bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartGroupPasteHandler.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.HashSet;\r
  18 import java.util.List;\r
  19 import java.util.Set;\r
  20 \r
  21 import org.simantics.charts.ontology.ChartResource;\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.utils.ui.dialogs.ShowError;\r
  35 \r
  36 /**\r
  37  * @author Tuukka Lehtonen\r
  38  */\r
  39 public class ChartGroupPasteHandler extends PasteHandlerAdapter {\r
  40 \r
  41     private Resource chartGroup;\r
  42 \r
  43     public ChartGroupPasteHandler(Resource chartGroup) {\r
  44         this.chartGroup = chartGroup;\r
  45     }\r
  46 \r
  47     @Override\r
  48     public Collection<Resource> pasteFromClipboard(WriteGraph graph, SimanticsClipboard clipboard, PasteEventHandler handler) throws DatabaseException {\r
  49         final List<Set<Representation>> copied = new ArrayList<>();\r
  50         final List<Resource> cut = new ArrayList<>();\r
  51         for (Set<Representation> object : clipboard.getContents()) {\r
  52             Collection<Resource> rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_COPY_RESOURCES);\r
  53             if (rs != null) {\r
  54                 copied.add(object);\r
  55             } else {\r
  56                 rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_CUT_RESOURCES);\r
  57                 if (rs != null)\r
  58                     cut.addAll(rs);\r
  59             }\r
  60         }\r
  61 \r
  62         if (copied.isEmpty() && cut.isEmpty())\r
  63             return Collections.emptyList();\r
  64 \r
  65         return graph.syncRequest(new WriteResultRequest<Collection<Resource>>() {\r
  66             @Override\r
  67             public Collection<Resource> perform(WriteGraph graph) throws DatabaseException {\r
  68 \r
  69                 ChartResource CHART = ChartResource.getInstance(graph);\r
  70 \r
  71                 Resource expectedModel = graph.syncRequest( new PossibleModel(chartGroup) );\r
  72                 if (!copied.isEmpty()) {\r
  73                     Set<Set<Representation>> sources = new HashSet<>();\r
  74                     for (Set<Representation> r : copied) {\r
  75                         Collection<Resource> srcs = ClipboardUtils.accept(r, SimanticsKeys.KEY_COPY_RESOURCES);\r
  76                         for(Resource src : srcs) {\r
  77                             if (graph.isInstanceOf(src, CHART.Chart)) {\r
  78                                 Resource model = graph.syncRequest(new PossibleModel(src));\r
  79                                 if (ObjectUtils.objectEquals(expectedModel, model)) {\r
  80                                     sources.add(r);\r
  81                                 }\r
  82                             }\r
  83                         }\r
  84                     }\r
  85                     return ChartGroupDropActionFactory.copyChartsRequest(chartGroup, sources).perform(graph);\r
  86                 } else if (!cut.isEmpty()) {\r
  87                     Set<Resource> sources = new HashSet<>();\r
  88                     for (Resource r : cut) {\r
  89                         if (graph.isInstanceOf(r, CHART.Chart)) {\r
  90                             Resource model = graph.syncRequest(new PossibleModel(r));\r
  91                             if (ObjectUtils.objectEquals(expectedModel, model))\r
  92                                 sources.add(r);\r
  93                         }\r
  94                     }\r
  95                     String error = ChartGroupDropActionFactory.validateDrop(graph, chartGroup, sources);\r
  96                     if (error != null) {\r
  97                         ShowError.showError("Cut Failed", error, (Throwable) null);\r
  98                         return Collections.emptyList();\r
  99                     }\r
 100                     return ChartGroupDropActionFactory.moveChartsRequest(chartGroup, sources).perform(graph);\r
 101                 }\r
 102                 \r
 103                 return Collections.emptyList();\r
 104                 \r
 105             }\r
 106         });\r
 107     }\r
 108 \r
 109     @SuppressWarnings("rawtypes")\r
 110     @Override\r
 111     public Object getAdapter(Class adapter) {\r
 112         if (Resource.class == adapter)\r
 113             return chartGroup;\r
 114         return null;\r
 115     }\r
 116 \r
 117 }\r