examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/ColorTab.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2016 Red Hat, Inc. and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Ian Pun <ipun@redhat.com> - addition of Color tab
  *******************************************************************************/
 package org.eclipse.swt.examples.controlexample;


 import static org.eclipse.swt.events.SelectionListener.widgetSelectedAdapter;

 import java.util.HashMap;
 import java.util.Map.Entry;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Cursor;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.TableItem;
 import org.eclipse.swt.widgets.Widget;

 class ColorTab extends Tab {
 	Table colors, cursors;
 	Group colorsGroup, cursorsGroup;
 	HashMap <Integer, String> hmap = new HashMap <> ();
 	HashMap <Integer, String> cmap = new HashMap <> ();
 	static final int namedColorEnd = 8;
 	static String [] columnTitles	= {ControlExample.getResourceString("ColorTitle_0"),
 				ControlExample.getResourceString("ColorTitle_1"),
 				ControlExample.getResourceString("ColorTitle_2"),
 				ControlExample.getResourceString("ColorTitle_3")};

 	/* Size widgets added to the "Size" group */
 	Button packColumnsButton;

 	/**
 	 * Creates the color tab within a given instance of ControlExample.
 	 */
 	ColorTab(ControlExample instance) {
 		super(instance);
 		addTableElements();
 	}

 	void addTableElements () {
 		hmap.put(SWT.COLOR_WHITE, "COLOR_WHITE");
 		hmap.put(SWT.COLOR_BLACK, "COLOR_BLACK");
 		hmap.put(SWT.COLOR_RED, "COLOR_RED");
 		hmap.put(SWT.COLOR_DARK_RED, "COLOR_DARK_RED");
 		hmap.put(SWT.COLOR_GREEN, "COLOR_GREEN");
 		hmap.put(SWT.COLOR_DARK_GREEN, "COLOR_DARK_GREEN");
 		hmap.put(SWT.COLOR_YELLOW, "COLOR_YELLOW");
 		hmap.put(SWT.COLOR_DARK_YELLOW, "COLOR_DARK_YELLOW");
 		hmap.put(SWT.COLOR_WIDGET_DARK_SHADOW, "COLOR_WIDGET_DARK_SHADOW");
 		hmap.put(SWT.COLOR_WIDGET_NORMAL_SHADOW, "COLOR_WIDGET_NORMAL_SHADOW");
 		hmap.put(SWT.COLOR_WIDGET_LIGHT_SHADOW, "COLOR_WIDGET_LIGHT_SHADOW");
 		hmap.put(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW, "COLOR_WIDGET_HIGHLIGHT_SHADOW");
 		hmap.put(SWT.COLOR_WIDGET_FOREGROUND, "COLOR_WIDGET_FOREGROUND");
 		hmap.put(SWT.COLOR_WIDGET_BACKGROUND, "COLOR_WIDGET_BACKGROUND");
 		hmap.put(SWT.COLOR_WIDGET_BORDER, "COLOR_WIDGET_BORDER");
 		hmap.put(SWT.COLOR_LIST_FOREGROUND, "COLOR_LIST_FOREGROUND");
 		hmap.put(SWT.COLOR_LIST_BACKGROUND, "COLOR_LIST_BACKGROUND");
 		hmap.put(SWT.COLOR_LIST_SELECTION, "COLOR_LIST_SELECTION");
 		hmap.put(SWT.COLOR_LIST_SELECTION_TEXT, "COLOR_LIST_SELECTION_TEXT");
 		hmap.put(SWT.COLOR_INFO_FOREGROUND, "COLOR_INFO_FOREGROUND");
 		hmap.put(SWT.COLOR_INFO_BACKGROUND, "COLOR_INFO_BACKGROUND");
 		hmap.put(SWT.COLOR_TITLE_FOREGROUND, "COLOR_TITLE_FOREGROUND");
 		hmap.put(SWT.COLOR_TITLE_BACKGROUND, "COLOR_TITLE_BACKGROUND");
 		hmap.put(SWT.COLOR_TITLE_BACKGROUND_GRADIENT, "COLOR_TITLE_BACKGROUND_GRADIENT");
 		hmap.put(SWT.COLOR_TITLE_INACTIVE_FOREGROUND, "COLOR_TITLE_INACTIVE_FOREGROUND");
 		hmap.put(SWT.COLOR_TITLE_INACTIVE_BACKGROUND, "COLOR_TITLE_INACTIVE_BACKGROUND");
 		hmap.put(SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT, "COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT");
 		hmap.put(SWT.COLOR_LINK_FOREGROUND, "COLOR_LINK_FOREGROUND");
 		hmap.put(SWT.COLOR_WIDGET_DISABLED_FOREGROUND, "COLOR_WIDGET_DISABLED_FOREGROUND");
 		hmap.put(SWT.COLOR_TEXT_DISABLED_BACKGROUND, "COLOR_TEXT_DISABLED_BACKGROUND");

 		cmap.put(SWT.CURSOR_APPSTARTING, "CURSOR_APPSTARTING");
 		cmap.put(SWT.CURSOR_ARROW, "CURSOR_ARROW");
 		cmap.put(SWT.CURSOR_WAIT, "CURSOR_WAIT");
 		cmap.put(SWT.CURSOR_CROSS, "CURSOR_CROSS");
 		cmap.put(SWT.CURSOR_HAND, "CURSOR_HAND");
 		cmap.put(SWT.CURSOR_HELP, "CURSOR_HELP");
 		cmap.put(SWT.CURSOR_SIZEALL, "CURSOR_SIZEALL");
 		cmap.put(SWT.CURSOR_SIZENESW, "CURSOR_SIZENESW");
 		cmap.put(SWT.CURSOR_SIZENS, "CURSOR_SIZENS");
 		cmap.put(SWT.CURSOR_SIZENWSE, "CURSOR_SIZENWSE");
 		cmap.put(SWT.CURSOR_SIZEWE, "CURSOR_SIZEWE");
 		cmap.put(SWT.CURSOR_SIZEN, "CURSOR_SIZEN");
 		cmap.put(SWT.CURSOR_SIZES, "CURSOR_SIZES");
 		cmap.put(SWT.CURSOR_SIZEE, "CURSOR_SIZEE");
 		cmap.put(SWT.CURSOR_SIZEW, "CURSOR_SIZEW");
 		cmap.put(SWT.CURSOR_SIZENE, "CURSOR_SIZENE");
 		cmap.put(SWT.CURSOR_SIZESE, "CURSOR_SIZESE");
 		cmap.put(SWT.CURSOR_SIZESW, "CURSOR_SIZESW");
 		cmap.put(SWT.CURSOR_SIZENW, "CURSOR_SIZENW");
 		cmap.put(SWT.CURSOR_UPARROW, "CURSOR_UPARROW");
 		cmap.put(SWT.CURSOR_IBEAM, "CURSOR_IBEAM");
 		cmap.put(SWT.CURSOR_NO, "CURSOR_NO");
 	}

 	/**
 	 * Creates the "Example" group.
 	 */
 	@Override
 	void createExampleGroup () {
 		super.createExampleGroup ();
 		exampleGroup.setLayout(new GridLayout(2, false));

 		colorsGroup = new Group (exampleGroup, SWT.NONE);
 		colorsGroup.setLayout (new GridLayout ());
 		colorsGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, true));
 		colorsGroup.setText ("Colors");

 		cursorsGroup = new Group (exampleGroup, SWT.NONE);
 		cursorsGroup.setLayout (new GridLayout ());
 		cursorsGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, true));
 		cursorsGroup.setText ("Cursors");
 	}

 	/**
 	 * Creates the "Example" widgets.
 	 */
 	@Override
 	void createExampleWidgets () {

 		/* Create the color table widget */
 		/* Compute the widget style */
 		int style = getDefaultStyle();
 		colors = new Table (colorsGroup, style | SWT.V_SCROLL);
 		colors.setLayoutData(new GridData (SWT.FILL, SWT.FILL, false, true));
 		colors.setHeaderVisible(true);
 		// fill in the table.
 		for (String columnTitle : columnTitles) {
 			TableColumn tableColumn = new TableColumn(colors, SWT.NONE);
 			tableColumn.setText(columnTitle);
 			tableColumn.setToolTipText(ControlExample.getResourceString("Tooltip", columnTitle));
 		}
 		// fill in the Data. Put an empty line inbetween "Named" and "SWT" colors.
 		boolean emptyLineFlag=false;
 		for (Entry<Integer, String> entry : hmap.entrySet()) {
 			Integer key = entry.getKey();
 			String value = entry.getValue();
 			if (!emptyLineFlag) {
 				TableItem item = new TableItem(colors, SWT.NONE);
 				item.setText(value);
 				item.setText(0, value);
 				item.setText(1, "Named");
 				item.setText(2, getRGBcolor(key));
 				// the spaces will help the color cell be large enough to see
 				item.setText(3, "            ");
 				item.setBackground(3, display.getSystemColor(key));
 				if (key == namedColorEnd) {
 					TableItem emptyItem = new TableItem(colors, SWT.NONE);
 					emptyItem.setText("");
 					emptyLineFlag = true;
 				}
 			} else {
 				TableItem item = new TableItem(colors, SWT.NONE);
 				item.setText(value);
 				item.setText(0, value + " ");
 				item.setText(1, "System ");
 				item.setText(2, getRGBcolor(key) + " ");
 				// the spaces will help the color cell be large enough to see
 				item.setText(3, "            ");
 				item.setBackground(3, display.getSystemColor(key));
 			}
 		}
 		for (int i = 0; i < columnTitles.length; i++) {
 			colors.getColumn(i).pack();
 		}

 		/* Create the cursor table widget */
 		cursors = new Table (cursorsGroup, style | SWT.V_SCROLL);
 		cursors.setLayoutData(new GridData (SWT.FILL, SWT.FILL, false, true));
 		cursors.setHeaderVisible(true);
 		// fill in the table.
 		TableColumn tableColumn = new TableColumn(cursors, SWT.NONE);
 		tableColumn.setText("Cursor");
 		// fill in the Data. Put an empty line inbetween "Named" and "SWT" cursors.
 		for (Entry<Integer, String> entry : cmap.entrySet()) {
 			Integer key = entry.getKey();
 			String value = entry.getValue();
 			TableItem item = new TableItem(cursors, SWT.NONE);
 			item.setText(value);
 			item.setData(display.getSystemCursor(key));
 		}
 		tableColumn.pack();

 		cursors.addListener(SWT.MouseMove, e -> {
 			TableItem item = cursors.getItem(new Point(e.x, e.y));
 			Cursor cursor = (item != null) ? (Cursor) item.getData() : null;
 			cursors.setCursor(cursor);
 		});
 	}

 	/**
 	 * Gets the "Example" widget children.
 	 */
 	@Override
 	Widget [] getExampleWidgets () {
 		return new Widget [] {colors, cursors};
 	}

 	/**
 	 * Gets the Tab name.
 	 */
 	@Override
 	String getTabText () {
 		return "Color";
 	}

 	/**
 	 * Colors only needs Orientation, Size, and Other groups. Everything else will be removed.
 	 */
 	@Override
 	void createSizeGroup () {
 		super.createSizeGroup();

 		packColumnsButton = new Button (sizeGroup, SWT.PUSH);
 		packColumnsButton.setText (ControlExample.getResourceString("Pack_Columns"));
 		packColumnsButton.addSelectionListener(widgetSelectedAdapter(event -> {
 			packColumns ();
 			setExampleWidgetSize ();
 		}));
 	}

 	void packColumns () {
 		int columnCount = colors.getColumnCount();
 		for (int i = 0; i < columnCount; i++) {
 			TableColumn tableColumn = colors.getColumn(i);
 			tableColumn.pack();
 		}
 	}

 	String getRGBcolor(int id){
 		Color color = display.getSystemColor(id);
 		return String.format("(%d,%d,%d,%d)", color.getRed(), color.getGreen(),
 				color.getBlue(), color.getAlpha());
 	}

 	@Override
 	boolean rtlSupport() {
 		return false;
 	}

 	/**
 	 * Override the "Control" group.  The "Control" group
 	 * is typically the right hand column in the tab.
 	 */
 	@Override
 	void createControlGroup () {
 		controlGroup = new Group (tabFolderPage, SWT.NONE);
 		controlGroup.setLayout (new GridLayout (2, true));
 		controlGroup.setLayoutData (new GridData(SWT.FILL, SWT.FILL, false, false));
 		controlGroup.setText (ControlExample.getResourceString("Parameters"));
 		/* Create individual groups inside the "Control" group */
 		createOtherGroup ();
 		createSetGetGroup();
 		createSizeGroup ();
 		createOrientationGroup ();

 		SelectionListener selectionListener = widgetSelectedAdapter(event -> {
 			if ((event.widget.getStyle () & SWT.RADIO) != 0) {
 				if (!((Button) event.widget).getSelection ()) return;
 			}
 			if (!handleTextDirection (event.widget)) {
 				recreateExampleWidgets ();
 			}
 		});
 		// attach listeners to the Orientation buttons
 		rtlButton.addSelectionListener (selectionListener);
 		ltrButton.addSelectionListener (selectionListener);
 		defaultOrietationButton.addSelectionListener (selectionListener);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2016 Red Hat, Inc. and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Ian Pun <ipun@redhat.com> - addition of Color tab
	*******************************************************************************/
	package org.eclipse.swt.examples.controlexample;


	import static org.eclipse.swt.events.SelectionListener.widgetSelectedAdapter;

	import java.util.HashMap;
	import java.util.Map.Entry;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Cursor;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.TableItem;
	import org.eclipse.swt.widgets.Widget;

	class ColorTab extends Tab {
	Table colors, cursors;
	Group colorsGroup, cursorsGroup;
	HashMap <Integer, String> hmap = new HashMap <> ();
	HashMap <Integer, String> cmap = new HashMap <> ();
	static final int namedColorEnd = 8;
	static String [] columnTitles = {ControlExample.getResourceString("ColorTitle_0"),
	ControlExample.getResourceString("ColorTitle_1"),
	ControlExample.getResourceString("ColorTitle_2"),
	ControlExample.getResourceString("ColorTitle_3")};

	/* Size widgets added to the "Size" group */
	Button packColumnsButton;

	/**
	* Creates the color tab within a given instance of ControlExample.
	*/
	ColorTab(ControlExample instance) {
	super(instance);
	addTableElements();
	}

	void addTableElements () {
	hmap.put(SWT.COLOR_WHITE, "COLOR_WHITE");
	hmap.put(SWT.COLOR_BLACK, "COLOR_BLACK");
	hmap.put(SWT.COLOR_RED, "COLOR_RED");
	hmap.put(SWT.COLOR_DARK_RED, "COLOR_DARK_RED");
	hmap.put(SWT.COLOR_GREEN, "COLOR_GREEN");
	hmap.put(SWT.COLOR_DARK_GREEN, "COLOR_DARK_GREEN");
	hmap.put(SWT.COLOR_YELLOW, "COLOR_YELLOW");
	hmap.put(SWT.COLOR_DARK_YELLOW, "COLOR_DARK_YELLOW");
	hmap.put(SWT.COLOR_WIDGET_DARK_SHADOW, "COLOR_WIDGET_DARK_SHADOW");
	hmap.put(SWT.COLOR_WIDGET_NORMAL_SHADOW, "COLOR_WIDGET_NORMAL_SHADOW");
	hmap.put(SWT.COLOR_WIDGET_LIGHT_SHADOW, "COLOR_WIDGET_LIGHT_SHADOW");
	hmap.put(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW, "COLOR_WIDGET_HIGHLIGHT_SHADOW");
	hmap.put(SWT.COLOR_WIDGET_FOREGROUND, "COLOR_WIDGET_FOREGROUND");
	hmap.put(SWT.COLOR_WIDGET_BACKGROUND, "COLOR_WIDGET_BACKGROUND");
	hmap.put(SWT.COLOR_WIDGET_BORDER, "COLOR_WIDGET_BORDER");
	hmap.put(SWT.COLOR_LIST_FOREGROUND, "COLOR_LIST_FOREGROUND");
	hmap.put(SWT.COLOR_LIST_BACKGROUND, "COLOR_LIST_BACKGROUND");
	hmap.put(SWT.COLOR_LIST_SELECTION, "COLOR_LIST_SELECTION");
	hmap.put(SWT.COLOR_LIST_SELECTION_TEXT, "COLOR_LIST_SELECTION_TEXT");
	hmap.put(SWT.COLOR_INFO_FOREGROUND, "COLOR_INFO_FOREGROUND");
	hmap.put(SWT.COLOR_INFO_BACKGROUND, "COLOR_INFO_BACKGROUND");
	hmap.put(SWT.COLOR_TITLE_FOREGROUND, "COLOR_TITLE_FOREGROUND");
	hmap.put(SWT.COLOR_TITLE_BACKGROUND, "COLOR_TITLE_BACKGROUND");
	hmap.put(SWT.COLOR_TITLE_BACKGROUND_GRADIENT, "COLOR_TITLE_BACKGROUND_GRADIENT");
	hmap.put(SWT.COLOR_TITLE_INACTIVE_FOREGROUND, "COLOR_TITLE_INACTIVE_FOREGROUND");
	hmap.put(SWT.COLOR_TITLE_INACTIVE_BACKGROUND, "COLOR_TITLE_INACTIVE_BACKGROUND");
	hmap.put(SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT, "COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT");
	hmap.put(SWT.COLOR_LINK_FOREGROUND, "COLOR_LINK_FOREGROUND");
	hmap.put(SWT.COLOR_WIDGET_DISABLED_FOREGROUND, "COLOR_WIDGET_DISABLED_FOREGROUND");
	hmap.put(SWT.COLOR_TEXT_DISABLED_BACKGROUND, "COLOR_TEXT_DISABLED_BACKGROUND");

	cmap.put(SWT.CURSOR_APPSTARTING, "CURSOR_APPSTARTING");
	cmap.put(SWT.CURSOR_ARROW, "CURSOR_ARROW");
	cmap.put(SWT.CURSOR_WAIT, "CURSOR_WAIT");
	cmap.put(SWT.CURSOR_CROSS, "CURSOR_CROSS");
	cmap.put(SWT.CURSOR_HAND, "CURSOR_HAND");
	cmap.put(SWT.CURSOR_HELP, "CURSOR_HELP");
	cmap.put(SWT.CURSOR_SIZEALL, "CURSOR_SIZEALL");
	cmap.put(SWT.CURSOR_SIZENESW, "CURSOR_SIZENESW");
	cmap.put(SWT.CURSOR_SIZENS, "CURSOR_SIZENS");
	cmap.put(SWT.CURSOR_SIZENWSE, "CURSOR_SIZENWSE");
	cmap.put(SWT.CURSOR_SIZEWE, "CURSOR_SIZEWE");
	cmap.put(SWT.CURSOR_SIZEN, "CURSOR_SIZEN");
	cmap.put(SWT.CURSOR_SIZES, "CURSOR_SIZES");
	cmap.put(SWT.CURSOR_SIZEE, "CURSOR_SIZEE");
	cmap.put(SWT.CURSOR_SIZEW, "CURSOR_SIZEW");
	cmap.put(SWT.CURSOR_SIZENE, "CURSOR_SIZENE");
	cmap.put(SWT.CURSOR_SIZESE, "CURSOR_SIZESE");
	cmap.put(SWT.CURSOR_SIZESW, "CURSOR_SIZESW");
	cmap.put(SWT.CURSOR_SIZENW, "CURSOR_SIZENW");
	cmap.put(SWT.CURSOR_UPARROW, "CURSOR_UPARROW");
	cmap.put(SWT.CURSOR_IBEAM, "CURSOR_IBEAM");
	cmap.put(SWT.CURSOR_NO, "CURSOR_NO");
	}

	/**
	* Creates the "Example" group.
	*/
	@Override
	void createExampleGroup () {
	super.createExampleGroup ();
	exampleGroup.setLayout(new GridLayout(2, false));

	colorsGroup = new Group (exampleGroup, SWT.NONE);
	colorsGroup.setLayout (new GridLayout ());
	colorsGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, true));
	colorsGroup.setText ("Colors");

	cursorsGroup = new Group (exampleGroup, SWT.NONE);
	cursorsGroup.setLayout (new GridLayout ());
	cursorsGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, true));
	cursorsGroup.setText ("Cursors");
	}

	/**
	* Creates the "Example" widgets.
	*/
	@Override
	void createExampleWidgets () {

	/* Create the color table widget */
	/* Compute the widget style */
	int style = getDefaultStyle();
	colors = new Table (colorsGroup, style \| SWT.V_SCROLL);
	colors.setLayoutData(new GridData (SWT.FILL, SWT.FILL, false, true));
	colors.setHeaderVisible(true);
	// fill in the table.
	for (String columnTitle : columnTitles) {
	TableColumn tableColumn = new TableColumn(colors, SWT.NONE);
	tableColumn.setText(columnTitle);
	tableColumn.setToolTipText(ControlExample.getResourceString("Tooltip", columnTitle));
	}
	// fill in the Data. Put an empty line inbetween "Named" and "SWT" colors.
	boolean emptyLineFlag=false;
	for (Entry<Integer, String> entry : hmap.entrySet()) {
	Integer key = entry.getKey();
	String value = entry.getValue();
	if (!emptyLineFlag) {
	TableItem item = new TableItem(colors, SWT.NONE);
	item.setText(value);
	item.setText(0, value);
	item.setText(1, "Named");
	item.setText(2, getRGBcolor(key));
	// the spaces will help the color cell be large enough to see
	item.setText(3, " ");
	item.setBackground(3, display.getSystemColor(key));
	if (key == namedColorEnd) {
	TableItem emptyItem = new TableItem(colors, SWT.NONE);
	emptyItem.setText("");
	emptyLineFlag = true;
	}
	} else {
	TableItem item = new TableItem(colors, SWT.NONE);
	item.setText(value);
	item.setText(0, value + " ");
	item.setText(1, "System ");
	item.setText(2, getRGBcolor(key) + " ");
	// the spaces will help the color cell be large enough to see
	item.setText(3, " ");
	item.setBackground(3, display.getSystemColor(key));
	}
	}
	for (int i = 0; i < columnTitles.length; i++) {
	colors.getColumn(i).pack();
	}

	/* Create the cursor table widget */
	cursors = new Table (cursorsGroup, style \| SWT.V_SCROLL);
	cursors.setLayoutData(new GridData (SWT.FILL, SWT.FILL, false, true));
	cursors.setHeaderVisible(true);
	// fill in the table.
	TableColumn tableColumn = new TableColumn(cursors, SWT.NONE);
	tableColumn.setText("Cursor");
	// fill in the Data. Put an empty line inbetween "Named" and "SWT" cursors.
	for (Entry<Integer, String> entry : cmap.entrySet()) {
	Integer key = entry.getKey();
	String value = entry.getValue();
	TableItem item = new TableItem(cursors, SWT.NONE);
	item.setText(value);
	item.setData(display.getSystemCursor(key));
	}
	tableColumn.pack();

	cursors.addListener(SWT.MouseMove, e -> {
	TableItem item = cursors.getItem(new Point(e.x, e.y));
	Cursor cursor = (item != null) ? (Cursor) item.getData() : null;
	cursors.setCursor(cursor);
	});
	}

	/**
	* Gets the "Example" widget children.
	*/
	@Override
	Widget [] getExampleWidgets () {
	return new Widget [] {colors, cursors};
	}

	/**
	* Gets the Tab name.
	*/
	@Override
	String getTabText () {
	return "Color";
	}

	/**
	* Colors only needs Orientation, Size, and Other groups. Everything else will be removed.
	*/
	@Override
	void createSizeGroup () {
	super.createSizeGroup();

	packColumnsButton = new Button (sizeGroup, SWT.PUSH);
	packColumnsButton.setText (ControlExample.getResourceString("Pack_Columns"));
	packColumnsButton.addSelectionListener(widgetSelectedAdapter(event -> {
	packColumns ();
	setExampleWidgetSize ();
	}));
	}

	void packColumns () {
	int columnCount = colors.getColumnCount();
	for (int i = 0; i < columnCount; i++) {
	TableColumn tableColumn = colors.getColumn(i);
	tableColumn.pack();
	}
	}

	String getRGBcolor(int id){
	Color color = display.getSystemColor(id);
	return String.format("(%d,%d,%d,%d)", color.getRed(), color.getGreen(),
	color.getBlue(), color.getAlpha());
	}

	@Override
	boolean rtlSupport() {
	return false;
	}

	/**
	* Override the "Control" group. The "Control" group
	* is typically the right hand column in the tab.
	*/
	@Override
	void createControlGroup () {
	controlGroup = new Group (tabFolderPage, SWT.NONE);
	controlGroup.setLayout (new GridLayout (2, true));
	controlGroup.setLayoutData (new GridData(SWT.FILL, SWT.FILL, false, false));
	controlGroup.setText (ControlExample.getResourceString("Parameters"));
	/* Create individual groups inside the "Control" group */
	createOtherGroup ();
	createSetGetGroup();
	createSizeGroup ();
	createOrientationGroup ();

	SelectionListener selectionListener = widgetSelectedAdapter(event -> {
	if ((event.widget.getStyle () & SWT.RADIO) != 0) {
	if (!((Button) event.widget).getSelection ()) return;
	}
	if (!handleTextDirection (event.widget)) {
	recreateExampleWidgets ();
	}
	});
	// attach listeners to the Orientation buttons
	rtlButton.addSelectionListener (selectionListener);
	ltrButton.addSelectionListener (selectionListener);
	defaultOrietationButton.addSelectionListener (selectionListener);
	}
	}