Language Java Nosugar UI Code Widgetdemo.java

// 
//	WidgetDemo class
//	part of the set of documents known as Java no sugar.
//	Copyright (c) 1996 Sunil Gupta, sunil@magnetic.demon.co.uk
//	placed into the public domain by the author
//
import java.awt.*;
import java.applet.*;

public class WidgetDemo extends Applet
{
	//*******************************************************************
	// globals
	//*******************************************************************
	static final String BUTTON = "BUTTON";
	static final String CHECKBOX = "CHECKBOX";
	static final String CHOICE = "CHOICE";
	static final String LABEL = "LABEL";
	static final String LIST = "LIST";
	static final String SCROLLBAR = "SCROLLBAR";
	static final String TEXTAREA = "TEXTAREA";
	static final String TEXTFIELD = "TEXTFIELD";
	
	//*******************************************************************
	// applet methods
	//*******************************************************************
	public void init()
	{
		String style;
		
		style = getParameter("STYLE");
		
		if	(style == null)	
			System.exit(1);
		else
		{
			this.setLayout( new FlowLayout());
			
			if (style.equals(BUTTON))
			{
				this.add( new Button("A button"));
			}
			else if (style.equals(CHECKBOX))
			{
				CheckboxGroup group;
				Checkbox[] boxes;
				
				group = new CheckboxGroup();
				boxes = new Checkbox[3];
				boxes[0] = new Checkbox("First item", group, false);
				boxes[1] = new Checkbox("Second item", group, true);
				boxes[2] = new Checkbox("Third item", group, false);
				
				this.add(boxes[0]);
				this.add(boxes[1]);
				this.add(boxes[2]);
				this.add(new Checkbox("outside group", null, false));
			}
			else if (style.equals(CHOICE))
			{
				Choice thing;
				
				thing = new Choice();
				thing.addItem("First Choice");
				thing.addItem("Second Choice");
				thing.addItem("Third Choice");
				this.add(thing);
			}
			else if (style.equals(LIST))
			{
				List list;
				
				list = new List(4, true);
				list.addItem("Machine Code");
				list.addItem("Assembler");
				list.addItem("Basic");
				list.addItem("Visual Basic");
				list.addItem("C");
				list.addItem("C++");
				list.addItem("Java");
				list.addItem("* Delphi *");
				this.add(list);
			}
			else if (style.equals(LABEL))
			{
				this.add( new Label("A label"));
			}
			else if (style.equals(SCROLLBAR))
			{
				this.add ( new Scrollbar(Scrollbar.VERTICAL));
				this.add ( new Scrollbar(Scrollbar.HORIZONTAL));
			}
			else if (style.equals(TEXTAREA))
			{
				this.add( new TextArea("This is a text area",5,30));
			}
			else if (style.equals(TEXTFIELD))
			{
				this.add( new TextField("This is a text field",30));
			}
		}
	}

}

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