bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/modifiers/StringPropertyModifierRule.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 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.browsing.ui.model.modifiers;\r
  13 \r
  14 import org.simantics.browsing.ui.common.ColumnKeys;\r
  15 import org.simantics.browsing.ui.common.ErrorLogger;\r
  16 import org.simantics.browsing.ui.content.Labeler.Modifier;\r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.Session;\r
  20 import org.simantics.db.Statement;\r
  21 import org.simantics.db.WriteGraph;\r
  22 import org.simantics.db.common.request.WriteRequest;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.layer0.adapter.StringModifier;\r
  25 import org.simantics.db.layer0.adapter.StringModifierFactory;\r
  26 import org.simantics.db.layer0.util.Layer0Utils;\r
  27 \r
  28 /**\r
  29  * @author Tuukka Lehtonen\r
  30  */\r
  31 public class StringPropertyModifierRule implements ModifierRule {\r
  32 \r
  33     private Resource propertyRelation;\r
  34 \r
  35     public StringPropertyModifierRule(ReadGraph graph, String propertyRelationURI) throws DatabaseException {\r
  36         this.propertyRelation = graph.getResource(propertyRelationURI);\r
  37     }\r
  38 \r
  39     @Override\r
  40     public boolean isCompatible(Class<?> contentType) {\r
  41         return contentType.equals(Resource.class);\r
  42     }\r
  43 \r
  44     @Override\r
  45     public Modifier getModifier(ReadGraph graph, Object content,\r
  46             String columnKey) throws DatabaseException {\r
  47         if(!ColumnKeys.SINGLE.equals(columnKey))\r
  48             return null;\r
  49         if(!(content instanceof Resource))\r
  50             return null;\r
  51 \r
  52         Resource resource = (Resource)content;\r
  53         final Statement nameStm = graph.getPossibleStatement(resource, propertyRelation);\r
  54         if (nameStm == null)\r
  55             return null;\r
  56 \r
  57         StringModifierFactory smf = graph.getPossibleAdapter(resource, StringModifierFactory.class);\r
  58         if (smf != null) {\r
  59             final StringModifier sm = smf.createModifier(graph, propertyRelation, nameStm.getObject());\r
  60             if (sm != null)\r
  61                 return modifierFor(graph.getSession(), sm, nameStm.getObject());\r
  62         }\r
  63 \r
  64         return new L0StringModifier(graph.getSession(), resource, propertyRelation, nameStm.getObject());\r
  65     }\r
  66 \r
  67     private Modifier modifierFor(final Session session, final StringModifier sm, final Resource valueResource) {\r
  68         return new Modifier() {\r
  69             @Override\r
  70             public String getValue() {\r
  71                 return sm.getValue();\r
  72 //                try {\r
  73 //                    return session.syncRequest(new PossibleAdapter<String>(valueResource, String.class));\r
  74 //                } catch (DatabaseException e) {\r
  75 //                    ErrorLogger.defaultLogError(e);\r
  76 //                    return null;\r
  77 //                }\r
  78             }\r
  79             @Override\r
  80             public String isValid(String label) {\r
  81                 return sm.isValid(label);\r
  82             }\r
  83             @Override\r
  84             public void modify(final String label) {\r
  85                 try {\r
  86                     session.syncRequest(new WriteRequest() {\r
  87                         @Override\r
  88                         public void perform(WriteGraph graph) throws DatabaseException {\r
  89                                 Layer0Utils.addCommentMetadata(graph, "Modify string");\r
  90                                 graph.markUndoPoint();\r
  91                             sm.modify(graph, label);\r
  92                         }\r
  93                     });\r
  94                 } catch (DatabaseException e) {\r
  95                     ErrorLogger.defaultLogError(e);\r
  96                 }\r
  97             }\r
  98         };\r
  99     }\r
 100 \r
 101 }\r