bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/OpenDiagramFromConfigurationAdapter.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.modeling.ui.diagramEditor;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.Collections;\r
  16 \r
  17 import org.eclipse.ui.PlatformUI;\r
  18 import org.simantics.db.ReadGraph;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.common.request.PossibleIndexRoot;\r
  21 import org.simantics.db.common.request.PossibleTypedParent;\r
  22 import org.simantics.db.common.request.ReadRequest;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.layer0.variable.RVI;\r
  25 import org.simantics.db.layer0.variable.Variable;\r
  26 import org.simantics.db.layer0.variable.Variables;\r
  27 import org.simantics.diagram.stubs.DiagramResource;\r
  28 import org.simantics.g2d.canvas.ICanvasContext;\r
  29 import org.simantics.g2d.diagram.DiagramHints;\r
  30 import org.simantics.layer0.Layer0;\r
  31 import org.simantics.modeling.ComponentUtils;\r
  32 import org.simantics.modeling.actions.NavigateToTarget;\r
  33 import org.simantics.modeling.ui.Activator;\r
  34 import org.simantics.structural.stubs.StructuralResource2;\r
  35 import org.simantics.ui.SimanticsUI;\r
  36 import org.simantics.ui.workbench.editor.AbstractResourceEditorAdapter;\r
  37 import org.simantics.utils.datastructures.Pair;\r
  38 import org.simantics.utils.threads.ThreadUtils;\r
  39 \r
  40 /**\r
  41  * @author Tuukka Lehtonen\r
  42  */\r
  43 public class OpenDiagramFromConfigurationAdapter extends AbstractResourceEditorAdapter {\r
  44 \r
  45     private static final String EDITOR_ID = "org.simantics.modeling.ui.diagramEditor";\r
  46 \r
  47     public OpenDiagramFromConfigurationAdapter() {\r
  48         super("Diagram Editor", Activator.COMPOSITE_ICON);\r
  49     }\r
  50 \r
  51     protected String getEditorId() {\r
  52         return EDITOR_ID;\r
  53     }\r
  54 \r
  55     @Override\r
  56     public boolean canHandle(ReadGraph g, Resource r) throws DatabaseException {\r
  57         Resource diagram = getDiagram(g, r, Collections.emptySet());\r
  58         if(diagram == null)\r
  59             return false;\r
  60         \r
  61         // Check if the diagram is locked, because of the locked component type\r
  62         return !isLocked(g, diagram);\r
  63         \r
  64 //        return ComponentUtils.compositeHasDiagram(g, r) /*|| ComponentUtils.componentHasDiagram(g, r)*/;\r
  65     }\r
  66     \r
  67     public static boolean isLocked(ReadGraph g, Resource diagram) throws DatabaseException {\r
  68         StructuralResource2 STR = StructuralResource2.getInstance(g);\r
  69         Resource componentType = g.syncRequest(new PossibleTypedParent(diagram, STR.ComponentType));\r
  70         if(componentType == null)\r
  71             return false; // Not part of a component type\r
  72         \r
  73         return g.hasStatement(componentType, STR.ComponentType_Locked);\r
  74     }\r
  75 \r
  76     @Override\r
  77     public void openEditor(final Resource r) throws Exception {\r
  78         SimanticsUI.getSession().asyncRequest(new ReadRequest() {\r
  79             @Override\r
  80             public void run(ReadGraph g) throws DatabaseException {\r
  81                 openEditor(g, r, getEditorId());\r
  82             }\r
  83         });\r
  84     }\r
  85 \r
  86     /**\r
  87      * @param g\r
  88      * @param configurationComposite\r
  89      * @param editorId\r
  90      * @throws DatabaseException\r
  91      */\r
  92     public static boolean openEditor(ReadGraph g, Resource configurationComposite, final String editorId) throws DatabaseException {\r
  93         return openEditor(g, configurationComposite, editorId, Collections.emptySet());\r
  94     }\r
  95 \r
  96     protected static Resource getDiagram(ReadGraph graph, Resource r, final Collection<Object> selectedObjects) throws DatabaseException {\r
  97 \r
  98         Layer0 L0 = Layer0.getInstance(graph);\r
  99         DiagramResource DIA = DiagramResource.getInstance(graph);\r
 100         \r
 101         if(graph.isInstanceOf(r, DIA.Diagram)) return r;\r
 102         \r
 103         Resource diagram = ComponentUtils.getPossibleCompositeDiagram(graph, r);\r
 104         if(diagram != null) return diagram;\r
 105         \r
 106         if(selectedObjects.size() == 1) {\r
 107                 Object o = selectedObjects.iterator().next();\r
 108                 if(o instanceof Resource) {\r
 109                         Resource res = (Resource)o;\r
 110                         if(graph.isInstanceOf(res, DIA.Element)) {\r
 111                                 return graph.getPossibleObject(res, L0.PartOf);\r
 112                         }\r
 113                 }\r
 114         }\r
 115         \r
 116         return null;\r
 117 \r
 118     }\r
 119 \r
 120     public static Pair<Resource, RVI> getModelAndRVI(ReadGraph graph, Resource configurationComposite) throws DatabaseException {\r
 121         Variable compositeVariable = Variables.getPossibleVariable(graph, configurationComposite);\r
 122         if (compositeVariable == null)\r
 123             return null;\r
 124 \r
 125         Layer0 L0 = Layer0.getInstance(graph);\r
 126         StructuralResource2 STR = StructuralResource2.getInstance(graph);\r
 127         boolean isComponentType = graph.hasStatement(configurationComposite, STR.Defines);\r
 128         Resource rviContext = graph.syncRequest(new PossibleTypedParent(configurationComposite, L0.RVIContext));\r
 129 \r
 130         if (isComponentType || rviContext == null) {\r
 131             Resource indexRoot = graph.sync(new PossibleIndexRoot(configurationComposite));\r
 132             if (indexRoot == null)\r
 133                 return null;\r
 134 \r
 135             return Pair.make(indexRoot, null);\r
 136         }\r
 137 \r
 138         final Resource model = Variables.getPossibleModel(graph, compositeVariable);\r
 139         if (model == null)\r
 140             return null;\r
 141         final RVI rvi = compositeVariable.getPossibleRVI(graph);\r
 142 \r
 143         return Pair.make(model, rvi);\r
 144     }\r
 145 \r
 146     /**\r
 147      * @param g\r
 148      * @param configurationComposite\r
 149      * @param editorId\r
 150      * @param selectedObjects\r
 151      * @throws DatabaseException\r
 152      */\r
 153     public static boolean openEditor(ReadGraph g, Resource r, final String editorId, final Collection<Object> selectedObjects) throws DatabaseException {\r
 154 \r
 155         final Resource diagram = getDiagram(g, r, selectedObjects);\r
 156         if (diagram == null)\r
 157             return false;\r
 158 \r
 159         final Resource configurationComposite = ComponentUtils.getPossibleDiagramComposite(g, diagram);\r
 160         if (configurationComposite == null)\r
 161             return false;\r
 162 \r
 163         Pair<Resource, RVI> modelAndRVI = getModelAndRVI(g, configurationComposite);\r
 164         //System.out.println("modelAndRVI: " + modelAndRVI);\r
 165         if (modelAndRVI == null)\r
 166             return false;\r
 167 \r
 168         final Runnable editorActivator = NavigateToTarget.editorActivator(editorId, diagram, modelAndRVI.first, modelAndRVI.second, part -> {\r
 169             if (selectedObjects.isEmpty())\r
 170                 return;\r
 171 \r
 172             final ICanvasContext openedCanvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);\r
 173             assert openedCanvas != null;\r
 174             // CanvasContext-wide denial of initial zoom-to-fit on diagram open.\r
 175             openedCanvas.getDefaultHintContext().setHint(DiagramHints.KEY_INITIAL_ZOOM_TO_FIT, Boolean.FALSE);\r
 176             //System.out.println("ASDF: " + element);\r
 177             ThreadUtils.asyncExec(openedCanvas.getThreadAccess(),\r
 178                     NavigateToTarget.elementSelectorZoomer(openedCanvas, selectedObjects, false));\r
 179         });\r
 180 \r
 181         PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {\r
 182             @Override\r
 183             public void run() {\r
 184                 editorActivator.run();\r
 185             }\r
 186         });\r
 187 \r
 188         return true;\r
 189     }\r
 190 \r
 191 }\r