/*
 *  File:  ListTest.java
 *
 *  Create a scrolling list that allows only one item to be selected.
 *  Uses ListSelectionEvents when an item is selected.
 *  Also demonstrates the Toolkit class to get Font information from
 *  the browser.
 *
 *  Copyright:  Northeast Parallel Architectures Center
 *  
 */

import javax.swing.*; 

import javax.swing.JComponent.*;
import java.awt.Color;
import java.awt.Toolkit;
import java.awt.Font;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class ListTest extends JApplet implements ListSelectionListener{//ItemListener,

  // Allow five visible items in the list, but 
  // disallow multiple selections:

  private JList fontList;

  //No default scrolling .SO scrollPane must be added
  private JScrollPane scrollPane ;
 
  private String fontString;
  private JLabel fontLabel;
  private Font f = new Font ("Dialog", Font.PLAIN, 18);

  public void init() {
	getContentPane().setLayout(new FlowLayout());
    setBackground( Color.white );
    setFont (f);
	
    // Color the scrolling list:
    Color lightBlue = new Color( 0xB0, 0xE0, 0xE6 );
    Color  navyBlue = new Color( 0x19, 0x19, 0x70 );

    
    // Get list of system fonts:
    Toolkit toolkit = Toolkit.getDefaultToolkit();
    String fonts[] = toolkit.getFontList();
    fontList = new JList(fonts);
	scrollPane = new JScrollPane(fontList); 

    
	fontList.setBackground( lightBlue );
    fontList.setForeground(  navyBlue );
	
	//Row count that will be visible
    fontList.setVisibleRowCount(3);
    
	//Single selection only allowed
	fontList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

		
	// Construct a text label:
    fontString  = "           Once in a galaxy ";
    fontString += "far, far away!             ";
    fontLabel = new JLabel( fontString, JLabel.CENTER );
	
    getContentPane().add(scrollPane);
    getContentPane().add(fontLabel);

    // Determine default font:
    String defaultFontName = fontLabel.getFont().getName();
    
    // Select default font in scrolling list:
    for ( int i = 0; i < fonts.length; i++ ) {
      if ( defaultFontName.equals( fonts[i] ) ) {
        fontList.setSelectedIndex(i); break;
      }
    }
    // Register the applet to listen for events:
	fontList.addListSelectionListener(this);
    
  }

  public void valueChanged(ListSelectionEvent event){
  	String fontName = (String)fontList.getSelectedValue();
    int style = Font.BOLD;
    int size = fontLabel.getFont().getSize();
    fontLabel.setFont( new Font( fontName, style, size ) );
    fontLabel.setText(fontString );
	update(this.getGraphics());
    showStatus( "You chose " + fontName + "!" );
 }
  
}