.jface.viewers.ISelection;
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25 import org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor;
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26 import org.simantics.Simantics;
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27 import org.simantics.db.ReadGraph;
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28 import org.simantics.db.Resource;
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29 import org.simantics.db.common.request.UnaryRead;
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30 import org.simantics.db.common.utils.RequestUtil;
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31 import org.simantics.db.exception.DatabaseException;
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32 import org.simantics.diagram.stubs.DiagramResource;
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33 import org.simantics.modeling.ui.actions.style.EditStyle;
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34 import org.simantics.modeling.ui.diagramEditor.DiagramEditor;
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35 import org.simantics.ui.SimanticsUI;
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36 import org.simantics.ui.utils.ResourceAdaptionUtils;
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41 * TODO : should we have extension point for expanding styles?
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42 * TODO : default ColorChooser is not suitable for this task
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43 * TODO : how to store MetricsFormat template list
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45 * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
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48 public class EditStyleHandler {
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50 private Resource[] lastResources = Resource.NONE;
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51 private boolean cachedCanExecute;
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54 public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection s, @Active MPart part) throws DatabaseException, InterruptedException {
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55 if (!(part.getObject() instanceof CompatibilityEditor))
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57 CompatibilityEditor editor = (CompatibilityEditor) part.getObject();
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58 if (!(editor.getPart() instanceof DiagramEditor))
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63 final Resource[] resources = ResourceAdaptionUtils.toResources(s);
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64 if (resources.length != 0) {
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65 if (!Arrays.equals(resources, lastResources)) {
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66 lastResources = resources;
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67 cachedCanExecute = areStyleProviders(resources);
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69 return cachedCanExecute;
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74 private static boolean areStyleProviders(Resource[] resources) throws DatabaseException, InterruptedException {
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75 return RequestUtil.trySyncRequest(
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76 Simantics.getSession(),
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77 SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,
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78 SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,
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80 new StyleProviderCheck(Arrays.asList(resources)));
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83 private static class StyleProviderCheck extends UnaryRead<List<Resource>, Boolean> {
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85 public StyleProviderCheck(List<Resource> parameter) {
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90 public Boolean perform(ReadGraph graph) throws DatabaseException {
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91 DiagramResource DIA = DiagramResource.getInstance(graph);
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92 // Find what kind of styles selected objects support
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93 for (Resource r : parameter)
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94 if (!graph.isInstanceOf(r, DIA.StyleProvider))
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102 public void execute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection s) {
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103 final Resource[] resources = ResourceAdaptionUtils.toResources(s);
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104 if (resources.length != 0)
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105 EditStyle.openStyleDialog(resources);
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