/************************************************************************\
NUMBERS LIST

This program creates an AWT GUI form,
inputs numbers, stores them in a list,
and then adds up all the numbers.

\************************************************************************/

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

TextField numBox = new TextField("        ");
Button b1 = new Button("Add to list");
java.awt.List numList = new java.awt.List(10);
Button b2 = new Button("Total");
Font big = new Font("Arial",0,36);

void setup()
{
   size(300,500);       // change size of standard window
   b1.setFont(big);     // change font on the Button b1
   b2.setFont(big);     // change font on Button b2
   numBox.setFont(big);
   numList.setFont(new Font("Arial",0,24));
   numBox.setText("");
   add(numBox);
   add(b1);             // display Button b1
   add(numList);
   add(b2);             // display Button b2
}

boolean action(java.awt.Event evt, Object src)
{
   Object source = evt.target;      // this is the Button that was clicked

   if(source==b1)                  
   {
      String value = numBox.getText();  // copy text from TextField
      numList.add(value);               // copy number into numList
      numBox.setText("");               // clear the TextField
      numBox.requestFocus();            // move cursor to TextField
   }    
   
   if(source==b2)                       // [Total] Button
   {
      output("Total = " + total());
      if( numList.getItemCount() != 0)
      { output("Average = " + (total() / numList.getItemCount())); } 
   }

   return true;
}

double total()
{
   double sum = 0;
   int count = numList.getItemCount();     // count items in numList
   
   for(int c = 0; c < count; c = c+1)      // loop through all items
   {
      String value = numList.getItem(c);        // get item as String
      double num = Double.parseDouble(value);   // convert String to double
      sum = sum + num;                          // add to total
   }
   
   return sum;
}

//==== IBIO standard Input / Output functions ====//

   public void output(String message)
   {  javax.swing.JOptionPane.showMessageDialog(this,message);  }

   public void outputString(String message)
   {  output(message);  }

   public void output(char info)
   {  output(info + ""); }

   public void output(byte info)
   {  output(info + ""); }

   public void output(int info)
   {  output(info + ""); }

   public void output(long info)
   {  output(info + ""); }

   public void output(double info)
   {  output(info + ""); }

   public void output(boolean info)
   {  output(info + ""); }

   static String input(String prompt)
   { return javax.swing.JOptionPane.showInputDialog(null,prompt); }

   static String inputString(String prompt)
   { return input(prompt);   }

   static String input()
   { return input("");       }

   static int inputInt()
   {  return inputInt(""); }

   static double inputDouble()
   { return inputDouble(""); }

   static char inputChar(String prompt)
   {  char result=(char)0;
      try{result=input(prompt).charAt(0);}
      catch (Exception e){result = (char)0;}
      return result;
   }

   static byte inputByte(String prompt)
   {  byte result=0;
      try{result=Byte.valueOf(input(prompt).trim()).byteValue();}
      catch (Exception e){result = 0;}
      return result;
   }

   static int inputInt(String prompt)
   {  int result=0;
      try{result=Integer.valueOf(
      input(prompt).trim()).intValue();}
      catch (Exception e){result = 0;}
      return result;
   }

   static long inputLong(String prompt)
   {  long result=0;
      try{result=Long.valueOf(input(prompt).trim()).longValue();}
      catch (Exception e){result = 0;}
      return result;
   }

   static double inputDouble(String prompt)
   {  double result=0;
      try{result=Double.valueOf(
      input(prompt).trim()).doubleValue();}
      catch (Exception e){result = 0;}
      return result;
   }

   static boolean inputBoolean(String prompt)
   {  boolean result=false;
      try{result=Boolean.valueOf(
      input(prompt).trim()).booleanValue();}
      catch (Exception e){result = false;}
      return result;
   }