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

public class ShopFrame extends Frame implements ActionListener, WindowListener, ItemListener
{
	void formPanel()
	{
		add(ShopPanel.clearCart);
		ShopPanel.clearCart.addActionListener(this);
		add(ShopPanel.help);
		ShopPanel.help.addActionListener(this);
		add(ShopPanel.up);
		ShopPanel.up.addActionListener(this);
		add(ShopPanel.down);
		ShopPanel.down.addActionListener(this);
		add(ShopPanel.addItem);
		ShopPanel.addItem.addActionListener(this);
		add(ShopPanel.addTenItems);
		ShopPanel.addTenItems.addActionListener(this);
		add(ShopPanel.removeItem);
		ShopPanel.removeItem.addActionListener(this);
		add(ShopPanel.removeTenItems);
		ShopPanel.removeTenItems.addActionListener(this);
		add(ShopPanel.finalizeOrder);
		ShopPanel.finalizeOrder.addActionListener(this);
		add(ShopPanel.reset);
		ShopPanel.reset.addActionListener(this);
		add(ShopPanel.listOfProducts);
		ShopPanel.listOfProducts.addItemListener(this);
		add(ShopPanel.itemChosen);
		add(ShopPanel.subLabel);
		add(ShopPanel.subTotal);
		setBackground(ShopPanel.backColor);	//also set twice in ShopPanel
		addWindowListener(this);
	}

	public void windowClosing(WindowEvent e)
	{
		ShopPanel.closeWindow();
	}

	public void windowDeiconified(WindowEvent e){}
	public void windowDeactivated(WindowEvent e){}
	public void windowActivated(WindowEvent e){}
	public void windowClosed(WindowEvent e) {}
	public void windowIconified(WindowEvent e) {}
	public void windowOpened(WindowEvent e) {}

	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource() instanceof Button)
		{
			Object button = e.getSource();
			if(button == ShopPanel.clearCart)
			{
				ShopPanel.clearCart();
				setVisible(false);
			}
			else if(button == ShopPanel.up)
				ShopPanel.up();
			else if(button == ShopPanel.down)
				ShopPanel.down();
			else if(button == ShopPanel.addItem)
				ShopPanel.addAnItem(new Integer(1));
			else if(button == ShopPanel.addTenItems)
				ShopPanel.addAnItem(new Integer (10));
			else if(button == ShopPanel.removeItem)
				ShopPanel.removeAnItem(new Integer(1));
			else if(button == ShopPanel.removeTenItems)
				ShopPanel.removeAnItem(new Integer(10));
			else if(button == ShopPanel.finalizeOrder)
				ShopPanel.orderJump();
			else if(button == ShopPanel.help)
				ShopPanel.helpJump();
			else if(button == ShopPanel.reset)
				ShopPanel.resetOrder();
			else
				return;	//necessary because frame formation can trigger random button events
		}
	}

	public void itemStateChanged(ItemEvent e)
	{
		if(e.getSource() instanceof List)
		{
			ShopPanel.updateHeading();
		}
	}
}