bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/BranchPointClassFactory.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.adapter;\r
  13 \r
  14 \r
  15 import org.simantics.db.AsyncReadGraph;\r
  16 import org.simantics.db.Resource;\r
  17 import org.simantics.db.common.procedure.adapter.AsyncProcedureAdapter;\r
  18 import org.simantics.db.common.procedure.guarded.GuardedAsyncProcedureWrapper;\r
  19 import org.simantics.db.procedure.AsyncProcedure;\r
  20 import org.simantics.diagram.stubs.DiagramResource;\r
  21 import org.simantics.diagram.synchronization.SynchronizationHints;\r
  22 import org.simantics.diagram.synchronization.graph.TransformSynchronizer;\r
  23 import org.simantics.g2d.canvas.ICanvasContext;\r
  24 import org.simantics.g2d.diagram.IDiagram;\r
  25 import org.simantics.g2d.element.ElementClass;\r
  26 import org.simantics.g2d.element.IElement;\r
  27 import org.simantics.g2d.element.handler.impl.StaticObjectAdapter;\r
  28 import org.simantics.g2d.elementclass.BranchPoint;\r
  29 import org.simantics.g2d.elementclass.BranchPoint.Direction;\r
  30 import org.simantics.g2d.elementclass.BranchPointClass;\r
  31 \r
  32 /**\r
  33  * @author Tuukka Lehtonen\r
  34  */\r
  35 public class BranchPointClassFactory extends ElementFactoryAdapter {\r
  36 \r
  37     public static ElementClass create(Resource elementClass) {\r
  38         return BranchPointClass.CLASS.newClassWith(false, new StaticObjectAdapter(elementClass));\r
  39     }\r
  40 \r
  41     @Override\r
  42     public void create(AsyncReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource elementType, AsyncProcedure<ElementClass> procedure) {\r
  43         procedure.execute(graph, BranchPointClass.CLASS.newClassWith(false, new StaticObjectAdapter(elementType)));\r
  44     }\r
  45 \r
  46     @Override\r
  47     public void load(AsyncReadGraph graph, ICanvasContext canvas, IDiagram diagram, final Resource element, final IElement e, final AsyncProcedure<IElement> procedure) {\r
  48         e.setHint(SynchronizationHints.HINT_SYNCHRONIZER, TransformSynchronizer.INSTANCE);\r
  49 \r
  50         final AsyncProcedure<IElement> guard = new GuardedAsyncProcedureWrapper<IElement>(procedure, 2);\r
  51 \r
  52         final BranchPoint bp = e.getElementClass().getAtMostOneItemOfClass(BranchPoint.class);\r
  53         if (bp != null) {\r
  54             final DiagramResource dr = graph.getService(DiagramResource.class);\r
  55             graph.forHasStatement(element, dr.Horizontal, element, new AsyncProcedureAdapter<Boolean>() {\r
  56                 @Override\r
  57                 public void exception(AsyncReadGraph graph, Throwable throwable) {\r
  58                     guard.exception(graph, throwable);\r
  59                 }\r
  60                 @Override\r
  61                 public void execute(AsyncReadGraph graph, final Boolean horizontal) {\r
  62                     graph.forHasStatement(element, dr.Vertical, element, new AsyncProcedure<Boolean>() {\r
  63                         @Override\r
  64                         public void exception(AsyncReadGraph graph, Throwable throwable) {\r
  65                             guard.exception(graph, throwable);\r
  66                         }\r
  67                         @Override\r
  68                         public void execute(AsyncReadGraph graph, Boolean vertical) {\r
  69                             Direction direction = Direction.Any;\r
  70                             if (horizontal ^ vertical)\r
  71                                 direction = horizontal ? Direction.Horizontal : Direction.Vertical;\r
  72                             bp.setDirectionPreference(e, direction);\r
  73 \r
  74                             guard.execute(graph, e);\r
  75                         }\r
  76                     });\r
  77                 }\r
  78             });\r
  79         }\r
  80 \r
  81         ElementFactoryUtil.readTransform(graph, element, e, guard);\r
  82     }\r
  83 \r
  84 }