import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JOptionPane;
import javax.swing.JButton;

public class En implements ActionListener {
	Calk parent;
	char selectedAction = ' ';
	double currentResult = 0;
	En(Calk parent){
		this.parent = parent;
	}
	
	public void actionPerformed(ActionEvent e) {
		
		JButton clickedButton = (JButton)e.getSource();
		String dispFieldText = parent.displayField.getText();
		
		
		
		
		double displayValue = 0;
		
		
		
		
		
		if(!"".equals(dispFieldText)) {
			displayValue = Double.parseDouble(dispFieldText);
		}
		Object src = e.getSource();
		if (src == parent.buttonPlus) {
			selectedAction ='+';
			currentResult = displayValue;
			parent.displayField.setText("");
		}else if (src == parent.buttonMinus) {
				selectedAction ='-';
				currentResult = displayValue;
				parent.displayField.setText("");
			}else 	if (src == parent.buttonDivide) {
				selectedAction ='/';
				currentResult = displayValue;
				parent.displayField.setText("");
			}else if (src == parent.buttonMultiply) {
				selectedAction ='*';
				currentResult = displayValue;
				parent.displayField.setText("");
			}else if (src == parent.buttonEqual) {
				if (selectedAction =='+') {
					currentResult += displayValue;
					parent.displayField.setText("" + currentResult);
				}else if (selectedAction =='-') {
						currentResult -= displayValue;
						parent.displayField.setText("" + currentResult);
				}else if (selectedAction =='/') {
					currentResult /= displayValue;
					parent.displayField.setText("" + currentResult);
				}else if (selectedAction =='*') {
					currentResult *= displayValue;
					parent.displayField.setText("" + currentResult);
				}else {
					String cbl =clickedButton.getText();
					parent.displayField.setText(dispFieldText + cbl);
				}
			
					
		
		String cbl =clickedButton.getText();
		JOptionPane.showConfirmDialog(null,"Вы нажали" + cbl , "Пока пробуем" , JOptionPane.PLAIN_MESSAGE);
	
			
		}
		
	}
}