bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartGroupPasteHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.ui;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.HashSet;
  18 import java.util.List;
  19 import java.util.Set;
  20
  21 import org.simantics.charts.ontology.ChartResource;
  22 import org.simantics.databoard.util.ObjectUtils;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.WriteGraph;
  25 import org.simantics.db.common.request.WriteResultRequest;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.layer0.adapter.PasteHandlerAdapter;
  28 import org.simantics.db.layer0.request.PossibleModel;
  29 import org.simantics.db.layer0.util.ClipboardUtils;
  30 import org.simantics.db.layer0.util.PasteEventHandler;
  31 import org.simantics.db.layer0.util.SimanticsClipboard;
  32 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
  33 import org.simantics.db.layer0.util.SimanticsKeys;
  34 import org.simantics.utils.ui.dialogs.ShowError;
  35
  36 /**
  37  * @author Tuukka Lehtonen
  38  */
  39 public class ChartGroupPasteHandler extends PasteHandlerAdapter {
  40
  41     private Resource chartGroup;
  42
  43     public ChartGroupPasteHandler(Resource chartGroup) {
  44         this.chartGroup = chartGroup;
  45     }
  46
  47     @Override
  48     public Collection<Resource> pasteFromClipboard(WriteGraph graph, SimanticsClipboard clipboard, PasteEventHandler handler) throws DatabaseException {
  49         final List<Set<Representation>> copied = new ArrayList<>();
  50         final List<Resource> cut = new ArrayList<>();
  51         for (Set<Representation> object : clipboard.getContents()) {
  52             Collection<Resource> rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_COPY_RESOURCES);
  53             if (rs != null) {
  54                 copied.add(object);
  55             } else {
  56                 rs = ClipboardUtils.accept(object, SimanticsKeys.KEY_CUT_RESOURCES);
  57                 if (rs != null)
  58                     cut.addAll(rs);
  59             }
  60         }
  61
  62         if (copied.isEmpty() && cut.isEmpty())
  63             return Collections.emptyList();
  64
  65         return graph.syncRequest(new WriteResultRequest<Collection<Resource>>() {
  66             @Override
  67             public Collection<Resource> perform(WriteGraph graph) throws DatabaseException {
  68
  69                 ChartResource CHART = ChartResource.getInstance(graph);
  70
  71                 Resource expectedModel = graph.syncRequest( new PossibleModel(chartGroup) );
  72                 if (!copied.isEmpty()) {
  73                     Set<Set<Representation>> sources = new HashSet<>();
  74                     for (Set<Representation> r : copied) {
  75                         Collection<Resource> srcs = ClipboardUtils.accept(r, SimanticsKeys.KEY_COPY_RESOURCES);
  76                         for(Resource src : srcs) {
  77                             if (graph.isInstanceOf(src, CHART.Chart)) {
  78                                 Resource model = graph.syncRequest(new PossibleModel(src));
  79                                 if (ObjectUtils.objectEquals(expectedModel, model)) {
  80                                     sources.add(r);
  81                                 }
  82                             }
  83                         }
  84                     }
  85                     return ChartGroupDropActionFactory.copyChartsRequest(chartGroup, sources).perform(graph);
  86                 } else if (!cut.isEmpty()) {
  87                     Set<Resource> sources = new HashSet<>();
  88                     for (Resource r : cut) {
  89                         if (graph.isInstanceOf(r, CHART.Chart)) {
  90                             Resource model = graph.syncRequest(new PossibleModel(r));
  91                             if (ObjectUtils.objectEquals(expectedModel, model))
  92                                 sources.add(r);
  93                         }
  94                     }
  95                     String error = ChartGroupDropActionFactory.validateDrop(graph, chartGroup, sources);
  96                     if (error != null) {
  97                         ShowError.showError("Cut Failed", error, (Throwable) null);
  98                         return Collections.emptyList();
  99                     }
 100                     return ChartGroupDropActionFactory.moveChartsRequest(chartGroup, sources).perform(graph);
 101                 }
 102
 103                 return Collections.emptyList();
 104
 105             }
 106         });
 107     }
 108
 109     @SuppressWarnings("rawtypes")
 110     @Override
 111     public Object getAdapter(Class adapter) {
 112         if (Resource.class == adapter)
 113             return chartGroup;
 114         return null;
 115     }
 116
 117 }