bundles/org.simantics.selectionview/src/org/simantics/selectionview/VariablePropertyModifierRule.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 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.selectionview;
  13
  14 import java.util.List;
  15
  16 import org.simantics.browsing.ui.content.Labeler.Modifier;
  17 import org.simantics.browsing.ui.graph.impl.EnumerationVariableModifier3;
  18 import org.simantics.browsing.ui.model.modifiers.ModifierRule;
  19 import org.simantics.browsing.ui.model.modifiers.VariableModifier2;
  20 import org.simantics.db.ReadGraph;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.layer0.variable.Variable;
  23 import org.simantics.db.layer0.variable.Variables;
  24
  25 /**
  26  * @author Tuukka Lehtonen
  27  */
  28 public class VariablePropertyModifierRule implements ModifierRule {
  29
  30     @Override
  31     public boolean isCompatible(Class<?> contentType) {
  32         return contentType.equals(Variable.class);
  33     }
  34
  35     @Override
  36     public Modifier getModifier(ReadGraph graph, Object _content, String columnKey_) throws DatabaseException {
  37
  38         if (!(_content instanceof Variable))
  39             return null;
  40
  41         Variable content = (Variable)_content;
  42
  43         // If the whole property is considered read-only, don't allow modification.
  44         Boolean readOnly = content.getPossiblePropertyValue(graph, Variables.READONLY);
  45         if (Boolean.TRUE.equals(readOnly))
  46             return null;
  47
  48         String columnKey = columnKey_;
  49         if(columnKey.startsWith("#")) columnKey = columnKey.substring(1);
  50
  51         // If the specified column of the property is considered read-only, don't allow modification.
  52         Variable columnVariable = content.getPossibleProperty(graph, columnKey);
  53         if (columnVariable != null) {
  54             readOnly = columnVariable.getPossiblePropertyValue(graph, Variables.READONLY);
  55             if (Boolean.TRUE.equals(readOnly))
  56                 return null;
  57         }
  58
  59         for (Variable property : content.getProperties(graph)) {
  60             String column = property.getPossiblePropertyValue(graph, Variables.DISPLAY_COLUMN);
  61             if (column != null) {
  62                 if (columnKey.equals(column)) {
  63
  64                         if(columnKey_.startsWith("#"))
  65                         return new VariableModifier2(graph, property);
  66
  67                     Modifier custom = property.getPossiblePropertyValue(graph, Variables.CUSTOM_MODIFIER);
  68                     if (custom != null) return custom;
  69
  70                     List<String> enumeration = property.getPossiblePropertyValue(graph, Variables.ENUMERATION_VALUES);
  71                     if (enumeration != null) {
  72                         return new EnumerationVariableModifier3(graph, property, enumeration);
  73                     } else {
  74                         return new VariableModifier2(graph, property);
  75                     }
  76
  77                 }
  78             }
  79         }
  80
  81         return null;
  82
  83     }
  84
  85 }