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