bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartPasteHandler.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.charts.ui;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.Collections;\r
  17 import java.util.List;\r
  18 import java.util.Set;\r
  19 \r
  20 import org.simantics.charts.query.AddChartItem;\r
  21 import org.simantics.charts.query.ChartItemDescriptor;\r
  22 import org.simantics.databoard.util.ObjectUtils;\r
  23 import org.simantics.db.Resource;\r
  24 import org.simantics.db.WriteGraph;\r
  25 import org.simantics.db.common.request.WriteResultRequest;\r
  26 import org.simantics.db.exception.DatabaseException;\r
  27 import org.simantics.db.layer0.adapter.PasteHandlerAdapter;\r
  28 import org.simantics.db.layer0.request.PossibleModel;\r
  29 import org.simantics.db.layer0.util.ClipboardUtils;\r
  30 import org.simantics.db.layer0.util.PasteEventHandler;\r
  31 import org.simantics.db.layer0.util.SimanticsClipboard;\r
  32 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;\r
  33 import org.simantics.db.layer0.util.SimanticsKeys;\r
  34 import org.simantics.modeling.ModelingResources;\r
  35 \r
  36 /**\r
  37  * Paste handler of Paste Resource\r
  38  * \r
  39  * @author Tuukka Lehtonen\r
  40  */\r
  41 public class ChartPasteHandler extends PasteHandlerAdapter {\r
  42 \r
  43     private Resource chart;\r
  44 \r
  45     public ChartPasteHandler(Resource chart) {\r
  46         this.chart = chart;\r
  47     }\r
  48 \r
  49     @Override\r
  50     public Collection<Resource> pasteFromClipboard(WriteGraph graph, SimanticsClipboard clipboard, PasteEventHandler handler) throws DatabaseException {\r
  51         final List<Resource> resources = new ArrayList<Resource>();\r
  52         for (Set<Representation> object : clipboard.getContents()) {\r
  53             Collection<Resource> rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_COPY_RESOURCES);\r
  54             if (rs != null)\r
  55                 resources.addAll(rs);\r
  56         }\r
  57 \r
  58         if (resources.isEmpty())\r
  59             return Collections.emptyList();\r
  60 \r
  61         return graph.syncRequest(new WriteResultRequest<Collection<Resource>>() {\r
  62             @Override\r
  63             public Collection<Resource> perform(WriteGraph graph) throws DatabaseException {\r
  64                 ModelingResources MOD = ModelingResources.getInstance(graph);\r
  65                 Resource expectedModel = graph.syncRequest( new PossibleModel(chart) );\r
  66                 List<ChartItemDescriptor> refs = new ArrayList<ChartItemDescriptor>();\r
  67                 for (Resource r : resources) {\r
  68                     if (graph.isInstanceOf(r, MOD.Subscription_Item)) {\r
  69                         Resource model = graph.syncRequest(new PossibleModel(r));\r
  70                         if (ObjectUtils.objectEquals(expectedModel, model))\r
  71                             refs.add( AddChartItem.createDescriptor(graph, r) );\r
  72                     }\r
  73                 }\r
  74                 if (!refs.isEmpty())\r
  75                     return AddChartItem.addAndMoveChartItems(chart, refs, Collections.<Resource>emptySet()).perform(graph);\r
  76                 else\r
  77                         return Collections.emptyList();\r
  78             }\r
  79         });\r
  80     }\r
  81 \r
  82     @SuppressWarnings("rawtypes")\r
  83     @Override\r
  84     public Object getAdapter(Class adapter) {\r
  85         if (Resource.class == adapter)\r
  86             return chart;\r
  87         return null;\r
  88     }\r
  89 \r
  90 }\r