bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/ClipboardUtils.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.db.layer0.util;\r
  13 \r
  14 import java.io.File;\r
  15 import java.io.IOException;\r
  16 import java.util.ArrayList;\r
  17 import java.util.Collection;\r
  18 import java.util.Collections;\r
  19 import java.util.Map;\r
  20 import java.util.Set;\r
  21 \r
  22 import org.simantics.databoard.adapter.AdaptException;\r
  23 import org.simantics.databoard.container.DataContainer;\r
  24 import org.simantics.databoard.container.DataContainers;\r
  25 import org.simantics.db.ReadGraph;\r
  26 import org.simantics.db.RequestProcessor;\r
  27 import org.simantics.db.Resource;\r
  28 import org.simantics.db.common.request.ResourceRead;\r
  29 import org.simantics.db.common.utils.Logger;\r
  30 import org.simantics.db.exception.DatabaseException;\r
  31 import org.simantics.db.layer0.adapter.PasteHandler;\r
  32 import org.simantics.db.layer0.internal.SimanticsInternal;\r
  33 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;\r
  34 import org.simantics.db.layer0.variable.Variable;\r
  35 import org.simantics.db.request.Read;\r
  36 import org.simantics.graph.representation.TransferableGraph1;\r
  37 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  38 \r
  39 public class ClipboardUtils {\r
  40         \r
  41         public static String HINT_TARGET_RESOURCE = "HINT_TARGET_RESOURCE";\r
  42 \r
  43         public static <T> T accept(Set<Representation> set, Key key) throws DatabaseException {\r
  44                 return accept(set, key, Collections.emptyMap());\r
  45         }\r
  46 \r
  47         public static <T> T accept(Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {\r
  48                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(SimanticsInternal.getSession(), hints);\r
  49                 return null;\r
  50         }\r
  51         \r
  52         public static <T> T accept(RequestProcessor processor, Set<Representation> set, Key key) throws DatabaseException {\r
  53                 return accept(processor, set, key, Collections.emptyMap());\r
  54         }\r
  55 \r
  56         public static <T> T accept(RequestProcessor processor, Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {\r
  57                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(processor, hints);\r
  58                 return null;\r
  59         }\r
  60 \r
  61         public static <T> T accept(ReadGraph graph, Set<Representation> set, Key key) throws DatabaseException {\r
  62                 return accept(graph, set, key, Collections.<String, Object>emptyMap());\r
  63         }\r
  64 \r
  65         public static <T> T accept(ReadGraph graph, Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {\r
  66                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(graph, hints);\r
  67                 return null;\r
  68         }\r
  69         \r
  70         public static <T> T acceptPossible(ReadGraph graph, Key key) throws DatabaseException {\r
  71                 return acceptPossible(graph, key, Collections.emptyMap());\r
  72         }\r
  73 \r
  74         public static <T> T acceptPossible(ReadGraph graph, Key key, Map<String,Object> hints) throws DatabaseException {\r
  75             Collection<T> results = accept(graph, key, hints);\r
  76             if(results.size() == 1) return results.iterator().next();\r
  77             else return null;\r
  78         }\r
  79 \r
  80     @SuppressWarnings("unchecked")\r
  81     public static <T> Collection<T> accept(ReadGraph graph, Key key, Map<String,Object> hints) throws DatabaseException {\r
  82         ArrayList<T> result = new ArrayList<T>();\r
  83         for(Set<Representation> rs : SimanticsInternal.getClipboard().getContents()) {\r
  84             for(Representation r : rs) {\r
  85                 if(r.getKey().equals(key)) {\r
  86                     result.add((T)r.getValue(graph, hints));\r
  87                     continue;\r
  88                 }\r
  89             }\r
  90         }\r
  91         return result;\r
  92     }\r
  93 \r
  94         public static SimanticsClipboard fileClipboard(String fileName) throws IOException {\r
  95                 \r
  96                 DataContainer container = DataContainers.readFile(new File(fileName));\r
  97                 \r
  98                 try {\r
  99                         Representation tgRep = new TGRepresentation((TransferableGraph1)container.content.getValue(TransferableGraph1.BINDING));\r
 100                         Representation dcRep = new DataContainerRepresentation(container);\r
 101                         return SimanticsClipboardImpl.make(dcRep, tgRep);\r
 102                 } catch (AdaptException e) {\r
 103                         Logger.defaultLogError(e);\r
 104                         return SimanticsClipboardImpl.EMPTY;\r
 105                 }\r
 106                 \r
 107                 \r
 108         }\r
 109         \r
 110         public static Representation createTransferableGraph(Resource ... resources) {\r
 111                 return new TGRepresentation(resources);\r
 112         }\r
 113 \r
 114         public static Representation createTransferableGraph(TransferableGraphConfiguration2 configuration) {\r
 115                 return new TGRepresentation(configuration);\r
 116         }\r
 117 \r
 118         public static Representation createTransferableGraph(boolean ignoreVirtualResources, Resource ... resources) {\r
 119                 return new TGRepresentation(ignoreVirtualResources, resources);\r
 120         }\r
 121 \r
 122         public static Representation createVariable(String uri) {\r
 123                 return new VariableRepresentation(uri);\r
 124         }\r
 125 \r
 126         public static Representation createVariable(RequestProcessor processor, final Variable var) {\r
 127                 \r
 128                 try {\r
 129                         \r
 130                         return new VariableRepresentation(processor.syncRequest(new Read<String>() {\r
 131 \r
 132                                 @Override\r
 133                                 public String perform(ReadGraph graph) throws DatabaseException {\r
 134                                         return var.getURI(graph);\r
 135                                 }\r
 136                                 \r
 137                         }));\r
 138                         \r
 139                 } catch (DatabaseException e) {\r
 140                         Logger.defaultLogError(e);\r
 141                 }\r
 142                 \r
 143                 return null;\r
 144                 \r
 145         }\r
 146 \r
 147     public static Representation createCopyResources(final Collection<Resource> resources) {\r
 148         return new ResourceCopyRepresentation(resources);\r
 149     }\r
 150 \r
 151     public static Representation createCutResources(final Collection<Resource> resources) {\r
 152         return new ResourceCutRepresentation(resources);\r
 153     }\r
 154     \r
 155     public static PasteHandler pasteHandler(Resource resource) throws DatabaseException {\r
 156         return SimanticsInternal.sync(new ResourceRead<PasteHandler>(resource) {\r
 157 \r
 158                         @Override\r
 159                         public PasteHandler perform(ReadGraph graph) throws DatabaseException {\r
 160                                 return graph.adapt(resource, PasteHandler.class);\r
 161                         }\r
 162                 \r
 163         });\r
 164     }\r
 165 \r
 166 }\r