/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.swing.wizard;
import javax.swing.JComponent;
import javax.swing.JTextField;
import org.geotools.data.Parameter;
import org.geotools.swing.wizard.JWizard.Controller;
/**
* Widget for double values
*
* @author gdavis
*
* @source $URL$
*/
public class JDoubleField extends ParamField {
private JTextField text;
public JDoubleField(Parameter<?> parameter) {
super(parameter);
}
public JComponent doLayout() {
text = new JTextField(16);
return text;
}
public Object getValue() {
String val = text.getText();
if (val == null || val.equals("")) {
return new Double(0);
}
try {
return new Double(val);
} catch (NumberFormatException e) {
return new Double(0);
}
}
public void addListener(Controller controller) {
text.addKeyListener(controller);
}
public void removeListener(Controller controller) {
text.addKeyListener(controller);
}
public void setValue(Object value) {
text.setText(((Double) value).toString());
}
public boolean validate() {
String val = text.getText();
try {
Double d = Double.parseDouble(val);
return d != null;
} catch (NumberFormatException e) {
return false;
}
}
}