Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.app.project.documents.view.legend.gui;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.NumberFormat;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import javax.swing.BorderFactory;

import javax.swing.DefaultComboBoxModel;

import javax.swing.ImageIcon;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.app.gui.panels.ColorChooserPanel;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.exceptions.LegendLayerException;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.operations.ClassifiableVectorial;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.fmap.mapcontext.rendering.legend.IInterval;

import org.gvsig.fmap.mapcontext.rendering.legend.ILegend;

import org.gvsig.fmap.mapcontext.rendering.legend.IVectorialIntervalLegend;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.gui.beans.swing.GridBagLayoutPanel;

import org.gvsig.gui.beans.swing.JButton;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl.FInterval;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl.VectorialIntervalLegend;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class VectorialInterval extends JPanel implements ILegendPanel{

    private static final Logger logger = LoggerFactory

            .getLogger(VectorialInterval.class);

    private GridBagLayoutPanel pnlGeneral = null;

    protected JComboBox cmbField = null;

    protected JTextField txtNumIntervals = null;

    private ColorChooserPanel colorChooserPanel = null;

    private ColorChooserPanel colorChooserPanel1 = null;

    protected JCheckBox chkdefaultvalues = null;

    protected JComboBox cmbIntervalType = null;

    private JPanel panelS = null;

    private JButton bintervals = null;

    private JButton bInsert = null;

    protected JButton bDelAll = null;

    protected JButton bDel = null;

    private int count = 0;

    protected ClassifiableVectorial layer;

    protected VectorialIntervalLegend theLegend;

    protected IVectorialIntervalLegend auxLegend = null;

    protected SymbolTable symbolTable;

    private MyListener listener = new MyListener();

    protected JPanel pnlCenter = null;

    protected JPanel optionPanel;

    private JPanel pnlNorth;

        protected JSymbolPreviewButton defaultSymbolPrev;

        private GridBagLayoutPanel defaultSymbolPanel = new GridBagLayoutPanel();

        private MapContextManager mapContextManager = MapContextLocator

                        .getMapContextManager();

    /**

     * This is the default constructor

     */

    public VectorialInterval() {

        super();

        initialize();

    }

    /**

     * This method initializes this

     */

    private void initialize() {

        this.setLayout(new BorderLayout());

        this.setSize(700, 350);

        this.add(getPnlNorth(), BorderLayout.NORTH);

        this.add(getPnlButtons(), BorderLayout.SOUTH);

        this.add(getPnlCenter(), BorderLayout.CENTER);

        setOptionPanel(getOptionPanel());

    }

    private JPanel getPnlNorth() {

        if (pnlNorth == null) {

            pnlNorth = new JPanel(new GridLayout(1, 2));

            pnlNorth.add(getGeneralPanel());

        }

        return pnlNorth;

    }

    /**

     * This method initializes panelN

     *

     * @return javax.swing.JPanel

     */

    private JPanel getGeneralPanel() {

        if (pnlGeneral == null) {

            pnlGeneral = new GridBagLayoutPanel();

            pnlGeneral.setBorder(BorderFactory.

                    createTitledBorder(null,

                            PluginServices.getText(this, "fields")));

            pnlGeneral.addComponent(PluginServices.getText(this, "Campo_de_clasificacion"),

                    getCmbFields());

            pnlGeneral.addComponent(PluginServices.getText(this, "tipo_de_intervalo"),

                    getCmbIntervalTypes());

            JPanel aux = new JPanel(new FlowLayout(FlowLayout.LEADING, 0, 0));

            aux.add(getTxtNumIntervals());

            pnlGeneral.addComponent(PluginServices.getText(this, "No_de_intervalos"),

                    aux);

            defaultSymbolPanel.add(getChkDefaultvalues(), null);

                        pnlGeneral.addComponent(defaultSymbolPanel);

        }

        return pnlGeneral;

    }

    public JPanel getOptionPanel() {

        if (optionPanel == null) {

            optionPanel = new JPanel(new FlowLayout(FlowLayout.LEADING));

            optionPanel.setBorder(BorderFactory.

                    createTitledBorder(null,

                            PluginServices.getText(this, "color_ramp")));

            GridBagLayoutPanel aux = new GridBagLayoutPanel();

            aux.addComponent(PluginServices.getText(this, "Color_inicio"),

                    getColorChooserPanel());

            aux.addComponent(PluginServices.getText(this, "Color_final"),

                    getColorChooserPanel1());

            optionPanel.add(aux);

        }

        return optionPanel;

    }

    private void setOptionPanel(JPanel p) {

        getPnlNorth().remove(getOptionPanel());

        getPnlNorth().add(p, BorderLayout.NORTH);

    }

    /**

     * This method initializes jComboBox

     *

     * @return javax.swing.JComboBox

     */

    private JComboBox getCmbFields() {

        if (cmbField == null) {

            cmbField = new JComboBox();

            cmbField.setActionCommand("FIELD_SELECTED");

            cmbField.addActionListener(listener);

            cmbField.setVisible(true);

        }

        return cmbField;

    }

    /**

     * This method initializes txtNumIntervals

     *

     * @return javax.swing.JTextField

     */

    private JTextField getTxtNumIntervals() {

        if (txtNumIntervals == null) {

            txtNumIntervals = new JTextField(5);

            txtNumIntervals.setText("5");

        }

        return txtNumIntervals;

    }

    /**

     * This method initializes colorChooserPanel

     *

     * @return com.iver.cit.gvsig.gui.Panels.ColorChooserPanel

     */

    private ColorChooserPanel getColorChooserPanel() {

        if (colorChooserPanel == null) {

            colorChooserPanel = new ColorChooserPanel();

            colorChooserPanel.setBounds(new java.awt.Rectangle(108, 49, 54, 20));

            colorChooserPanel.setAlpha(255);

            colorChooserPanel.setColor(Color.red);

        }

        return colorChooserPanel;

    }

    /**

     * This method initializes colorChooserPanel1

     *

     * @return com.iver.cit.gvsig.gui.Panels.ColorChooserPanel

     */

    private ColorChooserPanel getColorChooserPanel1() {

        if (colorChooserPanel1 == null) {

            colorChooserPanel1 = new ColorChooserPanel();

            colorChooserPanel1.setBounds(new java.awt.Rectangle(251, 49, 54, 20));

            colorChooserPanel1.setAlpha(255);

            colorChooserPanel1.setColor(Color.blue);

        }

        return colorChooserPanel1;

    }

    /**

     * This method initializes chkdefaultvalues

     *

     * @return javax.swing.JCheckBox

     */

    protected JCheckBox getChkDefaultvalues() {

                if (chkdefaultvalues == null) {

                        chkdefaultvalues = new JCheckBox();

                        chkdefaultvalues.setText(PluginServices.getText(this,

                        "resto_valores")+": ");

                        chkdefaultvalues.setBounds(new java.awt.Rectangle(342, 26, 141, 20));

                        chkdefaultvalues.setSelected(false);

                        chkdefaultvalues.addActionListener(new java.awt.event.ActionListener() {

                                public void actionPerformed(java.awt.event.ActionEvent e) {

                                        if (chkdefaultvalues.isSelected()) {

                                                auxLegend.useDefaultSymbol(true);

                                        } else {

                                                auxLegend.useDefaultSymbol(false);

                                        }

                                }

                        });

                }

                return chkdefaultvalues;

        }

    /**

     * This method initializes jComboBox1

     *

     * @return javax.swing.JComboBox

     */

    private JComboBox getCmbIntervalTypes() {

        if (cmbIntervalType == null) {

            cmbIntervalType = new JComboBox();

            cmbIntervalType.setActionCommand("INTERVAL_TYPE");

            cmbIntervalType.addActionListener(listener);

            cmbIntervalType.addItem(PluginServices.getText(this, "equal_intervals"));

            cmbIntervalType.addItem(PluginServices.getText(this,

                    "natural_intervals"));

            cmbIntervalType.addItem(PluginServices.getText(this,

                    "quantile_intervals"));

            cmbIntervalType.setVisible(true);

        }

        return cmbIntervalType;

    }

    /**

     * This method initializes panelS

     *

     * @return javax.swing.JPanel

     */

    protected JPanel getPnlButtons() {

        if (panelS == null) {

            panelS = new JPanel();

            panelS.setPreferredSize(new java.awt.Dimension(417, 32));

            panelS.add(getBintervals(), null);

            panelS.add(getBInsert(), null);

            panelS.add(getBDelAll(), null);

            panelS.add(getBDel(), null);

        }

        return panelS;

    }

    /**

     * This method initializes bintervals

     *

     * @return javax.swing.JButton

     */

    private JButton getBintervals() {

        if (bintervals == null) {

            bintervals = new JButton();

            bintervals.setActionCommand("ADD_ALL_VALUES");

            bintervals.addActionListener(listener);

            bintervals.setText(PluginServices.getText(this,

                    "Calcular_intervalos"));

        }

        return bintervals;

    }

    /**

     * This method initializes bInsert

     *

     * @return javax.swing.JButton

     */

    private JButton getBInsert() {

        if (bInsert == null) {

            bInsert = new JButton();

            bInsert.setActionCommand("ADD_VALUE");

            bInsert.addActionListener(listener);

            bInsert.setText(PluginServices.getText(this, "Anadir"));

        }

        return bInsert;

    }

    /**

     * This method initializes bDelAll

     *

     * @return javax.swing.JButton

     */

    private JButton getBDelAll() {

        if (bDelAll == null) {

            bDelAll = new JButton();

            bDelAll.setActionCommand("REMOVE_ALL");

            bDelAll.addActionListener(listener);

            bDelAll.setText(PluginServices.getText(this, "Quitar_todos"));

        }

        return bDelAll;

    }

    /**

     * This method initializes bDel

     *

     * @return javax.swing.JButton

     */

    private JButton getBDel() {

        if (bDel == null) {

            bDel = new JButton();

            bDel.setText(PluginServices.getText(this, "Quitar"));

            bDel.setActionCommand("REMOVE");

            bDel.addActionListener(listener);

        }

        return bDel;

    }

    /**

     * Damos una primera pasada para saber los l�mites inferior y superior y

     * rellenar un array con los valores. Luego dividimos ese array en

     * intervalos.

     */

    protected void fillTableValues() {

        symbolTable.removeAllItems();

        try {

            IInterval[] arrayIntervalos = calculateIntervals();

            if (arrayIntervalos == null) {

                                return;

                        }

            IInterval interval;

            NumberFormat.getInstance().setMaximumFractionDigits(2);

            //theLegend.clear();

            auxLegend.clear();

            int r;

            int g;

            int b;

            int stepR;

            int stepG;

            int stepB;

            // Cogemos el tipo de gradaci�n de colores que quiere el usuario y

            // Creamos el primer y �ltimo color.

            Color startColor = colorChooserPanel.getColor();

            Color endColor = colorChooserPanel1.getColor();

            r = startColor.getRed();

            g = startColor.getGreen();

            b = startColor.getBlue();

            stepR = (endColor.getRed() - r) / arrayIntervalos.length;

            stepG = (endColor.getGreen() - g) / arrayIntervalos.length;

            stepB = (endColor.getBlue() - b) / arrayIntervalos.length;

//            auxLegend = LegendFactory.createVectorialIntervalLegend(layer.getShapeType());

                        auxLegend = (IVectorialIntervalLegend) MapContextLocator

                                        .getMapContextManager().createLegend(

                                                        IVectorialIntervalLegend.LEGEND_NAME);

            auxLegend.setShapeType(layer.getShapeType());

            auxLegend.useDefaultSymbol(false);

            auxLegend.setStartColor(startColor);

            auxLegend.setEndColor(endColor);

            int symbolType = layer.getShapeType();

            int numSymbols = 0;

            for (int k = 0; k < arrayIntervalos.length; k++) {

                interval = arrayIntervalos[k];

                                ISymbol theSymbol =

                                                mapContextManager.getSymbolManager().createSymbol(

                                symbolType,

                                new Color(r, g, b));

                theSymbol.setDescription(NumberFormat.getInstance().format(interval.getMin()) +

                    " - " +

                    NumberFormat.getInstance().format(interval.getMax()));

                //////////////////////////////////////

                // CALCULAMOS UN COLOR APROPIADO

                r = r + stepR;

                g = g + stepG;

                b = b + stepB;

                /////////////////////////////////

                auxLegend.addSymbol(interval, theSymbol);

                numSymbols++;

                if (numSymbols > 100) {

                    int resp = JOptionPane.showConfirmDialog(this,

                            PluginServices.getText(this, "mas_de_100_simbolos"),

                            PluginServices.getText(this, "quiere_continuar"),

                            JOptionPane.YES_NO_OPTION,

                            JOptionPane.WARNING_MESSAGE);

                    if ((resp == JOptionPane.NO_OPTION) ||

                            (resp == JOptionPane.DEFAULT_OPTION)) {

                        return;

                    }

                }

                // }

            } // for

          symbolTable.fillTableFromSymbolList(auxLegend.getSymbols(),

          auxLegend.getValues(), auxLegend.getDescriptions());

        } catch (DataException e) {

                NotificationManager.addError(PluginServices.getText(this, "could_not_get_shape_type"), e);

        } catch (LegendLayerException e) {

                NotificationManager.addError(PluginServices.getText(this, "failed_computing_intervals"), e);

                }

        bDelAll.setEnabled(true);

        bDel.setEnabled(true);

    }

    protected IInterval[] calculateIntervals() throws LegendLayerException {

            int intervalCount = 1;

            // ensure the interval value is an integer greather than 0

            try {

                    intervalCount = (int) Double.

                                    parseDouble(txtNumIntervals.getText());

                    if (intervalCount<1) {

                            throw new Exception();

                    }

            } catch (Exception e) {

                    JOptionPane.showMessageDialog(this,

                                    PluginServices.getText(this, "invalid_interval_count_value"));

                    return null;

            }

            try {

            auxLegend.setIntervalType(getCmbIntervalTypes().getSelectedIndex());

                    return auxLegend.calculateIntervals(

                    //return theLegend.calculateIntervals(

                                    ((FLyrVect) layer).getFeatureStore(),

                                    (String) cmbField.getSelectedItem(),

                                    intervalCount,

                                    layer.getShapeType()

                                    );

            } catch (DataException e) {

                    return null;

            }

    }

    public void setData(FLayer layer, ILegend legend) {

        this.layer = (ClassifiableVectorial) layer;

            int shapeType = 0;

            try {

                    shapeType = this.layer.getShapeType();

            } catch (DataException e) {

                    NotificationManager.addError(PluginServices.getText(this, "generating_intervals"), e);

            }

            if (symbolTable != null) {

                        pnlCenter.remove(symbolTable);

                }

            getDefaultSymbolPrev(shapeType);

            symbolTable = new SymbolTable(this, SymbolTable.INTERVALS_TYPE, shapeType);

            pnlCenter.add(symbolTable);

        fillFieldNames();

/*        if (legend instanceof VectorialIntervalLegend) {

            theLegend = (VectorialIntervalLegend) legend;

            getChkDefaultvalues().setSelected(theLegend.isUseDefaultSymbol());

            cmbField.getModel().setSelectedItem(theLegend.getClassifyingFieldNames()[0]);

            symbolTable.fillTableFromSymbolList(theLegend.getSymbols(),

                theLegend.getValues(), theLegend.getDescriptions());

            colorChooserPanel.setColor(theLegend.getStartColor());

            colorChooserPanel1.setColor(theLegend.getEndColor());

            colorChooserPanel.repaint();

            colorChooserPanel1.repaint();

        } else {

                        // Si la capa viene con otro tipo de leyenda, creamos

                        // una nueva del tipo que maneja este panel

                        theLegend = new VectorialIntervalLegend();

                        theLegend.setShapeType(shapeType);

        }

        cmbFieldType.setSelectedIndex(theLegend.getIntervalType());

*/

                if (VectorialIntervalLegend.class.equals(legend.getClass())) {

                        auxLegend = (VectorialIntervalLegend) legend.cloneLegend();

                        chkdefaultvalues.setSelected(auxLegend.isUseDefaultSymbol());

                        cmbField.getModel().setSelectedItem(auxLegend.getClassifyingFieldNames()[0]);

                        //Patch to fix an array overflow 

            Object[] auxValues = auxLegend.getValues();

            List<ISymbol> symbols = new ArrayList();

            List<Object> values = new ArrayList();

            List<String> descriptions = new ArrayList();

            for( int i=0; i<auxValues.length; i++){

                Object key = auxValues[i];

                if (key!=null){

                    IInterval auxInterval = null;

                    if (key instanceof IInterval){

                        auxInterval = (IInterval) key;

                        ISymbol symbol = auxLegend.getSymbolByInterval(auxInterval);

                        symbols.add(symbol);

                        values.add(auxValues[i]);

                        descriptions.add(symbol.getDescription());

                    }

                }

            }

            symbolTable.fillTableFromSymbolList(

                symbols.toArray(new ISymbol[0]),

                values.toArray(),

                descriptions.toArray(new String[0]));

            //End Patch

                        colorChooserPanel.setColor(auxLegend.getStartColor());

                        colorChooserPanel1.setColor(auxLegend.getEndColor());

                        colorChooserPanel.repaint();

                        colorChooserPanel1.repaint();

                        if(auxLegend.isUseDefaultSymbol()) {

                                txtNumIntervals.setText(String.valueOf(auxLegend.getSymbols().length - 1));

                        } else {

                                txtNumIntervals.setText(String.valueOf(auxLegend.getSymbols().length));

                        }

                } else {

                        // Si la capa viene con otro tipo de leyenda, creamos

                        // una nueva del tipo que maneja este panel

                        auxLegend = new VectorialIntervalLegend();

                        auxLegend.setShapeType(shapeType);

                        auxLegend.useDefaultSymbol(false);

                }

                defaultSymbolPrev.setSymbol(auxLegend.getDefaultSymbol());

                cmbIntervalType.setSelectedIndex(auxLegend.getIntervalType());

    }

        public void getDefaultSymbolPrev(int shapeType) {

                if(defaultSymbolPrev == null){

                defaultSymbolPrev = new JSymbolPreviewButton(shapeType);

                defaultSymbolPrev.setPreferredSize(new Dimension(110,20));

                defaultSymbolPanel.add(defaultSymbolPrev,null);

                }

        }

    protected void fillFieldNames() {

        FeatureStore rs = null;

        ArrayList<String> nomFields = null;

        try {

            rs = ((FLyrVect) layer).getFeatureStore();

//            logger.debug("rs.start()");

//            rs.start();

            nomFields = new ArrayList<String>();

            int type;

            Iterator<FeatureAttributeDescriptor> iterator=rs.getDefaultFeatureType().iterator();

            while (iterator.hasNext()) {

                                FeatureAttributeDescriptor descriptor = iterator.next();

//                        }

//            for (int i = 0; i < rs.getFieldCount(); i++) {

                type = descriptor.getType();//rs.getFieldType(i);

//                if (type.equals(FeatureAttributeDescriptor.) == Types.NULL) {

//                    continue;

//                }

                if (type == DataTypes.INT ||

                                type == DataTypes.DOUBLE ||

                                type == DataTypes.FLOAT ||

                                type  == DataTypes.LONG)

                {

                        nomFields.add(descriptor.getName());

                }

            }

//            rs.stop();

        } catch (DataException e) {

                NotificationManager.addError(PluginServices.getText(this, "recovering_recordset"), e);

        }

        DefaultComboBoxModel cM = new DefaultComboBoxModel(nomFields.toArray());

        cmbField.setModel(cM);

        symbolTable.removeAllItems();

    }

    /**

     * @see com.iver.cit.gvsig.gui.legendmanager.panels.ILegendPanel#getLegend()

     */

     public ILegend getLegend() {

                fillSymbolListFromTable();

                if(defaultSymbolPrev.getSymbol() != null) {

                        auxLegend.setDefaultSymbol(defaultSymbolPrev.getSymbol());

                }

                auxLegend.useDefaultSymbol(chkdefaultvalues.isSelected());

                auxLegend.setIntervalType(cmbIntervalType.getSelectedIndex());

                theLegend = (VectorialIntervalLegend) auxLegend.cloneLegend();

                return theLegend;

        }

    /**

     * A partir de los registros de la tabla, regenera el FRenderer. (No solo

     * el symbolList, si no tambi�n el arrayKeys y el defaultRenderer

     */

    private void fillSymbolListFromTable() {

                ISymbol theSymbol;

                IInterval theInterval = null;

                // Borramos las anteriores listas:

                auxLegend.clear();

                String fieldName = (String) cmbField.getSelectedItem();

                auxLegend.setClassifyingFieldNames(new String[] {fieldName});

                ISymbol defsym = null;

        if (chkdefaultvalues.isSelected() && defaultSymbolPrev.getSymbol() != null) {

            defsym = (ISymbol) defaultSymbolPrev.getSymbol();

            String description = PluginServices.getText(this,"default");

            defsym.setDescription(description);

            auxLegend.setDefaultSymbol(defsym);

            auxLegend.useDefaultSymbol(true);

        } else {

            auxLegend.useDefaultSymbol(false);

        }

                FeatureStore rs;

                try {

                        rs = ((FLyrVect) layer).getFeatureStore();

                        FeatureType featureType=rs.getDefaultFeatureType();

                        auxLegend

                                        .setClassifyingFieldTypes(new int[] { new Integer(

                                                        featureType.getAttributeDescriptor(fieldName)

                                                                        .getType()) });

                } catch (DataException e) {

                        NotificationManager.addError(PluginServices.getText(this, "recovering_recordset"), e);

                }

                for (int row = 0; row < symbolTable.getRowCount(); row++) {

                        if (symbolTable.getFieldValue(row, 1) instanceof FInterval) {

                                theInterval = (IInterval) symbolTable.getFieldValue(row, 1);

                                theSymbol = (ISymbol) symbolTable.getFieldValue(row, 0);

                                theSymbol.setDescription((String) symbolTable.getFieldValue(

                                                row, 2));

                                auxLegend.addSymbol(theInterval, theSymbol);

                        }

                }

                if (auxLegend.isUseDefaultSymbol()) {

                    theSymbol = auxLegend.getDefaultSymbol();

                    auxLegend.addSymbol(theSymbol.getDescription(), theSymbol);

                }

        }

    /**

     * This method initializes panelC

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPnlCenter() {

        if (pnlCenter == null) {

            pnlCenter = new JPanel();

        }

        return pnlCenter;

    }

    /**

     * Listener.

     *

     * @author Vicente Caballero Navarro

     */

    class MyListener implements ActionListener {

       public void actionPerformed(ActionEvent e) {

            // System.out.println("ActionEvent con " + e.getActionCommand());

            //modificar el combobox de valor

            if (e.getActionCommand() == "FIELD_SELECTED") {

                JComboBox cb = (JComboBox) e.getSource();

                String fieldName = (String) cb.getSelectedItem();

                // System.out.println("Nombre del campo: " + fieldName);

                symbolTable.removeAllItems();

                //theLegend.setClassifyingFieldNames(new String[] {fieldName});

                auxLegend.setClassifyingFieldNames(new String[] {fieldName});

            } else if (e.getActionCommand() == "INTERVAL_TYPE") {

                JComboBox cb = (JComboBox) e.getSource();

                //if ((theLegend != null) &&

                if ((auxLegend != null) &&

                    //    (cb.getSelectedIndex() != theLegend.getIntervalType())) {

                        (cb.getSelectedIndex() != auxLegend.getIntervalType())) {

                    //theLegend.setIntervalType(cb.getSelectedIndex());

                    auxLegend.setIntervalType(cb.getSelectedIndex());

                    symbolTable.removeAllItems();

                }

            }

            //A�adir todos los elementos por valor

            if (e.getActionCommand() == "ADD_ALL_VALUES") {

                fillTableValues();

            }

            //A�adir un �nico elemento

            if (e.getActionCommand() == "ADD_VALUE") {

                try {

                    symbolTable.addTableRecord(

                                                        mapContextManager.getSymbolManager().createSymbol(

                                                                        layer.getShapeType()),

                                    new FInterval(0, 0),

                                    "0 - 0");

                } catch (DataException e1) {

                        NotificationManager.addError(PluginServices.getText(this, "could_not_get_shape_type"), e1);

                }

            }

            //Vacia la tabla

            if (e.getActionCommand() == "REMOVE_ALL") {

                symbolTable.removeAllItems();

            }

            //Quitar solo el elemento seleccionado

            if (e.getActionCommand() == "REMOVE") {

                symbolTable.removeSelectedRows();

            }

        }

    }

    public String getDescription() {

        return PluginServices.getText(this,"Muestra_los_elementos_de_la_capa_usando_una_gama_de_colores_en_funcion_del_valor_de_un_determinado_campo_de_atributos") + ".";

    }

    public ImageIcon getIcon() {

        return IconThemeHelper.getImageIcon(

            "legend-overview-vectorial-interval");

    }

    public Class getParentClass() {

        return Quantities.class;

    }

    public String getTitle() {

        return PluginServices.getText(this,"Intervalos");

    }

    public JPanel getPanel() {

        return this;

    }

    public Class getLegendClass() {

        return VectorialIntervalLegend.class;

    }

    private boolean isNumericField(int fieldType) {

                if (fieldType == DataTypes.DOUBLE || fieldType == DataTypes.FLOAT

                                || fieldType == DataTypes.LONG || fieldType == DataTypes.INT) {

                        return true;

                }else{

                        return false;

                }

//            switch (fieldType) {

//                case Types.BIGINT:

//                case Types.DECIMAL:

//                case Types.DOUBLE:

//                case Types.FLOAT:

//                case Types.INTEGER:

//                case Types.NUMERIC:

//                case Types.REAL:

//                case Types.SMALLINT:

//                case Types.TINYINT:

//                        return true;

//                default:

//                        return false;

//                }

        }

        public boolean isSuitableFor(FLayer layer) {

                if (layer instanceof FLyrVect) {

                        FeatureStore sds;

                        try {

                                sds = ((FLyrVect) layer).getFeatureStore();

                                FeatureType featureType=sds.getDefaultFeatureType();

                                Iterator iterator=featureType.iterator();

                                while (iterator.hasNext()) {

                                        FeatureAttributeDescriptor descriptor = (FeatureAttributeDescriptor) iterator.next();

//                                }

//                                String[] fNames = sds.getFieldNames();

//                                for (int i = 0; i < fNames.length; i++) {

                                        if (descriptor.getDataType().isNumeric() ) {

                                                return true;

                                        }

                                }

                        } catch (DataException e) {

                                return false;

                        }

                }

                return false;

        }

}