package taschenrechner;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Applet1 extends Applet {
  boolean isStandalone = false;
  Panel panel1 = new Panel();
  Button button1 = new Button();
  Button button2 = new Button();
  Button button3 = new Button();
  Button button4 = new Button();
  Button button5 = new Button();
  Button button6 = new Button();
  Button button7 = new Button();
  Button button8 = new Button();
  Button button9 = new Button();
  Button button10 = new Button();
  Button button11 = new Button();
  GridLayout gridLayout1 = new GridLayout(4,4);
  Button button12 = new Button();
  Button button13 = new Button();
  Button button14 = new Button();
  Button button15 = new Button();
  Button button16 = new Button();
  TextField textField1 = new TextField();
  Label label1 = new Label();
  Label label2 = new Label();
  Button button17 = new Button();
  /**Parameterwert holen*/
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**Das Applet konstruieren*/
  public Applet1() {
  }
  /**Das Applet initialisieren*/
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Initialisierung der Komponenten*/
  private void jbInit() throws Exception {
    this.setLayout(null);
    panel1.setBounds(new Rectangle(38, 118, 169, 160));
    panel1.setLayout(gridLayout1);
    button1.setLabel("7");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    button2.setLabel("8");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_actionPerformed(e);
      }
    });
    button3.setLabel("/");
    button3.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button3_actionPerformed(e);
      }
    });
    button4.setLabel("=");
    button4.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button4_actionPerformed(e);
      }
    });
    button5.setLabel(".");
    button5.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button5_actionPerformed(e);
      }
    });
    button6.setLabel("0");
    button7.setLabel("3");
    button7.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button7_actionPerformed(e);
      }
    });
    button8.setLabel("2");
    button8.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button8_actionPerformed(e);
      }
    });
    button9.setLabel("1");
    button9.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button9_actionPerformed(e);
      }
    });
    button10.setLabel("+");
    button10.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button10_actionPerformed(e);
      }
    });
    button11.setLabel("9");
    button11.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button11_actionPerformed(e);
      }
    });
    button12.setLabel("4");
    button12.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button12_actionPerformed(e);
      }
    });
    button13.setLabel("5");
    button13.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button13_actionPerformed(e);
      }
    });
    button14.setLabel("*");
    button14.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button14_actionPerformed(e);
      }
    });
    button15.setLabel("6");
    button15.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button15_actionPerformed(e);
      }
    });
    button16.setLabel("-");
    button16.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button16_actionPerformed(e);
      }
    });
    //textField1.setText("textField1");
    textField1.setBounds(new Rectangle(40, 74, 166, 27));
    label1.setText("label1");
    label1.setBounds(new Rectangle(50, 28, 141, 17));
    label2.setText("label2");
    label2.setBounds(new Rectangle(209, 26, 34, 17));
    button17.setLabel("Clear");
    button17.setBounds(new Rectangle(212, 120, 64, 29));
    button17.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button17_actionPerformed(e);
      }
    });
    this.add(panel1, null);
    panel1.add(button1, null);
    panel1.add(button2, null);
    panel1.add(button11, null);
    panel1.add(button10, null);
    panel1.add(button12, null);
    panel1.add(button13, null);
    panel1.add(button15, null);
    panel1.add(button14, null);
    panel1.add(button9, null);
    panel1.add(button8, null);
    panel1.add(button7, null);
    panel1.add(button16, null);
    panel1.add(button6, null);
    panel1.add(button5, null);
    panel1.add(button4, null);
    panel1.add(button3, null);
    this.add(textField1, null);
    this.add(button17, null);
    this.add(label2, null);
    this.add(label1, null);
  }
  /**Applet-Information holen*/
  public String getAppletInfo() {
    return "Applet-Information";
  }
  /**Parameter-Infos holen*/
  public String[][] getParameterInfo() {
    return null;
  }
  void zahlrein(int i) {
    textField1.setText(textField1.getText()+i);
  }

  void operation(String c) {
    label1.setText(textField1.getText());
    textField1.setText("");
    label2.setText(c);
  }

  void button15_actionPerformed(ActionEvent e) {
    zahlrein(6);
  }

  void button1_actionPerformed(ActionEvent e) {
    zahlrein(7);
  }

  void button2_actionPerformed(ActionEvent e) {
    zahlrein(8);
  }

  void button11_actionPerformed(ActionEvent e) {
    zahlrein(9);
  }

  void button12_actionPerformed(ActionEvent e) {
    zahlrein(4);
  }

  void button13_actionPerformed(ActionEvent e) {
    zahlrein(5);
  }

  void button9_actionPerformed(ActionEvent e) {
    zahlrein(1);
  }

  void button8_actionPerformed(ActionEvent e) {
    zahlrein(2);
  }

  void button7_actionPerformed(ActionEvent e) {
    zahlrein(3);
  }

  void button5_actionPerformed(ActionEvent e) {
    textField1.setText(textField1.getText()+'.');
  }

  void button10_actionPerformed(ActionEvent e) {
    operation("+");
  }

  void button17_actionPerformed(ActionEvent e) {
    textField1.setText("");
    label1.setText("");
    label2.setText("");
  }

  void button14_actionPerformed(ActionEvent e) {
    operation("*");
  }

  void button16_actionPerformed(ActionEvent e) {
    operation("-");
  }

  void button3_actionPerformed(ActionEvent e) {
    operation("/");
  }

  void button4_actionPerformed(ActionEvent e) {
    float a,b,c;
    c=0;
    //textField1.setText("HUHUsteng");
    a= Float.valueOf(label1.getText()).floatValue();
    b= Float.valueOf (textField1.getText()).floatValue();
    if (label2.getText() =="+") c=a+b;
    else if (label2.getText() =="*") c=a*b;
    else if (label2.getText() =="-") c=a-b;
    else if (label2.getText() =="/") c=a/b;
    textField1.setText(Float.toString(c));
    label1.setText("");
    label2.setText("");
  }
}