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