package events;

/*
* MouseEventDemo.java
*/

import java.awt.GridLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;

import javax.swing.*;

public class MouseEventDemo extends JPanel
    implements MouseListener {
  BlankArea blankArea;
  JTextArea textArea;
  static final String NEWLINE = System.getProperty("line.separator");
  
  public static void main(String[] args) {
    /* Use an appropriate Look and Feel */
    try {
      //UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
      //UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
      UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
    } catch (UnsupportedLookAndFeelException ex) {
      ex.printStackTrace();
    } catch (IllegalAccessException ex) {
      ex.printStackTrace();
    } catch (InstantiationException ex) {
      ex.printStackTrace();
    } catch (ClassNotFoundException ex) {
      ex.printStackTrace();
    }
    /* Turn off metal's use of bold fonts */
    UIManager.put("swing.boldMetal", Boolean.FALSE);
    //Schedule a job for the event dispatch thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
  
  /**
   * Create the GUI and show it.  For thread safety,
   * this method should be invoked from the
   * event dispatch thread.
   */
  private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("MouseEventDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    //Create and set up the content pane.
    JComponent newContentPane = new MouseEventDemo();
    newContentPane.setOpaque(true); //content panes must be opaque
    frame.setContentPane(newContentPane);
    
    //Display the window.
    frame.pack();
    frame.setVisible(true);
  }
  
  public MouseEventDemo() {
    super(new GridLayout(0,1));
    blankArea = new BlankArea(Color.YELLOW);
    add(blankArea);
    textArea = new JTextArea();
    textArea.setEditable(false);
    JScrollPane scrollPane = new JScrollPane(textArea);
    scrollPane.setVerticalScrollBarPolicy(
        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    scrollPane.setPreferredSize(new Dimension(200, 75));
    add(scrollPane);
    
    //Register for mouse events on blankArea and the panel.
    blankArea.addMouseListener(this);
    addMouseListener(this);
    setPreferredSize(new Dimension(450, 450));
    setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
  }
  
  void eventOutput(String eventDescription, MouseEvent e) {
    textArea.append(eventDescription + " detected on "
        + e.getComponent().getClass().getName()
        + "." + NEWLINE);
    textArea.setCaretPosition(textArea.getDocument().getLength());
  }
  
  public void mousePressed(MouseEvent e) {
    eventOutput("Mouse pressed (# of clicks: "
        + e.getClickCount() + ")", e);
  }
  
  public void mouseReleased(MouseEvent e) {
    eventOutput("Mouse released (# of clicks: "
        + e.getClickCount() + ")", e);
  }
  
  public void mouseEntered(MouseEvent e) {
    eventOutput("Mouse entered", e);
  }
  
  public void mouseExited(MouseEvent e) {
    eventOutput("Mouse exited", e);
  }
  
  public void mouseClicked(MouseEvent e) {
    eventOutput("Mouse clicked (# of clicks: "
        + e.getClickCount() + ")", e);
  }
}