/* * DisplayFrame.java * * Created on April 22, 2005, 10:37 AM */ package lab12; import java.io.*; import java.util.StringTokenizer; import lab07.Queue; /** * * @author jkdawg */ public class DisplayFrame extends javax.swing.JFrame { private WordIndex index = new WordIndex (); /** Creates new form DisplayFrame */ public DisplayFrame() { initComponents(); } /** This method opens the file specified by the fully qualified * filename parameter and scans it to build a word index. * @param fullname The complete filename (including full directory path). */ public void buildIndex (String fullname) { clear (); index.removeAll (); int lineNumber = 0; try { FileInputStream stream = new FileInputStream (fullname); BufferedReader reader = new BufferedReader (new InputStreamReader (stream)); String nextLine = reader.readLine (); while (nextLine != null) { lineNumber++; textDisplayArea.append (lineNumber + ": " + nextLine + "\n"); StringTokenizer tokenizer = new StringTokenizer (nextLine, ".,;:?!-()\"\' \t"); while (tokenizer.hasMoreTokens ()) { String word = tokenizer.nextToken(); word = word.toLowerCase (); index.insert (new IndexItem (word, lineNumber)); } nextLine = reader.readLine (); } reader.close (); loadWordIndex (); } catch (IOException e) { ErrorDialog dialog = new ErrorDialog (this, true); dialog.setText ("Unable to open file " + fullname); dialog.setVisible (true); } } public void loadWordIndex () { Queue queue = index.listAscending(); indexDisplayArea.setText (""); while (!queue.isEmpty()) { indexDisplayArea.append (((IndexItem) queue.remove()).toString() + "\n"); } indexDisplayArea.append ("\nFile contains " + index.size () + " distinct words\n"); } /** Clears the contents of both center panel compartments (file * contents and word index). */ public void clear () { textDisplayArea.setText (""); indexDisplayArea.setText (""); index.removeAll(); fldFilename.setText(""); } /** 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. */ private void initComponents() {//GEN-BEGIN:initComponents controlPanel = new javax.swing.JPanel(); lblDirectory = new javax.swing.JLabel(); fldDirectory = new javax.swing.JTextField(); lblFilename = new javax.swing.JLabel(); fldFilename = new javax.swing.JTextField(); btnStart = new javax.swing.JButton(); btnClear = new javax.swing.JButton(); btnExit = new javax.swing.JButton(); titlePanel = new javax.swing.JPanel(); lblTitle = new javax.swing.JLabel(); centerPanel = new javax.swing.JPanel(); textScrollPane = new javax.swing.JScrollPane(); textDisplayArea = new javax.swing.JTextArea(); indexScrollPane = new javax.swing.JScrollPane(); indexDisplayArea = new javax.swing.JTextArea(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setTitle("Lab 12: Word Index Generator"); controlPanel.setPreferredSize(new java.awt.Dimension(685, 42)); lblDirectory.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblDirectory.setText("Directory:"); controlPanel.add(lblDirectory); fldDirectory.setColumns(20); fldDirectory.setMinimumSize(new java.awt.Dimension(11, 28)); fldDirectory.setText("samples"); controlPanel.add(fldDirectory); lblFilename.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblFilename.setText("Filename:"); controlPanel.add(lblFilename); fldFilename.setColumns(10); fldFilename.setMinimumSize(new java.awt.Dimension(11, 28)); fldFilename.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { fldFilenameActionPerformed(evt); } }); controlPanel.add(fldFilename); btnStart.setText("Start"); btnStart.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnStartActionPerformed(evt); } }); controlPanel.add(btnStart); btnClear.setText("Clear"); btnClear.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnClearActionPerformed(evt); } }); controlPanel.add(btnClear); btnExit.setText("Exit"); btnExit.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnExitActionPerformed(evt); } }); controlPanel.add(btnExit); getContentPane().add(controlPanel, java.awt.BorderLayout.SOUTH); lblTitle.setFont(new java.awt.Font("Microsoft Sans Serif", 1, 18)); lblTitle.setText("Word Index Generator"); titlePanel.add(lblTitle); getContentPane().add(titlePanel, java.awt.BorderLayout.NORTH); centerPanel.setLayout(new java.awt.GridLayout(2, 1)); textScrollPane.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(204, 204, 204))); textScrollPane.setViewportView(textDisplayArea); centerPanel.add(textScrollPane); indexScrollPane.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(204, 204, 204))); indexScrollPane.setViewportView(indexDisplayArea); centerPanel.add(indexScrollPane); getContentPane().add(centerPanel, java.awt.BorderLayout.CENTER); java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize(); setBounds((screenSize.width-800)/2, (screenSize.height-650)/2, 800, 650); }//GEN-END:initComponents private void fldFilenameActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fldFilenameActionPerformed loadFile(); }//GEN-LAST:event_fldFilenameActionPerformed private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnClearActionPerformed clear(); }//GEN-LAST:event_btnClearActionPerformed private void btnStartActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnStartActionPerformed loadFile(); }//GEN-LAST:event_btnStartActionPerformed private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnExitActionPerformed setVisible(false); dispose(); System.exit(0); }//GEN-LAST:event_btnExitActionPerformed /** * @param args the command line arguments */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new DisplayFrame().setVisible(true); } }); } private void loadFile () { String fullname = fldDirectory.getText() + System.getProperty("file.separator") + fldFilename.getText(); buildIndex (fullname); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton btnClear; private javax.swing.JButton btnExit; private javax.swing.JButton btnStart; private javax.swing.JPanel centerPanel; private javax.swing.JPanel controlPanel; private javax.swing.JTextField fldDirectory; private javax.swing.JTextField fldFilename; private javax.swing.JTextArea indexDisplayArea; private javax.swing.JScrollPane indexScrollPane; private javax.swing.JLabel lblDirectory; private javax.swing.JLabel lblFilename; private javax.swing.JLabel lblTitle; private javax.swing.JTextArea textDisplayArea; private javax.swing.JScrollPane textScrollPane; private javax.swing.JPanel titlePanel; // End of variables declaration//GEN-END:variables }