]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/chart/property/DoublePropertyModifier.java
Contextual adapters must throw instead of returning null
[simantics/platform.git] / bundles / org.simantics.modeling.ui / src / org / simantics / modeling / ui / chart / property / DoublePropertyModifier.java
1 /*******************************************************************************
2  * Copyright (c) 2010, 2011 Association for Decentralized Information Management in
3  * 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.modeling.ui.chart.property;
13
14 import org.simantics.browsing.ui.swt.widgets.impl.TextModifyListenerImpl;
15 import org.simantics.databoard.Bindings;
16 import org.simantics.db.Resource;
17 import org.simantics.db.WriteGraph;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.management.ISessionContext;
20
21 public class DoublePropertyModifier extends TextModifyListenerImpl<Resource> {
22
23     final private String propertyURI;
24
25     public DoublePropertyModifier(ISessionContext context, String propertyURI) {
26         this.propertyURI = propertyURI;
27     }
28
29     @Override
30     public void applyText(WriteGraph graph, Resource input, String text) throws DatabaseException {
31         if (text == null || text.trim().isEmpty()) {
32             if (graph.hasStatement(input, graph.getResource(propertyURI)))
33                 graph.denyValue(input, graph.getResource(propertyURI));
34         } else {
35             graph.claimLiteral(input, graph.getResource(propertyURI), Double.parseDouble(text), Bindings.DOUBLE);
36         }
37     }
38
39 }