ClassificationValuesEditor.java

/*----------------    FILE HEADER  ------------------------------------------
 This file is part of deegree.
 Copyright (C) 2001-2007 by:
 Department of Geography, University of Bonn
 http://www.giub.uni-bonn.de/deegree/
 lat/lon GmbH
 http://www.lat-lon.de

 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; either
 version 2.1 of the License, or (at your option) any later version.
 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.
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 Contact:

 Andreas Poth
 lat/lon GmbH
 Aennchenstr. 19
 53177 Bonn
 Germany
 E-Mail: poth@lat-lon.de

 Prof. Dr. Klaus Greve
 Department of Geography
 University of Bonn
 Meckenheimer Allee 166
 53115 Bonn
 Germany
 E-Mail: greve@giub.uni-bonn.de
 ---------------------------------------------------------------------------*/

package org.deegree.igeo.views.swing.style.editor;

import static org.deegree.igeo.style.model.classification.ThematicGroupingInformation.GROUPINGTYPE.QUALITY;
import static org.deegree.igeo.style.model.classification.ThematicGroupingInformation.GROUPINGTYPE.UNIQUE;

import java.awt.Component;
import java.util.Locale;

import javax.swing.DefaultCellEditor;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.JTextField;

import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.igeo.i18n.Messages;
import org.deegree.igeo.style.model.classification.Intervallable;
import org.deegree.igeo.style.model.classification.ValueRange;

/**
 * <code>DoubleValuesEditor</code>
 * 
 * @author <a href="mailto:buesching@lat-lon.de">Lyn Buesching</a>
 * @author last edited by: $Author$
 * 
 * @version $Revision$, $Date$
 * 
 */
public class ClassificationValuesEditor<U extends Comparable<U>> extends DefaultCellEditor {

    private static final long serialVersionUID = -3741066851591726896L;

    private static final ILogger LOG = LoggerFactory.getLogger( ClassificationValuesEditor.class );

    private ValueRange<U> valueRange;

    private Intervallable<U> dummy;

    /**
     * @param dummy
     *            the dummy value is required to have access to a Intervallable and methods to create a new
     *            intervallable out of a string or get the invalid intervallable message after editing a value
     */
    public ClassificationValuesEditor( Intervallable<U> dummy ) {
        super( new JTextField() );
        this.dummy = dummy;
    }

    @Override
    public boolean stopCellEditing() {
        String text = ( (JTextField) getComponent() ).getText();
        try {
            Intervallable<U> value = dummy.getAsIntervallable( text );
            // check if value has changed
            if ( UNIQUE.equals( valueRange.getGroupingType() ) ||  QUALITY.equals( valueRange.getGroupingType() ) ) {
                valueRange.setMax( value );
                valueRange.setMin( value );
            } else if ( valueRange.getMin() != null && !valueRange.getMin().equals( value ) ) {
                // keep classification type 'unique' (expressed by equal min/max values)
                if ( valueRange.getMin().equals( valueRange.getMax() ) ) {
                    valueRange.setMax( value );
                }
                valueRange.setMin( value );
            } else if ( valueRange.getMin() == null && valueRange.getMax() == null ) {
                valueRange.setMin( value );
            } else {
                // otherwise cancel cell editing
                fireEditingCanceled();
                return false;
            }
        } catch ( Exception e ) {
            LOG.logError( e );
            String msg = dummy.getInvalidMessage( text );
            JOptionPane.showMessageDialog( getComponent(), msg, Messages.getMessage( Locale.getDefault(), "$MD10751" ),
                                           JOptionPane.ERROR_MESSAGE );
            return false;
        }

        return super.stopCellEditing();
    }

    @SuppressWarnings("unchecked")
    @Override
    public Component getTableCellEditorComponent( JTable table, Object value, boolean isSelected, int row, int column ) {
        valueRange = (ValueRange<U>) value;
        JTextField tf = (JTextField) getComponent();
        tf.setText( valueRange.getEditorLabel() );
        return tf;

    }

    @Override
    public Object getCellEditorValue() {
        return valueRange;
    }

    /**
     * 
     * @return the value range edited by this editor
     */
    public ValueRange<U> getValueRange() {
        return valueRange;
    }

    /**
     * @param valueRange
     *            the value range to edit
     */
    public void setValueRange( ValueRange<U> valueRange ) {
        this.valueRange = valueRange;
    }

}