act4

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class CalculatorGuiAct4 extends Frame
{
    public static  Operand op;
    public static Adder add;
    public static Subtracter sub;
    public static Multiplier mul;
    public static Divider div;
    public static ResultPresenter rp;
    public Button button0, button1, button2, button3, button4;
    public Button button5, button6, button7, button8, button9;
    public Button buttonPlus, buttonMinus, buttonResultPresenter, buttonTimes, buttonDivide;
    public Button buttonEnter, buttonBackSpace, buttonClear,buttonClearAll;
    public static Frame window;
    public static TextField display;
    private static int width, height, x, y, i;


    public CalculatorGuiAct4(Operand op2, Adder add2, Subtracter sub2, Multiplier mult, Divider div2, ResultPresenter rp2)
        {
            int width = 35;
            int height = 28;
            int y = 265;
            int i = 0;

            CalculatorGuiAct4.op = op2;
            CalculatorGuiAct4.add = add2;
            CalculatorGuiAct4.sub = sub2;
            CalculatorGuiAct4.rp = rp2;

            Map <String, Button> buttons = new LinkedHashMap<String, Button>();

            buttons.put("7", button7);
            buttons.put("8", button8);
            buttons.put("9", button9);
            buttons.put("*", buttonTimes);
            buttons.put("4", button4);
            buttons.put("5", button5);
            buttons.put("6", button6);
            buttons.put("+", buttonPlus);
            buttons.put("1", button1);
            buttons.put("2", button2);
            buttons.put("3", button3);
            buttons.put("/", buttonDivide);
            buttons.put("0", button0);
            buttons.put("C", buttonClearAll);
            buttons.put("CE", buttonClear);
            buttons.put("-", buttonMinus);
            buttons.put("ENTER", buttonBackSpace);
            buttons.put("BackSpace", buttonBackSpace);
            buttons.put("=", buttonResultPresenter);

            window = new Frame("CALC Activity 4");

            window.setLayout(null);
            window.setFont(new Font("TimesRoman", Font.PLAIN, 14));
            window.setBackground(Color.red);

            for(Map.Entry<String, Button> entry: buttons.entrySet())
            {
                String key = entry.getKey();
                Button btn = entry.getValue();

                x = i == 3 ? 195 : i == 2 ? 144 : i == 1 ? 104 : 64;
                y = i == 0 ? y-35 : y;

                btn = new Button(key);
                btn.setBounds(x, y, width, height);
                btn.setFont(new Font("TimesRoman", Font.PLAIN, 14));
                btn.setForeground(Color.blue);
                btn.addActionListener(new ButtonHandler(key));
                CalculatorGuiAct4.window.add(btn);
                System.out.println(key + String.valueOf(i));
                i = i == 3 ? 0 : i + 1;
            }

            //D  I  S  P  L  A  Y     S  E  T  T  I  N  G  S
            display = new TextField("0");
            display.setEditable(false);
            display.setBounds(13, 55, 257, 30);

            //W  I  N  D  O  W     S  E  T  T  I  N  G  S
            window.add(display);
            window.setSize(283,320);
            window.setLocation(40,80);
            //window.show();
            window.setVisible(true);
            window.setResizable(false);
            window.addWindowListener(new CloseWindowAndExit());
        }

    }

    class CloseWindowAndExit extends WindowAdapter
        {
            public void windowClosing(WindowEvent closeWindowAndExit)
        {
            System.exit(0);
        }
}

class ButtonHandler implements ActionListener
  {
     private String key;

    public ButtonHandler(String Key)
    {
        this.key = Key;
    }

     public void actionPerformed(ActionEvent pushingButton)
        {
            switch (this.key){
                case "ENTER":
                    CalculatorGuiAct4.op.complete();
                    break;
                case "BackSpace":
                    CalculatorGuiAct4.op.deleteLastDigit();
                    break;
                case "ClearAll":
                    CalculatorGuiAct4.op.reset();
                    Calc.st.removeAllElements();
                    break;
                case "Clear":
                    CalculatorGuiAct4.op.reset();
                    break;
                case "+":
                    CalculatorGuiAct4.add.operate();
                    break;
                case "-":
                    CalculatorGuiAct4.sub.operate();
                    break;
                case "*":
                    CalculatorGuiAct4.mul.operate();
                    break;
                case "/":
                    CalculatorGuiAct4.div.operate();
                    break;
                default:
                    CalculatorGuiAct4.op.addDigit(this.key.charAt(0));
                    break;
            }
        }
   }