bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/impl/DefaultCopyHandler.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.db.layer0.adapter.impl;
  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.Map;
  19
  20 import org.eclipse.core.runtime.IProgressMonitor;
  21 import org.eclipse.core.runtime.SubMonitor;
  22 import org.simantics.db.ReadGraph;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.common.request.ResourceRead;
  25 import org.simantics.db.common.utils.Logger;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.layer0.adapter.CopyHandler;
  28 import org.simantics.db.layer0.adapter.CopyHandler2;
  29 import org.simantics.db.layer0.util.ClipboardUtils;
  30 import org.simantics.db.layer0.util.ModelTransferableGraphSourceRequest;
  31 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
  32 import org.simantics.db.layer0.util.SimanticsClipboardBuilder;
  33 import org.simantics.db.layer0.util.TGRepresentation;
  34 import org.simantics.db.layer0.util.TGRepresentationUtils;
  35 import org.simantics.db.layer0.util.TGSourceRepresentation;
  36 import org.simantics.db.layer0.util.TransferableGraphConfiguration2;
  37 import org.simantics.graph.db.TransferableGraphSource;
  38 import org.simantics.graph.db.TransferableGraphs;
  39 import org.simantics.graph.representation.TransferableGraph1;
  40 import org.simantics.operation.Layer0X;
  41 import org.slf4j.LoggerFactory;
  42
  43 public class DefaultCopyHandler implements CopyHandler, CopyHandler2 {
  44
  45     private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(DefaultCopyHandler.class);
  46
  47     protected Collection<Resource> resources;
  48
  49     public DefaultCopyHandler(Resource resource) {
  50         this.resources = Collections.singletonList(resource);
  51     }
  52
  53     public DefaultCopyHandler(Collection<Resource> resources) {
  54         this.resources = resources;
  55     }
  56
  57     public Resource getResource() {
  58         if(resources.size() != 1) throw new IllegalStateException();
  59         return resources.iterator().next();
  60     }
  61
  62     protected CopyHandler2 create(Collection<Resource> resources) {
  63         return new DefaultCopyHandler(resources);
  64     }
  65
  66     protected boolean ignoreVirtualResources() {
  67         return true;
  68     }
  69
  70     @Override
  71     public CopyHandler2 combine(CopyHandler2 other_) {
  72         if(other_ instanceof DefaultCopyHandler) {
  73             DefaultCopyHandler other = (DefaultCopyHandler)other_;
  74             ArrayList<Resource> allResources = new ArrayList<Resource>();
  75             allResources.addAll(resources);
  76             allResources.addAll(other.resources);
  77             return create(allResources);
  78         }
  79         return null;
  80     }
  81
  82     protected TransferableGraphConfiguration2 createConfiguration(ReadGraph graph, boolean cut) throws DatabaseException {
  83                 if(cut) return null;
  84         return new TransferableGraphConfiguration2(graph, resources, ignoreVirtualResources(), false);
  85     }
  86
  87     protected TransferableGraphSource computeSource(ReadGraph graph, TransferableGraphConfiguration2 conf) throws DatabaseException {
  88         return graph.syncRequest(new ModelTransferableGraphSourceRequest(conf));
  89     }
  90
  91     protected TransferableGraph1 compute(ReadGraph graph, TransferableGraphConfiguration2 conf) throws DatabaseException {
  92         return TransferableGraphs.create(graph, computeSource(graph, conf));
  93     }
  94
  95     protected Representation createTransferableGraph(ReadGraph graph, Collection<Resource> resources, boolean cut) throws DatabaseException {
  96         final TransferableGraphConfiguration2 conf = createConfiguration(graph, cut);
  97         if(conf == null) return null;
  98         return new TGRepresentation(resources.toArray(new Resource[resources.size()])) {
  99             @Override
 100             public TransferableGraph1 compute(ReadGraph graph, Map<String,Object> hints) throws DatabaseException {
 101                 conf.exclusionFunction = TGRepresentationUtils.computeExclusionFunction(graph, resources, hints);
 102                 return DefaultCopyHandler.this.compute(graph, conf);
 103             }
 104         };
 105     }
 106
 107     protected Representation createTransferableGraphSource(ReadGraph graph, Collection<Resource> resources, boolean cut) throws DatabaseException {
 108         final TransferableGraphConfiguration2 conf = createConfiguration(graph, cut);
 109         if(conf == null) return null;
 110         return new TGSourceRepresentation(resources.toArray(new Resource[resources.size()])) {
 111             @Override
 112             public TransferableGraphSource compute(ReadGraph graph, Map<String,Object> hints) throws DatabaseException {
 113                 conf.exclusionFunction = TGRepresentationUtils.computeExclusionFunction(graph, resources, hints);
 114                 return DefaultCopyHandler.this.computeSource(graph, conf);
 115             }
 116         };
 117     }
 118
 119     protected void fillTG(ReadGraph graph, HashSet<Representation> items, boolean cut, IProgressMonitor monitor) {
 120         SubMonitor subMonitor = SubMonitor.convert(monitor, 10);
 121         subMonitor.subTask("Fill tg");
 122         try {
 123
 124             Representation tgRepresentation = createTransferableGraph(graph, resources, cut);
 125             if (tgRepresentation != null)
 126                 items.add(tgRepresentation);
 127             subMonitor.worked(2);
 128             Representation tgSourceRepresentation = createTransferableGraphSource(graph, resources, cut);
 129             if (tgSourceRepresentation != null)
 130                 items.add(tgSourceRepresentation);
 131             subMonitor.worked(2);
 132
 133             if (resources.size() == 1) {
 134                 SubMonitor splittedChild = subMonitor.split(6);
 135                 Collection<Representation> representations = graph
 136                         .syncRequest(new ResourceRead<Collection<Representation>>(resources.iterator().next()) {
 137                             @Override
 138                             public Collection<Representation> perform(ReadGraph graph) throws DatabaseException {
 139                                 ArrayList<Representation> result = new ArrayList<Representation>();
 140                                 Layer0X L0X = Layer0X.getInstance(graph);
 141                                 for (Resource adapter : graph.getObjects(resource, L0X.HasRepresentation)) {
 142                                     result.add(graph.adapt(adapter, Representation.class));
 143                                     splittedChild.worked(1);
 144                                 }
 145                                 return result;
 146                             }
 147                         });
 148                 for (Representation r : representations)
 149                     items.add(r);
 150             } else {
 151                 LOGGER.warn("Invalid amount of resources {} for filling tg", resources);
 152             }
 153
 154         } catch (DatabaseException e) {
 155             Logger.defaultLogError(e);
 156         }
 157
 158     }
 159
 160     protected void fillCopyResource(ReadGraph graph, HashSet<Representation> items, IProgressMonitor monitor) {
 161         SubMonitor subMonitor = SubMonitor.convert(monitor, 1);
 162         subMonitor.subTask("Fill copy resources");
 163         items.add(ClipboardUtils.createCopyResources(resources));
 164         subMonitor.worked(1);
 165     }
 166
 167     protected void fillCutResource(ReadGraph graph, HashSet<Representation> items, IProgressMonitor monitor) {
 168         SubMonitor subMonitor = SubMonitor.convert(monitor, 1);
 169         subMonitor.subTask("Fill cut resources");
 170         items.add(ClipboardUtils.createCutResources(resources));
 171         subMonitor.worked(1);
 172     }
 173
 174     @Override
 175     public void copyToClipboard(ReadGraph graph, SimanticsClipboardBuilder clipboard, IProgressMonitor monitor) throws DatabaseException {
 176         SubMonitor subMonitor = SubMonitor.convert(monitor, 100);
 177         HashSet<Representation> items = new HashSet<Representation>();
 178         fillTG(graph, items, false, subMonitor.split(80));
 179         fillCopyResource(graph, items, subMonitor.split(10));
 180         clipboard.addContent(items, subMonitor.split(10));
 181     }
 182
 183     @Override
 184     public void cutToClipboard(ReadGraph graph, SimanticsClipboardBuilder clipboard, IProgressMonitor monitor) throws DatabaseException {
 185         SubMonitor subMonitor = SubMonitor.convert(monitor, 100);
 186         HashSet<Representation> items = new HashSet<Representation>();
 187         fillTG(graph, items, true, subMonitor.split(80));
 188         fillCutResource(graph, items, subMonitor.split(10));
 189         clipboard.addContent(items, subMonitor.split(10));
 190     }
 191
 192 }