org.datacleaner.widgets.properties.SingleCharacterPropertyWidget Maven / Gradle / Ivy

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/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.widgets.properties;

import javax.inject.Inject;
import javax.swing.event.DocumentEvent;

import org.datacleaner.descriptors.ConfiguredPropertyDescriptor;
import org.datacleaner.job.builder.ComponentBuilder;
import org.datacleaner.util.DCDocumentListener;
import org.datacleaner.widgets.CharTextField;

public class SingleCharacterPropertyWidget extends AbstractPropertyWidget {

	private final CharTextField _textField;
	private final DCDocumentListener _listener = new DCDocumentListener() {
		@Override
		protected void onChange(DocumentEvent e) {
			fireValueChanged();
		}
	};
	
	@Inject
	public SingleCharacterPropertyWidget(ConfiguredPropertyDescriptor propertyDescriptor,
			ComponentBuilder componentBuilder) {
		super(componentBuilder, propertyDescriptor);
		_textField = new CharTextField();
		Character currentValue = getCurrentValue();
		setValue(currentValue);

		_textField.addDocumentListener(_listener);

		add(_textField);
	}

	public boolean isSet() {
		Character value = _textField.getValue();
		return value != null;
	};

	@Override
	public Character getValue() {
		Character value = _textField.getValue();
		if (value == null) {
			if (getPropertyDescriptor().getBaseType().isPrimitive()) {
				// cannot return null if it's a primitive char.
				return (char) 0;
			} else {
				return null;
			}
		}
		return value;
	}

	@Override
	protected void setValue(Character value) {
		_textField.removeDocumentListener(_listener);
		_textField.setValue(value);
		_textField.addDocumentListener(_listener);
	}
}