Application: gvSIG desktop

/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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 2

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib��ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.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.io.File;

import java.io.IOException;

import java.sql.Types;

import java.text.NumberFormat;

import java.util.ArrayList;

import javax.swing.BorderFactory;

import javax.swing.DefaultComboBoxModel;

import javax.swing.ImageIcon;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import org.apache.log4j.Logger;

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

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

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

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.hardcode.gdbms.engine.data.DataSource;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.cit.gvsig.exceptions.layers.LegendLayerException;

import com.iver.cit.gvsig.fmap.core.SymbologyFactory;

import com.iver.cit.gvsig.fmap.core.styles.IMarkerFillPropertiesStyle;

import com.iver.cit.gvsig.fmap.core.symbols.ISymbol;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.iver.cit.gvsig.fmap.layers.SelectableDataSource;

import com.iver.cit.gvsig.fmap.layers.XMLException;

import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData;

import com.iver.cit.gvsig.fmap.layers.layerOperations.ClassifiableVectorial;

import com.iver.cit.gvsig.fmap.rendering.FInterval;

import com.iver.cit.gvsig.fmap.rendering.IInterval;

import com.iver.cit.gvsig.fmap.rendering.ILegend;

import com.iver.cit.gvsig.fmap.rendering.LegendFactory;

import com.iver.cit.gvsig.fmap.rendering.NullIntervalValue;

import com.iver.cit.gvsig.fmap.rendering.NullUniqueValue;

import com.iver.cit.gvsig.fmap.rendering.VectorialIntervalLegend;

import com.iver.cit.gvsig.fmap.rendering.VectorialUniqueValueLegend;

import com.iver.cit.gvsig.gui.panels.ColorChooserPanel;

import com.iver.cit.gvsig.gui.styling.JComboBoxColorScheme;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class VectorialInterval extends JPanel implements ILegendPanel{

        protected static Logger logger = Logger.getLogger(VectorialInterval.class.getName());

        private GridBagLayoutPanel pnlGeneral = null;

        protected JComboBox cmbField = null;

        protected JTextField txtNumIntervals = null;

        protected ColorChooserPanel colorChooserPanel = null;

        protected ColorChooserPanel colorChooserPanel1 = null;

        protected JCheckBox chkdefaultvalues = null;

        protected JComboBox cmbFieldType = null;

        protected 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 VectorialIntervalLegend auxLegend = null;

        protected SymbolTable symbolTable;

        protected MyListener listener = new MyListener();

        protected JPanel pnlCenter = null;

        protected JPanel optionPanel;

        private JPanel pnlNorth;

        protected JSymbolPreviewButton defaultSymbolPrev;

        private GridBagLayoutPanel defaultSymbolPanel = new GridBagLayoutPanel();

        /**

         * 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_final"),

                                        getColorChooserPanel());

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

                                        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

         */

        protected JComboBox getCmbIntervalTypes() {

                if (cmbFieldType == null) {

                        cmbFieldType = new JComboBox();

                        cmbFieldType.setActionCommand("INTERVAL_TYPE");

                        cmbFieldType.addActionListener(listener);

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

                        cmbFieldType.addItem(PluginServices.getText(this,

                        "natural_intervals"));

                        cmbFieldType.addItem(PluginServices.getText(this,

                        "quantile_intervals"));

                        cmbFieldType.setVisible(true);

                }

                return cmbFieldType;

        }

        /**

         * 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

         */

        protected 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

         */

        protected 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

         */

        protected 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

         */

        protected 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 {

                        FInterval[] arrayIntervalos = calculateIntervals();

                        if (arrayIntervalos == null)

                                return;

                        FInterval 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();

                        //theLegend.setStartColor(startColor);

                        auxLegend.setStartColor(startColor);

                        Color endColor = colorChooserPanel1.getColor();

                        //theLegend.setEndColor(endColor);

                        auxLegend.setEndColor(endColor);

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

                        auxLegend.useDefaultSymbol(false);

                        int symbolType = layer.getShapeType();

                        int numSymbols = 0;

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

                                interval = arrayIntervalos[k];

                                ISymbol theSymbol = SymbologyFactory.createDefaultSymbolByShapeType(

                                                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);

                                System.out.println("addSymbol = " + interval +

                                                " theSymbol = " + theSymbol.getDescription());

                                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

                        System.out.println("Num. Simbolos = " +

                                        auxLegend.getValues().length);

                        symbolTable.fillTableFromSymbolList(auxLegend.getSymbols(),

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

                } catch (ReadDriverException 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 FInterval[] 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 {

                        return auxLegend.calculateIntervals(

                                        //return theLegend.calculateIntervals(

                                        ((AlphanumericData) layer).getRecordset(),

                                        (String) cmbField.getSelectedItem(),

                                        intervalCount,

                                        layer.getShapeType()

                        );

                } catch (ReadDriverException e) {

                        return null;

                }

        }

        public void setData(FLayer layer, ILegend legend) {

                this.layer = (ClassifiableVectorial) layer;

                int shapeType = 0;

                try {

                        shapeType = this.layer.getShapeType();

                } catch (ReadDriverException 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 (VectorialIntervalLegend.class.equals(legend.getClass())) {

                        try {

                                auxLegend = (VectorialIntervalLegend) legend.cloneLegend();

                        } catch (XMLException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        }

                        chkdefaultvalues.setSelected(auxLegend.isUseDefaultSymbol());

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

                        symbolTable.fillTableFromSymbolList(auxLegend.getSymbols(),

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

                        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());

                cmbFieldType.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() {

                DataSource rs = null;

                ArrayList nomFields = null;

                try {

                        rs = ((AlphanumericData) layer).getRecordset();

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

                        rs.start();

                        nomFields = new ArrayList();

                        int type;

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

                                type = rs.getFieldType(i);

                                if (type == Types.NULL) {

                                        continue;

                                }

                                if ((type == Types.INTEGER) ||

                                                (type == Types.DOUBLE) ||

                                                (type == Types.FLOAT) ||

                                                (type == Types.BIGINT)) {

                                        nomFields.add(rs.getFieldName(i).trim());

                                }

                        }

                        rs.stop();

                } catch (ReadDriverException 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());

                try {

                        theLegend = (VectorialIntervalLegend) auxLegend.cloneLegend();

                } catch (XMLException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                }

                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

         */

        protected void fillSymbolListFromTable() {

                ISymbol theSymbol;

                IInterval theInterval = null;

                // Borramos las anteriores listas:

                auxLegend.clear();

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

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

                auxLegend.useDefaultSymbol(chkdefaultvalues.isSelected());

                DataSource rs;

                try {

                        rs = ((AlphanumericData) layer).getRecordset();

                        rs.start();

                        auxLegend.setClassifyingFieldTypes(new int[] {rs.getFieldType(rs.getFieldIndexByName(fieldName))});

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

                        rs.stop();

                } catch (ReadDriverException e) {

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

                }

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

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

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

                                theSymbol.setDescription((String) symbolTable.getFieldValue(

                                                row, 2));

                                auxLegend.addSymbol(new NullIntervalValue(), theSymbol);

                        } else {

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

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

                                theSymbol.setDescription((String) symbolTable.getFieldValue(

                                                row, 2));

                                auxLegend.addSymbol(theInterval, theSymbol);

                        }

                }

                if(chkdefaultvalues.isSelected()){

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

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

                                defaultSymbolPrev.getSymbol().setDescription(description);

                                auxLegend.addSymbol(new NullIntervalValue(), defaultSymbolPrev.getSymbol());

                        }

                }

        }

        /**

         * 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") {                                

                                fieldSelectedActionPerformed((JComboBox) e.getSource());

                        } 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(

                                                        SymbologyFactory.createDefaultSymbolByShapeType(layer.getShapeType()),

                                                        new FInterval(0, 0),"0 - 0");

                                } catch (ReadDriverException 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();

                        }

                }

        }

        protected void fieldSelectedActionPerformed(JComboBox cb){                

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

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

                symbolTable.removeAllItems();

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

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

        }

        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 new ImageIcon(this.getClass().getClassLoader().

                                getResource("images/Intervalos.png"));

        }

        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) {

                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) {

                        SelectableDataSource sds;

                        try {

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

                                String[] fNames = sds.getFieldNames();

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

                                        if (isNumericField(sds.getFieldType(i))) {

                                                return true;

                                        }

                                }

                        } catch (ReadDriverException e) {

                                return false;

                        }

                }

                return false;

        }

}