import java.awt.*;
import java.applet.*;
import java.lang.*;

public class Widgets extends Applet implements Runnable
{
	Thread t; 			// thread
	private Image bufferImage;	// buffer image
	private Graphics buffer;	// buffer
	private int width;		// width
	private int height;		// height
	private String message;	// message

	private Button myButton = new Button("Click Here");	
	// creates an AWT button (can click the button)

	private Checkbox myCheckbox = new Checkbox("Yes");
	// creates a checkbox (can check/uncheck a square)

	private Choice myChoice = new Choice();
	// creates a choicebox  (drop down list to choose from)

	private List myList = new List();
	// creates a listbox (list of items)

	private TextField myTextbox = new TextField("Blah");
	// creates a textbox (can type things in it)

	private Color bgcolor;
	private String textstring;


	public void init()
	{
		t = new Thread(this);	// create new thread
		t.start();			// start thread

		width=size().width;		// set width to width of applet
		height=size().height;	// set height to height of applet

		bufferImage = createImage(width, height);	// create buffer image
		buffer=bufferImage.getGraphics();		// set buffer to buffer image

		myChoice.addItem("Red");
		myChoice.addItem("Blue");
		myChoice.addItem("Yellow");
		myChoice.addItem("Green");
		// place some items in our choice box for the user to choose from

		bgcolor = Color.black;

		add(myButton);	// places the widget on the applet
		add(myCheckbox);
		add(myChoice);
		add(myList);
		add(myTextbox);

		setBackground(Color.black);
		myButton.reshape(100, 200, 50, 50);
		// x, y, width, height



	}	
	public void run()
	{
		while(true)	
		{
			repaint();
		
			try{
				t.sleep(5);
			}catch(InterruptedException e) { ; }

		}
	}
	public void paint(Graphics summer)
	{
		buffer.setColor(bgcolor);
		buffer.fillRect(0,0,width,height);

		buffer.setColor(Color.red);
		buffer.drawString(message, 100, 100);

		summer.drawImage(bufferImage, 0, 0, this);

		myButton.reshape(100, 200, 50, 50);
		// x, y, width, height

	}
	public void update(Graphics fujitsu) { paint(fujitsu); }

	public boolean action(Event e, Object obj)
	{
		if (e.target == myButton)
		{
			message = "Button pressed" + obj;
		}	
		else if (e.target == myCheckbox)
		{
			message = "Checkbox is " + obj;
		}
		else if (e.target == myChoice)
		{
			message = "Choice " + obj + " is selected";
			if (obj == "Red")
				bgcolor = Color.red;
			else if (obj =="Blue")
				bgcolor = Color.blue;
			else if (obj=="Yellow")
				bgcolor = Color.yellow;
			else if (obj == "Green")		
				bgcolor = Color.green;
				
		}
		else if (e.target == myList)
		{	
			message = "List " + obj + " is selected";
		}
		else if (e.target == myTextbox)
		{
			message = "Text is " + obj;
			textstring = toString(obj);
			myList.addItem(textstring);
		}
		else
			return false;



		return true;	
	}

}