/*
 * by De Franciscis Dimitri
 *
 * megadix@gmail.com
 */

import java.util.regex.Pattern;
import java.util.LinkedList;

LinkedList history = new LinkedList();

selectLinesContainingRegex() {

  dialog = new JDialog(view, "Select lines that match regex", false);
  content = new JPanel();
  dialog.setContentPane(content);

  fieldPanel = new JPanel();
  regexLabel = new JLabel("Regex:");
  fieldPanel.add(regexLabel);
  regexField = new HistoryTextField("org.megadix.jedit.macro.selectLinesContainingRegex.regex");
  regexField.setColumns(20);
  fieldPanel.add(regexField);
  content.add(fieldPanel);  
  
  buttonPanel = new JPanel();
  buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.X_AXIS));
  buttonPanel.add(Box.createGlue());
  ok = new JButton("OK");
  cancel = new JButton("Cancel");
  ok.setPreferredSize(cancel.getPreferredSize());
  dialog.getRootPane().setDefaultButton(ok);
  buttonPanel.add(ok);
  buttonPanel.add(Box.createHorizontalStrut(6));
  buttonPanel.add(cancel);
  buttonPanel.add(Box.createGlue());
  content.add(buttonPanel, "South");
  
  // register this method as an ActionListener for
  // the buttons and text fields (see the section called "Register the Action Listeners")
  ok.addActionListener(this);
  cancel.addActionListener(this);
  regexField.addActionListener(this);

  // locate the dialog in the center of the
  // editing pane and make it visible (see the section called "Make the Dialog Visible")
  dialog.pack();
  dialog.setLocationRelativeTo(view);
  dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
  dialog.setVisible(true);

  // this method will be called when a button is clicked
  // or when ENTER is pressed (see the section called "The Action Listener")
  void actionPerformed(e) {
      if(e.getSource() != cancel) {
          processText();
      }
      dialog.dispose();
  }
  
  // this is where the work gets done to insert
  // the prefix and suffix (see the section called "Get the User's Input")
  void processText() {
      regex = regexField.getText();
      if(regex.length() == 0)
          return;
      
      regexField.addCurrentToHistory();
      
      pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
      int count = 0;
      for(int i = 0; i < textArea.getLineCount(); i++){
        String line = textArea.getLineText(i);
        m = pattern.matcher(line);
        if (m.find()) {
          lineStart = textArea.getBuffer().getLineStartOffset(i);
          lineEnd = textArea.getBuffer().getLineEndOffset(i);
          if (lineStart < lineEnd) {
            Selection range = new Selection.Range(lineStart, lineEnd - 1);
            textArea.addToSelection(range);
            count++;
          }
        }
      }
  }
}

selectLinesContainingRegex();