gerrit.simantics Code Review - simantics/platform.git/blob

   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.modeling.ui.diagramEditor;
  13
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.HashSet;
  17 import java.util.Set;
  18
  19 import org.eclipse.ui.PlatformUI;
  20 import org.simantics.Simantics;
  21 import org.simantics.db.ReadGraph;
  22 import org.simantics.db.Resource;
  23 import org.simantics.db.common.request.PossibleIndexRoot;
  24 import org.simantics.db.common.request.PossibleTypedParent;
  25 import org.simantics.db.common.request.ReadRequest;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.layer0.variable.RVI;
  28 import org.simantics.db.layer0.variable.Variable;
  29 import org.simantics.db.layer0.variable.Variables;
  30 import org.simantics.diagram.stubs.DiagramResource;
  31 import org.simantics.g2d.canvas.ICanvasContext;
  32 import org.simantics.g2d.diagram.DiagramHints;
  33 import org.simantics.layer0.Layer0;
  34 import org.simantics.modeling.ComponentUtils;
  35 import org.simantics.modeling.actions.NavigateToTarget;
  36 import org.simantics.modeling.ui.Activator;
  37 import org.simantics.structural.stubs.StructuralResource2;
  38 import org.simantics.ui.workbench.editor.AbstractResourceEditorAdapter;
  39 import org.simantics.utils.datastructures.Pair;
  40 import org.simantics.utils.threads.ThreadUtils;
  41
  42 /**
  43  * @author Tuukka Lehtonen
  44  */
  45 public class OpenDiagramFromConfigurationAdapter extends AbstractResourceEditorAdapter {
  46
  47     private static final String EDITOR_ID = "org.simantics.modeling.ui.diagramEditor"; //$NON-NLS-1$
  48
  49     public OpenDiagramFromConfigurationAdapter() {
  50         super(Messages.OpenDiagramFromConfigurationAdapter_DiagramEditor, Activator.COMPOSITE_ICON);
  51     }
  52
  53     protected String getEditorId() {
  54         return EDITOR_ID;
  55     }
  56
  57     @Override
  58     public boolean canHandle(ReadGraph g, Resource r) throws DatabaseException {
  59         Resource diagram = getDiagram(g, r, Collections.emptySet());
  60         if(diagram == null)
  61             return false;
  62
  63         // Check if the diagram is locked, because of the locked component type
  64         return !isLocked(g, diagram);
  65
  66 //        return ComponentUtils.compositeHasDiagram(g, r) /*|| ComponentUtils.componentHasDiagram(g, r)*/;
  67     }
  68
  69     public static boolean isLocked(ReadGraph g, Resource diagram) throws DatabaseException {
  70         StructuralResource2 STR = StructuralResource2.getInstance(g);
  71         Resource componentType = g.syncRequest(new PossibleTypedParent(diagram, STR.ComponentType));
  72         if(componentType == null)
  73             return false; // Not part of a component type
  74
  75         return g.hasStatement(componentType, STR.ComponentType_Locked);
  76     }
  77
  78     @Override
  79     public void openEditor(final Resource r) throws Exception {
  80         Simantics.getSession().asyncRequest(new ReadRequest() {
  81             @Override
  82             public void run(ReadGraph g) throws DatabaseException {
  83                 openEditor(g, r, getEditorId());
  84             }
  85         });
  86     }
  87
  88     /**
  89      * @param g
  90      * @param configurationComposite
  91      * @param editorId
  92      * @throws DatabaseException
  93      */
  94     public static boolean openEditor(ReadGraph g, Resource configurationComposite, final String editorId) throws DatabaseException {
  95         return openEditor(g, configurationComposite, editorId, Collections.emptySet());
  96     }
  97
  98     protected static Resource getDiagram(ReadGraph graph, Resource r, final Collection<Object> selectedObjects) throws DatabaseException {
  99
 100         Layer0 L0 = Layer0.getInstance(graph);
 101         DiagramResource DIA = DiagramResource.getInstance(graph);
 102
 103         if(graph.isInstanceOf(r, DIA.Diagram)) return r;
 104
 105         Resource diagram = ComponentUtils.getPossibleCompositeDiagram(graph, r);
 106         if(diagram != null) return diagram;
 107
 108         // TODO: what if the selected objects are from different diagrams?
 109         if (selectedObjects.size() > 0) {
 110             Set<Resource> diagrams = new HashSet<>();
 111             for (Object o : selectedObjects) {
 112                 if (o instanceof Resource) {
 113                     Resource res = (Resource)o;
 114                     if (graph.isInstanceOf(res, DIA.Element)) {
 115                         diagrams.add(graph.getPossibleObject(res, L0.PartOf));
 116                     }
 117                 }
 118             }
 119             if (diagrams.size() == 1) {
 120                 return diagrams.iterator().next();
 121             }
 122         }
 123         return null;
 124
 125     }
 126
 127     public static Pair<Resource, RVI> getModelAndRVI(ReadGraph graph, Resource configurationComposite) throws DatabaseException {
 128         Variable compositeVariable = Variables.getPossibleVariable(graph, configurationComposite);
 129         if (compositeVariable == null)
 130             return null;
 131
 132         Layer0 L0 = Layer0.getInstance(graph);
 133         StructuralResource2 STR = StructuralResource2.getInstance(graph);
 134         boolean isComponentType = graph.hasStatement(configurationComposite, STR.Defines);
 135         Resource rviContext = graph.syncRequest(new PossibleTypedParent(configurationComposite, L0.RVIContext));
 136
 137         if (isComponentType || rviContext == null) {
 138             Resource indexRoot = graph.sync(new PossibleIndexRoot(configurationComposite));
 139             if (indexRoot == null)
 140                 return null;
 141
 142             return Pair.make(indexRoot, null);
 143         }
 144
 145         final Resource model = Variables.getPossibleModel(graph, compositeVariable);
 146         if (model == null)
 147             return null;
 148         final RVI rvi = compositeVariable.getPossibleRVI(graph);
 149
 150         return Pair.make(model, rvi);
 151     }
 152
 153     /**
 154      * @param g
 155      * @param configurationComposite
 156      * @param editorId
 157      * @param selectedObjects
 158      * @throws DatabaseException
 159      */
 160     public static boolean openEditor(ReadGraph g, Resource r, String editorId, Collection<Object> selectedObjects) throws DatabaseException {
 161         Resource diagram = getDiagram(g, r, selectedObjects);
 162         Resource configurationComposite = diagram != null ? ComponentUtils.getPossibleDiagramComposite(g, diagram) : null;
 163         Pair<Resource, RVI> modelAndRVI = configurationComposite != null ? getModelAndRVI(g, configurationComposite) : null;
 164         //System.out.println("modelAndRVI: " + modelAndRVI);
 165         if (modelAndRVI == null)
 166             return false;
 167         scheduleOpenEditor(editorId, diagram, modelAndRVI.first, modelAndRVI.second, selectedObjects);
 168         return true;
 169     }
 170
 171     /**
 172      * @param g
 173      * @param configurationComposite
 174      * @param editorId
 175      * @param selectedObjects
 176      * @throws DatabaseException
 177      */
 178     public static boolean openEditor(ReadGraph g, Resource r, String editorId, Collection<Object> selectedObjects, Resource model, RVI rvi) throws DatabaseException {
 179         Resource diagram = getDiagram(g, r, selectedObjects);
 180         if (diagram == null)
 181             return false;
 182         scheduleOpenEditor(editorId, diagram, model, rvi, selectedObjects);
 183         return true;
 184     }
 185
 186     /**
 187      * @param g
 188      * @param configurationComposite
 189      * @param editorId
 190      * @param selectedObjects
 191      * @throws DatabaseException
 192      */
 193     private static void scheduleOpenEditor(String editorId, Resource diagram, Resource model, RVI rvi, Collection<Object> selectedObjects) throws DatabaseException {
 194         Runnable editorActivator = NavigateToTarget.editorActivator(editorId, diagram, model, rvi, part -> {
 195             if (selectedObjects.isEmpty())
 196                 return;
 197             ICanvasContext openedCanvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);
 198             assert openedCanvas != null;
 199             // CanvasContext-wide denial of initial zoom-to-fit on diagram open.
 200             openedCanvas.getDefaultHintContext().setHint(DiagramHints.KEY_INITIAL_ZOOM_TO_FIT, Boolean.FALSE);
 201             ThreadUtils.asyncExec(openedCanvas.getThreadAccess(),
 202                     NavigateToTarget.elementSelectorZoomer(openedCanvas, selectedObjects, false));
 203         });
 204         PlatformUI.getWorkbench().getDisplay().asyncExec(editorActivator);
 205     }
 206
 207 }