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

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.charts.editor;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.Set;
  19
  20 import org.eclipse.core.runtime.IStatus;
  21 import org.eclipse.core.runtime.Status;
  22 import org.simantics.Simantics;
  23 import org.simantics.charts.Activator;
  24 import org.simantics.charts.query.AddChartItem;
  25 import org.simantics.charts.query.ChartItemDescriptor;
  26 import org.simantics.databoard.util.ObjectUtils;
  27 import org.simantics.db.Resource;
  28 import org.simantics.db.WriteGraph;
  29 import org.simantics.db.common.request.WriteRequest;
  30 import org.simantics.db.exception.DatabaseException;
  31 import org.simantics.db.layer0.request.PossibleModel;
  32 import org.simantics.db.layer0.util.ClipboardUtils;
  33 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
  34 import org.simantics.db.layer0.util.SimanticsKeys;
  35 import org.simantics.g2d.canvas.ICanvasParticipant;
  36 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
  37 import org.simantics.modeling.ModelingResources;
  38 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
  39 import org.simantics.scenegraph.g2d.events.command.CommandEvent;
  40 import org.simantics.scenegraph.g2d.events.command.Commands;
  41
  42 /**
  43  * Handles paste to TimeSeriesEditor
  44  *
  45  * @author toni.kalajainen
  46  */
  47 public class ChartPasteHandler2 extends AbstractCanvasParticipant implements ICanvasParticipant {
  48
  49     private Resource chart;
  50
  51     public ChartPasteHandler2(Resource chart) {
  52         this.chart = chart;
  53     }
  54
  55     @EventHandler(priority = 0)
  56     public boolean handleCommandEvent(CommandEvent e) {
  57
  58         if (e.command == Commands.PASTE) {
  59
  60             final List<Resource> resources = new ArrayList<Resource>();
  61             for (Set<Representation> object : Simantics.getClipboard().getContents()) {
  62                 Collection<Resource> rs;
  63                 try {
  64                     rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_COPY_RESOURCES);
  65                     if (rs != null)
  66                         resources.addAll(rs);
  67                 } catch (DatabaseException ex) {
  68                     Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID,
  69                             "Failed to retrieve clipboard contents.", ex));
  70                 }
  71             }
  72
  73             if (resources.isEmpty())
  74                 return true;
  75
  76             Simantics.getSession().asyncRequest(new WriteRequest() {
  77                 @Override
  78                 public void perform(WriteGraph graph) throws DatabaseException {
  79                     Resource expectedModel = graph.syncRequest(new PossibleModel(chart));
  80                     if (expectedModel == null || chart == null)
  81                         return;
  82                     ModelingResources MOD = ModelingResources.getInstance(graph);
  83                     List<ChartItemDescriptor> refs = new ArrayList<ChartItemDescriptor>();
  84                     for (Resource r : resources) {
  85                         if (graph.isInstanceOf(r, MOD.Subscription_Item)) {
  86                             Resource model = graph.syncRequest(new PossibleModel(r));
  87                             if (ObjectUtils.objectEquals(expectedModel, model))
  88                                 refs.add(AddChartItem.createDescriptor(graph, r));
  89                         }
  90                     }
  91
  92                     if (!refs.isEmpty()) {
  93                         AddChartItem.addAndMoveChartItems(chart, refs, Collections.<Resource> emptySet())
  94                                 .perform(graph);
  95                     }
  96                 }
  97             });
  98             return true;
  99         }
 100
 101         return false;
 102
 103     }
 104
 105 }