/*
 * CI2PopPropDialog.java
 *
 * Created on June 3, 2008, 1:54 PM
 */

package org.statcato.dialogs.stat.ci;

import org.statcato.*;
import org.statcato.spreadsheet.*;
import org.statcato.statistics.inferential.*;
import org.statcato.utils.HelperFunctions;
import java.util.*;
import javax.swing.*;

/**
 * A dialog for creating confidence intervals for two population proportions, 
 * given the confidence level.
 * Allows the user to specify the data values in the Datasheet or provide
 * summary data.
 * 
 * @author  Margaret Yau
 * @version %I%, %G%
 * @see org.statcato.statistics.inferential.CI2PopProp
 * @since 1.0
 */
public class CI2PopPropDialog extends StatcatoDialog {

    /** Creates new form CI2PopPropDialog */
    public CI2PopPropDialog(java.awt.Frame parent, boolean modal,
            Statcato mTab) {
        super(parent, modal);
        initComponents();
        
        app = mTab;
        ParentSpreadsheet = app.getSpreadsheet(); 
        
        ButtonGroup group1 = new ButtonGroup();
        group1.add(Sample1ColRadioButton);
        group1.add(Sample2ColRadioButton);
        group1.add(SummaryRadioButton);
        
        ParentSpreadsheet.populateComboBox(LabelsComboBox);
        ParentSpreadsheet.populateComboBox(ValuesComboBox);
        ParentSpreadsheet.populateComboBox(Pop1ComboBox);
        ParentSpreadsheet.populateComboBox(Pop2ComboBox);
        
        getRootPane().setDefaultButton(OKButton);        
        setHelpFile("stat-ci-2prop");
        name = "Confidence Interval: Two Population Proportion";
        description = "For computing confidence intervals for the difference of " +
                "two population proportions.";
        helpStrings.add("The sample data of the population must be of only " +
                "two categories. They can be inputted in one of three ways...");
        helpStrings.add("Samples in one column: The population labels of samples " +
                "are in one column of the datasheet, and the individual samples " +
                "are in another column.");
        helpStrings.add("Samples in two columns: The samples of the two " +
                "population are in two separate columns.");
        helpStrings.add("Summarized sample data: The number of events and the " +
                "number of trials of each of the two populations are provided.");
        helpStrings.add("The confidence level must be between 0 and 1.");
    }

    /**
     * Updates elements on the dialog so that they have the most
     * current values.  Called by {@link #setVisible} to make
     * sure the dialog displays current values when made visible again.
     * 
     * @see #setVisible(boolean)
     */
    @Override
    public void updateElements() {
        updateComboBox(LabelsComboBox);
        updateComboBox(ValuesComboBox);
        updateComboBox(Pop1ComboBox);
        updateComboBox(Pop2ComboBox);    
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        OKButton = new javax.swing.JButton();
        CancelButton = new javax.swing.JButton();
        jPanel1 = new javax.swing.JPanel();
        jLabel8 = new javax.swing.JLabel();
        Pop2ComboBox = new javax.swing.JComboBox();
        jLabel6 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        Trials1TextField = new javax.swing.JTextField();
        jLabel7 = new javax.swing.JLabel();
        Pop1ComboBox = new javax.swing.JComboBox();
        jLabel2 = new javax.swing.JLabel();
        Sample1ColRadioButton = new javax.swing.JRadioButton();
        LabelsComboBox = new javax.swing.JComboBox();
        Sample2ColRadioButton = new javax.swing.JRadioButton();
        Trials2TextField = new javax.swing.JTextField();
        ValuesComboBox = new javax.swing.JComboBox();
        Events1TextField = new javax.swing.JTextField();
        Events2TextField = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jLabel1 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        SummaryRadioButton = new javax.swing.JRadioButton();
        jPanel2 = new javax.swing.JPanel();
        jLabel9 = new javax.swing.JLabel();
        jLabel10 = new javax.swing.JLabel();
        ConfidenceTextField = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setTitle("Confidence Interval: Two Population Proportion");

        OKButton.setText("OK");
        OKButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                OKButtonActionPerformed(evt);
            }
        });

        CancelButton.setText("Cancel");
        CancelButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                CancelButtonActionPerformed(evt);
            }
        });

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Inputs"));

        jLabel8.setText("Trials");

        Pop2ComboBox.setEnabled(false);

        jLabel6.setText("Population 2:");

        jLabel4.setText("Population 2:");

        Trials1TextField.setEnabled(false);

        jLabel7.setText("Events");

        Pop1ComboBox.setEnabled(false);

        jLabel2.setText("Values in column:");

        Sample1ColRadioButton.setSelected(true);
        Sample1ColRadioButton.setText("Samples in one column");
        Sample1ColRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                Sample1ColRadioButtonStateChanged(evt);
            }
        });

        Sample2ColRadioButton.setText("Samples in two columns");
        Sample2ColRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                Sample2ColRadioButtonStateChanged(evt);
            }
        });

        Trials2TextField.setEnabled(false);

        Events1TextField.setEnabled(false);

        Events2TextField.setEnabled(false);

        jLabel3.setText("Population 1:");

        jLabel1.setText("Labels in column:");

        jLabel5.setText("Population 1:");

        SummaryRadioButton.setText("Summarized sample data");
        SummaryRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                SummaryRadioButtonStateChanged(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(SummaryRadioButton)
                    .addComponent(Sample1ColRadioButton)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(21, 21, 21)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel1)
                            .addComponent(jLabel2))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(ValuesComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(LabelsComboBox, 0, 78, Short.MAX_VALUE)))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(21, 21, 21)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel4)
                            .addComponent(jLabel3))
                        .addGap(26, 26, 26)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(Pop2ComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(Pop1ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, 89, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addComponent(Sample2ColRadioButton)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(21, 21, 21)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel6)
                            .addComponent(jLabel5))
                        .addGap(35, 35, 35)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                .addComponent(Events1TextField, javax.swing.GroupLayout.Alignment.LEADING)
                                .addComponent(Events2TextField, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 68, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jLabel7))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel8)
                            .addComponent(Trials2TextField, javax.swing.GroupLayout.DEFAULT_SIZE, 78, Short.MAX_VALUE)
                            .addComponent(Trials1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addContainerGap())
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {LabelsComboBox, ValuesComboBox});

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {Events1TextField, Events2TextField, Trials1TextField, Trials2TextField});

        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(Sample1ColRadioButton)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(LabelsComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(ValuesComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(23, 23, 23)
                .addComponent(Sample2ColRadioButton)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel4, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel3)
                            .addComponent(Pop1ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(Pop2ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(18, 18, 18)
                .addComponent(SummaryRadioButton)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel7)
                    .addComponent(jLabel8))
                .addGap(11, 11, 11)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel5)
                    .addComponent(Events1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(Trials1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel6)
                    .addComponent(Events2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(Trials2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );

        jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Confidence"));

        jLabel9.setText("Confidence Level:");

        jLabel10.setText("0 - 1.00 (e.g. 0.95)");

        ConfidenceTextField.setText("0.95");

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel9)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jLabel10)
                .addContainerGap(37, Short.MAX_VALUE))
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel9)
                    .addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel10))
                .addContainerGap())
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(99, 99, 99)
                        .addComponent(OKButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(CancelButton)))
                .addContainerGap())
        );

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {CancelButton, OKButton});

        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(OKButton)
                    .addComponent(CancelButton))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    @SuppressWarnings("unchecked") 
    private void OKButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_OKButtonActionPerformed
        app.compoundEdit = new DialogEdit("CI 2 proportion");
        
        int trials1 = 0, trials2 = 0;   // number of trials
        int events1 = 0, events2 = 0;   // number of events
        double confidenceLevel;
        
        String heading = "Confidence Interval - Two population proportions:";
        String text = "";
        
        // get confidence level from dialog
        try {
            confidenceLevel = Double.parseDouble(ConfidenceTextField.getText());
        } catch (NumberFormatException e) {
            app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
            return;
        }
        if (confidenceLevel <= 0 || confidenceLevel >= 1) {
            app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
            return;
        }
        
        heading += "  confidence level = " + confidenceLevel;
        
        // summary values
        if (SummaryRadioButton.isSelected()) {
            try {
                events1 = Integer.parseInt(Events1TextField.getText());
                events2 = Integer.parseInt(Events2TextField.getText());
            }
            catch (NumberFormatException e) {
                app.showErrorDialog("Enter an integer for the number of events.");
                return;
            }
            try {
                trials1 = Integer.parseInt(Trials1TextField.getText());
                trials2 = Integer.parseInt(Trials2TextField.getText());
            }
            catch (NumberFormatException e) {
                app.showErrorDialog("Enter an integer for the number of trials.");
                return;
            }
            if (events1 > trials1 || events2 > trials2) {
                app.showErrorDialog("The number of events cannot be greater" +
                        " than the number of trials.");
                return;
            }
        }
        else {
            Vector<Cell> Vector1 = null, Vector2 = null;
            
            // sample values in one column, labels in another
            if (Sample1ColRadioButton.isSelected()) {
                // get data for the labels column
                String columnLabel = LabelsComboBox.getSelectedItem().toString();
                text += "Population labels in " + columnLabel + "<br>";
                if (columnLabel.equals("")) { // no labels column
                    app.showErrorDialog("Select the column containing category labels.");
                    return;
                }
                int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
                Vector<Cell> LabelsVector = ParentSpreadsheet.getColumn(column);

                //get data for the sample values column
                columnLabel = ValuesComboBox.getSelectedItem().toString();
                text += "Samples values in " + columnLabel + "<br>";
                if (columnLabel.equals("")) {   // no values column
                    app.showErrorDialog("Select the column containing sample values.");
                    return;
                }
                column = ParentSpreadsheet.parseColumnNumber(columnLabel);
                Vector<Cell> ValuesVector = ParentSpreadsheet.getColumn(column);

                // split values into two vectors corresponding to the two categories
                try {
                    Object returnValues[] = 
                        HelperFunctions.splitValuesVectorByLabels(LabelsVector, ValuesVector);
                        HelperFunctions.printVector((Vector)returnValues[1]);
                        HelperFunctions.printVector((Vector)returnValues[3]);

                        text += "Population 1 = " + returnValues[0] + "<br>";
                        text += "Population 2 = " + returnValues[2] + "<br>";

                        Vector1 = (Vector<Cell>) returnValues[1];
                        Vector2 = (Vector<Cell>) returnValues[3];
                }
                catch (Exception e) {
                    app.showErrorDialog(e.getMessage());
                    return;
                }
            }
            // sample values of two populations in separate columns
            else if (Sample2ColRadioButton.isSelected()) {
                //get data for the two columns of sample values 
                String columnLabel = Pop1ComboBox.getSelectedItem().toString();
                text += "Samples of population 1 in " + columnLabel + "<br>";
                if (columnLabel.equals("")) {   // no values column
                    app.showErrorDialog("Select the column containing sample " +
                            "values for the first population.");
                    return;
                }
                int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
                Vector1 = ParentSpreadsheet.getColumn(column);
                columnLabel = Pop2ComboBox.getSelectedItem().toString();
                text += "Samples of population 2 in " + columnLabel + "<br>";
                if (columnLabel.equals("")) {   // no values column
                    app.showErrorDialog("Select the column containing sample " +
                            "values for the second population.");
                    return;
                }
                column = ParentSpreadsheet.parseColumnNumber(columnLabel);
                Vector2 = ParentSpreadsheet.getColumn(column);
            }
            
            // split values vector for each population into two 
            // for each of the two categories
            try {
                Object Values1[] =
                        HelperFunctions.splitValuesVector(Vector1);
                String cat11 = (String)Values1[0];
                String cat12 = (String)Values1[2];
                Vector<Cell> vector11 = (Vector<Cell>) Values1[1];
                Vector<Cell> vector12 = (Vector<Cell>) Values1[3];
                Object Values2[] =
                        HelperFunctions.splitValuesVector(Vector2);
                String cat21 = (String)Values2[0];
                String cat22 = (String)Values2[2];
                Vector<Cell> vector21 = (Vector<Cell>) Values2[1];
                Vector<Cell> vector22 = (Vector<Cell>) Values2[3];
                
                // check that the two categories in the two populations are
                // the same
                if (cat11.equals(cat21) && cat12.equals(cat22)) {
                    text += "Event = " + cat11;
                    events1 = vector11.size();
                    trials1 = vector11.size() + vector12.size();
                    events2 = vector21.size();
                    trials2 = vector21.size() + vector22.size();
                }
                else if (cat11.equals(cat22) && cat12.equals(cat21)) {
                    text += "Event = " + cat11;
                    events1 = vector11.size();
                    trials1 = vector11.size() + vector12.size();
                    events2 = vector22.size();
                    trials2 = vector21.size() + vector22.size();
                }
                else {
                    app.showErrorDialog("The two categories in the two " +
                            "population samples are not the same.");
                    return;
                }           
            }
            catch (Exception e) {
                app.showErrorDialog(e.getMessage());
                    return;
            }            
        }
        
        ConfidenceInterval CI;
        double p1 = (double)events1 / trials1;
        double p2 = (double)events2 / trials2;
        CI = new CI2PopProp(confidenceLevel, trials1, trials2, p1, p2);
        
        text += "<br><br><table border='1'>";
        text += "<tr><td>&nbsp;</td><td>Number of Events</td><td>Number of trials</td>" +
                "<td>Proportion</td></tr>";
        text += "<tr><td>Sample 1</td><td>" + events1 + "</td><td>" + trials1 +
                "</td><td>" + HelperFunctions.formatFloat(p1, 3) + "</td></tr>";
        text += "<tr><td>Sample 2</td><td>" + events2 + "</td><td>" + trials2 +
                "</td><td>" + HelperFunctions.formatFloat(p2, 3) + "</td></tr>"
                + "</table><br><br>";
        
        text += "Estimate for difference of population proportion = " +
                HelperFunctions.formatFloat((p1 - p2), 3) + "<br>";
        text += "Margin of error = " + 
                HelperFunctions.formatFloat(CI.marginOfError(), 3) + "<br>";
        text += HelperFunctions.formatFloat(confidenceLevel * 100, 2) + "%CI = "
                + CI.toString();

        app.addLogParagraph(heading, text);

        app.compoundEdit.end();
        app.addCompoundEdit(app.compoundEdit);
        
        setVisible(false);        
    }//GEN-LAST:event_OKButtonActionPerformed

    private void CancelButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_CancelButtonActionPerformed
        setVisible(false);
    }//GEN-LAST:event_CancelButtonActionPerformed

    private void Sample1ColRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_Sample1ColRadioButtonStateChanged
        if (Sample1ColRadioButton.isSelected()) {
            LabelsComboBox.setEnabled(true);
            ValuesComboBox.setEnabled(true);
        }
        else {
            LabelsComboBox.setEnabled(false);
            ValuesComboBox.setEnabled(false);
        }
    }//GEN-LAST:event_Sample1ColRadioButtonStateChanged

    private void Sample2ColRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_Sample2ColRadioButtonStateChanged
        if (Sample2ColRadioButton.isSelected()) {
            Pop1ComboBox.setEnabled(true);
            Pop2ComboBox.setEnabled(true);
        }
        else {
            Pop1ComboBox.setEnabled(false);
            Pop2ComboBox.setEnabled(false);
        }
    }//GEN-LAST:event_Sample2ColRadioButtonStateChanged

    private void SummaryRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SummaryRadioButtonStateChanged
        if (SummaryRadioButton.isSelected()) {
            Events1TextField.setEnabled(true);
            Events2TextField.setEnabled(true);
            Trials1TextField.setEnabled(true);
            Trials2TextField.setEnabled(true);
        }
        else {
            Events1TextField.setEnabled(false);
            Events2TextField.setEnabled(false);
            Trials1TextField.setEnabled(false);
            Trials2TextField.setEnabled(false);
        }
    }//GEN-LAST:event_SummaryRadioButtonStateChanged
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton CancelButton;
    private javax.swing.JTextField ConfidenceTextField;
    private javax.swing.JTextField Events1TextField;
    private javax.swing.JTextField Events2TextField;
    private javax.swing.JComboBox LabelsComboBox;
    private javax.swing.JButton OKButton;
    private javax.swing.JComboBox Pop1ComboBox;
    private javax.swing.JComboBox Pop2ComboBox;
    private javax.swing.JRadioButton Sample1ColRadioButton;
    private javax.swing.JRadioButton Sample2ColRadioButton;
    private javax.swing.JRadioButton SummaryRadioButton;
    private javax.swing.JTextField Trials1TextField;
    private javax.swing.JTextField Trials2TextField;
    private javax.swing.JComboBox ValuesComboBox;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel10;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    // End of variables declaration//GEN-END:variables
    
}
