1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.browsing.ui.graph.impl;
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14 import java.util.List;
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16 import org.simantics.browsing.ui.content.Labeler.EnumerationModifier;
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17 import org.simantics.databoard.Bindings;
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18 import org.simantics.db.ReadGraph;
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19 import org.simantics.db.RequestProcessor;
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20 import org.simantics.db.Session;
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21 import org.simantics.db.VirtualGraph;
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22 import org.simantics.db.WriteGraph;
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23 import org.simantics.db.common.request.WriteRequest;
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24 import org.simantics.db.exception.DatabaseException;
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25 import org.simantics.db.layer0.variable.Variable;
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26 import org.simantics.db.layer0.variable.Variables;
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27 import org.simantics.db.request.Read;
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28 import org.simantics.utils.datastructures.Callback;
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29 import org.simantics.utils.ui.ErrorLogger;
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32 * @author Tuukka Lehtonen
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34 public class EnumerationVariableModifier3 implements EnumerationModifier {
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36 protected final Session session;
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37 protected final Variable variable;
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38 protected final List<String> allowedValues;
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39 protected final String defaultValue;
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41 protected Throwable modifierFailed;
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43 public EnumerationVariableModifier3(RequestProcessor processor, Variable variable, List<String> allowedValues) {
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45 this.session = processor.getSession();
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46 this.variable = variable;
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47 this.allowedValues = allowedValues;
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48 this.defaultValue = computeDefaultValue(processor, variable);
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49 //System.err.println(this.defaultValue);
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53 protected String computeDefaultValue(RequestProcessor processor, final Variable variable) {
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55 return processor.syncRequest(new Read<String>() {
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57 public String perform(ReadGraph graph) throws DatabaseException {
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58 // System.err.println(variable.getURI(graph));
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59 return variable.getValue(graph);//variable.getPossiblePropertyValue(graph, Variables.LABEL);
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62 } catch (DatabaseException e) {
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67 public class Write extends WriteRequest {
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69 final private Variable variable;
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70 final private String label;
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72 public Write(Variable variable, String label) {
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73 super((VirtualGraph)null);
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74 this.variable = variable;
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79 public void perform(WriteGraph graph) throws DatabaseException {
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80 variable.setValue(graph, label, Bindings.STRING);
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85 protected void doModify(final String label) {
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86 session.asyncRequest(new Write(variable, label),
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87 new Callback<DatabaseException>() {
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89 public void run(DatabaseException parameter) {
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90 if (parameter != null)
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91 ErrorLogger.defaultLogError(parameter);
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97 public String getValue() {
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98 return defaultValue;
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102 public String isValid(String label) {
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103 if (modifierFailed != null)
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104 return "Could not resolve validator for this value, modification denied. Reason: "
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105 + modifierFailed.getMessage();
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106 // Validity should already be enforced by the editing UI for
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112 public final void modify(String label) {
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113 if (modifierFailed != null)
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114 // Should never end up here, isValid should prevent it.
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115 throw new Error("modifier failed: " + modifierFailed.getMessage());
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120 public List<String> getValues() {
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121 return allowedValues;
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