/* 
 * Joe Schmoe 
 * buttonTest.java
 * Same as IOpractice.java, but adds a button to submit input.
 */
 
import java.applet.Applet;   
import java.awt.*;		// abstract window toolkit (awt)
import java.awt.event.*;	// for event handlers
import javax.swing.*;    	// swing toolkit

public class buttonTest extends JApplet {

	JButton myButton = new JButton ("Submit");      // create a button
	JTextField lastField = new JTextField ();	// space for last name
	JTextField firstField = new JTextField ();	// space for first name
	JTextField quantField = new JTextField ();	// space for quantity
	String lastName, firstName;			// store names
	String quantity;				// quantity input
	double total;					// computed total
	double quantVal;				// converted quantity

	// display test average
	public void paint (Graphics grafObj) {
	    Color myColor = new Color (255, 200, 200);
	    setBackground (myColor);			
	    grafObj.clearRect(0, 0, 400, 400); 		// clear previous text
	    Font myFont = new Font ("Helvetica", Font.PLAIN, 18);		
	    grafObj.setFont (myFont);
	    if (quantVal > 0) {
	        grafObj.drawString ("Your cost for "+quantity+" items is: "+total, 10, 140);
		grafObj.drawString ("Shipping to: "+ lastName +", "+firstName, 10, 160);
	    }
	}

	// set up the test GUI
	public void init () {
	    Container myContainer;
	    	
	    // create a panel and objects to put into panel
	    Panel thePanel = new Panel();
	    JLabel label1 = new JLabel ("Last name:  ");
	    JLabel label2 = new JLabel ("First name: ");
	    JLabel label3 = new JLabel ("Quantity:   ");
		
	    // set up how panel will look
	    thePanel.setLayout (new GridLayout (4, 2));
	    thePanel.setBackground (Color.magenta);

	    // put stuff onto panel
	    thePanel.add (label1);
	    thePanel.add (lastField);
	    thePanel.add (label2);
	    thePanel.add (firstField);
	    thePanel.add (label3);
	    thePanel.add (quantField);

	    // add the button
	    thePanel.add (myButton);
	    
	    // set up the button
	    myButton.addActionListener (new doSubmit());

	    // add the panel itself to the container
	    myContainer = getContentPane();
	    myContainer.add (thePanel, BorderLayout.NORTH);
	    quantVal = 0;
	}

        // define action when button is pressed
	public class doSubmit implements ActionListener {
	    public void actionPerformed (ActionEvent event) {

		    // get data from form
		    lastName = lastField.getText();
		    firstName = firstField.getText();
		    quantity = quantField.getText();
    
	            // convert string to double quantity
		    quantVal = Double.valueOf (quantity).doubleValue();
			
		    // calculate average 
		    total = 10.99 * quantVal;
                    repaint();
            }
	}
	
}