/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2012, Johann Sorel
*
* 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.geotoolkit.gui.swing.propertyedit.featureeditor;
import java.awt.BorderLayout;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
import org.opengis.feature.AttributeType;
import org.opengis.feature.PropertyType;
/**
* Editor for one Character.
*
* @author Quentin Boileau (Geomatys)
*/
public class CharacterEditor extends PropertyValueEditor implements DocumentListener {
private JTextField current = new JTextField();
public CharacterEditor() {
super(new BorderLayout());
current.setDocument(new CustomDocument());
add(BorderLayout.CENTER, current);
}
@Override
public boolean canHandle(PropertyType candidate) {
return candidate instanceof AttributeType && Character.class.equals(((AttributeType)candidate).getValueClass());
}
@Override
public void setValue(PropertyType propertyType, Object value) {
removeAll();
add(BorderLayout.CENTER, current);
if (value instanceof Character) {
current.setText(((Character) value).toString());
}else{
current.setText("");
}
current.getDocument().addDocumentListener(this);
current.addFocusListener(this);
}
@Override
public Object getValue() {
if (!(current.getText().isEmpty())) {
return Character.valueOf(current.getText().charAt(0));
}
return null;
}
@Override
public void insertUpdate(DocumentEvent e) {
valueChanged();
}
@Override
public void removeUpdate(DocumentEvent e) {
valueChanged();
}
@Override
public void changedUpdate(DocumentEvent e) {
//never fired in JTextField
}
@Override
public void setEnabled(boolean enabled) {
current.setEnabled(enabled);
}
@Override
public boolean isEnabled() {
return current.isEnabled();
}
/**
* Custom document to keep only last typed character in the TextField text.
*/
private class CustomDocument extends PlainDocument {
@Override
public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
String newChar = str.substring(str.length()-1);
this.remove(0, this.getLength());
super.insertString(0, newChar, a);
}
@Override
public void remove(int offs, int len) throws BadLocationException {
super.remove(offs, len);
}
}
}