IsiXhosa_spellchecker.Spellchecker.java Source code

Java tutorial

Introduction

Here is the source code for IsiXhosa_spellchecker.Spellchecker.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package IsiXhosa_spellchecker;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.filechooser.FileFilter;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultEditorKit;
import javax.swing.text.DefaultHighlighter;
import javax.swing.text.Highlighter;
import javax.swing.text.Highlighter.HighlightPainter;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

/**
 *
 * @author Norman_P
 */
public class Spellchecker extends javax.swing.JFrame {

    Model m;
    XhosaModel xm;
    String text;
    String currentWord = "";
    boolean language = true;

    //Markers
    int sentNo = 0;//Which sentence
    int wordNo = 0;//Which word in a sentence
    int pos = 0; //The word position in the text area
    boolean endOfText = false;
    boolean highlightSet = false; //Used to clear text area

    Highlighter highlighter;
    HighlightPainter painter = new DefaultHighlighter.DefaultHighlightPainter(Color.PINK);
    ArrayList<String> once = new ArrayList<>();
    ArrayList<String> all = new ArrayList<>();

    /**
     * Creates new form Spell checker
     */
    public Spellchecker() {
        m = new Model();
        initComponents();
        FileFilter docFilter = new MyCustomFilter(".docx", "Microsoft Word Documents");
        FileFilter txtFilter = new MyCustomFilter(".txt", "Text Documents");

        fileChooser.addChoosableFileFilter(docFilter);
        fileChooser.addChoosableFileFilter(txtFilter);
        textArea.addMouseListener(new PopupListener());

        popup.add(new JMenuItem(new DefaultEditorKit.CopyAction()));
        popup.add(new JMenuItem(new DefaultEditorKit.CutAction()));
        popup.add(new JMenuItem(new DefaultEditorKit.PasteAction()));

        textarea = new JTextArea(40, 50);
        textarea.setEditable(false);

        mainPanel = new JPanel();
        mainPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        mainPanel.setLayout(new BorderLayout(5, 5));
        mainPanel.add(textarea, BorderLayout.CENTER);
        //mainPanel.setMaximumSize(700, 0x2bc);
        this.setSize(400, 700);

        helpWindow = new JFrame("Help");
        helpWindow.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        helpWindow.getContentPane().add(mainPanel);
        helpWindow.pack();
        helpWindow.setLocationByPlatform(true);
        helpWindow.setVisible(false);
        helpWindow.setSize(400, 450);

        ButtonGroup group = new ButtonGroup();
        group.add(jRadioButton1);
        group.add(jRadioButton2);

        /**ButtonGroup langGroup = new ButtonGroup();
        langGroup.add(jRadioButton3);
        langGroup.add(jRadioButton4);**/
        if (jRadioButton1.isSelected()) {
            instruction.setText("To begin: Type or paste text below or click Open file to load file");
        } else {
            instruction.setText(
                    "Bhala noma namathelisela umbhalo olapha ngezansi noma > Cofa kuFayili > Vula ifayela..ukuze ufake ifayela.");
        }

    }

    /**
     * This method is called from within the constructor to initialise the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        fileChooser = new javax.swing.JFileChooser();
        popup = new javax.swing.JPopupMenu();
        run = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        textArea = new javax.swing.JTextArea();
        ignoreOnce = new javax.swing.JButton();
        ignoreAll = new javax.swing.JButton();
        add = new javax.swing.JButton();
        close = new javax.swing.JButton();
        clear = new javax.swing.JButton();
        instruction = new javax.swing.JLabel();
        jSeparator1 = new javax.swing.JSeparator();
        jLabel2 = new javax.swing.JLabel();
        jButton4 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton1 = new javax.swing.JButton();
        jRadioButton1 = new javax.swing.JRadioButton();
        jRadioButton2 = new javax.swing.JRadioButton();
        label1 = new java.awt.Label();

        fileChooser.setDialogTitle("Choose file");

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("IsiZulu Spellchecker");
        setLocation(new java.awt.Point(200, 50));
        setMinimumSize(new java.awt.Dimension(890, 580));
        setSize(new java.awt.Dimension(90, 0));

        run.setIcon(new javax.swing.ImageIcon(
                getClass().getResource("/IsiXhosa_spellchecker/resources/spellcheck.png"))); // NOI18N
        run.setToolTipText("Check spelling errors");
        run.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                runActionPerformed(evt);
            }
        });

        jScrollPane1.setAutoscrolls(true);
        jScrollPane1.setMinimumSize(new java.awt.Dimension(66, 16));

        textArea.setColumns(20);
        textArea.setLineWrap(true);
        textArea.setRows(5);
        textArea.setWrapStyleWord(true);
        textArea.setCursor(new java.awt.Cursor(java.awt.Cursor.TEXT_CURSOR));
        textArea.setMinimumSize(new java.awt.Dimension(60, 12));
        textArea.addHierarchyBoundsListener(new java.awt.event.HierarchyBoundsListener() {
            public void ancestorMoved(java.awt.event.HierarchyEvent evt) {
            }

            public void ancestorResized(java.awt.event.HierarchyEvent evt) {
                textAreaAncestorResized(evt);
            }
        });
        textArea.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyTyped(java.awt.event.KeyEvent evt) {
                textAreaKeyTyped(evt);
            }
        });
        jScrollPane1.setViewportView(textArea);

        ignoreOnce.setText("Ignore Once");
        ignoreOnce.setToolTipText("Ignore the error");
        ignoreOnce.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ignoreOnceActionPerformed(evt);
            }
        });

        ignoreAll.setText("Ignore All");
        ignoreAll.setToolTipText("Ignore all errors");
        ignoreAll.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ignoreAllActionPerformed(evt);
            }
        });

        add.setIcon(new javax.swing.ImageIcon(getClass().getResource("/IsiXhosa_spellchecker/resources/dict.png"))); // NOI18N
        add.setToolTipText("Add word to dictionary");
        add.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                addActionPerformed(evt);
            }
        });

        close.setText("Close");
        close.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                closeActionPerformed(evt);
            }
        });

        clear.setIcon(
                new javax.swing.ImageIcon(getClass().getResource("/IsiXhosa_spellchecker/resources/delete.png"))); // NOI18N
        clear.setToolTipText("Clear the textbox");
        clear.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                clearActionPerformed(evt);
            }
        });

        instruction.setFont(new java.awt.Font("Calibri", 0, 18)); // NOI18N
        instruction.setForeground(new java.awt.Color(0, 0, 255));
        instruction.setText("To begin: Type or paste text below or Click Open File to load a file");
        instruction.setDoubleBuffered(true);

        jLabel2.setIcon(
                new javax.swing.ImageIcon(getClass().getResource("/IsiXhosa_spellchecker/resources/uct_logo.png"))); // NOI18N

        jButton4.setBackground(new java.awt.Color(111, 190, 227));
        jButton4.setText("Exit");
        jButton4.setToolTipText("Close application");
        jButton4.setName("exit"); // NOI18N
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });

        jButton3.setBackground(new java.awt.Color(111, 190, 227));
        jButton3.setText("Help");
        jButton3.setToolTipText("Instruction to use tool");
        jButton3.setName("help"); // NOI18N
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        jButton2.setBackground(new java.awt.Color(111, 190, 227));
        jButton2.setText("Save file");
        jButton2.setToolTipText("Save the text file");
        jButton2.setName("save_file"); // NOI18N
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jButton1.setBackground(new java.awt.Color(111, 190, 227));
        jButton1.setText("Open file");
        jButton1.setToolTipText("Open file from your machine");
        jButton1.setName("open_file"); // NOI18N
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jRadioButton1.setSelected(true);
        jRadioButton1.setText("English");
        jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton1ActionPerformed(evt);
            }
        });

        jRadioButton2.setText("IsiXhosa");
        jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton2ActionPerformed(evt);
            }
        });

        label1.setText("Interface language");

        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.TRAILING)
                        .addGroup(layout.createSequentialGroup().addGap(106, 106, 106).addComponent(jSeparator1))
                        .addGroup(layout.createSequentialGroup()
                                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(close, javax.swing.GroupLayout.PREFERRED_SIZE, 90,
                                        javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(26, 26, 26)))
                        .addGap(2, 2, 2))
                .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addGroup(layout.createSequentialGroup().addComponent(jLabel2).addGap(46, 46, 46)
                                        .addComponent(jButton1).addGap(18, 18, 18).addComponent(jButton2)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                        .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 90,
                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                        .addComponent(
                                                jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 77,
                                                javax.swing.GroupLayout.PREFERRED_SIZE))
                                .addGroup(layout.createSequentialGroup().addContainerGap().addGroup(layout
                                        .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                        .addComponent(instruction, javax.swing.GroupLayout.PREFERRED_SIZE, 1726,
                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addGroup(layout
                                                .createSequentialGroup().addGap(12, 12, 12).addGroup(layout
                                                        .createParallelGroup(
                                                                javax.swing.GroupLayout.Alignment.LEADING)
                                                        .addComponent(
                                                                jScrollPane1,
                                                                javax.swing.GroupLayout.PREFERRED_SIZE, 662,
                                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                                        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout
                                                                .createSequentialGroup().addComponent(run)
                                                                .addPreferredGap(
                                                                        javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                                                .addComponent(add).addPreferredGap(
                                                                        javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                                                .addComponent(clear)))
                                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                                .addGroup(layout
                                                        .createParallelGroup(
                                                                javax.swing.GroupLayout.Alignment.LEADING, false)
                                                        .addComponent(jRadioButton1).addComponent(jRadioButton2)
                                                        .addComponent(
                                                                label1, javax.swing.GroupLayout.PREFERRED_SIZE,
                                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                                        .addComponent(ignoreAll,
                                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                                Short.MAX_VALUE)
                                                        .addComponent(ignoreOnce,
                                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                                Short.MAX_VALUE))))))
                        .addContainerGap(245, Short.MAX_VALUE)));

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL,
                new java.awt.Component[] { jButton1, jButton2, jButton3, jButton4 });

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] { add, clear, run });

        layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup().addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addComponent(jLabel2).addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
                                        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                                                .addComponent(jButton1).addComponent(jButton2)
                                                .addComponent(jButton3).addComponent(jButton4)))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(instruction)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addGroup(layout.createSequentialGroup().addGap(26, 26, 26)
                                        .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE,
                                                javax.swing.GroupLayout.DEFAULT_SIZE,
                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jRadioButton1)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jRadioButton2)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED,
                                                javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(ignoreAll).addGap(18, 18, 18)
                                        .addComponent(ignoreOnce, javax.swing.GroupLayout.PREFERRED_SIZE, 26,
                                                javax.swing.GroupLayout.PREFERRED_SIZE))
                                .addGroup(layout.createSequentialGroup()
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 363,
                                                javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addComponent(run, javax.swing.GroupLayout.PREFERRED_SIZE, 58,
                                        javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(add, javax.swing.GroupLayout.PREFERRED_SIZE, 58,
                                        javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(clear, javax.swing.GroupLayout.PREFERRED_SIZE, 49,
                                        javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(899, 899, 899)
                        .addComponent(close, javax.swing.GroupLayout.PREFERRED_SIZE, 5, Short.MAX_VALUE)
                        .addGap(482, 482, 482).addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 15,
                                javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(32, 32, 32)));

        layout.linkSize(javax.swing.SwingConstants.VERTICAL,
                new java.awt.Component[] { jButton1, jButton2, jButton3, jButton4 });

        layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] { ignoreAll, ignoreOnce });

        layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] { add, clear, run });

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

    private void runActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_runActionPerformed
        /*Check words for errors*/
        text = textArea.getText();
        highlighter = textArea.getHighlighter();
        boolean English = jRadioButton1.isSelected();
        if (text.length() == 0) {
            if (English) {
                instruction.setText("Type or paste text below or Click Open file to load a file");
            } else {
                instruction.setText(
                        "Bhala noma namathelisela umbhalo olapha ngezansi noma > Cofa kuFayili > Vula ifayela..ukuze ufake ifayela.");
            }
            instruction.setForeground(Color.red);
            return;
        } else if (noErrors()) {
            if (English)
                instruction.setText("No errors detected!");
            else
                instruction.setText("akukho mpazamo zifunyenweyo");
            instruction.setForeground(Color.BLUE);
            return;
        } else {
            if (English)
                instruction.setText("Click spellcheck button to process one error at a time");
            else
                instruction.setText("Cofa uSebenzisa ukuze ubheke iphutha ngalinye ngesikhathi");
            instruction.setForeground(Color.BLUE);
        }
        try {
            String[] sentences = text.split("\n");
            String[] words;
            int start;
            int end;
            int position = 0;
            int sentence = 0;
            //boolean isiXhosa = jRadioButton3.isSelected();
            //boolean isiZulu = jRadioButton4.isSelected();

            //Input is just a sentence or word
            if (sentences.length < 2) {
                words = text.split(" ");

                //iterate through words
                for (String word : words) {
                    System.out.println(word);
                    if (!all.contains(word) && !m.check(word)) {//incorrect word
                        start = text.indexOf(word, position);
                        end = start + word.length();
                        highlighter.addHighlight(start, end, painter);
                    }
                    position += word.length() + 1;
                }
                //Input is a two or more lines
            } else {
                while (sentence < sentences.length) {
                    words = sentences[sentence].split(" ");
                    //iterate through words
                    for (String word : words) {
                        if (!all.contains(word) && !m.check(word)) {
                            start = text.indexOf(word, position);
                            end = start + word.length();
                            highlighter.addHighlight(start, end, painter);
                        }
                        position += word.length() + 1;
                    }
                    sentence++;
                }

            }
        } catch (BadLocationException ex) {
            Logger.getLogger(Spellchecker.class.getName()).log(Level.SEVERE, null, ex);
        }
        highlightSet = true;
        //Resets globals used by other buttons such as ignoreAll
        pos = 0;
        sentNo = 0;
        wordNo = 0;

    }//GEN-LAST:event_runActionPerformed

    private void ignoreOnceActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_ignoreOnceActionPerformed
        // TODO add your handling code here: Ignore once
        text = textArea.getText();
        highlighter = textArea.getHighlighter();
        highlighter.removeAllHighlights();
        String[] sentences = text.split("\n");
        boolean English = jRadioButton1.isSelected();
        try {

            String[] words;
            int start = 0;
            int end = 0;
            boolean active = true;

            if (text.length() == 0) {
                if (English) {
                    instruction.setText("Type or paste text below or Click Open file to load a file!");
                } else {
                    instruction.setText("cofa iqhosha lokuvula ifayile ukuze ubonise ifayile");
                }
                instruction.setForeground(Color.red);
                return;
            } else if (!highlightSet) {
                if (English) {
                    instruction.setText("Click Spellcheck first!");
                } else {
                    instruction.setText("Cofa uSebenzisa kuqala!");
                }
                instruction.setForeground(Color.red);
                return;
            } else if (pos >= text.length()) {
                if (English)
                    instruction
                            .setText("You reached the end of your text. Click the spellcheck button to start over");
                else
                    instruction.setText("Usufike esiphethweni sombhalo wakho. Cofa usebenzisa ukuze uhlole futhi");
                instruction.setForeground(Color.BLUE);
                return;
            } else {
                once.add(currentWord);
            }

            //Input is just a sentence or word
            if (sentences.length < 2) {
                words = text.split(" ");

                //iterate through words
                for (int i = wordNo; i < words.length; i++) {
                    String word = words[i];
                    if (!all.contains(word) && !m.check(word)) {//incorrect word
                        start = text.indexOf(word, pos);
                        end = start + word.length();
                        highlighter.addHighlight(start, end, painter);
                        currentWord = text.substring(start, end);
                        pos += word.length() + 1; //move to next word then stop
                        wordNo += 1;
                        break;
                    }
                    wordNo += 1;
                    pos += word.length() + 1;
                }

                //Input is a two or more lines
            } else {
                while (sentNo < sentences.length && active) {
                    words = sentences[sentNo].split(" ");
                    //iterate through words
                    for (int i = wordNo; i < words.length; i++) {
                        String word = words[i];
                        if (!all.contains(word) && !m.check(word)) {
                            start = text.indexOf(word, pos);
                            end = start + word.length();
                            highlighter.addHighlight(start, end, painter);
                            currentWord = text.substring(start, end);
                            pos += word.length() + 1; //move to next word then stop
                            wordNo += 1;
                            active = false;
                            break;
                        }
                        wordNo += 1;
                        pos += word.length() + 1;

                    }

                    //Jump to next sentence
                    if (wordNo >= words.length) {
                        wordNo = 0;
                        sentNo++;
                    }
                }

            }
        } catch (BadLocationException ex) {
            Logger.getLogger(Spellchecker.class.getName()).log(Level.SEVERE, null, ex);
        }
        if (pos >= text.length() && sentNo >= sentences.length) {
            if (English)
                instruction.setText("You reached the end of your text. Click run to check again");
            else
                instruction.setText("Usufike esiphethweni sombhalo wakho. Cofa usebenzisa ukuze uhlole futhi");
            instruction.setForeground(Color.BLUE);
            currentWord = "";
            return;
        }
        highlightSet = true;
    }//GEN-LAST:event_ignoreOnceActionPerformed

    private void ignoreAllActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_ignoreAllActionPerformed
        // TODO add your handling code here: Ignore All
        /*Adds flagged words into a user dictionary*/
        text = textArea.getText();
        highlighter = textArea.getHighlighter();
        highlighter.removeAllHighlights();
        String[] sentences = text.split("\n");
        //boolean English = jRadioButton1.isSelected();
        try {

            String[] words;
            int start = 0;
            int end = 0;//sentences.length;
            boolean active = true;

            if (text.length() == 0) {
                if (language) {
                    instruction.setText("Type or paste text below or Click Open file to load a file!");
                } else {
                    instruction.setText(
                            "bhala okanye beka umbhalo ngezantsi) okanye (cofa iqhosha lokuvula ifayile ukuze ubonise ifayile");
                }
                instruction.setForeground(Color.red);
                return;
            } /*else if (!highlightSet) {
              if (language) {
                  instruction.setText("Click Run first!");
              } else {
                  instruction.setText("Cofa uSebenzisa kuqala!");
              }
              instruction.setForeground(Color.red);
              return;
              }*/ else if (pos >= text.length()) {
                if (language)
                    instruction.setText("You reached the end of your text. Click spellcheck to check again");
                else
                    instruction.setText("Usufike esiphethweni sombhalo wakho. Cofa usebenzisa ukuze uhlole futhi");
                instruction.setForeground(Color.BLUE);
                if (highlightSet) {
                    if (!all.contains(currentWord)) {
                        all.add(currentWord);
                    }
                    highlightSet = false;
                }
                return;
            } else {
                all.add(currentWord);
            }

            //Input is just a sentence or word
            if (sentences.length < 2) {
                words = text.split(" ");

                //iterate through words
                for (int i = wordNo; i < words.length; i++) {
                    String word = words[i];
                    if (!all.contains(word) && !m.check(word)) {//incorrect word
                        start = text.indexOf(word, pos);
                        end = start + word.length();
                        highlighter.addHighlight(start, end, painter);
                        currentWord = text.substring(start, end);
                        pos += word.length() + 1; //move to next word then stop
                        wordNo += 1;
                        break;
                    }
                    wordNo += 1;
                    pos += word.length() + 1;
                }

                //Input is a two or more lines
            } else {
                while (sentNo < sentences.length && active) {
                    words = sentences[sentNo].split(" ");
                    //iterate through words
                    for (int i = wordNo; i < words.length; i++) {
                        String word = words[i];
                        if (!all.contains(word) && !m.check(word)) {
                            start = text.indexOf(word, pos);
                            end = start + word.length();
                            //highlighter.addHighlight(start, end, painter);
                            currentWord = text.substring(start, end);
                            pos += word.length() + 1; //move to next word then stop
                            wordNo += 1;
                            active = false;
                            break;
                        }
                        wordNo += 1;
                        pos += word.length() + 1;
                    }

                    //Jump to next sentence
                    if (wordNo >= words.length) {
                        wordNo = 0;
                        sentNo++;
                    }
                }

            }
        } catch (BadLocationException ex) {
            Logger.getLogger(Spellchecker.class.getName()).log(Level.SEVERE, null, ex);
        }
        if (pos >= text.length() && sentNo >= sentences.length) {
            if (language)
                instruction.setText("You reached the end of your text. Click run to check again");
            else
                instruction.setText("Usufike esiphethweni sombhalo wakho. Cofa usebenzisa ukuze uhlole futhi");
            instruction.setForeground(Color.BLUE);
            currentWord = "";
            return;
        }
        highlightSet = true;
    }//GEN-LAST:event_ignoreAllActionPerformed

    private void addActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_addActionPerformed
        // TODO add your handling code here: Add to dictionary
        text = textArea.getText();
        highlighter = textArea.getHighlighter();
        highlighter.removeAllHighlights();
        String[] sentences = text.split("\n");
        boolean English = jRadioButton1.isSelected();
        try {

            String[] words;
            int start = 0;
            int end = 0;
            boolean active = true;

            if (text.length() == 0) {
                if (English) {
                    instruction.setText("Type or paste text below or Click Open file to load a file!");
                } else {
                    instruction.setText("cofa iqhosha lokuvula ifayile ukuze ubonise ifayile");
                }
                instruction.setForeground(Color.red);
                return;
            } else if (!highlightSet) {
                if (English) {
                    instruction.setText("Click Run first!");
                } else {
                    instruction.setText("Cofa uSebenzisa kuqala!");
                }
                instruction.setForeground(Color.red);
                return;
            } else if (pos >= text.length()) {
                if (English)
                    instruction.setText("You reached the end of your text. Click run to check again");
                else
                    instruction.setText(
                            "Ufike esiphelweni sombhalo wakho. Cofa iqhosha lokujonga upelo ukuqalela kakutsha");
                instruction.setForeground(Color.BLUE);
                if (highlightSet) {//one word text

                    m.addWord(currentWord);
                    highlightSet = false;
                }
                return;
            } else {
                m.addWord(currentWord);//Writes the word to the user's dictionary
            }

            //Input is just a sentence or word
            if (sentences.length < 2) {
                words = text.split(" ");

                //iterate through words
                for (int i = wordNo; i < words.length; i++) {
                    String word = words[i];
                    if (!all.contains(word) && !m.check(word)) {//incorrect word
                        start = text.indexOf(word, pos);
                        end = start + word.length();
                        highlighter.addHighlight(start, end, painter);
                        currentWord = text.substring(start, end);
                        pos += word.length() + 1; //move to next word then stop
                        wordNo += 1;
                        break;
                    }
                    wordNo += 1;
                    pos += word.length() + 1;
                }

                //Input is a two or more lines
            } else {
                while (sentNo < sentences.length && active) {
                    words = sentences[sentNo].split(" ");
                    //iterate through words
                    for (int i = wordNo; i < words.length; i++) {
                        String word = words[i];
                        if (!all.contains(word) && !m.check(word)) {
                            start = text.indexOf(word, pos);
                            end = start + word.length();
                            highlighter.addHighlight(start, end, painter);
                            currentWord = text.substring(start, end);
                            pos += word.length() + 1; //move to next word then stop
                            wordNo += 1;
                            active = false;
                            break;
                        }
                        wordNo += 1;
                        pos += word.length() + 1;
                    }

                    //Jump to next sentence
                    if (wordNo >= words.length) {
                        wordNo = 0;
                        sentNo++;
                    }
                }

            }
        } catch (BadLocationException ex) {
            Logger.getLogger(Spellchecker.class.getName()).log(Level.SEVERE, null, ex);
        }
        //  boolean English = jRadioButton1.isSelected();
        if (pos >= text.length() && sentNo >= sentences.length) {
            if (English)
                instruction.setText("You reached the end of your text. Click run to check again");
            else
                instruction.setText(
                        "Ufike esiphelweni sombhalo wakho. Cofa iqhosha lokujonga upelo ukuqalela kakutsha");
            instruction.setForeground(Color.BLUE);
            currentWord = "";
            return;
        }
        highlightSet = true;
    }//GEN-LAST:event_addActionPerformed

    private void closeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_closeActionPerformed
        // Add user dictionary to the dictionary
        System.exit(0);
    }//GEN-LAST:event_closeActionPerformed

    private void clearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_clearActionPerformed
        // TODO add your handling code here:
        //Resets globals used by other buttons such as ignoreAll
        boolean English = jRadioButton1.isSelected();
        if (textArea.getText().length() == 0) {
            if (English)
                instruction.setText("Nothing to clear");
            else
                instruction.setText("Akukho okucishwayo");
            instruction.setForeground(Color.red);
        } else {
            if (English)
                instruction.setText("Text cleared! Start over.");
            else
                instruction.setText("Umbhalo usucishiwe! Qala kabusha.");
            instruction.setForeground(Color.BLUE);
            pos = 0;
            sentNo = 0;
            wordNo = 0;
            textArea.setText("");
        }

    }//GEN-LAST:event_clearActionPerformed

    private void textAreaAncestorResized(java.awt.event.HierarchyEvent evt) {//GEN-FIRST:event_textAreaAncestorResized
        // TODO add your handling code here:
    }//GEN-LAST:event_textAreaAncestorResized

    private void textAreaKeyTyped(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_textAreaKeyTyped
        // TODO add your handling code here:
        boolean English = jRadioButton1.isSelected();
        int len = textArea.getText().length();
        if (highlightSet && len != 0) {
            if (English) {
                instruction.setText("Spellcheck to check changes or to continue to next error");
            } else {
                instruction.setText("Khangela upelo kwezinguquko ozenzile noma udlulele ephutheni elilandelayo ");
            }
            instruction.setForeground(Color.blue);
            highlighter.removeAllHighlights();
            highlightSet = false;
        } else if (len == 0) {
            if (English) {
                instruction.setText("Type or paste text below or Click Open file to load a file!");
            } else {
                instruction.setText(
                        "Bhala noma namathelisela umbhalo olapha ngezansi noma > Cofa kuFayili > Vula ifayela..ukuze ufake ifayela.");
            }
            instruction.setForeground(Color.blue);
            if (highlightSet) {
                highlightSet = false;
            }
        } else {
            if (English) {
                instruction.setText("Spellcheck to check for errors");
            } else {
                instruction.setText("Cofa iSpellcheck ukuze ukhangele upelo");
            }
            instruction.setForeground(Color.blue);
        }
    }//GEN-LAST:event_textAreaKeyTyped

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        // Open file from machine
        int returnVal = fileChooser.showOpenDialog(this);
        boolean English = jRadioButton1.isSelected();
        if (English)
            instruction.setText("Spellcheck to check for errors");
        else
            instruction.setText("Cofa uSebenzisa ukuze uhlole amaphutha");
        instruction.setForeground(Color.BLUE);
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            File file = fileChooser.getSelectedFile();
            String name = file.getName();
            String ext = name.substring(name.indexOf("."), name.length());

            try {
                // What to do with the file, e.g. display it in a TextArea
                if (highlightSet) {
                    highlighter.removeAllHighlights();
                }
                if (name.endsWith(".docx")) {
                    FileInputStream fis = new FileInputStream(file.getAbsolutePath());
                    XWPFDocument docx = new XWPFDocument(fis);
                    List<XWPFParagraph> pars = docx.getParagraphs();
                    String toDisplay = "";
                    for (XWPFParagraph para : pars) {
                        toDisplay += para.getText() + "\n";
                    }

                    textArea.setText(toDisplay);
                    text = textArea.getText();
                } else {
                    textArea.read(new FileReader(file.getAbsolutePath()), null);
                    text = textArea.getText(); //for controlling the displayed text
                }
            } catch (IOException ex) {
                System.out.println("problem accessing file" + file.getAbsolutePath());
            }
        }
        //Resets globals used by other buttons such as ignoreAll
        pos = 0;
        sentNo = 0;
        wordNo = 0;

    }//GEN-LAST:event_jButton1ActionPerformed

    private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButton1ActionPerformed
        // TODO add your handling code here:
        boolean English = jRadioButton1.isSelected();
        if (English) {
            jButton1.setText("Open file");
            jButton2.setText("Save file");
            jButton3.setText("Help");
            jButton4.setText("Exit");
            //  jLabel1.setText("*Hover over buttons to view tool tips or click help for instructions"); //hover over
            ignoreAll.setText("Ignore All");
            ignoreOnce.setText("Ignore Once");
            label1.setText("Interface language");
            //jLabel3.setText("Perform error detection for:");

            //tooltip texts
            jButton1.setToolTipText("Open file");
            jButton2.setToolTipText("Save file to machine");
            jButton3.setToolTipText("Open help menu");
            jButton4.setToolTipText("Close application");
            ignoreAll.setToolTipText("Ignore all errors");
            ignoreOnce.setToolTipText("Ignore error once");
            run.setToolTipText("Check spelling errors");
            clear.setToolTipText("Clear textbox");
            add.setToolTipText("Add word to dictionary");

        }
    }//GEN-LAST:event_jRadioButton1ActionPerformed

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        // Save file being edited to machine
        int len = textArea.getText().length();
        boolean English = jRadioButton1.isSelected();
        if (len == 0) {
            if (English) {
                instruction.setText("You are trying to save an empty file!");
                instruction.setForeground(Color.RED);
            } else {
                instruction.setText("Uzama ukugcina ifayile engenanto!");
                instruction.setForeground(Color.RED);
            }
            //System.out.println(data);
        } else {
            int returnVal = fileChooser.showSaveDialog(this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                File file = fileChooser.getSelectedFile();
                try {
                    // What to do with the file, e.g. display it in a TextArea
                    if (highlightSet) {
                        highlighter.removeAllHighlights();
                    }
                    if (file.getName().endsWith(".docx")) {
                        XWPFDocument document = new XWPFDocument();
                        XWPFParagraph tmpParagraph = document.createParagraph();
                        XWPFRun tmpRun = tmpParagraph.createRun();
                        tmpRun.setText(textArea.getText());
                        tmpRun.setFontSize(12);
                        document.write(new FileOutputStream(new File(file.getPath())));
                    } else {
                        textArea.write(new FileWriter(file.getAbsolutePath()));//this file has no extension
                    }
                } catch (IOException ex) {
                    System.out.println("problem accessing file" + file.getAbsolutePath());
                }
            }
        }

    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
        // User instructions
        boolean English = jRadioButton1.isSelected();
        try {
            if (English) {
                InputStream ins = IsiXhosa_Spellchecker.class.getResourceAsStream("resources/Instructions.txt");
                BufferedReader insReader = new BufferedReader(new InputStreamReader(ins));
                textarea.read(insReader, ins);
                helpWindow.setVisible(true);

            } else {
                InputStream ins = IsiXhosa_Spellchecker.class
                        .getResourceAsStream("resources/XhosaInstructions.txt");
                BufferedReader insReader = new BufferedReader(new InputStreamReader(ins));
                textarea.read(insReader, ins);
                helpWindow.setVisible(true);

            }

        } catch (IOException ex) {
            Logger.getLogger(Spellchecker.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println("File not found");
        }

    }//GEN-LAST:event_jButton3ActionPerformed

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton4ActionPerformed
        // Exit button handler and saves to dictionary updates the trigrams aswell

        System.exit(0);
    }//GEN-LAST:event_jButton4ActionPerformed

    private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButton2ActionPerformed
        // TODO add your handling code here:
        boolean isXhosa = jRadioButton2.isSelected();

        if (isXhosa) {
            jButton1.setText("Vula ifayile");
            jButton2.setText("Gcona ifayile");
            jButton3.setText("Uncedo");
            jButton4.setText("Phuma");
            ignoreAll.setText("Ugahoyi konke");
            ignoreOnce.setText("Ungahoyi inye");
            label1.setText("Ulwimi loxwebhu");
            //jLabel3.setText("Khangela imiphosiso ye:");
            //            jLabel1.setText(""); //hover over

            //tooltip texts
            jButton1.setToolTipText("Vula ifayile");
            jButton2.setToolTipText("Gcona ifayile");
            jButton3.setToolTipText("Thola Uncedo");
            jButton4.setToolTipText("Phuma");
            run.setToolTipText("jonga impazamo yokupela kwa magama");
            clear.setToolTipText("Cima  amagama");
            add.setToolTipText("Faka eligama kwi dikshinari");
            ignoreAll.setToolTipText("Susihoya isiphene");
            ignoreOnce.setToolTipText("uzihoya zonke iziphene");

            // jLabel1.setToolTipText(""); //hover over

        } else {

        }
    }//GEN-LAST:event_jRadioButton2ActionPerformed

    /*
     * Checks for all errors
     */
    private boolean noErrors() {
        String[] sentences = textArea.getText().split("\n");
        String[] words;
        int sentence = 0;

        /*Check for zulu errors begin*/
        if (sentences.length < 2) {
            words = textArea.getText().split(" ");
            //iterate through words
            for (String word : words) {
                if (!all.contains(word) && !m.check(word)) {//incorrect word
                    return false;
                }
            }
            //Input is a two or more lines
        } else {
            while (sentence < sentences.length) {
                words = sentences[sentence].split(" ");
                //iterate through words
                for (String word : words) {
                    if (!all.contains(word) && !m.check(word)) {
                        return false;
                    }
                }
                sentence++;
            }
        }
        return true;
        /**Check for zulu errors end*/
    }

    private class PopupListener extends MouseAdapter {

        public void mousePressed(MouseEvent e) {
            showPopup(e);
        }

        public void mouseReleased(MouseEvent e) {
            showPopup(e);
        }

        private void showPopup(MouseEvent e) {
            if (e.isPopupTrigger()) {
                popup.show(e.getComponent(), e.getX(), e.getY());
            }
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Spellchecker.class.getName()).log(java.util.logging.Level.SEVERE,
                    null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Spellchecker.class.getName()).log(java.util.logging.Level.SEVERE,
                    null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Spellchecker.class.getName()).log(java.util.logging.Level.SEVERE,
                    null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Spellchecker.class.getName()).log(java.util.logging.Level.SEVERE,
                    null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Spellchecker().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton add;
    private javax.swing.JButton clear;
    private javax.swing.JButton close;
    private javax.swing.JFileChooser fileChooser;
    private javax.swing.JButton ignoreAll;
    private javax.swing.JButton ignoreOnce;
    private javax.swing.JLabel instruction;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSeparator jSeparator1;
    private java.awt.Label label1;
    private javax.swing.JPopupMenu popup;
    private javax.swing.JButton run;
    private javax.swing.JTextArea textArea;
    // End of variables declaration//GEN-END:variables
    private javax.swing.JFrame helpWindow;
    private JPanel mainPanel;
    private JTextArea textarea;
}