import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class StyleOptionsPanel extends JPanel
{
    private JLabel saying, fontPrompt;
    private JCheckBox bold, italic;
    private JTextField enterSize;
    private int fontSize, style;
    private JPanel panelCheckBox, panelTextField;

    //-----------------------------------------------------------------
    //  Sets up a panel with a label and some check boxes that
    //  control the style of the label's font.
    //-----------------------------------------------------------------
    public StyleOptionsPanel()
    {
	fontSize = 36;
	style = Font.PLAIN;
	saying = new JLabel ("Say it with style!");
	saying.setFont (new Font ("Helvetica", style, fontSize));

	fontPrompt = new JLabel("Enter font size: ");
	enterSize = new JTextField (4);

	bold = new JCheckBox ("Bold");
	bold.setBackground (Color.cyan);
	italic = new JCheckBox ("Italic");
	italic.setBackground (Color.cyan);

	panelCheckBox = new JPanel();
	panelCheckBox.add(bold);
	panelCheckBox.add(italic);
	panelCheckBox.setBackground (Color.cyan);

	StyleListener listener = new StyleListener();
	bold.addItemListener (listener);
	italic.addItemListener (listener);

	panelTextField = new JPanel();
	panelTextField.add(fontPrompt);
	panelTextField.add(enterSize);
	panelTextField.setBackground (Color.cyan);

	enterSize.addActionListener (new EnterFontListener());

	add (saying);
	add (panelCheckBox);
	add (panelTextField);

	setBackground (Color.cyan);
	setPreferredSize (new Dimension(300, 100));
    }

    //*****************************************************************
    //  Represents the listener for both check boxes.
    //*****************************************************************
   private class StyleListener implements ItemListener
   {
       //--------------------------------------------------------------
       //  Updates the style of the label font style.
       //--------------------------------------------------------------
       public void itemStateChanged (ItemEvent event)
       {
	   style = Font.PLAIN;

	   if (bold.isSelected()) // true when bold checkbox is checked
	       style = Font.BOLD;

	   if (italic.isSelected())
	       style += Font.ITALIC;

	   saying.setFont (new Font ("Helvetica", style, fontSize));
       }
   }

    private class EnterFontListener implements ActionListener{

	public void actionPerformed(ActionEvent event){
	    fontSize = Integer.parseInt(enterSize.getText());
	    saying.setFont (new Font("Helvetica", style, fontSize));
	}
    }
}