bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/layer/GraphLayerUtil.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.diagram.synchronization.graph.layer;
  13
  14 import java.util.HashMap;
  15 import java.util.Map;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.WriteGraph;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.exception.ManyObjectsForFunctionalRelationException;
  22 import org.simantics.db.exception.ServiceException;
  23 import org.simantics.diagram.stubs.DiagramResource;
  24 import org.simantics.layer0.Layer0;
  25
  26 /**
  27  * Utilities for manipulating diagram layers in the graph.
  28  *
  29  * @author Tuukka Lehtonen
  30  */
  31 public final class GraphLayerUtil implements IGraphLayerUtil {
  32
  33     public GraphLayerUtil(Resource layer) {
  34     }
  35
  36     @Override
  37     public GraphLayer createLayer(WriteGraph graph, String layerName, boolean active) throws DatabaseException {
  38         Layer0 L0 = Layer0.getInstance(graph);
  39         DiagramResource DIA = DiagramResource.getInstance(graph);
  40
  41         Resource layer = graph.newResource();
  42         graph.claim(layer, L0.InstanceOf, null, DIA.Layer);
  43
  44         // Assign tagging relations
  45         Resource visibleTag = newTag(graph, L0, DIA.IsVisible);
  46         Resource focusableTag = newTag(graph, L0, DIA.IsFocusable);
  47         graph.claim(layer, DIA.HasVisibleTag, visibleTag);
  48         graph.claim(layer, DIA.HasFocusableTag, focusableTag);
  49
  50         // Assign shared name property for all, the layer and the tags
  51         Resource name = graph.newResource();
  52         graph.claim(name, L0.InstanceOf, null, L0.String);
  53         graph.claimValue(name, layerName);
  54
  55         graph.claim(layer, L0.HasName, name);
  56         graph.claim(visibleTag, L0.HasName, name);
  57         graph.claim(focusableTag, L0.HasName, name);
  58
  59         setLayerActive(graph, DIA, layer, active);
  60
  61         Map<String, Resource> properties = new HashMap<>();
  62         properties.put(GraphLayer.PROP_FOCUSABLE, focusableTag);
  63         properties.put(GraphLayer.PROP_VISIBLE, visibleTag);
  64
  65         return new GraphLayer(layerName, layer, properties);
  66     }
  67
  68     public static Resource newTag(WriteGraph graph, Layer0 L0, Resource baseTag) throws DatabaseException {
  69         Resource tag = graph.newResource();
  70         graph.claim(tag, L0.SubrelationOf, baseTag);
  71         graph.claim(tag, L0.InverseOf, tag);
  72         return tag;
  73     }
  74
  75     public static void setLayerActive(WriteGraph graph, DiagramResource DIA, Resource layer, boolean active) throws ManyObjectsForFunctionalRelationException, ServiceException {
  76         graph.claimLiteral(layer, DIA.IsActive, Boolean.valueOf(active));
  77     }
  78
  79     @Override
  80     public GraphLayer loadLayer(ReadGraph graph, Resource layer) throws DatabaseException {
  81         Layer0 L0 = Layer0.getInstance(graph);
  82         DiagramResource DIA = DiagramResource.getInstance(graph);
  83         String name = graph.getRelatedValue(layer, L0.HasName);
  84         Resource visible = graph.getSingleObject(layer, DIA.HasVisibleTag);
  85         Resource focusable = graph.getSingleObject(layer, DIA.HasFocusableTag);
  86
  87         Map<String, Resource> properties = new HashMap<>();
  88         properties.put(GraphLayer.PROP_FOCUSABLE, focusable);
  89         properties.put(GraphLayer.PROP_VISIBLE, visible);
  90
  91         return new GraphLayer(name, layer, properties);
  92     }
  93
  94 }