bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/RemoveBranchpoint.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.diagram.synchronization.graph;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.Iterator;\r
  16 \r
  17 import org.simantics.db.Resource;\r
  18 import org.simantics.db.WriteGraph;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 import org.simantics.diagram.content.ConnectionUtil;\r
  21 import org.simantics.diagram.stubs.DiagramResource;\r
  22 import org.simantics.diagram.synchronization.ModificationAdapter;\r
  23 import org.simantics.g2d.element.ElementHints;\r
  24 import org.simantics.g2d.element.IElement;\r
  25 \r
  26 /**\r
  27  * @author Tuukka Lehtonen\r
  28  */\r
  29 public class RemoveBranchpoint extends ModificationAdapter {\r
  30 \r
  31     Resource element;\r
  32 \r
  33     public RemoveBranchpoint(IElement element) {\r
  34         super(REMOVE_BRANCH_PRIORITY);\r
  35         this.element = element.getHint(ElementHints.KEY_OBJECT);\r
  36         assert element != null;\r
  37     }\r
  38 \r
  39     @Override\r
  40     public void perform(WriteGraph g) throws DatabaseException {\r
  41         DiagramResource dr = DiagramResource.getInstance(g);\r
  42         Collection<Resource> connectors = g.getObjects(element, dr.AreConnected);\r
  43 \r
  44         ConnectionUtil cu = new ConnectionUtil(g);\r
  45         cu.removeConnectionPart(element);\r
  46 \r
  47         // If this *was* a route point, reconnect the connectors previously\r
  48         // connected to the route point. Otherwise just leave it.\r
  49         if (connectors.size() == 2) {\r
  50             Iterator<Resource> it = connectors.iterator();\r
  51             Resource c1 = it.next();\r
  52             Resource c2 = it.next();\r
  53             cu.connect(c1, c2);\r
  54         }\r
  55     }\r
  56 \r
  57 }\r