Language Java Nosugar Custom Tabs Code Testtabs.java

// 
//	TestTabs class
//	part of the set of documents known as Java no sugar.
//	Copyright (c) 1996,1997 Sunil Gupta, sunil@magnetic.demon.co.uk
//	placed into the public domain by the author
//
import java.applet.*;
import java.awt.*;
import TabBar;
import TabEntry;

public class TestTabs extends Applet
{
	TabBar tab;
	Checkbox chk_size, chk_square, chk_upBevel, chk_downBevel;
	CheckboxGroup group;
	Panel cards_panel = null;
	
	private static final String TAB1 = "tab1";
	private static final String TAB2 = "tab2";
	private static final String TAB3 = "Another Tab";
	private static final String TAB4 = "Last Tab";
	private static final char DELIM = ',';
	
	
	public void init()
	{
		Panel chk_panel, centre_panel;
		Label label;
		
		
		//===----------add the tabs to the north bit of the center panel-------
		tab = new TabBar(TAB1 + DELIM + TAB2 + DELIM + TAB3 + DELIM + TAB4,	DELIM);
		
		//-----------create notepad and add to center of the center panel-------
		cards_panel = new Panel();
		cards_panel.setLayout( new CardLayout());
		
		label = new Label( TAB1);
		cards_panel.add( TAB1, label);
		label = new Label( TAB2);
		cards_panel.add( TAB2, label);
		label = new Label( TAB3);
		cards_panel.add( TAB3, label);
		label = new Label( TAB4);
		cards_panel.add( TAB4, label);
		
		centre_panel = new Panel();
		centre_panel.setLayout(new BorderLayout());
		centre_panel.add("North", tab);
		centre_panel.add ( "Center", cards_panel);

		//====-----create checkboxes -------------------
		chk_size = new Checkbox("Fixed width");
		chk_size.setState(true);
		
		chk_square = new Checkbox("Square");
		chk_upBevel = new Checkbox("Bevel1");
		chk_downBevel = new Checkbox("Bevel2");
		
		group = new CheckboxGroup();
		chk_square.setCheckboxGroup( group);
		chk_upBevel.setCheckboxGroup( group);
		chk_downBevel.setCheckboxGroup( group);
		
		//---------add to the panel---------------
		chk_panel = new Panel();
		chk_panel.setLayout(new GridLayout(0,1));
		chk_panel.add(chk_size);
		chk_panel.add(chk_square);
		chk_panel.add(chk_upBevel);
		chk_panel.add(chk_downBevel);

		//====----------add panels to this applet-----
		setLayout(new BorderLayout());
		this.add("Center", centre_panel);
		this.add("East", chk_panel);
	}
	
	public boolean action( Event e, Object arg)
	{
		Boolean state;
		TabBar entry;
		CardLayout layout;
		
		
		if (e.target == chk_size)
		{
			Boolean obj = (Boolean) arg;
			tab.set_fixed_size(obj.booleanValue());
			return true;
		}
		else if (e.target == chk_square)
		{
			tab.set_style( TabBar.SQUARE);
			return true;
		}
		else if (e.target == chk_upBevel)
		{
			tab.set_style( TabBar.TOP_BEVELLED);
			return true;
		}
		else if (e.target == chk_downBevel)
		{
			tab.set_style( TabBar.BOTTOM_BEVELLED);
			return true;
		}
		else if (e.target == tab)
		{
			entry = (TabBar)arg;
			layout = (CardLayout) cards_panel.getLayout();
			layout.show( cards_panel, entry.getActiveTabName() ); 
		}

		
		return false;
	}	
}

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