BufferPanel.java

/**
 *
 */
package com.jediterm.terminal.debug;

import com.jediterm.terminal.ui.TerminalSession;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;


public class BufferPanel extends JPanel {
  public BufferPanel(final TerminalSession terminal) {
    super(new BorderLayout());
    final JTextArea area = new JTextArea();
    area.setEditable(false);

    add(area, BorderLayout.NORTH);

    final DebugBufferType[] choices = DebugBufferType.values();

    final JComboBox chooser = new JComboBox(choices);
    add(chooser, BorderLayout.NORTH);

    area.setFont(Font.decode("Monospaced-14"));
    add(new JScrollPane(area), BorderLayout.CENTER);

    class Updater implements ActionListener, ItemListener {
      private String myLastUpdate = "";

      void update() {
        final DebugBufferType type = (DebugBufferType) chooser.getSelectedItem();
        final String text = terminal.getBufferText(type);
        if (!text.equals(myLastUpdate)) {
          area.setText(text);
          myLastUpdate = text;
        }
      }

      public void actionPerformed(final ActionEvent e) {
        update();
      }

      public void itemStateChanged(final ItemEvent e) {
        update();
      }
    }
    final Updater up = new Updater();
    chooser.addItemListener(up);
    final Timer timer = new Timer(1000, up);
    timer.setRepeats(true);
    timer.start();
  }
}