--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.diagram.synchronization.graph.layer;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.exception.ManyObjectsForFunctionalRelationException;\r
+import org.simantics.db.exception.ServiceException;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.layer0.Layer0;\r
+\r
+/**\r
+ * Utilities for manipulating diagram layers in the graph.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public final class GraphLayerUtil {\r
+\r
+ WriteGraph graph;\r
+ Layer0 l0;\r
+ DiagramResource dia;\r
+\r
+ public GraphLayerUtil(WriteGraph graph) {\r
+ this.graph = graph;\r
+ this.l0 = Layer0.getInstance(graph);\r
+ this.dia = DiagramResource.getInstance(graph);\r
+ }\r
+\r
+ public GraphLayer createLayer(String layerName, boolean active) throws DatabaseException {\r
+ Resource layer = graph.newResource();\r
+ graph.claim(layer, l0.InstanceOf, null, dia.Layer);\r
+\r
+ // Assign tagging relations\r
+ Resource visibleTag = newTag(dia.IsVisible);\r
+ Resource focusableTag = newTag(dia.IsFocusable);\r
+ graph.claim(layer, dia.HasVisibleTag, visibleTag);\r
+ graph.claim(layer, dia.HasFocusableTag, focusableTag);\r
+\r
+ // Assign shared name property for all, the layer and the tags\r
+ Resource name = graph.newResource();\r
+ graph.claim(name, l0.InstanceOf, null, l0.String);\r
+ graph.claimValue(name, layerName);\r
+\r
+ graph.claim(layer, l0.HasName, name);\r
+ graph.claim(visibleTag, l0.HasName, name);\r
+ graph.claim(focusableTag, l0.HasName, name);\r
+\r
+ setLayerActive(layer, active);\r
+\r
+ return new GraphLayer(layerName, layer, visibleTag, focusableTag);\r
+ }\r
+\r
+ public Resource newTag(Resource baseTag) throws DatabaseException {\r
+ Resource tag = graph.newResource();\r
+ graph.claim(tag, l0.SubrelationOf, baseTag);\r
+ graph.claim(tag, l0.InverseOf, tag);\r
+ return tag;\r
+ }\r
+\r
+ public void setLayerActive(Resource layer, boolean active) throws ManyObjectsForFunctionalRelationException, ServiceException {\r
+ graph.claimLiteral(layer, dia.IsActive, Boolean.valueOf(active));\r
+ }\r
+\r
+}\r