bundles/org.simantics.charts/src/org/simantics/charts/editor/ChartPasteHandler2.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management in\r
   3  * 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.editor;\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.eclipse.core.runtime.IStatus;\r
  21 import org.eclipse.core.runtime.Status;\r
  22 import org.simantics.Simantics;\r
  23 import org.simantics.charts.Activator;\r
  24 import org.simantics.charts.query.AddChartItem;\r
  25 import org.simantics.charts.query.ChartItemDescriptor;\r
  26 import org.simantics.databoard.util.ObjectUtils;\r
  27 import org.simantics.db.Resource;\r
  28 import org.simantics.db.WriteGraph;\r
  29 import org.simantics.db.common.request.WriteRequest;\r
  30 import org.simantics.db.exception.DatabaseException;\r
  31 import org.simantics.db.layer0.request.PossibleModel;\r
  32 import org.simantics.db.layer0.util.ClipboardUtils;\r
  33 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;\r
  34 import org.simantics.db.layer0.util.SimanticsKeys;\r
  35 import org.simantics.g2d.canvas.ICanvasParticipant;\r
  36 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
  37 import org.simantics.modeling.ModelingResources;\r
  38 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
  39 import org.simantics.scenegraph.g2d.events.command.CommandEvent;\r
  40 import org.simantics.scenegraph.g2d.events.command.Commands;\r
  41 \r
  42 /**\r
  43  * Handles paste to TimeSeriesEditor\r
  44  * \r
  45  * @author toni.kalajainen\r
  46  */\r
  47 public class ChartPasteHandler2 extends AbstractCanvasParticipant implements ICanvasParticipant {\r
  48 \r
  49     private Resource chart;\r
  50 \r
  51     public ChartPasteHandler2(Resource chart) {\r
  52         this.chart = chart;\r
  53     }\r
  54 \r
  55     @EventHandler(priority = 0)\r
  56     public boolean handleCommandEvent(CommandEvent e) {\r
  57 \r
  58         if (e.command == Commands.PASTE) {\r
  59 \r
  60             final List<Resource> resources = new ArrayList<Resource>();\r
  61             for (Set<Representation> object : Simantics.getClipboard().getContents()) {\r
  62                 Collection<Resource> rs;\r
  63                 try {\r
  64                     rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_COPY_RESOURCES);\r
  65                     if (rs != null)\r
  66                         resources.addAll(rs);\r
  67                 } catch (DatabaseException ex) {\r
  68                     Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID,\r
  69                             "Failed to retrieve clipboard contents.", ex));\r
  70                 }\r
  71             }\r
  72 \r
  73             if (resources.isEmpty())\r
  74                 return true;\r
  75 \r
  76             Simantics.getSession().asyncRequest(new WriteRequest() {\r
  77                 @Override\r
  78                 public void perform(WriteGraph graph) throws DatabaseException {\r
  79                     Resource expectedModel = graph.syncRequest(new PossibleModel(chart));\r
  80                     if (expectedModel == null || chart == null)\r
  81                         return;\r
  82                     ModelingResources MOD = ModelingResources.getInstance(graph);\r
  83                     List<ChartItemDescriptor> refs = new ArrayList<ChartItemDescriptor>();\r
  84                     for (Resource r : resources) {\r
  85                         if (graph.isInstanceOf(r, MOD.Subscription_Item)) {\r
  86                             Resource model = graph.syncRequest(new PossibleModel(r));\r
  87                             if (ObjectUtils.objectEquals(expectedModel, model))\r
  88                                 refs.add(AddChartItem.createDescriptor(graph, r));\r
  89                         }\r
  90                     }\r
  91 \r
  92                     if (!refs.isEmpty()) {\r
  93                         AddChartItem.addAndMoveChartItems(chart, refs, Collections.<Resource> emptySet())\r
  94                                 .perform(graph);\r
  95                     }\r
  96                 }\r
  97             });\r
  98             return true;\r
  99         }\r
 100 \r
 101         return false;\r
 102 \r
 103     }\r
 104 \r
 105 }\r