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

   1 /*******************************************************************************
   2  * Copyright (c) 2012 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  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.diagramEditor;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.common.request.UnaryRead;
  17 import org.simantics.db.common.utils.NameUtils;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
  20 import org.simantics.g2d.diagram.participant.pointertool.TerminalUtil.TerminalInfo;
  21 import org.simantics.g2d.element.ElementUtils;
  22 import org.simantics.layer0.Layer0;
  23 import org.simantics.modeling.ModelingResources;
  24 import org.simantics.modeling.ui.diagramEditor.TerminalInformer.TerminalNamingStrategy;
  25 import org.simantics.structural.stubs.StructuralResource2;
  26 import org.simantics.structural2.queries.Terminal;
  27
  28 /**
  29  * @author Tuukka Lehtonen
  30  */
  31 public final class DefaultTerminalNamingStrategy implements TerminalNamingStrategy {
  32
  33     @Override
  34     public String getName(ReadGraph graph, TerminalInfo info) throws DatabaseException {
  35         Terminal t = graph.syncRequest(new ResolveTerminal(info));
  36         if (t == null)
  37             return "Could not resolve component terminal";
  38         return graph.syncRequest(new TerminalMessage(t));
  39     }
  40
  41     public static class ResolveTerminal extends UnaryRead<TerminalInfo, Terminal> {
  42
  43         public ResolveTerminal(TerminalInfo parameter) {
  44             super(parameter);
  45         }
  46
  47         @Override
  48         public Terminal perform(ReadGraph graph) throws DatabaseException {
  49             ModelingResources mr = ModelingResources.getInstance(graph);
  50
  51             Object elementObject = ElementUtils.getObject(parameter.e);
  52             if (!(elementObject instanceof Resource))
  53                 return null;
  54             Resource element = (Resource) elementObject;
  55
  56             Resource diagramBindingRelation = DiagramGraphUtil.getConnectionPointOfTerminal(graph, parameter.t);
  57             if (diagramBindingRelation == null)
  58                 return null;
  59
  60             Resource component = graph.getPossibleObject(element, mr.ElementToComponent);
  61             Resource connectionRelation = graph.getPossibleObject(diagramBindingRelation, mr.DiagramConnectionRelationToConnectionRelation);
  62             if (component == null || connectionRelation == null)
  63                 return null;
  64
  65             return new Terminal(component, connectionRelation);
  66         }
  67
  68     }
  69
  70     static class TerminalMessage extends UnaryRead<Terminal, String> {
  71
  72         public TerminalMessage(Terminal terminal) {
  73             super(terminal);
  74         }
  75
  76         @Override
  77         public String perform(ReadGraph graph) throws DatabaseException {
  78             Layer0 L0 = Layer0.getInstance(graph);
  79             StructuralResource2 STR = StructuralResource2.getInstance(graph);
  80
  81             String name = getStringPropertyValue(graph, parameter.getRelation(), L0.HasName);
  82             String label = getStringPropertyValue(graph, parameter.getRelation(), L0.HasLabel);
  83             String componentName = NameUtils.getSafeName(graph, parameter.getComponent());
  84             Resource componentType = graph.getPossibleType(parameter.getComponent(), STR.Component);
  85             String componentTypeName = componentType != null
  86                     ? getStringPropertyValue(graph, componentType, L0.HasLabel)
  87                     : null;
  88
  89             StringBuilder sb = new StringBuilder();
  90             if (name.equals(label)) {
  91                 sb.append(name);
  92             } else {
  93                 sb.append("(").append(name).append(") ").append(label);
  94             }
  95             sb.append(" [").append(componentName);
  96             if (componentTypeName != null)
  97                 sb.append(" : ").append(componentTypeName);
  98             sb.append("]");
  99
 100             return sb.toString();
 101         }
 102
 103         private String getStringPropertyValue(ReadGraph graph, Resource entity, Resource property) throws DatabaseException {
 104             String name = graph.getPossibleRelatedValue2(entity, property);
 105             return name != null ? name : NameUtils.getSafeName(graph, entity);
 106         }
 107
 108     }
 109
 110 }