Application: gvSIG desktop

/*

 * Created on 22-jun-2005

 *

 * 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 org.gvsig.datalocator.gui;

import java.awt.FlowLayout;

import java.awt.event.ItemListener;

import java.util.Comparator;

import java.util.Date;

import java.util.TreeSet;

import java.util.Vector;

import java.util.prefs.Preferences;

import javax.swing.DefaultComboBoxModel;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JDialog;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.ui.mdiManager.IWindow;

import org.gvsig.andami.ui.mdiManager.IWindowListener;

import org.gvsig.andami.ui.mdiManager.SingletonWindow;

import org.gvsig.andami.ui.mdiManager.WindowInfo;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.datalocator.DataLocatorExtension;

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

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

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

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

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

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

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

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.mapcontext.MapContext;

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

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

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

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

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

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

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

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

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

import org.gvsig.fmap.mapcontext.rendering.strategies.SelectedZoomVisitor;

import org.gvsig.tools.dispose.DisposableIterator;

import org.gvsig.tools.dispose.DisposeUtils;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.evaluator.EvaluatorData;

import org.gvsig.tools.evaluator.EvaluatorException;

import org.gvsig.tools.evaluator.EvaluatorFieldsInfo;

/**

 * @author jmorell

 */

public class DataSelectionPanel extends JPanel implements IWindow, IWindowListener, SingletonWindow {

        private static final long serialVersionUID = 1L;

        private static final Logger logger =

        LoggerFactory.getLogger(DataSelectionPanel.class);

    private JComboBox layerComboBox = null;

        private JLabel jLabel = null; 

        private JLabel jLabel1 = null; 

        private JComboBox fieldValueComboBox = null;

        private JLabel jLabel2 = null;  

        private JComboBox fieldNameComboBox = null;

    private WindowInfo viewInfo = null;

        private JButton jButton = null;

        private JButton jButton1 = null;

        private FLayer layerToZoom = null;

        private int fieldToZoomIndex = 0;

        private Object itemToZoom = null;

        private MapContext mapContext = null;

        private Preferences prefUsuario = null;

        private Vector<LayersListener> layersListenerList = new Vector<LayersListener>();

    private Vector<FLayer> vectorialLayers = null;

        private JCheckBox jChkBoxOpenFirstTime = null;

        private JPanel jPanelButtons = null;

        /**

         * This method initializes

         *

         */

        public DataSelectionPanel(MapContext mapContext) {

                super();

                this.mapContext = mapContext;

                prefUsuario = Preferences.userRoot();

                initializeVectorialLayers();

        initializeLayerToZoom();

                initializeFieldToZoomIndex();

        initialize();

        int userOpen = prefUsuario.getInt("gvSIG.DataLocator.open_first_time", -1);

        if (userOpen == 1)

                getJChkBoxOpenFirstTime().setSelected(true);

        }

    private void initializeVectorialLayers() {

            unregisterLayersListener();

        vectorialLayers = new Vector<FLayer>();

        LayersIterator iter = DataLocatorExtension.newValidLayersIterator(mapContext.getLayers());

        while (iter.hasNext()) {

                vectorialLayers.add(iter.nextLayer());

        }

        registerLayersListener();

    }

        private void initializeLayerToZoom() {

                String layerName = prefUsuario.get("LAYERNAME_FOR_DATA_LOCATION", "");

        if (layerName.equals("")) layerToZoom = (FLayer)vectorialLayers.get(0);

        boolean layerFound = false;

        for (int i=0;i<vectorialLayers.size();i++) {

            if (((FLayer)vectorialLayers.get(i)).getName().equals(layerName)) {

                layerFound = true;

                layerToZoom = (FLayer)vectorialLayers.get(i);

                break;

            }

        }

        if (!layerFound) layerToZoom = (FLayer)vectorialLayers.get(0);

        prefUsuario.put("LAYERNAME_FOR_DATA_LOCATION", layerToZoom.getName());

        }

        private void initializeFieldToZoomIndex() {

        fieldToZoomIndex = prefUsuario.getInt("FIELDINDEX_FOR_DATA_LOCATION", 0);

                FLyrVect lyr = (FLyrVect)layerToZoom;

                FeatureStore featureStore;

        try {

            featureStore = lyr.getFeatureStore();

            if (fieldToZoomIndex > (featureStore.getDefaultFeatureType().size()-1)) {

                    fieldToZoomIndex = 0;

            } else if (featureStore.getDefaultFeatureType().size() == 0) {

                    fieldToZoomIndex = -1;

            }

        } catch (DataException e) {

                        fieldToZoomIndex = -1;

            e.printStackTrace();

                }

        }

        /**

         * This method initializes this

         *

         * @return void

         */

        private void initialize() {

        jLabel2 = new JLabel();

        jLabel1 = new JLabel();

        jLabel = new JLabel();

        this.setLayout(null);

        this.setSize(350, 161);

        jLabel.setBounds(6, 6, 80, 23);

        jLabel.setText(PluginServices.getText(this,"Capa") + ":");

        jLabel1.setBounds(6, 34, 80, 23);

        jLabel1.setText(PluginServices.getText(this,"Campo") + ":");

        jLabel2.setBounds(6, 61, 80, 23);

        jLabel2.setText(PluginServices.getText(this,"Valor") + ":");

        this.add(getJComboBox(), null);

        this.add(jLabel, null);

        this.add(jLabel1, null);

        this.add(getJComboBox1(), null);

        this.add(jLabel2, null);

        this.add(getJComboBox2(), null);

        jPanelButtons = new JPanel();

        FlowLayout flowLayor = new FlowLayout(FlowLayout.RIGHT);

        flowLayor.setHgap(5);

        jPanelButtons.setLayout(flowLayor);

        jPanelButtons.setBounds(15,121,335,35);

        jPanelButtons.add(getJButton(), null);

        jPanelButtons.add(getJButton1(), null);

        this.add(jPanelButtons);

        this.add(getJChkBoxOpenFirstTime(), null);

        }

        private void registerLayersListener() {

                int i,j;

                FLayer layer;

                LayersListener listener;

                boolean found;

                for (i=0;i< vectorialLayers.size();i++) {

                        found = false;

                        layer = ((FLayer)vectorialLayers.get(i));

                        for (j=0;j < layersListenerList.size(); j++) {

                                listener = (LayersListener)layersListenerList.get(j);

                                if ( layer.getParentLayer() == listener.getLayerCollection()) {

                                        found = true;

                                        break;

                                }

                        }

                        if (!found) {

                                listener = new LayersListener(layer.getParentLayer());

                                layer.getParentLayer().addLayerCollectionListener(listener);

                                layersListenerList.add(listener);

                        }

                }

        }

        private void unregisterLayersListener() {

                int i;

                LayersListener listener;

                for (i=0;i<layersListenerList.size();i++) {

                        listener = (LayersListener)layersListenerList.get(i);

                        listener.getLayerCollection().removeLayerCollectionListener(listener);

                }

        }

        private String[] getLayerNames() {

                String[] layerNames = new String[vectorialLayers.size()];

            for (int i=0;i<vectorialLayers.size();i++) {

                layerNames[i] = ((FLayer)vectorialLayers.get(i)).getName();

            }

            return layerNames;

        }

        private String[] getFieldNames() {

                FLyrVect lyr = (FLyrVect)layerToZoom;

                FeatureStore featureStore;

        String[] fieldNames = null;

                try {

            featureStore = lyr.getFeatureStore();

                        fieldNames = new String[featureStore.getDefaultFeatureType().size()];

                        for (int i = 0; i < featureStore.getDefaultFeatureType().size(); i++) {

                                fieldNames[i] = ((FeatureAttributeDescriptor)featureStore.getDefaultFeatureType().get(i)).getName();

                        }

        } catch (DataException e) {

                        e.printStackTrace();

                }

                return fieldNames;

        }

        private Object[] getNewValues() {

                FLyrVect lyr = (FLyrVect)layerToZoom;

                FeatureStore featureStore;

                Object[] newValues = null;

                if (fieldToZoomIndex < 0)

                        return null;

                FeatureSet set = null;

                DisposableIterator features = null;

                try {

                        featureStore = lyr.getFeatureStore();

//                String sql = "select " + ((FeatureAttributeDescriptor)featureStore.getDefaultFeatureType().get(fieldToZoomIndex)).getName() + " from " + featureStore.getName() + " where " + featureStore.getFieldName(fieldToZoomIndex) + " is not null;";

                        FeatureQuery query = featureStore.createFeatureQuery();

                        String field =

                                        ((FeatureAttributeDescriptor) featureStore.getDefaultFeatureType()

                                                        .get(fieldToZoomIndex)).getName();

                        Evaluator myEvaluator = new MyEvaluator(field);

                        query.setFilter(myEvaluator);

                        query.setAttributeNames(new String[] { field });

                        set = featureStore.getFeatureSet(query);

                        // ds = ds.getDataSourceFactory().executeSQL(sql,

                        // DataSourceFactory.AUTOMATIC_OPENING);

                        // Quitar los nombres repetidos y ordenarlos

                        TreeSet<Object> treeSet =

                                        new TreeSet<Object>(new Comparator<Object>() {

                                                public int compare(Object o1, Object o2) {

                                                        if (o1 instanceof Number && o2 instanceof Number) {

                                                                if (((Number) o1).doubleValue() < ((Number) o2).doubleValue())

                                                                        return -1;

                                                                if (((Number) o1).doubleValue() > ((Number) o2).doubleValue())

                                                                        return 1;

                                                        } else if (o1 instanceof String

                                                                        && o2 instanceof String) {

                                                                return ((String) o1).compareTo((String) o2);

                                                        } else if (o1 instanceof Date && o2 instanceof Date) {

                                                                return ((Date) o1).compareTo((Date) o2);

                                                        }

                                                        return 0;

                                }

                                        });

                        features = set.iterator();

                        while (features.hasNext()) {

                                Feature feature = (Feature) features.next();

                                Object obj = feature.get(0);

                                treeSet.add(obj);

                        }

                        newValues = (Object[]) treeSet.toArray(new Object[0]);

                } catch (DataException e) {

                        e.printStackTrace();

                } finally {

                        if (features != null) {

                                features.dispose();

                        }

                        if (set != null) {

                                set.dispose();

                        }

                }

                return newValues;

        }

        private class LayersListener implements LayerCollectionListener {

                private LayerCollection theLayerCollection;

            public LayersListener(FLayers layers){

                    theLayerCollection = layers;

            }

            public LayerCollection getLayerCollection() {

                    return theLayerCollection;

            }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerAdded(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void layerAdded(LayerCollectionEvent e) {

            initializeVectorialLayers();

            ((ChangeLayerToZoomItemListener)layerComboBox.getItemListeners()[0]).setLayers(vectorialLayers);

            layerComboBox.removeAllItems();

                    DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(getLayerNames());

                    layerComboBox.setModel(defaultModel);

                        layerComboBox.setSelectedItem(layerToZoom.getName());

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerRemoved(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void layerRemoved(LayerCollectionEvent e) {

            initializeVectorialLayers();

            ((ChangeLayerToZoomItemListener)layerComboBox.getItemListeners()[0]).setLayers(vectorialLayers);

                    if (vectorialLayers.size()>0) {

                    layerComboBox.removeAllItems();

                                String[] layerNames = new String[vectorialLayers.size()];

                            boolean currentLayerRemoved = true;

                                for (int i=0;i<vectorialLayers.size();i++) {

                                layerNames[i] = ((FLayer)vectorialLayers.get(i)).getName();

                                if (layerToZoom.getName().equals(layerNames[i])) currentLayerRemoved = false;

                            }

                            DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(layerNames);

                            layerComboBox.setModel(defaultModel);

                            if (currentLayerRemoved) {

                                layerToZoom = ((FLayer)vectorialLayers.get(0));

                                    defaultModel = new DefaultComboBoxModel(getFieldNames());

                                fieldValueComboBox.setModel(defaultModel);

                                fieldToZoomIndex = 0;

                                fieldValueComboBox.setSelectedIndex(fieldToZoomIndex);

                                Object[] values =getNewValues();

                                    defaultModel = new DefaultComboBoxModel(values);

                                    fieldNameComboBox.setModel(defaultModel);

                                    if (values != null) {

                                            itemToZoom = getNewValues()[0];

                                            fieldNameComboBox.setSelectedItem(itemToZoom);

                                    }else {

                                            itemToZoom = null;

                                    }

                            }

                            layerComboBox.setSelectedItem(layerToZoom.getName());

                    }else {

                    if (PluginServices.getMainFrame() == null)

                            ((JDialog) (getParent().getParent().getParent().getParent())).dispose();

                    else

                            PluginServices.getMDIManager().closeWindow(DataSelectionPanel.this);

                    }

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerMoved(com.iver.cit.gvsig.fmap.layers.LayerPositionEvent)

         */

        public void layerMoved(LayerPositionEvent e) {

            // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerAdding(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void layerAdding(LayerCollectionEvent e) throws CancelationException {

            // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerMoving(com.iver.cit.gvsig.fmap.layers.LayerPositionEvent)

         */

        public void layerMoving(LayerPositionEvent e) throws CancelationException {

            // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerRemoving(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void layerRemoving(LayerCollectionEvent e) throws CancelationException {

            // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#activationChanged(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void activationChanged(LayerCollectionEvent e) throws CancelationException {

            // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#visibilityChanged(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

         */

        public void visibilityChanged(LayerCollectionEvent e) throws CancelationException {

            // TODO Auto-generated method stub

        }

        }

    /* (non-Javadoc)

     * @see com.iver.andami.ui.mdiManager.View#getViewInfo()

     */

    public WindowInfo getWindowInfo() {

        if (viewInfo == null) {

            viewInfo=new WindowInfo(WindowInfo.MODELESSDIALOG | WindowInfo.PALETTE);

            viewInfo.setTitle(PluginServices.getText(this,"Localizador_por_atributo"));

            viewInfo.setHeight(getPreferredSize().height);

            viewInfo.setWidth(getPreferredSize().width);

        }

        return viewInfo;

    }

        /**

         * This method initializes jComboBox

         *

         * @return javax.swing.JComboBox

         */

        private JComboBox getJComboBox() {

                if (layerComboBox == null) {

                        layerComboBox = new JComboBox();

            DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(getLayerNames());

            layerComboBox.setModel(defaultModel);

                        layerComboBox.setBounds(90, 6, 250, 23);

                        layerComboBox.setSelectedItem(layerToZoom.getName());

                        ChangeLayerToZoomItemListener changeLayerToZoomItemListener = new ChangeLayerToZoomItemListener(vectorialLayers);

                        layerComboBox.addItemListener(changeLayerToZoomItemListener);

                }

                return layerComboBox;

        }

        private class ChangeLayerToZoomItemListener implements ItemListener {

            private Vector<FLayer> layers;

            public ChangeLayerToZoomItemListener(Vector<FLayer> layers) {

                this.layers = layers;

            }

                public void itemStateChanged(java.awt.event.ItemEvent e) {

                    if (layerComboBox.getItemCount()>0) {

                for (int i=0;i<layers.size();i++) {

                    if (((FLayer)layers.get(i)).getName().equals((String)layerComboBox.getSelectedItem())) {

                        layerToZoom = (FLayer)layers.get(i);

                        break;

                    }

                }

                            fieldToZoomIndex = 0;

                                prefUsuario.put("LAYERNAME_FOR_DATA_LOCATION", (String)layerComboBox.getSelectedItem());

                        DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(getFieldNames());

                        fieldValueComboBox.setModel(defaultModel);

                        Object[] values =getNewValues();

                        defaultModel = new DefaultComboBoxModel(values);

                            fieldNameComboBox.setModel(defaultModel);

                            if ( values != null) {

                                    fieldNameComboBox.setSelectedIndex(0);

                                    itemToZoom = values[0];

                            } else {

                                    itemToZoom = null;

                            }

                    }

                }

        /**

         * @param layers The layers to set.

         */

        public void setLayers(Vector<FLayer> layers) {

            this.layers = layers;

        }

        }

        /**

         * This method initializes jComboBox1

         *

         * @return javax.swing.JComboBox

         */

        private JComboBox getJComboBox1() {

                if (fieldValueComboBox == null) {

                        fieldValueComboBox = new JComboBox();

            DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(getFieldNames());

            fieldValueComboBox.setModel(defaultModel);

                        fieldValueComboBox.setBounds(90, 34, 250, 23);

                        fieldValueComboBox.setSelectedIndex(fieldToZoomIndex);

                        ChangeFieldItemListener changeFieldItemListener = new ChangeFieldItemListener(vectorialLayers);

                        fieldValueComboBox.addItemListener(changeFieldItemListener);

                }

                return fieldValueComboBox;

        }

        private class ChangeFieldItemListener implements ItemListener {

                public ChangeFieldItemListener(Vector<FLayer> layers) {

                }

                public void itemStateChanged(java.awt.event.ItemEvent itemEvent) {

                        String fieldToZoom = ((String)fieldValueComboBox.getSelectedItem());

                        FLyrVect lyr = (FLyrVect)layerToZoom;

                        FeatureStore featureStore;

                        FeatureSet set = null;

                        DisposableIterator features = null;

                        try {

                                featureStore = lyr.getFeatureStore();                                

                                prefUsuario.putInt("FIELDINDEX_FOR_DATA_LOCATION", fieldToZoomIndex);

                                //Quitar los nombres repetidos y ordenarlos

                                TreeSet<Object> treeSet = new TreeSet<Object>(new Comparator<Object>() {

                                        public int compare(Object o1, Object o2) {

                                                if (o1 instanceof Number && o2 instanceof Number){

                                                        if (((Number)o1).doubleValue()<((Number)o2).doubleValue())

                                                                return -1;

                                                        if (((Number)o1).doubleValue()>((Number)o2).doubleValue())

                                                                return 1;

                                                }else if (o1 instanceof String && o2 instanceof String){

                                                        return ((String)o1).compareTo((String)o2);

                                                }else if (o1 instanceof Date && o2 instanceof Date){

                                                        return ((Date)o1).compareTo((Date)o2);

                                                }

                                                return 0;

                                        }

                                });

                                Evaluator myEvaluator = new MyEvaluator(fieldToZoom);

                                FeatureQuery query = featureStore.createFeatureQuery();

                                query.setFilter(myEvaluator);        

                                set = featureStore.getFeatureSet(query);

                                features = set.fastIterator();

                                int index = set.getDefaultFeatureType().getAttributeDescriptor(fieldToZoom).getIndex();

                                while (features.hasNext()) {

                                        Feature feature = (Feature) features.next();                

                                        treeSet.add(feature.get(index));

                                }

                                Object[] newValues = (Object[])treeSet.toArray(new Object[0]);

                                DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(newValues);

                                fieldNameComboBox.setModel(defaultModel);

                                if (newValues.length>0) fieldNameComboBox.setSelectedIndex(0);

                                if (newValues.length>0) {

                                        itemToZoom = newValues[0];

                                } else {

                                        itemToZoom = null;

                                }

                        } catch (DataException e) {

                                e.printStackTrace();

                        } finally {

                                if (features != null) {

                                        features.dispose();

                                }

                                if (set != null) {

                                        set.dispose();

                                }

                        }

                }

        }

        /**

         * This method initializes jComboBox2

         *

         * @return javax.swing.JComboBox

         */

        private JComboBox getJComboBox2() {

                if (fieldNameComboBox == null) {

                        fieldNameComboBox = new JComboBox();

            DefaultComboBoxModel defaultModel = new DefaultComboBoxModel(getNewValues());

            fieldNameComboBox.setModel(defaultModel);

                        fieldNameComboBox.setSelectedIndex(-1);

                        fieldNameComboBox.setBounds(90, 61, 250, 23);

                        ChangeItemToZoomItemListener changeItemToZoomItemListener = new ChangeItemToZoomItemListener(vectorialLayers);

                        fieldNameComboBox.addItemListener(changeItemToZoomItemListener);

                }

                return fieldNameComboBox;

        }

        private class ChangeItemToZoomItemListener implements ItemListener {

            private Vector<FLayer> layers;

            public ChangeItemToZoomItemListener(Vector<FLayer> layers) {

                this.layers = layers;

            }

                public void itemStateChanged(java.awt.event.ItemEvent e) {

            for (int i=0;i<layers.size();i++) {

                if (((FLayer)layers.get(i)).getName().equals((String)layerComboBox.getSelectedItem())) {

                    layerToZoom = (FLayer)layers.get(i);

                    break;

                }

            }

                        itemToZoom = ((Object)fieldNameComboBox.getSelectedItem());

                }

        }

        /**

         * This method initializes jButton

         *

         * @return javax.swing.JButton

         */

        private JButton getJButton() {

                if (jButton == null) {

                        jButton = new JButton();

                        //jButton.setBounds(8, 121, 128, 23);

                        jButton.setText(PluginServices.getText(this,"Zoom"));

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

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

                                        if (layerToZoom == null || fieldToZoomIndex < 0 || itemToZoom == null)

                                                return;

                                    if (fieldNameComboBox.getSelectedIndex()!=-1) {

                                                FLyrVect lyr = (FLyrVect)layerToZoom;

                                                FeatureStore featureStore;

                                                FeatureSet featureSet = null;

                                                DisposableIterator features = null;

                                                try {

                                        featureStore = lyr.getFeatureStore();

                                                        FeatureSelection selection = (FeatureSelection)featureStore.createFeatureSelection();

                                                        featureSet = featureStore.getFeatureSet();

                                                        features = featureSet.fastIterator();

                                                        String fieldToZoom = ((String)fieldValueComboBox.getSelectedItem());

                                                    int index = featureSet.getDefaultFeatureType().getAttributeDescriptor(fieldToZoom).getIndex();

                                                        while (features.hasNext()) {

                                                                Feature feature = (Feature) features.next();

                                                                if (itemToZoom.equals(feature.get(index))){

                                                                        selection.select(feature);

                                                                }

                                                        }

                                                        // featureStore.setSelection(selection);

                                                        SelectedZoomVisitor visitor = new SelectedZoomVisitor();

                                selection.accept(visitor);

                                Envelope env_data = visitor.getSelectBound();

                                if (lyr.getCoordTrans() != null) {

                                    env_data = env_data.convert(lyr.getCoordTrans());

                                }

                                                        mapContext.getViewPort().setEnvelope(env_data);

                                    } catch (Exception e1) {

                                        logger.debug("While doing zoom: " + e1.getMessage(), e1);

                                        ApplicationLocator.getManager().message(

                                            "While doing zoom: " + e1.getMessage(),

                                            JOptionPane.ERROR_MESSAGE);

                                                } finally {

                                                        DisposeUtils.dispose(featureSet);

                                                        DisposeUtils.dispose(features);

                                                }

                    } else if (itemToZoom == null) {

                        logger.debug("Localizador por atributo: El campo valor debe tener elementos no nulos para hacer el Zoom.");

                    } else {

                        logger.debug("Localizador por atributo: El campo valor debe estar inicializado antes de hacer Zoom.");

                                    }

                                }

                        });

                }

                return jButton;

        }

        /**

         * This method initializes jButton1

         *

         * @return javax.swing.JButton

         */

        private JButton getJButton1() {

                if (jButton1 == null) {

                        jButton1 = new JButton();

                        //jButton1.setBounds(141, 121, 128, 23);

                        jButton1.setText(PluginServices.getText(this,"Salir"));

                        jButton1.addActionListener(new java.awt.event.ActionListener() {

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

                            if (PluginServices.getMainFrame() == null)

                                    ((JDialog) (getParent().getParent().getParent().getParent())).dispose();

                            else

                                    PluginServices.getMDIManager().closeWindow(DataSelectionPanel.this);

                                }

                        });

                }

                return jButton1;

        }

    /* (non-Javadoc)

     * @see com.iver.andami.ui.mdiManager.ViewListener#viewActivated()

     */

    public void windowActivated() {

        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)

     * @see com.iver.andami.ui.mdiManager.ViewListener#viewClosed()

     */

    public void windowClosed() {

                unregisterLayersListener();

                // Guardamos la posici?n en las preferencias del usuario.

                WindowInfo vi = PluginServices.getMDIManager().getWindowInfo(this);

                prefUsuario.putInt("gvSIG.DataLocator.x", vi.getX());

                prefUsuario.putInt("gvSIG.DataLocator.y", vi.getY());

                prefUsuario.putInt("gvSIG.DataLocator.w", vi.getWidth());

                prefUsuario.putInt("gvSIG.DataLocator.h", vi.getHeight());

                vi.setClosed(true);

    }

    /* (non-Javadoc)

     * @see com.iver.andami.ui.mdiManager.SingletonView#getViewModel()

     */

    public Object getWindowModel() {

        // Debe devolver una cadena. Mirar Console del CorePlugin

        return "DataSelectionPanel";

    }

        /**

         * This method initializes jChkBoxOpenFirstTime

         *

         * @return javax.swing.JCheckBox

         */

        private JCheckBox getJChkBoxOpenFirstTime() {

                if (jChkBoxOpenFirstTime == null) {

                        jChkBoxOpenFirstTime = new JCheckBox();

                        jChkBoxOpenFirstTime.setBounds(new java.awt.Rectangle(90,89,179,23));

                        jChkBoxOpenFirstTime.setText(PluginServices.getText(this, "open_first_time"));

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

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

                                        System.out.println("actionPerformed()"); // TODO Auto-generated Event stub actionPerformed()

                                        if (jChkBoxOpenFirstTime.isSelected())

                                        {

                                                prefUsuario.putInt("gvSIG.DataLocator.open_first_time",1);

                                        }

                                        else

                                        {

                                                prefUsuario.putInt("gvSIG.DataLocator.open_first_time",0);

                                        }

                                }

                        });

                }

                return jChkBoxOpenFirstTime;

        }

        public Object getWindowProfile() {

                return WindowInfo.TOOL_PROFILE;

        }

        class MyEvaluator implements Evaluator{

                private String name=null;

                private EvaluatorFieldsInfo info = null;

                public MyEvaluator(String name){

                        this.name=name;

                        info = new EvaluatorFieldsInfo();

                        this.info.addFieldValue(name);

                }

                public Object evaluate(EvaluatorData data)

                                throws EvaluatorException {

                        Feature feature = (Feature) data.getContextValue("feature");

                        if (feature.get(name)!=null)

                                return new Boolean(true);

                        return new Boolean(false);

                }

                public String getSQL() {

                        return name + " is not null";

                }

                public String getDescription() {

                        return "Evaluates if a field is not null";

                }

                public EvaluatorFieldsInfo getFieldsInfo() {

                        return this.info;

                }

                public String getName() {

                        return this.getClass().getName();

                }

    }

}  //  @jve:decl-index=0:visual-constraint="10,10"