Application: gvSIG desktop » gvSIG geoprocess

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2012 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 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., 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.geoprocess.algorithm.groupby;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.ArrayList;

import java.util.List;

import javax.swing.BorderFactory;

import javax.swing.ButtonGroup;

import javax.swing.ComboBoxModel;

import javax.swing.DefaultComboBoxModel;

import javax.swing.DefaultListModel;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.ListSelectionModel;

import javax.swing.table.DefaultTableModel;

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.geoprocess.lib.api.GeoProcessLocator;

import org.gvsig.geoprocess.lib.sextante.dataObjects.FlyrVectIVectorLayer;

import org.gvsig.geoprocess.sextante.gui.algorithm.AlgorithmOutputPanel;

import org.gvsig.gui.beans.Messages;

import org.gvsig.timesupport.Instant;

import org.gvsig.tools.dataTypes.DataTypes;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.ObjectAndDescription;

import es.unex.sextante.core.OutputObjectsSet;

import es.unex.sextante.core.ParametersSet;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IVectorLayer;

import es.unex.sextante.gui.algorithm.GeoAlgorithmParametersPanel;

import es.unex.sextante.gui.algorithm.OutputChannelSelectionPanel;

import es.unex.sextante.gui.core.SextanteGUI;

import es.unex.sextante.outputs.Output;

/**

 * Panel for dissolve algorithm

 * @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>

 */

public class GroupByParametersPanel extends GeoAlgorithmParametersPanel implements ActionListener, MouseListener {

        private static final long                serialVersionUID   = 1L;

        private GeoAlgorithm                     m_Algorithm        = null;

        private JButton                          buttonAdd          = null;

        private JButton                          buttonDel          = null;

        private JComboBox                        groupingField      = null;

        private JComboBox                        timeField          = null;

        private JComboBox                        layersCombo        = null;

        private JList                            fieldList          = null;

        private JList                            operationJList     = null;

        private JScrollPane                      jlistScroll1       = null;

        private JScrollPane                      jlistScroll2       = null;

        private AlgorithmOutputPanel             output             = null;

        private String[]                         opList             = null;

        private String[]                         opListLast         = null;

        private String[]                         opListString       = null;

        private String[]                         opListStringLast   = null;

        private final String[]                   columnNames        = { Messages.getText("Field"), Messages.getText("Function") };

        private JTable                           table              = null;

        private JScrollPane                      jtableScroll       = null;

        private JRadioButton                     firstGeom          = null;

        private JRadioButton                     multiGeom          = null;

        private JRadioButton                     spatialFusion      = null;

        private OutputChannelSelectionPanel      outputChannelSelectionPanel;

        private JPanel                           outputPanel;

        public GroupByParametersPanel() {

                super();

        }

    public void init(GeoAlgorithm algorithm) {

            m_Algorithm        = algorithm;

            opList             = new String[]{ "first", "sum", "average", "max", "min"};

            opListLast         = new String[]{ "first", "sum", "average", "max", "min", "last"};

            opListString       = new String[]{ "first"};

            opListStringLast   = new String[]{ "first", "last"};

            initGUI();

    }

        private void initGUI() {

                GridBagLayout gbl = new GridBagLayout();

                this.setLayout(gbl);

                this.setBorder(BorderFactory.createLineBorder(Color.gray));

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.HORIZONTAL;

                gbc.weightx = 1.0;

                gbc.gridx = 0;

                gbc.insets = new Insets(0, 4, 4, 4);

                gbc.gridy = 0;                

                this.add(getComboPanel(GeoProcessLocator.getGeoProcessManager().getTranslation("grouping_layer"), getLayers1Combo()), gbc);

                gbc.gridy = 1;                

                this.add(getComboPanel(GeoProcessLocator.getGeoProcessManager().getTranslation("grouping_field"), getFields1Combo()), gbc);

                gbc.gridy = 2;

                this.add(getComboPanel(GeoProcessLocator.getGeoProcessManager().getTranslation("time_field"), getFields2Combo()), gbc);

                gbc.gridy = 3;

                gbc.fill = GridBagConstraints.BOTH;

                gbc.weighty = 1.0;

                this.add(getTablePanel(), gbc);

                gbc.fill = GridBagConstraints.HORIZONTAL;

                gbc.weighty = 0;

                gbc.gridy = 4;

                this.add(getGeometryPanel(), gbc);

                gbc.gridy = 5;

                this.add(getOutputChannelSelectionPanel(), gbc);

        }

        /**

         * Gets the output panel (SEXTANTE)

         * @return

         */

        private JPanel getOutputChannelSelectionPanel() {

                if(outputPanel == null) {

                        try {

                                outputPanel = new JPanel();

                                outputPanel.setLayout(new BorderLayout());

                                final OutputObjectsSet ooSet = m_Algorithm.getOutputObjects();

                                final Output out = ooSet.getOutput(GroupByAlgorithm.RESULT);

                                outputChannelSelectionPanel = new OutputChannelSelectionPanel(out, m_Algorithm.getParameters());

                                outputPanel.add(new JLabel("GroupBy [Vectorial]                        "), BorderLayout.WEST);

                                outputPanel.add(outputChannelSelectionPanel, BorderLayout.CENTER);

                        } catch (final Exception e) {

                                Sextante.addErrorToLog(e);

                        }

                }

                return outputPanel;

        }

        /**

         * Gets the output panel (DAL)

         * @return

         */

        @SuppressWarnings("unused")

        private AlgorithmOutputPanel getAlgorithmOutputPanel() {

                if(output == null) {

                        output = new AlgorithmOutputPanel();

                }

                return output;

        }

        /**

         * Gets a new JPanel with the text and JComboBox 

         * @param text

         * @param combo

         * @return

         */

        public JPanel getComboPanel(String text, JComboBox combo) {

                JPanel panel = new JPanel();

                GridBagLayout gbl = new GridBagLayout();

                panel.setLayout(gbl);

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.NONE;

                gbc.weightx = 0;

                gbc.gridx = 0;

                gbc.insets = new Insets(0, 2, 0, 5);

                JLabel label = new JLabel(text);

                label.setPreferredSize(new Dimension(180, 18));

                panel.add(label, gbc);

                gbc.fill = GridBagConstraints.HORIZONTAL;

                gbc.weightx = 1.0;

                gbc.gridx = 1;

                gbc.anchor = GridBagConstraints.EAST;

                gbc.insets = new Insets(0, 2, 0, 0);

                panel.add(combo, gbc);

                return panel;

        }

        /**

         * Gets a ComboBox

         * @return

         */

        public JComboBox getFields1Combo() {

                if(groupingField == null) {

                        groupingField = new JComboBox();

                        groupingField.setPreferredSize(new Dimension(0, 18));

                        ComboBoxModel comboModel = new DefaultComboBoxModel(getFieldList().toArray());

                        groupingField.setModel(comboModel);

                        groupingField.addActionListener(this);

                }

                return groupingField;

        }

        /**

         * Gets a ComboBox

         * @return

         */

        public JComboBox getFields2Combo() {

                if(timeField == null) {

                        timeField = new JComboBox();

                        timeField.setPreferredSize(new Dimension(0, 18));

                        ComboBoxModel comboModel = new DefaultComboBoxModel(getTimeFieldList().toArray());

                        timeField.setModel(comboModel);

                        timeField.addActionListener(this);

                }

                return timeField;

        }

        public JPanel getTablePanel() {

                JPanel p = new JPanel();

                p.setLayout(new GridBagLayout());

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.BOTH;

                gbc.weighty = 1.0;

                gbc.weightx = 1.0;

                gbc.gridx = 0;

                p.add(getJList(), gbc);

                gbc.gridx = 2;

                p.add(getJTable(), gbc);

                gbc.gridx = 3;

                p.add(getOperationJList(), gbc);

                gbc.fill = GridBagConstraints.VERTICAL;

                gbc.weightx = 0;

                gbc.gridx = 1;

                p.add(getButtonsPanel(), gbc);

                return p;

        }

        /**

         * Gets a ComboBox

         * @return

         */

        public JComboBox getLayers1Combo() {

                if(layersCombo == null) {

                        layersCombo = new JComboBox();

                        layersCombo.setPreferredSize(new Dimension(0, 18));

                        ComboBoxModel comboModel = new DefaultComboBoxModel(getLayerList());

                        layersCombo.setModel(comboModel);

                        layersCombo.addActionListener(this);

                }

                return layersCombo;

        }

        private JPanel getButtonsPanel() {

                JPanel p = new JPanel();

                p.setLayout(new GridBagLayout());

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.NONE;

                gbc.gridx = 0;

                gbc.gridy = 0;

                p.add(getButtonAdd(), gbc);

                gbc.gridx = 0;

                gbc.gridy = 1;

                p.add(getButtonDel(), gbc);

                return p;

        }

        public JButton getButtonAdd() {

                if(buttonAdd == null) {

                        buttonAdd = new JButton(">>");

                        buttonAdd.setPreferredSize(new Dimension(32, 32));

                        buttonAdd.addActionListener(this);

                }

                return buttonAdd;

        }

        public JButton getButtonDel() {

                if(buttonDel == null) {

                        buttonDel = new JButton("<<");

                        buttonDel.setPreferredSize(new Dimension(32, 32));

                        buttonDel.addActionListener(this);

                }

                return buttonDel;

        }

        public JScrollPane getJTable() {

                if (table == null) {

                        DefaultTableModel model = new DefaultTableModel();

                        model.setColumnIdentifiers(columnNames);

                        table = new JTable(model);

                        table.addMouseListener(this);

                        table.setRowHeight(24);

                        jtableScroll = new JScrollPane(table);

                }

                return jtableScroll;

        }

        public JScrollPane getJList() {

                if (fieldList == null) {

                        fieldList = new JList();

                        fieldList.setModel(new DefaultListModel());

                        jlistScroll1 = new JScrollPane(fieldList);

                        fieldList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

                        fieldList.addMouseListener(this);

                        List<String> list = getFieldList();

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

                                ((DefaultListModel)this.fieldList.getModel()).addElement(list.get(i));

                        }        

                }

                return jlistScroll1;

        }

        private JPanel panelOpList = null;

        public JPanel getOperationJList() {

                if (operationJList == null) {

                        operationJList = new JList();

                        operationJList.setModel(new DefaultListModel());

                        operationJList.setPreferredSize(new Dimension(70, 0));

                        jlistScroll2 = new JScrollPane(operationJList);

                        operationJList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                        operationJList.addMouseListener(this);

                        panelOpList = new JPanel(new GridBagLayout());

                        GridBagConstraints gbc = new GridBagConstraints();

                        gbc.fill = GridBagConstraints.VERTICAL;

                        gbc.weighty = 1;

                        panelOpList.add(operationJList, gbc);

                        panelOpList.setBorder(BorderFactory.createLineBorder(Color.black));

                }

                return panelOpList;

        }

        /**

         * Gets a new JPanel with the text and JComboBox 

         * @param text

         * @param combo

         * @return

         */

        public JPanel getGeometryPanel() {

                ButtonGroup group = new ButtonGroup();

                group.add(getButtonFirstGeom());

                group.add(getButtonMultiGeom());

                group.add(getButtonSpatialFusion());

                JPanel panel = new JPanel();

                String text = GeoProcessLocator.getGeoProcessManager().getTranslation("geom");

                panel.setBorder(BorderFactory.createTitledBorder(text));

                GridBagLayout gbl = new GridBagLayout();

                panel.setLayout(gbl);

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.HORIZONTAL;

                gbc.weightx = 1.0;

                gbc.insets = new Insets(0, 2, 4, 0);

                panel.add(getButtonFirstGeom(), gbc);

                gbc.gridy = 1;

                panel.add(getButtonMultiGeom(), gbc);

                gbc.gridy = 2;

                panel.add(getButtonSpatialFusion(), gbc);

                return panel;

        }

        private JRadioButton getButtonFirstGeom() {

                if(firstGeom == null) {

                        String text = GeoProcessLocator.getGeoProcessManager().getTranslation("first_geom");

                        firstGeom = new JRadioButton(text);

                }

                return firstGeom;

        }

        private JRadioButton getButtonMultiGeom() {

                if(multiGeom == null) {

                        String text = GeoProcessLocator.getGeoProcessManager().getTranslation("multi_geom");

                        multiGeom = new JRadioButton(text);

                }

                return multiGeom;

        }

        private JRadioButton getButtonSpatialFusion() {

                if(spatialFusion == null) {

                        String text = GeoProcessLocator.getGeoProcessManager().getTranslation("spatial_fusion");

                        spatialFusion = new JRadioButton(text);

                }

                return spatialFusion;

        }

        //------------------------------------------------------------

        private void reloadFields() {

                for (int i = ((DefaultTableModel)table.getModel()).getRowCount() - 1; i >= 0 ; i--) {

                        ((DefaultTableModel)table.getModel()).removeRow(i);

                }

                List<String> list = getFieldList();

                groupingField.removeAllItems();

                ((DefaultListModel)this.fieldList.getModel()).clear();

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

                        ((DefaultListModel)this.fieldList.getModel()).addElement(list.get(i));

                        groupingField.addItem(list.get(i));

                }        

                DefaultTableModel model = new DefaultTableModel();

                model.setColumnIdentifiers(columnNames);

                table = new JTable(model);

                table.setRowHeight(24);

                getFields2Combo().removeAllItems();

                List<String> timeFieldList = getTimeFieldList();

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

                        getFields2Combo().addItem(timeFieldList.get(i));

                }

                IVectorLayer layer = getSelectedVectorLayer();

                if(layer.getShapeType() != IVectorLayer.SHAPE_TYPE_POLYGON)

                        getButtonSpatialFusion().setEnabled(false);

                else

                        getButtonSpatialFusion().setEnabled(true);

        }

        /**

         * Gets the selected vector layer in the JComboBox

         * @return

         */

        private IVectorLayer getSelectedVectorLayer() {

                if(layersCombo.getSelectedItem() != null)

                        return (IVectorLayer)((ObjectAndDescription)layersCombo.getSelectedItem()).getObject();

                return null;

        }

        /*

         * (non-Javadoc)

         * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)

         */

        public void actionPerformed(ActionEvent e) {

                if(e.getSource() == getLayers1Combo()) {

                        reloadFields();

                }

                if(e.getSource() == getButtonAdd()) {

                        addRowToTable();

                }

                if(e.getSource() == getButtonDel()) {

                        removeRowTable();

                }

        }

        @Override

        public void assignParameters() {

                try {

                        ParametersSet params = m_Algorithm.getParameters();

                        params.getParameter(GroupByAlgorithm.LAYER_NAME).setParameterValue("GroupBy_Layer");

                        params.getParameter(GroupByAlgorithm.LAYER).setParameterValue(getSelectedVectorLayer());

                        params.getParameter(GroupByAlgorithm.FIELD).setParameterValue((String)getFields1Combo().getSelectedItem());

                        //List<String> fList = getFieldList();

                        String dateField = (String)getFields2Combo().getSelectedItem();

                        /*int dateFieldPosition = -1;

                        if(getFields2Combo().getItemCount() > 0) {

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

                                        if(fList.get(i).equals(dateField))

                                                dateFieldPosition = i;

                                }

                        }*/

                        params.getParameter(GroupByAlgorithm.FIELD_DATE).setParameterValue(dateField);

                        params.getParameter(GroupByAlgorithm.FIELD_LIST).setParameterValue(getFieldStringList());

                        params.getParameter(GroupByAlgorithm.FUNCTION_LIST).setParameterValue(getFunctionStringList());

                        int geom = getButtonFirstGeom().isSelected() ? 0 : getButtonMultiGeom().isSelected() ? 1 : getButtonSpatialFusion().isSelected() ? 2 : -1;

                        params.getParameter(GroupByAlgorithm.GEOM_OPTION).setParameterValue(geom);

                        OutputObjectsSet ooSet = m_Algorithm.getOutputObjects();

                        Output out = ooSet.getOutput(GroupByAlgorithm.RESULT);

                        //Reponer estas l?neas para cambiar el panel de salida y comentar la siguiente

                        //AlgorithmOutputPanel fsp = getAlgorithmOutputPanel();

                        //out.setOutputChannel(new CompositeSourceOutputChannel(fsp.getOutputParameters()));

                 out.setOutputChannel(outputChannelSelectionPanel.getOutputChannel());

                } catch (Exception e) {

                        Sextante.addErrorToLog(e);

        }

        }

        private String getFunctionStringList() {

                if(table != null) {

                        String value = "";

                        for (int i = 0; i < ((DefaultTableModel)table.getModel()).getRowCount(); i++) {

                                Object obj = ((DefaultTableModel)table.getModel()).getValueAt(i, 1);

                                if(i == 0)

                                        value = obj + "";

                                else

                                        value += ";" + obj;

                        }

                        return value;

                }

                return null;

        }

        private String getFieldStringList() {

                if(table != null) {

                        String value = "";

                        for (int i = 0; i < ((DefaultTableModel)table.getModel()).getRowCount(); i++) {

                                Object obj = ((DefaultTableModel)table.getModel()).getValueAt(i, 0);

                                if(obj instanceof String) {

                                        List<String> fList = getFieldList();

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

                                                if(fList.get(j).compareTo((String)obj) == 0) {

                                                        if(value.compareTo("") == 0)

                                                                value = obj + "";

                                                        else

                                                                value += ";" + obj;

                                                }

                                        }

                                }

                        }

                        return value;

                }

                return null;

        }

        @Override

        public void setOutputValue(String arg0, String arg1) {

        }

        @Override

        public void setParameterValue(String arg0, String arg1) {

        }

        ;

        /**

         * Gets the input layer list

         * @return

         */

        private ObjectAndDescription[] getLayerList() {

                IVectorLayer[] layers = SextanteGUI.getInputFactory()

                                        .getVectorLayers(IVectorLayer.SHAPE_TYPE_WRONG);

                ObjectAndDescription[] oad = new ObjectAndDescription[layers.length];

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

                        oad[i] = new ObjectAndDescription(layers[i].getName(), layers[i]);

                return oad;

        }

        /**

         * Gets the field list of the selected layer

         * @return

         */

        public List<String> getFieldList() {

                IVectorLayer layer = getSelectedVectorLayer();

                List<String> data = new ArrayList<String>();

                FeatureStore fs = ((FlyrVectIVectorLayer)layer).getFeatureStore();

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

                        FeatureType ftype;

                        try {

                                ftype = fs.getDefaultFeatureType();

                        } catch (DataException e) {

                                return data;

                        }

                        if(ftype.getAttributeDescriptor(i).getDataType().isNumeric() ||

                           ftype.getAttributeDescriptor(i).getDataType().getType() == DataTypes.STRING)

                        data.add(layer.getFieldName(i)); 

                }

                return data;

        }

        /**

         * Gets the field list of the selected layer of time data type

         * @return

         */

        @SuppressWarnings("unchecked")

        public List<String> getTimeFieldList() {

                IVectorLayer layer = getSelectedVectorLayer();

                List<String> data = new ArrayList<String>();

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

                        Class type = layer.getFieldType(i);

                        if(Instant.class.isAssignableFrom(type))

                                data.add(layer.getFieldName(i));

                }

                return data;

        }

        private void addRowToTable() {

                Object[] values = fieldList.getSelectedValues();

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

                        Object[] obj = new Object[]{values[i], opList[0]};

                        ((DefaultTableModel)table.getModel()).addRow(obj);

                }        

                //Carga la lista de operaciones

                loadOperationInJList(getFieldSelectedInTable());

        }

        private void removeRowTable() {

                int row = table.getSelectedRow();

                if(row >= 0 && row < table.getRowCount()) {

                        ((DefaultTableModel)table.getModel()).removeRow(row);

                        int rowSelected = ((DefaultTableModel)table.getModel()).getRowCount() - 1;

                        if(rowSelected >= 0) {

                                table.setRowSelectionInterval(rowSelected, rowSelected);

                        }

                        loadOperationInJList(getFieldSelectedInTable());

                }

        }

        public void mouseClicked(MouseEvent e) {

                if(e.getSource() == fieldList) {

                        if(e.getClickCount() == 2) {

                                addRowToTable();

                        }

                }

                if(e.getSource() == table) {

                        loadOperationInJList(getFieldSelectedInTable());

                }

                if(e.getSource() == operationJList) {

                        changeFunctionInTable();

                }

         }

        private void changeFunctionInTable() {

                int rowSelected = table.getSelectedRow();

                if(rowSelected < 0) {

                        return;

                }

                String value = (String)operationJList.getSelectedValue();

                ((DefaultTableModel)table.getModel()).setValueAt(value, rowSelected, 1);

        }

        private String getFieldSelectedInTable() {

                if(table.getRowCount() == 0)

                        return null;

                int rowSelected = table.getSelectedRow();

                if(rowSelected < 0) {

                        rowSelected = ((DefaultTableModel)table.getModel()).getRowCount() - 1;

                        table.setRowSelectionInterval(rowSelected, rowSelected);

                }

                return (String)((DefaultTableModel)table.getModel()).getValueAt(rowSelected, 0);

        }

        private void loadOperationInJList(String field) {

                operationJList.setModel(new DefaultListModel());

                DefaultListModel model = (DefaultListModel)operationJList.getModel();

                if(field == null)

                        return;

                if(existsTimeField()) {

                        if(isFieldNumeric(field)) {

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

                                        model.addElement(opListLast[i]);                                

                                }

                        } else {

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

                                        model.addElement(opListStringLast[i]);                                

                                }

                        }                                

                } else {

                        if(isFieldNumeric(field)) {

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

                                        model.addElement(opList[i]);                                

                                }

                        } else {

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

                                        model.addElement(opListString[i]);                                

                                }

                        }        

                }

        }

        public boolean isFieldNumeric(String field) {

                IVectorLayer layer = getSelectedVectorLayer();

                FeatureStore fs = ((FlyrVectIVectorLayer)layer).getFeatureStore();

                FeatureType ftype;

                try {

                        ftype = fs.getDefaultFeatureType();

                        FeatureAttributeDescriptor desc = ftype.getAttributeDescriptor(field);

                        if(desc != null && desc.getDataType().isNumeric())

                                return true;

                } catch (DataException e) {

                        return false;

                }

                return false;

        }

        @SuppressWarnings("unchecked")

        private boolean existsTimeField() {

                IVectorLayer layer = getSelectedVectorLayer();

                if(layer != null ) {

                        boolean existsTimeField = false;

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

                                Class type = layer.getFieldType(i);

                                if(Instant.class.isAssignableFrom(type))

                                        existsTimeField = true;

                        }

                        if(layer.getShapeType() != IVectorLayer.SHAPE_TYPE_POLYGON)

                                getButtonSpatialFusion().setEnabled(false);

                        return existsTimeField;

                }

                return false;

        }

        public void mouseEntered(MouseEvent e) {

        }

        public void mouseExited(MouseEvent e) {

        }

        public void mousePressed(MouseEvent e) {

        }

        public void mouseReleased(MouseEvent e) {

        }

}