//
// another example of the Java AWT, showing use of Choice and Font
//      classes.
// see class definition and main method for details.
//
import java.awt.* ;
import java.awt.event.* ;

//
// a ChooseFont object is a CloseableFrame containing three Choice
//      objects used to select a font name (from those provided by
//      the default toolkit), a font style (plain, bold, or italic),
//      and a font size, plus two Label objects.  when a selection is 
//      made, the three Choice objects are used to generate a Font,
//      which is then used to set the Font for the two Label objects.
//
class ChooseFont extends CloseableFrame implements ItemListener {

        Choice fontName ;
        Choice fontStyle ;
        Choice fontSize ;

        Label display1 ;
        Label display2 ;

        ChooseFont(String text) {

                super("ChooseFont") ;
                setLayout(new BorderLayout()) ;
                
                // make two Label objects and group vertically.
                Panel dPanel = new Panel() ;
                dPanel.setLayout(new GridLayout(0, 1)) ;
                add(dPanel, "Center") ;
                display1 = new Label(text.toUpperCase(), Label.CENTER) ;
                display2 = new Label(text.toLowerCase(), Label.CENTER) ;
                dPanel.add(display1) ;
                dPanel.add(display2) ;

                // group three Choice objects horizontally.
                Panel cPanel = new Panel() ;
                cPanel.setLayout(new FlowLayout()) ;
                add(cPanel, "North") ;

                // make Choice object for font name -- get names 
                //      provided by this frame's toolkit.
                fontName = new Choice() ;
                String[] names = getToolkit().getFontList() ;
                for (int i = 0 ; i < names.length ; i++) 
                        fontName.add(names[i]) ;
                fontName.addItemListener(this) ;
                cPanel.add(fontName) ;

                // make Choice object for font style.
                fontStyle = new Choice() ;
                fontStyle.add("PLAIN") ;
                fontStyle.add("BOLD") ;
                fontStyle.add("ITALIC") ;
                fontStyle.addItemListener(this) ;
                cPanel.add(fontStyle) ;

                // make Choice object for font size.
                fontSize = new Choice() ;
                for (int i = 6 ; i < 20 ; i+=2)
                        fontSize.add("" + i) ;
                fontSize.addItemListener(this) ;
                cPanel.add(fontSize) ;
                
                pack() ;
                show() ;

        }

        // invoked when user makes a selection.
        public void itemStateChanged(ItemEvent e) {

                // get font name.
                String name = fontName.getSelectedItem() ;

                // get font style and convert to one of Font class's
                //      constants.
                String styleTxt = fontStyle.getSelectedItem() ;
                int style = 0 ;
                if (styleTxt.equals("PLAIN")) 
                        style = Font.PLAIN ;
                else if (styleTxt.equals("BOLD")) 
                        style = Font.BOLD ;
                else if (styleTxt.equals("ITALIC")) 
                        style = Font.ITALIC ;

                // get font size and convert to int.
                int size = Integer.parseInt(
                                fontSize.getSelectedItem()) ;

                // set font for Label objects.
                Font f = new Font(name, style, size) ;
                display1.setFont(f) ;
                display2.setFont(f) ;
        }

        //
        // ---- main ---------------------------------------------------
        //
        // command-line argument (optional) is string to display.
        //
        public static void main(String[] args) {

                String text = "Hello!" ;
                if (args.length > 0)
                        text = args[0] ;

                ChooseFont c = new ChooseFont(text) ;
        }
}