Application: gvSIG desktop

package com.iver.cit.gvsig.project.documents.table.gui;

import java.awt.BorderLayout;

import java.awt.Component;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import javax.swing.BoxLayout;

import javax.swing.ButtonGroup;

import javax.swing.JFileChooser;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollPane;

import javax.swing.JTabbedPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import org.apache.bsf.BSFException;

import org.apache.bsf.BSFManager;

import org.gvsig.gui.beans.AcceptCancelPanel;

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

import bsh.EvalError;

import com.hardcode.gdbms.engine.data.driver.DriverException;

import com.iver.andami.PluginServices;

import com.iver.andami.ui.mdiManager.IWindow;

import com.iver.andami.ui.mdiManager.WindowInfo;

import com.iver.cit.gvsig.ExpresionFieldExtension;

import com.iver.cit.gvsig.fmap.drivers.DriverIOException;

import com.iver.cit.gvsig.fmap.drivers.FieldDescription;

import com.iver.cit.gvsig.fmap.edition.IEditableSource;

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

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

import com.iver.cit.gvsig.project.documents.table.GraphicOperator;

import com.iver.cit.gvsig.project.documents.table.IOperator;

import com.iver.cit.gvsig.project.documents.table.Index;

import com.iver.cit.gvsig.project.documents.table.operators.Field;

import com.iver.utiles.GenericFileFilter;

import com.iver.utiles.extensionPoints.ExtensionPoint;

import com.iver.utiles.extensionPoints.ExtensionPoints;

import com.iver.utiles.extensionPoints.ExtensionPointsSingleton;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class EvalExpresionDialog extends JPanel implements IWindow {

    private JPanel pNorth = null;

    private JPanel pCentral = null;

    private JScrollPane jScrollPane = null;

    private JTextArea txtExp = null;

    private AcceptCancelPanel acceptCancel;

    private Table table;

    private FLyrVect lv;

    private JLabel lblColumn = null;

    private JPanel pNorthEast = null;

    private JPanel pNorthCenter = null;

    private JPanel pNorthWest = null;

    private JScrollPane jScrollPane1 = null;

    private JList listFields = null;

    private JRadioButton rbNumber = null;

    private JRadioButton rbString = null;

    private JRadioButton rbDate = null;

    private JScrollPane jScrollPane2 = null;

    private JList listCommand = null;

    //private FieldDescription fieldDescriptor = null;

    //private FieldDescription[] fieldDescriptors = null;

    //private int selectedIndex = -1;

    private BSFManager interpreter = null; // Construct an interpreter

    private Index indexRow = null;

    private SelectableDataSource sds = null;

    private EvalExpresion evalExpresion=null;

    private IEditableSource ies=null;

    private static ArrayList operators=new ArrayList();

    public EvalExpresionDialog(Table table,BSFManager interpreter) {

        super();

        this.interpreter=interpreter;

        this.table = table;

        initialize();

    }

    /**

     * Evaluate operators.

     *

     * @param interpreter

     * @throws BSFException

     *

     * @throws EvalError

     */

    private void evalOperators(BSFManager interpreter) throws BSFException {

        //                 Evaluar las expresiones que aporta cada Operator.

        long t1=System.currentTimeMillis();

            //int type=getType();

        ExtensionPoints extensionPoints = ExtensionPointsSingleton.getInstance();

        ExtensionPoint extensionPoint =(ExtensionPoint)extensionPoints.get("ColumnOperators");

        Iterator iterator = extensionPoint.keySet().iterator();

        while (iterator.hasNext()) {

            try {

                IOperator operator = (IOperator)extensionPoint.create((String)iterator.next());

                operator.eval(interpreter);

                operators.add(operator);

            } catch (InstantiationException e) {

                e.printStackTrace();

            } catch (IllegalAccessException e) {

                e.printStackTrace();

            } catch (ClassCastException e) {

                e.printStackTrace();

            }

        }

//        Operators operatos=new Operators();

//        operatos.eval(interpreter);

        long t2=System.currentTimeMillis();

        System.out.println("Tiempo en evaluar y crear del extension point = "+(t2-t1) );

        //refreshOperators(IOperator.NUMBER);

        long t3=System.currentTimeMillis();

        System.out.println("Tiempo en a?adir los operadores correctos = "+(t3-t2) );

    }

    /**

     * This method initializes this

     */

    private void initialize() {

            try {

                if (operators.isEmpty()) {

                        evalOperators(interpreter);

                        }

                evalExpresions();

        } catch (BSFException e) {

                        e.printStackTrace();

                }

            evalExpresion=new EvalExpresion();

            evalExpresion.setTable(table);

            lv = (FLyrVect) table.getModel().getAssociatedTable();

        ButtonGroup bg = new ButtonGroup();

        bg.add(getRbNumber());

        bg.add(getRbString());

        bg.add(getRbDate());

        this.setLayout(new BorderLayout());

        this.setSize(549, 372);

        this.add(getTabPrincipal(), java.awt.BorderLayout.CENTER);

        this.add(getAcceptCancel(), java.awt.BorderLayout.SOUTH);

    }

    /**

     * This method initializes pCentral

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPNorth() {

        if (pNorth == null) {

            pNorth = new JPanel();

            pNorth.setLayout(new BorderLayout());

            pNorth.add(getPNorthEast(), java.awt.BorderLayout.EAST);

            pNorth.add(getPNorthCenter(), java.awt.BorderLayout.CENTER);

            pNorth.add(getPNorthWest(), java.awt.BorderLayout.WEST);

        }

        return pNorth;

    }

    /**

     * This method initializes pNorth

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPCentral() {

        if (pCentral == null) {

            pCentral = new JPanel();

            pCentral.setBorder(javax.swing.BorderFactory.createTitledBorder(

                    null, PluginServices.getText(this,"expresion"),

                    javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION,

                    javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

            lblColumn = new JLabel();

            pCentral.add(lblColumn, null);

            pCentral.add(getJScrollPane(), null);

            lblColumn.setText(PluginServices.getText(this, "column") + " : " +

                evalExpresion.getFieldDescriptorSelected().getFieldAlias());

            pCentral.add(getBClear(), null);

        }

        return pCentral;

    }

    /**

     * This method initializes pSouth

     *

     * @return javax.swing.JPanel

     */

    private AcceptCancelPanel getAcceptCancel() {

        if (this.acceptCancel == null) {

            this.acceptCancel = new AcceptCancelPanel(new java.awt.event.ActionListener() {

                        public void actionPerformed(

                            java.awt.event.ActionEvent e) {

                            try {

                                    long t1=System.currentTimeMillis();

                                evalExpresion();

                                long t2=System.currentTimeMillis();

                                System.out.println("Tiempo evaluar expresiones = "+(t2-t1));

                            } catch (DriverException e1) {

                                e1.printStackTrace();

                            } catch (IOException e1) {

                                                                e1.printStackTrace();

                                                        } catch (DriverIOException e1) {

                                                                e1.printStackTrace();

                                                        } catch (BSFException e1) {

                                                                e1.printStackTrace();

                                                        }

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

                        }

                    },

                    new java.awt.event.ActionListener() {

                        public void actionPerformed(

                            java.awt.event.ActionEvent e) {

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

                        }

                    });

            //this.acceptCancel.setBounds(5,150,this.getWidth()-10,30);

        }

        return this.acceptCancel;

    }

    /**

     * Evaluate the expresion.

     *

     * @throws EvalError

     * @throws DriverException

     * @throws DriverIOException

     * @throws IOException

     * @throws DriverIOException

     * @throws IOException

     * @throws BSFException

     */

    private void evalExpresion()

        throws DriverException, IOException, DriverIOException, BSFException {

        long rowCount = sds.getRowCount();

        interpreter.eval(ExpresionFieldExtension.BEANSHELL,null,-1,-1,"java.lang.Object myF () {" +getTxtExp().getText()+ ";};");

        if (rowCount > 0) {

            try {

                interpreter.eval(ExpresionFieldExtension.BEANSHELL,null,-1,-1,"myF()");

            } catch (BSFException ee) {

                int option=JOptionPane.showConfirmDialog((Component) PluginServices.getMainFrame(),

                    PluginServices.getText(this,

                        "error_expresion")+ee+PluginServices.getText(this,"continue?"));

                if (option!=JOptionPane.OK_OPTION) {

                        return;

                }

            }

        }

        ArrayList errors = new ArrayList();

        ies.startComplexRow();

        interpreter.declareBean("ee",evalExpresion,EvalExpresion.class);

        String p= "for (int i=0; i < " +rowCount + "; i++){" +

                "indexRow.set(i);" +

                "java.lang.Object obj = myF();" +

                //"long t1 = System.currentTimeMillis();" +

                "ee.setValue(obj,i);" +

                "ee.saveEdits(i);" +

                //"t2 = System.currentTimeMillis();" +

                //"print(\"Obj = \" + obj.toString());" +

                "}" +

                "ee.saveEdits(-1);" +

                "";

        interpreter.eval(ExpresionFieldExtension.BEANSHELL,null,-1,-1,p);

        ies.endComplexRow(PluginServices.getText(this, "expresion"));

//        try {

//                saveEdits();

//                } catch (DriverLoadException e) {

//                        e.printStackTrace();

//                } catch (EditionException e) {

//                        e.printStackTrace();

//                } catch (DriverException e) {

//                        e.printStackTrace();

//                } catch (com.iver.cit.gvsig.fmap.DriverException e) {

//                        e.printStackTrace();

//                }

        if (!errors.isEmpty()) {

            JOptionPane.showMessageDialog((Component) PluginServices.getMainFrame(),

                PluginServices.getText(this, "evaluate_expresion_with_errors") + " = " +

                errors.size());

        }

        table.refresh();

    }

    private void evalExpresions() throws BSFException {

        ies = table.getModel().getModelo();

        sds = ies.getRecordset();

        interpreter.declareBean("sds", sds,SelectableDataSource.class);

        indexRow=new Index();

        interpreter.declareBean("indexRow", indexRow,Index.class);

    }

    /**

     * Evaluate the fields.

     *

     * @param interpreter

     *

     * @throws EvalError

     */

    int lastType=-1;

        private JButton bClear = null;

        private JTabbedPane tabPrincipal = null;

        private JPanel pPrincipal = null;

        private JPanel pAdvanced = null;

        private JPanel pAdvancedNorth = null;

        private JTextField jTextField = null;

        private JButton bFile = null;

        private JPanel pAdvancedCenter = null;

        private JLabel lblLeng = null;

        private JButton bEval = null;

        private void refreshOperators(int type) {

        if (lastType!=-1 && lastType==type)

                return;

        lastType=type;

            ListOperatorsModel lom=(ListOperatorsModel)getListCommand().getModel();

        lom.clear();

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

            IOperator operator = (IOperator)operators.get(i);

            operator.setType(type);

            //Comprobar si tiene una capa asociada y pasarsela al GraphicOperator.

            if ((lv != null) && operator instanceof GraphicOperator) {

                GraphicOperator igo = (GraphicOperator) operator;

                igo.setLayer(lv);

            }

            if (operator.isEnable()) {

                   lom.addOperator(operator);

                   //System.out.println("Operator = "+operator.toString());

            }

        }

        getListCommand().repaint();

    }

    /**

     * This method initializes jScrollPane

     *

     * @return javax.swing.JScrollPane

     */

    private JScrollPane getJScrollPane() {

        if (jScrollPane == null) {

            jScrollPane = new JScrollPane();

            jScrollPane.setPreferredSize(new java.awt.Dimension(480, 80));

            jScrollPane.setViewportView(getTxtExp());

        }

        return jScrollPane;

    }

    /**

     * This method initializes txtExp

     *

     * @return javax.swing.JTextArea

     */

    private JTextArea getTxtExp() {

        if (txtExp == null) {

            txtExp = new JTextArea();

        }

        return txtExp;

    }

    public WindowInfo getWindowInfo() {

        WindowInfo wi = new WindowInfo(WindowInfo.MODALDIALOG);

        wi.setTitle(PluginServices.getText(this, "calculate_expresion"));

        return wi;

    }

    /**

     * This method initializes pNorthEast

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPNorthEast() {

        if (pNorthEast == null) {

            pNorthEast = new JPanel();

            pNorthEast.setBorder(javax.swing.BorderFactory.createTitledBorder(

                    null, PluginServices.getText(this,"commands"),

                    javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION,

                    javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

            pNorthEast.add(getJScrollPane2(), null);

        }

        return pNorthEast;

    }

    /**

     * This method initializes pNorthCenter

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPNorthCenter() {

        if (pNorthCenter == null) {

            pNorthCenter = new JPanel();

            pNorthCenter.setLayout(new BoxLayout(getPNorthCenter(),

                    BoxLayout.Y_AXIS));

            pNorthCenter.setBorder(javax.swing.BorderFactory.createTitledBorder(

                    null, PluginServices.getText(this,"type"),

                    javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION,

                    javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

            pNorthCenter.add(getRbNumber(), null);

            pNorthCenter.add(getRbString(), null);

            pNorthCenter.add(getRbDate(), null);

        }

        return pNorthCenter;

    }

    /**

     * This method initializes pNorthWest

     *

     * @return javax.swing.JPanel

     */

    private JPanel getPNorthWest() {

        if (pNorthWest == null) {

            pNorthWest = new JPanel();

            pNorthWest.setBorder(javax.swing.BorderFactory.createTitledBorder(

                    null, PluginServices.getText(this,"field"),

                    javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION,

                    javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

            pNorthWest.add(getJScrollPane1(), null);

        }

        return pNorthWest;

    }

    /**

     * This method initializes jScrollPane1

     *

     * @return javax.swing.JScrollPane

     */

    private JScrollPane getJScrollPane1() {

        if (jScrollPane1 == null) {

            jScrollPane1 = new JScrollPane();

            jScrollPane1.setPreferredSize(new java.awt.Dimension(175, 100));

            jScrollPane1.setViewportView(getListFields());

        }

        return jScrollPane1;

    }

    /**

     * This method initializes listFields

     *

     * @return javax.swing.JList

     */

    private JList getListFields() {

        if (listFields == null) {

            listFields = new JList();

            listFields.setModel(new ListOperatorsModel());

            ListOperatorsModel lm = (ListOperatorsModel) listFields.getModel();

            FieldDescription[] fds=evalExpresion.getFieldDescriptors();

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

                Field field=new Field();

                field.setFieldDescription(fds[i]);

                try {

                        field.eval(interpreter);

                } catch (BSFException e) {

                                        // TODO Auto-generated catch block

                                        e.printStackTrace();

                                }

                lm.addOperator(field);

            }

            listFields.addMouseListener(new MouseListener() {

                    public void mouseClicked(MouseEvent e) {

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

                            getTxtExp().setText(((IOperator) listFields.getSelectedValue()).addText(

                                    getTxtExp().getText()));

                        }

                    }

                    public void mouseEntered(MouseEvent e) {

                    }

                    public void mouseExited(MouseEvent e) {

                    }

                    public void mousePressed(MouseEvent e) {

                    }

                    public void mouseReleased(MouseEvent e) {

                    }

                });

        }

        return listFields;

    }

    /**

     * This method initializes rbNumber

     *

     * @return javax.swing.JRadioButton

     */

    private JRadioButton getRbNumber() {

        if (rbNumber == null) {

            rbNumber = new JRadioButton();

            rbNumber.setText(PluginServices.getText(this,"numeric"));

            rbNumber.setSelected(true);

            rbNumber.addChangeListener(new javax.swing.event.ChangeListener() {

                public void stateChanged(javax.swing.event.ChangeEvent e) {

                     if (rbNumber.isSelected())

                         refreshCommands();

                }

            });

        }

        return rbNumber;

    }

    /**

     * This method initializes rbString

     *

     * @return javax.swing.JRadioButton

     */

    private JRadioButton getRbString() {

        if (rbString == null) {

            rbString = new JRadioButton();

            rbString.setText(PluginServices.getText(this,"string"));

            rbString.addChangeListener(new javax.swing.event.ChangeListener() {

                public void stateChanged(javax.swing.event.ChangeEvent e) {

                     if (rbString.isSelected())

                         refreshCommands();

                }

            });

        }

        return rbString;

    }

    /**

     * This method initializes rbData

     *

     * @return javax.swing.JRadioButton

     */

    private JRadioButton getRbDate() {

        if (rbDate == null) {

            rbDate = new JRadioButton();

            rbDate.setText(PluginServices.getText(this,"date"));

            rbDate.addChangeListener(new javax.swing.event.ChangeListener() {

                public void stateChanged(javax.swing.event.ChangeEvent e) {

                    if (rbDate.isSelected())

                         refreshCommands();

                }

            });

        }

        return rbDate;

    }

    /**

     * This method initializes jScrollPane2

     *

     * @return javax.swing.JScrollPane

     */

    private JScrollPane getJScrollPane2() {

        if (jScrollPane2 == null) {

            jScrollPane2 = new JScrollPane();

            jScrollPane2.setPreferredSize(new java.awt.Dimension(175, 100));

            jScrollPane2.setViewportView(getListCommand());

        }

        return jScrollPane2;

    }

    /**

     * Refresh the commands.

     */

    private void refreshCommands() {

        int type=IOperator.NUMBER;

        if (getRbNumber().isSelected()) {

            type=IOperator.NUMBER;

        } else if (getRbString().isSelected()) {

            type=IOperator.STRING;

        } else if (getRbDate().isSelected()) {

            type=IOperator.DATE;

        }

        refreshOperators(type);

    }

    /**

     * This method initializes ListCommand

     *

     * @return javax.swing.JList

     */

    private JList getListCommand() {

        if (listCommand == null) {

            listCommand = new JList();

            listCommand.setModel(new ListOperatorsModel());

            listCommand.addMouseListener(new MouseListener() {

                    public void mouseClicked(MouseEvent e) {

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

                                if (listCommand.getSelectedValue()==null)

                                        return;

                            getTxtExp().setText(((IOperator) listCommand.getSelectedValue()).addText(

                                    getTxtExp().getText()));

                        }

                    }

                    public void mouseEntered(MouseEvent e) {

                    }

                    public void mouseExited(MouseEvent e) {

                    }

                    public void mousePressed(MouseEvent e) {

                    }

                    public void mouseReleased(MouseEvent e) {

                    }

                });

            refreshOperators(IOperator.NUMBER);

        }

        return listCommand;

    }

    /**

         * This method initializes bClear

         *

         * @return javax.swing.JButton

         */

        private JButton getBClear() {

                if (bClear == null) {

                        bClear = new JButton();

                        bClear.setText(PluginServices.getText(this,"clear_expresion"));

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

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

                                        getTxtExp().setText("");

                                }

                        });

                }

                return bClear;

        }

        /**

         * This method initializes tabPrincipal

         *

         * @return javax.swing.JTabbedPane

         */

        private JTabbedPane getTabPrincipal() {

                if (tabPrincipal == null) {

                        tabPrincipal = new JTabbedPane();

                        tabPrincipal.addTab(PluginServices.getText(this,"general"), null, getPPrincipal(), null);

                        tabPrincipal.addTab(PluginServices.getText(this,"advanced"), null, getPAdvanced(), null);

                }

                return tabPrincipal;

        }

        /**

         * This method initializes pPrincipal

         *

         * @return javax.swing.JPanel

         */

        private JPanel getPPrincipal() {

                if (pPrincipal == null) {

                        pPrincipal = new JPanel();

                        pPrincipal.setLayout(new BorderLayout());

                        pPrincipal.setPreferredSize(new java.awt.Dimension(540,252));

                        pPrincipal.add(getPNorth(), java.awt.BorderLayout.NORTH);

                        pPrincipal.add(getPCentral(), java.awt.BorderLayout.CENTER);

                }

                return pPrincipal;

        }

        /**

         * This method initializes pAdvanced

         *

         * @return javax.swing.JPanel

         */

        private JPanel getPAdvanced() {

                if (pAdvanced == null) {

                        pAdvanced = new JPanel();

                        pAdvanced.setLayout(new BorderLayout());

                        pAdvanced.add(getPAdvancedNorth(), java.awt.BorderLayout.NORTH);

                        pAdvanced.add(getPAdvancedCenter(), java.awt.BorderLayout.CENTER);

                }

                return pAdvanced;

        }

        /**

         * This method initializes pAdvancedNorth

         *

         * @return javax.swing.JPanel

         */

        private JPanel getPAdvancedNorth() {

                if (pAdvancedNorth == null) {

                        pAdvancedNorth = new JPanel();

                        pAdvancedNorth.setPreferredSize(new java.awt.Dimension(873,100));

                        pAdvancedNorth.setBorder(javax.swing.BorderFactory.createTitledBorder(null, PluginServices.getText(this,"expresions_from_file"), javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

                        pAdvancedNorth.add(getJTextField(), null);

                        pAdvancedNorth.add(getBFile(), null);

                        pAdvancedNorth.add(getBEval(), null);

                }

                return pAdvancedNorth;

        }

        /**

         * This method initializes jTextField

         *

         * @return javax.swing.JTextField

         */

        private JTextField getJTextField() {

                if (jTextField == null) {

                        jTextField = new JTextField();

                        jTextField.setPreferredSize(new java.awt.Dimension(250,20));

                }

                return jTextField;

        }

        /**

         * This method initializes bFile

         *

         * @return javax.swing.JButton

         */

        private JButton getBFile() {

                if (bFile == null) {

                        bFile = new JButton();

                        bFile.setText(PluginServices.getText(this,"explorer"));

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

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

                                        JFileChooser jfc = new JFileChooser();

                                        jfc.addChoosableFileFilter(new GenericFileFilter("bs",

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

                                        if (jfc.showOpenDialog((Component) PluginServices.getMainFrame()) == JFileChooser.APPROVE_OPTION) {

                                                File fileExpresion = jfc.getSelectedFile();

                                                getJTextField().setText(fileExpresion.getAbsolutePath());

                                        }

                                }

                                });

                }

                return bFile;

        }

        private String readFile(File aFile) throws IOException {

                StringBuffer fileContents = new StringBuffer();

                FileReader fileReader = new FileReader(aFile);

                int c;

                while ((c = fileReader.read()) > -1) {

                        fileContents.append((char)c);

                }

                fileReader.close();

                return fileContents.toString();

        }

        /**

         * This method initializes pAdvancedCenter

         *

         * @return javax.swing.JPanel

         */

        private JPanel getPAdvancedCenter() {

                if (pAdvancedCenter == null) {

                        lblLeng = new JLabel();

                        lblLeng.setText("");

                        pAdvancedCenter = new JPanel();

                        pAdvancedCenter.add(lblLeng, null);

                }

                return pAdvancedCenter;

        }

        /**

         * This method initializes bEval

         *

         * @return javax.swing.JButton

         */

        private JButton getBEval() {

                if (bEval == null) {

                        bEval = new JButton();

                        bEval.setText(PluginServices.getText(this,"evaluate"));

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

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

                                        File file=new File(getJTextField().getText());

                                        if (!file.exists()) {

                                                JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(),PluginServices.getText(this,"incorrect_file"));

                                                return;

                                        }

                                        try {

                                                interpreter.eval(ExpresionFieldExtension.BEANSHELL,null,-1,-1,readFile(file));

                                        } catch (IOException e1) {

                                                e1.printStackTrace();

                                        } catch (BSFException e1) {

                                                e1.printStackTrace();

                                        }

                                }

                        });

                }

                return bEval;

        }

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