import java.awt.*;
import java.text.*;
import java.util.*;

/** This class provides a GUI: a window with several int fields, double 
 fields, and text fields. The current version has 0 int fields, 1 double
 field, and 6 String fields. Change the constructor call in method main to
 change the number of fields. It also has a choice box.<br><br>
 
 Whenever the button in the window is pressed, method buttonPressed is called.
 Place code in this method to read the fields, calculate, and store values
 back in the fields. The current version deals with locales, as discussed in 
 method buttonPressed.
 */

public class MyJLiveWindow extends JLiveWindow {
    
    /** Place code in the body of this method to process fields and store 
     results in fields. Use
     
     getIntField(i)     for the number in int    field i; 0 is first field
     getdoubleField(i)  for the number in double field i; 0 is first field
     getStringField(i)  for the number in String field i; 0 is first field
     setIntField(i,v);      to store int value v in field i
     setDoubleField(i,v);   to store double value v in field i
     setStringField(i,v);   to store String value v in field i
     
     /** Process click of button titled "Ready!" */
    public Object buttonPressed() {
        /* Using the selected locale, Place the value in double 
         * field 0 in
         String field 0 as a decimal number
         String field 1 as a currency
         String field 2 as a percentage 
         */
         double v= getDoubleField(0);
         print3(v);
        
         // Place here any code that you are asked to write 
        
         
         return null;
    }
    
    /** Create an instance of me and show it */
    public static void main(String args[]) {
        // The first argument to MyJLiveWindow is the number of int fields,
        // the second argument is the number of double fields, and
        // the third argument is the number of text (or String) fields.
        MyJLiveWindow testJLiveWindow= new MyJLiveWindow(0, 1, 6);
        testJLiveWindow.showWindow();
    }
    
    /** Create my window with<br>
     max( min(i,MAX_FIELDS), 0) integer fields,<br>
     max( min(d,MAX_FIELDS), 0) double fields, and<br>
     max( min(s,MAX_FIELDS), 0) String fields<br>
     and a "ready" button */
    public MyJLiveWindow(int i, int d, int s) {
        super(i, d, s);
    }
    
    /** If j < 0, print d in all available currencies<br>
     If j = 0, print d in all available percentages<br>
     If j > 0, print d in all available number formats */
    public static void printInAll(double d, int j) {
        Locale[] locales= NumberFormat.getAvailableLocales();
        NumberFormat form= null;
        
        if (j < 0)  System.out.println("Currencies");
        if (j == 0) System.out.println("Percentages");
        if (j > 0)  System.out.println("Decimal format");
        // inv: the information for locales[0..i-1] has been printed
        for (int i= 0; i != locales.length; i= i+1) {
            if (locales[i].getCountry().length() == 0) {
                continue; // skip --it's a language only
            }
            System.out.print(locales[i].getDisplayName());
            if (j < 0)  form= NumberFormat.getCurrencyInstance(locales[i]);
            if (j == 0) form= NumberFormat.getPercentInstance(locales[i]);
            if (j > 0)  form= NumberFormat.getInstance(locales[i]);
            
            try {
                System.out.print(": "  + form.format(d));
            } catch (IllegalArgumentException iae) {}
            try {
                System.out.println(" -> " + form.parse(form.format(d)));
            } catch (ParseException pe) {}     
        }    
    }
    
    /** Place v as a decimal number, currency, and percentage in the
     first three String fields, using the selected locale */
    public void print3(double v) {
        try {
            Locale loc= getLocale();
            
            NumberFormat form= NumberFormat.getInstance(loc);
            setStringField(0, "Decimal:   " + form.format(v));
            
            form= NumberFormat.getCurrencyInstance(loc);
            setStringField(1, "Currency:   " + form.format(v));
            
            form= NumberFormat.getPercentInstance(loc);
            setStringField(2, "Percentage: " + form.format(v));
            
        } catch (IllegalArgumentException iae) {}
        
    }
    
    
    
    
    
}