bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/VariableStringPropertyFactory.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 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.browsing.ui.swt.widgets;
  13
  14 import java.util.Arrays;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17
  18 import org.simantics.browsing.ui.swt.widgets.impl.ReadFactoryImpl;
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.layer0.variable.Variable;
  22 import org.simantics.db.layer0.variable.Variables;
  23 import org.simantics.utils.datastructures.Quad;
  24
  25
  26 public class VariableStringPropertyFactory extends ReadFactoryImpl<Variable, String> {
  27
  28         final private String format;
  29         final private Collection<String> properties;
  30
  31         public VariableStringPropertyFactory(String property) {
  32                 this.properties = Collections.singleton(property);
  33                 this.format = "%1";
  34         }
  35
  36         public VariableStringPropertyFactory(String format, String ... properties) {
  37                 this.properties = Arrays.asList(properties);
  38                 this.format = format;
  39         }
  40
  41         @Override
  42         public Object getIdentity(Object inputContents) {
  43                 return new Quad<Variable, String, Collection<String>, Object>((Variable)inputContents, format, properties, getClass());
  44         }
  45
  46         public String toString(ReadGraph graph, Variable variable, String property, Object value) throws DatabaseException {
  47 //              System.out.println("toString " + value);
  48                 if(value == null) {
  49                         return "VariableStringPropertyFactory: no value for " + property + " in variable " + variable;//variable.getURI(graph);
  50                 } else if(value instanceof Variable) {
  51                         String result = ((Variable)value).getPossiblePropertyValue(graph, Variables.NAME);
  52 //                      System.out.println("toString[Variable] = " + result);
  53                         return result;
  54                 } else {
  55                         return value.toString();
  56                 }
  57         }
  58
  59         public String toPossibleString(ReadGraph graph, Variable variable, String property, Object value) throws DatabaseException {
  60                 if(value == null) return "";
  61                 return toString(graph, variable, property, value);
  62         }
  63
  64         @Override
  65         public String perform(ReadGraph graph, Variable variable) throws DatabaseException {
  66
  67                 if(variable == null) return "<Error: variable was null>";
  68
  69                 int index = 1;
  70                 String result = format;
  71                 for(String property : properties) {
  72 //                      System.out.println("variablestringpropertyfactory " + property);
  73                         Variable target = variable.browsePossible(graph, property);
  74                         Object targetValue = target != null ? target.getValue(graph) : null;
  75                         String possibleTargetString = toPossibleString(graph, variable, property, targetValue);
  76                         result = result.replace("?%" + (index), possibleTargetString);
  77                         String targetString = toString(graph, variable, property, targetValue);
  78                         result = result.replace("%" + (index), targetString);
  79                         index++;
  80                 }
  81                 return result;
  82
  83         }
  84
  85 }