examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CTabFolderTab.java

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.examples.controlexample;


import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

class CTabFolderTab extends Tab {
	int lastSelectedTab = 0;
	
	/* Example widgets and groups that contain them */
	CTabFolder tabFolder1;
	Group tabFolderGroup;
	
	/* Style widgets added to the "Style" group */
	Button topButton, bottomButton, borderButton, flatButton;

	static String [] CTabItems1 = {ControlExample.getResourceString("CTabItem1_0"),
								  ControlExample.getResourceString("CTabItem1_1"),
								  ControlExample.getResourceString("CTabItem1_2")};

	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	CTabFolderTab(ControlExample instance) {
		super(instance);
	}
	
	/**
	 * Creates the "Example" group.
	 */
	void createExampleGroup () {
		super.createExampleGroup ();
		
		/* Create a group for the CTabFolder */
		tabFolderGroup = new Group (exampleGroup, SWT.NONE);
		tabFolderGroup.setLayout (new GridLayout ());
		tabFolderGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
		tabFolderGroup.setText ("CTabFolder");
	}
	
	/**
	 * Creates the "Example" widgets.
	 */
	void createExampleWidgets () {
		
		/* Compute the widget style */
		int style = SWT.NONE;
		if (topButton.getSelection ()) style |= SWT.TOP;
		if (bottomButton.getSelection ()) style |= SWT.BOTTOM;
		if (borderButton.getSelection ()) style |= SWT.BORDER;
		if (flatButton.getSelection ()) style |= SWT.FLAT;

		/* Create the example widgets */
		tabFolder1 = new CTabFolder (tabFolderGroup, style);
		for (int i = 0; i < CTabItems1.length; i++) {
			CTabItem item = new CTabItem(tabFolder1, SWT.NONE);
			item.setText(CTabItems1[i]);
			Label label = new Label(tabFolder1,SWT.NONE);
			label.setText(ControlExample.getResourceString("CTabItem_content" + ": " + i));
			item.setControl(label);
		}
		tabFolder1.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				lastSelectedTab = tabFolder1.getSelectionIndex();
			}
		});
		tabFolder1.setSelection(lastSelectedTab);
	}
	
	/**
	 * Creates the "Style" group.
	 */
	void createStyleGroup() {
		super.createStyleGroup ();
		
		/* Create the extra widgets */
		topButton = new Button (styleGroup, SWT.RADIO);
		topButton.setText ("SWT.TOP");
		topButton.setSelection(true);
		bottomButton = new Button (styleGroup, SWT.RADIO);
		bottomButton.setText ("SWT.BOTTOM");
		borderButton = new Button (styleGroup, SWT.CHECK);
		borderButton.setText ("SWT.BORDER");
		flatButton = new Button (styleGroup, SWT.CHECK);
		flatButton.setText ("SWT.FLAT");
		flatButton.setEnabled(false);
	
		/* Add the listeners */
		SelectionListener selectionListener = new SelectionAdapter () {
			public void widgetSelected(SelectionEvent event) {
				if ((event.widget.getStyle() & SWT.RADIO) != 0) {
					if (!((Button) event.widget).getSelection ()) return;
				}
				recreateExampleWidgets ();
			};
		};
		topButton.addSelectionListener (selectionListener);
		bottomButton.addSelectionListener (selectionListener);
		borderButton.addSelectionListener (selectionListener);
		flatButton.addSelectionListener (selectionListener);
		borderButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				flatButton.setEnabled(borderButton.getSelection());
			}
		});
	}
	
	/**
	 * Gets the "Example" widget children.
	 */
	Control [] getExampleWidgets () {
		return new Control [] {tabFolder1};
	}
	
	/**
	 * Gets the text for the tab folder item.
	 */
	String getTabText () {
		return "CTabFolder";
	}
}