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

 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.examples.controlexample;


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

 class TreeTab extends ScrollableTab {
 	/* Example widgets and groups that contain them */
 	Tree tree1, tree2;
 	TreeItem textNode1, imageNode1;
 	Group treeGroup, imageTreeGroup, itemGroup;

 	/* Style widgets added to the "Style" group */
 	Button checkButton, fullSelectionButton;

 	/* Other widgets added to the "Other" group */
 	Button multipleColumns, moveableColumns, headerVisibleButton, linesVisibleButton;

 	/* Controls and resources added to the "Colors and Fonts" group */
 	Button itemForegroundButton, itemBackgroundButton, itemFontButton;
 	Color itemForegroundColor, itemBackgroundColor;
 	Image itemForegroundImage, itemBackgroundImage;
 	Font itemFont;
 	boolean setItemFont = false, setItemForeground = false, setItemBackground = false;

 	static String [] columnTitles	= {ControlExample.getResourceString("TableTitle_0"),
 		   ControlExample.getResourceString("TableTitle_1"),
 		   ControlExample.getResourceString("TableTitle_2"),
 		   ControlExample.getResourceString("TableTitle_3")};

 	static String[][] tableData = {
 			{ ControlExample.getResourceString("TableLine0_0"),
 					ControlExample.getResourceString("TableLine0_1"),
 					ControlExample.getResourceString("TableLine0_2"),
 					ControlExample.getResourceString("TableLine0_3") },
 			{ ControlExample.getResourceString("TableLine1_0"),
 					ControlExample.getResourceString("TableLine1_1"),
 					ControlExample.getResourceString("TableLine1_2"),
 					ControlExample.getResourceString("TableLine1_3") },
 			{ ControlExample.getResourceString("TableLine2_0"),
 					ControlExample.getResourceString("TableLine2_1"),
 					ControlExample.getResourceString("TableLine2_2"),
 					ControlExample.getResourceString("TableLine2_3") } };

 	/**
 	 * Creates the Tab within a given instance of ControlExample.
 	 */
 	TreeTab(ControlExample instance) {
 		super(instance);
 	}

 	/**
 	 * Creates the "Colors and Fonts" group.
 	 */
 	void createColorAndFontGroup () {
 		super.createColorAndFontGroup();

 		itemGroup = new Group (colorGroup, SWT.NONE);
 		itemGroup.setText (ControlExample.getResourceString ("Tree_Item_Colors"));
 		GridData data = new GridData ();
 		data.horizontalSpan = 2;
 		itemGroup.setLayoutData (data);
 		itemGroup.setLayout (new GridLayout (2, false));
 		new Label (itemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Foreground_Color"));
 		itemForegroundButton = new Button (itemGroup, SWT.PUSH);
 		new Label (itemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Background_Color"));
 		itemBackgroundButton = new Button (itemGroup, SWT.PUSH);
 		itemFontButton = new Button (itemGroup, SWT.PUSH);
 		itemFontButton.setText(ControlExample.getResourceString("Font"));
 		itemFontButton.setLayoutData(new GridData (GridData.HORIZONTAL_ALIGN_FILL));

 		Shell shell = colorGroup.getShell ();
 		final ColorDialog foregroundDialog = new ColorDialog (shell);
 		final ColorDialog backgroundDialog = new ColorDialog (shell);
 		final FontDialog fontDialog = new FontDialog (shell);

 		int imageSize = 12;
 		Display display = shell.getDisplay ();
 		itemForegroundImage = new Image(display, imageSize, imageSize);
 		itemBackgroundImage = new Image(display, imageSize, imageSize);

 		/* Add listeners to set the colors and font */
 		itemForegroundButton.setImage(itemForegroundImage);
 		itemForegroundButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent event) {
 				Color oldColor = itemForegroundColor;
 				if (oldColor == null) oldColor = textNode1.getForeground ();
 				foregroundDialog.setRGB(oldColor.getRGB());
 				RGB rgb = foregroundDialog.open();
 				if (rgb == null) return;
 				oldColor = itemForegroundColor;
 				itemForegroundColor = new Color (event.display, rgb);
 				setItemForeground = true;
 				setItemForeground ();
 				if (oldColor != null) oldColor.dispose ();
 			}
 		});
 		itemBackgroundButton.setImage(itemBackgroundImage);
 		itemBackgroundButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent event) {
 				Color oldColor = itemBackgroundColor;
 				if (oldColor == null) oldColor = textNode1.getBackground ();
 				backgroundDialog.setRGB(oldColor.getRGB());
 				RGB rgb = backgroundDialog.open();
 				if (rgb == null) return;
 				oldColor = itemBackgroundColor;
 				itemBackgroundColor = new Color (event.display, rgb);
 				setItemBackground = true;
 				setItemBackground ();
 				if (oldColor != null) oldColor.dispose ();
 			}
 		});
 		itemFontButton.addSelectionListener(new SelectionAdapter () {
 			public void widgetSelected (SelectionEvent event) {
 				Font oldFont = itemFont;
 				if (oldFont == null) oldFont = textNode1.getFont ();
 				fontDialog.setFontList(oldFont.getFontData());
 				FontData fontData = fontDialog.open ();
 				if (fontData == null) return;
 				oldFont = itemFont;
 				itemFont = new Font (event.display, fontData);
 				setItemFont = true;
 				setItemFont ();
 				setExampleWidgetSize ();
 				if (oldFont != null) oldFont.dispose ();
 			}
 		});
 		shell.addDisposeListener(new DisposeListener() {
 			public void widgetDisposed(DisposeEvent event) {
 				if (itemBackgroundImage != null) itemBackgroundImage.dispose();
 				if (itemForegroundImage != null) itemForegroundImage.dispose();
 				if (itemBackgroundColor != null) itemBackgroundColor.dispose();
 				if (itemForegroundColor != null) itemForegroundColor.dispose();
 				if (itemFont != null) itemFont.dispose();
 				itemBackgroundColor = null;
 				itemForegroundColor = null;
 				itemFont = null;
 			}
 		});
 	}

 	/**
 	 * Creates the "Other" group.
 	 */
 	void createOtherGroup () {
 		super.createOtherGroup ();

 		/* Create display controls specific to this example */
 		headerVisibleButton = new Button (otherGroup, SWT.CHECK);
 		headerVisibleButton.setText (ControlExample.getResourceString("Header_Visible"));
 		multipleColumns = new Button (otherGroup, SWT.CHECK);
 		multipleColumns.setText (ControlExample.getResourceString("Multiple_Columns"));
 		moveableColumns = new Button (otherGroup, SWT.CHECK);
 		moveableColumns.setText (ControlExample.getResourceString("Moveable_Columns"));
 		moveableColumns.setSelection(false);
 		linesVisibleButton = new Button (otherGroup, SWT.CHECK);
 		linesVisibleButton.setText (ControlExample.getResourceString("Lines_Visible"));

 		/* Add the listeners */
 		headerVisibleButton.addSelectionListener (new SelectionAdapter () {
 			public void widgetSelected (SelectionEvent event) {
 				setWidgetHeaderVisible ();
 			}
 		});
 		multipleColumns.addSelectionListener (new SelectionAdapter () {
 			public void widgetSelected (SelectionEvent event) {
 				recreateExampleWidgets ();
 			}
 		});
 		moveableColumns.addSelectionListener (new SelectionAdapter () {
 			public void widgetSelected (SelectionEvent event) {
 				setColumnsMoveable ();
 			}
 		});
 		linesVisibleButton.addSelectionListener (new SelectionAdapter () {
 			public void widgetSelected (SelectionEvent event) {
 				setWidgetLinesVisible ();
 			}
 		});
 	}

 	/**
 	 * Creates the "Example" group.
 	 */
 	void createExampleGroup () {
 		super.createExampleGroup ();

 		/* Create a group for the text tree */
 		treeGroup = new Group (exampleGroup, SWT.NONE);
 		treeGroup.setLayout (new GridLayout ());
 		treeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
 		treeGroup.setText ("Tree");

 		/* Create a group for the image tree */
 		imageTreeGroup = new Group (exampleGroup, SWT.NONE);
 		imageTreeGroup.setLayout (new GridLayout ());
 		imageTreeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
 		imageTreeGroup.setText (ControlExample.getResourceString("Tree_With_Images"));
 	}

 	/**
 	 * Creates the "Example" widgets.
 	 */
 	void createExampleWidgets () {
 		/* Compute the widget style */
 		int style = getDefaultStyle();
 		if (singleButton.getSelection()) style |= SWT.SINGLE;
 		if (multiButton.getSelection()) style |= SWT.MULTI;
 		if (checkButton.getSelection()) style |= SWT.CHECK;
 		if (fullSelectionButton.getSelection ()) style |= SWT.FULL_SELECTION;
 		if (borderButton.getSelection()) style |= SWT.BORDER;

 		/* Create the text tree */
 		tree1 = new Tree (treeGroup, style);
 		if (multipleColumns.getSelection()) {
 			for (int i = 0; i < columnTitles.length; i++) {
 				TreeColumn treeColumn = new TreeColumn(tree1, SWT.NONE);
 				treeColumn.setText(columnTitles[i]);
 				treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip", new String [] {columnTitles[i]}));
 			}
 			tree1.setSortColumn(tree1.getColumn(0));
 		}
 		for (int i = 0; i < 4; i++) {
 			TreeItem item = new TreeItem (tree1, SWT.NONE);
 			setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
 			if (i < 3) {
 				TreeItem subitem = new TreeItem (item, SWT.NONE);
 				setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
 			}
 		}
 		TreeItem treeRoots[] = tree1.getItems ();
 		TreeItem item = new TreeItem (treeRoots[1], SWT.NONE);
 		setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
 		item = new TreeItem (item, SWT.NONE);
 		setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));
 		textNode1 = treeRoots[0];
 		packColumns(tree1);

 		/* Create the image tree */
 		tree2 = new Tree (imageTreeGroup, style);
 		Image image = instance.images[ControlExample.ciClosedFolder];
 		if (multipleColumns.getSelection()) {
 			for (int i = 0; i < columnTitles.length; i++) {
 				TreeColumn treeColumn = new TreeColumn(tree2, SWT.NONE);
 				treeColumn.setText(columnTitles[i]);
 				treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip") + columnTitles[i]);
 			}
 		}
 		for (int i = 0; i < 4; i++) {
 			item = new TreeItem (tree2, SWT.NONE);
 			setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
 			item.setImage(image);
 			if (i < 3) {
 				TreeItem subitem = new TreeItem (item, SWT.NONE);
 				setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
 				subitem.setImage(image);
 			}
 		}
 		treeRoots = tree2.getItems ();
 		item = new TreeItem (treeRoots[1], SWT.NONE);
 		setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
 		item.setImage(image);
 		item = new TreeItem (item, SWT.NONE);
 		setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));
 		item.setImage(image);
 		imageNode1 = treeRoots[0];
 		packColumns(tree2);

 		setColumnsMoveable();
 	}

 	void setItemText(TreeItem item, int i, String node) {
 		int index = i % 3;
 		if (multipleColumns.getSelection()) {
 			tableData [index][0] = node;
 			item.setText (tableData [index]);
 		} else {
 			item.setText (node);
 		}
 	}

 	/**
 	 * Creates the "Style" group.
 	 */
 	void createStyleGroup() {
 		super.createStyleGroup();

 		/* Create the extra widgets */
 		checkButton = new Button (styleGroup, SWT.CHECK);
 		checkButton.setText ("SWT.CHECK");
 		fullSelectionButton = new Button (styleGroup, SWT.CHECK);
 		fullSelectionButton.setText ("SWT.FULL_SELECTION");
 	}

 	/**
 	 * Gets the "Example" widget children's items, if any.
 	 *
 	 * @return an array containing the example widget children's items
 	 */
 	Item [] getExampleWidgetItems () {
 		/* Note: We do not bother collecting the tree items
 		 * because tree items don't have any events. If events
 		 * are ever added to TreeItem, then this needs to change.
 		 */
 		Item [] columns1 = tree1.getColumns();
 		Item [] columns2 = tree2.getColumns();
 		Item [] allItems = new Item [columns1.length + columns2.length];
 		System.arraycopy(columns1, 0, allItems, 0, columns1.length);
 		System.arraycopy(columns2, 0, allItems, columns1.length, columns2.length);
 		return allItems;
 	}

 	/**
 	 * Gets the "Example" widget children.
 	 */
 	Control [] getExampleWidgets () {
 		return new Control [] {tree1, tree2};
 	}

 	/**
 	 * Returns a list of set/get API method names (without the set/get prefix)
 	 * that can be used to set/get values in the example control(s).
 	 */
 	String[] getMethodNames() {
 		return new String[] {"ColumnOrder", "Selection", "SortDirection", "ToolTipText", "TopItem"};
 	}

 	Object[] parameterForType(String typeName, String value, Control control) {
 		if (typeName.equals("org.eclipse.swt.widgets.TreeItem")) {
 			TreeItem item = findItem(value, ((Tree) control).getItems());
 			if (item != null) return new Object[] {item};
 		}
 		if (typeName.equals("[Lorg.eclipse.swt.widgets.TreeItem;")) {
 			String[] values = value.split(",");
 			TreeItem[] items = new TreeItem[values.length];
 			for (int i = 0; i < values.length; i++) {
 				TreeItem item = findItem(values[i], ((Tree) control).getItems());
 				if (item == null) break;
 				items[i] = item;
 			}
 			return new Object[] {items};
 		}
 		return super.parameterForType(typeName, value, control);
 	}

 	TreeItem findItem(String value, TreeItem[] items) {
 		for (int i = 0; i < items.length; i++) {
 			TreeItem item = items[i];
 			if (item.getText().equals(value)) return item;
 			item = findItem(value, item.getItems());
 			if (item != null) return item;
 		}
 		return null;
 	}

 	/**
 	 * Gets the text for the tab folder item.
 	 */
 	String getTabText () {
 		return "Tree";
 	}

 	void packColumns (Tree tree) {
 		if (multipleColumns.getSelection()) {
 			int columnCount = tree.getColumnCount();
 			for (int i = 0; i < columnCount; i++) {
 				TreeColumn treeColumn = tree.getColumn(i);
 				treeColumn.pack();
 			}
 		}
 	}

 	/**
 	 * Sets the moveable columns state of the "Example" widgets.
 	 */
 	void setColumnsMoveable () {
 		boolean selection = moveableColumns.getSelection();
 		TreeColumn[] columns1 = tree1.getColumns();
 		for (int i = 0; i < columns1.length; i++) {
 			columns1[i].setMoveable(selection);
 		}
 		TreeColumn[] columns2 = tree2.getColumns();
 		for (int i = 0; i < columns2.length; i++) {
 			columns2[i].setMoveable(selection);
 		}
 	}

 	/**
 	 * Sets the foreground color, background color, and font
 	 * of the "Example" widgets to their default settings.
 	 * Also sets foreground and background color of the Node 1
 	 * TreeItems to default settings.
 	 */
 	void resetColorsAndFonts () {
 		super.resetColorsAndFonts ();
 		Color oldColor = itemForegroundColor;
 		itemForegroundColor = null;
 		setItemForeground ();
 		if (oldColor != null) oldColor.dispose();
 		oldColor = itemBackgroundColor;
 		itemBackgroundColor = null;
 		setItemBackground ();
 		if (oldColor != null) oldColor.dispose();
 		Font oldFont = font;
 		itemFont = null;
 		setItemFont ();
 		if (oldFont != null) oldFont.dispose();
 	}

 	/**
 	 * Sets the state of the "Example" widgets.
 	 */
 	void setExampleWidgetState () {
 		super.setExampleWidgetState ();
 		setItemBackground ();
 		setItemForeground ();
 		setItemFont ();
 		setExampleWidgetSize ();
 		setWidgetHeaderVisible ();
 		setWidgetLinesVisible ();
 		checkButton.setSelection ((tree1.getStyle () & SWT.CHECK) != 0);
 		checkButton.setSelection ((tree2.getStyle () & SWT.CHECK) != 0);
 		fullSelectionButton.setSelection ((tree1.getStyle () & SWT.FULL_SELECTION) != 0);
 		fullSelectionButton.setSelection ((tree2.getStyle () & SWT.FULL_SELECTION) != 0);
 	}

 	/**
 	 * Sets the background color of the Node 1 TreeItems.
 	 */
 	void setItemBackground () {
 		if (setItemBackground) {
 			textNode1.setBackground (itemBackgroundColor);
 			imageNode1.setBackground (itemBackgroundColor);
 		}
 		/* Set the background button's color to match the background color of the item. */
 		Color color = itemBackgroundColor;
 		if (color == null) color = textNode1.getBackground ();
 		drawImage (itemBackgroundImage, color);
 		itemBackgroundButton.setImage (itemBackgroundImage);
 	}

 	/**
 	 * Sets the foreground color of the Node 1 TreeItems.
 	 */
 	void setItemForeground () {
 		if (setItemForeground) {
 			textNode1.setForeground (itemForegroundColor);
 			imageNode1.setForeground (itemForegroundColor);
 		}
 		/* Set the foreground button's color to match the foreground color of the item. */
 		Color color = itemForegroundColor;
 		if (color == null) color = textNode1.getForeground ();
 		drawImage (itemForegroundImage, color);
 		itemForegroundButton.setImage (itemForegroundImage);
 	}

 	/**
 	 * Sets the font of the Node 1 TreeItems.
 	 */
 	void setItemFont () {
 		if (instance.startup) return;
 		if (!setItemFont) return;
 		textNode1.setFont (itemFont);
 		imageNode1.setFont (itemFont);
 		packColumns (tree1);
 	}

 	/**
 	 * Sets the font of the "Example" widgets.
 	 */
 	void setExampleWidgetFont () {
 		super.setExampleWidgetFont();
 		if (!setFont) return;
 		packColumns (tree1);
 		packColumns (tree2);
 	}

 	/**
 	 * Sets the header visible state of the "Example" widgets.
 	 */
 	void setWidgetHeaderVisible () {
 		tree1.setHeaderVisible (headerVisibleButton.getSelection ());
 		tree2.setHeaderVisible (headerVisibleButton.getSelection ());
 	}

 	/**
 	 * Sets the lines visible state of the "Example" widgets.
 	 */
 	void setWidgetLinesVisible () {
 		tree1.setLinesVisible (linesVisibleButton.getSelection ());
 		tree2.setLinesVisible (linesVisibleButton.getSelection ());
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.examples.controlexample;


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

	class TreeTab extends ScrollableTab {
	/* Example widgets and groups that contain them */
	Tree tree1, tree2;
	TreeItem textNode1, imageNode1;
	Group treeGroup, imageTreeGroup, itemGroup;

	/* Style widgets added to the "Style" group */
	Button checkButton, fullSelectionButton;

	/* Other widgets added to the "Other" group */
	Button multipleColumns, moveableColumns, headerVisibleButton, linesVisibleButton;

	/* Controls and resources added to the "Colors and Fonts" group */
	Button itemForegroundButton, itemBackgroundButton, itemFontButton;
	Color itemForegroundColor, itemBackgroundColor;
	Image itemForegroundImage, itemBackgroundImage;
	Font itemFont;
	boolean setItemFont = false, setItemForeground = false, setItemBackground = false;

	static String [] columnTitles = {ControlExample.getResourceString("TableTitle_0"),
	ControlExample.getResourceString("TableTitle_1"),
	ControlExample.getResourceString("TableTitle_2"),
	ControlExample.getResourceString("TableTitle_3")};

	static String[][] tableData = {
	{ ControlExample.getResourceString("TableLine0_0"),
	ControlExample.getResourceString("TableLine0_1"),
	ControlExample.getResourceString("TableLine0_2"),
	ControlExample.getResourceString("TableLine0_3") },
	{ ControlExample.getResourceString("TableLine1_0"),
	ControlExample.getResourceString("TableLine1_1"),
	ControlExample.getResourceString("TableLine1_2"),
	ControlExample.getResourceString("TableLine1_3") },
	{ ControlExample.getResourceString("TableLine2_0"),
	ControlExample.getResourceString("TableLine2_1"),
	ControlExample.getResourceString("TableLine2_2"),
	ControlExample.getResourceString("TableLine2_3") } };

	/**
	* Creates the Tab within a given instance of ControlExample.
	*/
	TreeTab(ControlExample instance) {
	super(instance);
	}

	/**
	* Creates the "Colors and Fonts" group.
	*/
	void createColorAndFontGroup () {
	super.createColorAndFontGroup();

	itemGroup = new Group (colorGroup, SWT.NONE);
	itemGroup.setText (ControlExample.getResourceString ("Tree_Item_Colors"));
	GridData data = new GridData ();
	data.horizontalSpan = 2;
	itemGroup.setLayoutData (data);
	itemGroup.setLayout (new GridLayout (2, false));
	new Label (itemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Foreground_Color"));
	itemForegroundButton = new Button (itemGroup, SWT.PUSH);
	new Label (itemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Background_Color"));
	itemBackgroundButton = new Button (itemGroup, SWT.PUSH);
	itemFontButton = new Button (itemGroup, SWT.PUSH);
	itemFontButton.setText(ControlExample.getResourceString("Font"));
	itemFontButton.setLayoutData(new GridData (GridData.HORIZONTAL_ALIGN_FILL));

	Shell shell = colorGroup.getShell ();
	final ColorDialog foregroundDialog = new ColorDialog (shell);
	final ColorDialog backgroundDialog = new ColorDialog (shell);
	final FontDialog fontDialog = new FontDialog (shell);

	int imageSize = 12;
	Display display = shell.getDisplay ();
	itemForegroundImage = new Image(display, imageSize, imageSize);
	itemBackgroundImage = new Image(display, imageSize, imageSize);

	/* Add listeners to set the colors and font */
	itemForegroundButton.setImage(itemForegroundImage);
	itemForegroundButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	Color oldColor = itemForegroundColor;
	if (oldColor == null) oldColor = textNode1.getForeground ();
	foregroundDialog.setRGB(oldColor.getRGB());
	RGB rgb = foregroundDialog.open();
	if (rgb == null) return;
	oldColor = itemForegroundColor;
	itemForegroundColor = new Color (event.display, rgb);
	setItemForeground = true;
	setItemForeground ();
	if (oldColor != null) oldColor.dispose ();
	}
	});
	itemBackgroundButton.setImage(itemBackgroundImage);
	itemBackgroundButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	Color oldColor = itemBackgroundColor;
	if (oldColor == null) oldColor = textNode1.getBackground ();
	backgroundDialog.setRGB(oldColor.getRGB());
	RGB rgb = backgroundDialog.open();
	if (rgb == null) return;
	oldColor = itemBackgroundColor;
	itemBackgroundColor = new Color (event.display, rgb);
	setItemBackground = true;
	setItemBackground ();
	if (oldColor != null) oldColor.dispose ();
	}
	});
	itemFontButton.addSelectionListener(new SelectionAdapter () {
	public void widgetSelected (SelectionEvent event) {
	Font oldFont = itemFont;
	if (oldFont == null) oldFont = textNode1.getFont ();
	fontDialog.setFontList(oldFont.getFontData());
	FontData fontData = fontDialog.open ();
	if (fontData == null) return;
	oldFont = itemFont;
	itemFont = new Font (event.display, fontData);
	setItemFont = true;
	setItemFont ();
	setExampleWidgetSize ();
	if (oldFont != null) oldFont.dispose ();
	}
	});
	shell.addDisposeListener(new DisposeListener() {
	public void widgetDisposed(DisposeEvent event) {
	if (itemBackgroundImage != null) itemBackgroundImage.dispose();
	if (itemForegroundImage != null) itemForegroundImage.dispose();
	if (itemBackgroundColor != null) itemBackgroundColor.dispose();
	if (itemForegroundColor != null) itemForegroundColor.dispose();
	if (itemFont != null) itemFont.dispose();
	itemBackgroundColor = null;
	itemForegroundColor = null;
	itemFont = null;
	}
	});
	}

	/**
	* Creates the "Other" group.
	*/
	void createOtherGroup () {
	super.createOtherGroup ();

	/* Create display controls specific to this example */
	headerVisibleButton = new Button (otherGroup, SWT.CHECK);
	headerVisibleButton.setText (ControlExample.getResourceString("Header_Visible"));
	multipleColumns = new Button (otherGroup, SWT.CHECK);
	multipleColumns.setText (ControlExample.getResourceString("Multiple_Columns"));
	moveableColumns = new Button (otherGroup, SWT.CHECK);
	moveableColumns.setText (ControlExample.getResourceString("Moveable_Columns"));
	moveableColumns.setSelection(false);
	linesVisibleButton = new Button (otherGroup, SWT.CHECK);
	linesVisibleButton.setText (ControlExample.getResourceString("Lines_Visible"));

	/* Add the listeners */
	headerVisibleButton.addSelectionListener (new SelectionAdapter () {
	public void widgetSelected (SelectionEvent event) {
	setWidgetHeaderVisible ();
	}
	});
	multipleColumns.addSelectionListener (new SelectionAdapter () {
	public void widgetSelected (SelectionEvent event) {
	recreateExampleWidgets ();
	}
	});
	moveableColumns.addSelectionListener (new SelectionAdapter () {
	public void widgetSelected (SelectionEvent event) {
	setColumnsMoveable ();
	}
	});
	linesVisibleButton.addSelectionListener (new SelectionAdapter () {
	public void widgetSelected (SelectionEvent event) {
	setWidgetLinesVisible ();
	}
	});
	}

	/**
	* Creates the "Example" group.
	*/
	void createExampleGroup () {
	super.createExampleGroup ();

	/* Create a group for the text tree */
	treeGroup = new Group (exampleGroup, SWT.NONE);
	treeGroup.setLayout (new GridLayout ());
	treeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
	treeGroup.setText ("Tree");

	/* Create a group for the image tree */
	imageTreeGroup = new Group (exampleGroup, SWT.NONE);
	imageTreeGroup.setLayout (new GridLayout ());
	imageTreeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
	imageTreeGroup.setText (ControlExample.getResourceString("Tree_With_Images"));
	}

	/**
	* Creates the "Example" widgets.
	*/
	void createExampleWidgets () {
	/* Compute the widget style */
	int style = getDefaultStyle();
	if (singleButton.getSelection()) style \|= SWT.SINGLE;
	if (multiButton.getSelection()) style \|= SWT.MULTI;
	if (checkButton.getSelection()) style \|= SWT.CHECK;
	if (fullSelectionButton.getSelection ()) style \|= SWT.FULL_SELECTION;
	if (borderButton.getSelection()) style \|= SWT.BORDER;

	/* Create the text tree */
	tree1 = new Tree (treeGroup, style);
	if (multipleColumns.getSelection()) {
	for (int i = 0; i < columnTitles.length; i++) {
	TreeColumn treeColumn = new TreeColumn(tree1, SWT.NONE);
	treeColumn.setText(columnTitles[i]);
	treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip", new String [] {columnTitles[i]}));
	}
	tree1.setSortColumn(tree1.getColumn(0));
	}
	for (int i = 0; i < 4; i++) {
	TreeItem item = new TreeItem (tree1, SWT.NONE);
	setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
	if (i < 3) {
	TreeItem subitem = new TreeItem (item, SWT.NONE);
	setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
	}
	}
	TreeItem treeRoots[] = tree1.getItems ();
	TreeItem item = new TreeItem (treeRoots[1], SWT.NONE);
	setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
	item = new TreeItem (item, SWT.NONE);
	setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));
	textNode1 = treeRoots[0];
	packColumns(tree1);

	/* Create the image tree */
	tree2 = new Tree (imageTreeGroup, style);
	Image image = instance.images[ControlExample.ciClosedFolder];
	if (multipleColumns.getSelection()) {
	for (int i = 0; i < columnTitles.length; i++) {
	TreeColumn treeColumn = new TreeColumn(tree2, SWT.NONE);
	treeColumn.setText(columnTitles[i]);
	treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip") + columnTitles[i]);
	}
	}
	for (int i = 0; i < 4; i++) {
	item = new TreeItem (tree2, SWT.NONE);
	setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
	item.setImage(image);
	if (i < 3) {
	TreeItem subitem = new TreeItem (item, SWT.NONE);
	setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
	subitem.setImage(image);
	}
	}
	treeRoots = tree2.getItems ();
	item = new TreeItem (treeRoots[1], SWT.NONE);
	setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
	item.setImage(image);
	item = new TreeItem (item, SWT.NONE);
	setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));
	item.setImage(image);
	imageNode1 = treeRoots[0];
	packColumns(tree2);

	setColumnsMoveable();
	}

	void setItemText(TreeItem item, int i, String node) {
	int index = i % 3;
	if (multipleColumns.getSelection()) {
	tableData [index][0] = node;
	item.setText (tableData [index]);
	} else {
	item.setText (node);
	}
	}

	/**
	* Creates the "Style" group.
	*/
	void createStyleGroup() {
	super.createStyleGroup();

	/* Create the extra widgets */
	checkButton = new Button (styleGroup, SWT.CHECK);
	checkButton.setText ("SWT.CHECK");
	fullSelectionButton = new Button (styleGroup, SWT.CHECK);
	fullSelectionButton.setText ("SWT.FULL_SELECTION");
	}

	/**
	* Gets the "Example" widget children's items, if any.
	*
	* @return an array containing the example widget children's items
	*/
	Item [] getExampleWidgetItems () {
	/* Note: We do not bother collecting the tree items
	* because tree items don't have any events. If events
	* are ever added to TreeItem, then this needs to change.
	*/
	Item [] columns1 = tree1.getColumns();
	Item [] columns2 = tree2.getColumns();
	Item [] allItems = new Item [columns1.length + columns2.length];
	System.arraycopy(columns1, 0, allItems, 0, columns1.length);
	System.arraycopy(columns2, 0, allItems, columns1.length, columns2.length);
	return allItems;
	}

	/**
	* Gets the "Example" widget children.
	*/
	Control [] getExampleWidgets () {
	return new Control [] {tree1, tree2};
	}

	/**
	* Returns a list of set/get API method names (without the set/get prefix)
	* that can be used to set/get values in the example control(s).
	*/
	String[] getMethodNames() {
	return new String[] {"ColumnOrder", "Selection", "SortDirection", "ToolTipText", "TopItem"};
	}

	Object[] parameterForType(String typeName, String value, Control control) {
	if (typeName.equals("org.eclipse.swt.widgets.TreeItem")) {
	TreeItem item = findItem(value, ((Tree) control).getItems());
	if (item != null) return new Object[] {item};
	}
	if (typeName.equals("[Lorg.eclipse.swt.widgets.TreeItem;")) {
	String[] values = value.split(",");
	TreeItem[] items = new TreeItem[values.length];
	for (int i = 0; i < values.length; i++) {
	TreeItem item = findItem(values[i], ((Tree) control).getItems());
	if (item == null) break;
	items[i] = item;
	}
	return new Object[] {items};
	}
	return super.parameterForType(typeName, value, control);
	}

	TreeItem findItem(String value, TreeItem[] items) {
	for (int i = 0; i < items.length; i++) {
	TreeItem item = items[i];
	if (item.getText().equals(value)) return item;
	item = findItem(value, item.getItems());
	if (item != null) return item;
	}
	return null;
	}

	/**
	* Gets the text for the tab folder item.
	*/
	String getTabText () {
	return "Tree";
	}

	void packColumns (Tree tree) {
	if (multipleColumns.getSelection()) {
	int columnCount = tree.getColumnCount();
	for (int i = 0; i < columnCount; i++) {
	TreeColumn treeColumn = tree.getColumn(i);
	treeColumn.pack();
	}
	}
	}

	/**
	* Sets the moveable columns state of the "Example" widgets.
	*/
	void setColumnsMoveable () {
	boolean selection = moveableColumns.getSelection();
	TreeColumn[] columns1 = tree1.getColumns();
	for (int i = 0; i < columns1.length; i++) {
	columns1[i].setMoveable(selection);
	}
	TreeColumn[] columns2 = tree2.getColumns();
	for (int i = 0; i < columns2.length; i++) {
	columns2[i].setMoveable(selection);
	}
	}

	/**
	* Sets the foreground color, background color, and font
	* of the "Example" widgets to their default settings.
	* Also sets foreground and background color of the Node 1
	* TreeItems to default settings.
	*/
	void resetColorsAndFonts () {
	super.resetColorsAndFonts ();
	Color oldColor = itemForegroundColor;
	itemForegroundColor = null;
	setItemForeground ();
	if (oldColor != null) oldColor.dispose();
	oldColor = itemBackgroundColor;
	itemBackgroundColor = null;
	setItemBackground ();
	if (oldColor != null) oldColor.dispose();
	Font oldFont = font;
	itemFont = null;
	setItemFont ();
	if (oldFont != null) oldFont.dispose();
	}

	/**
	* Sets the state of the "Example" widgets.
	*/
	void setExampleWidgetState () {
	super.setExampleWidgetState ();
	setItemBackground ();
	setItemForeground ();
	setItemFont ();
	setExampleWidgetSize ();
	setWidgetHeaderVisible ();
	setWidgetLinesVisible ();
	checkButton.setSelection ((tree1.getStyle () & SWT.CHECK) != 0);
	checkButton.setSelection ((tree2.getStyle () & SWT.CHECK) != 0);
	fullSelectionButton.setSelection ((tree1.getStyle () & SWT.FULL_SELECTION) != 0);
	fullSelectionButton.setSelection ((tree2.getStyle () & SWT.FULL_SELECTION) != 0);
	}

	/**
	* Sets the background color of the Node 1 TreeItems.
	*/
	void setItemBackground () {
	if (setItemBackground) {
	textNode1.setBackground (itemBackgroundColor);
	imageNode1.setBackground (itemBackgroundColor);
	}
	/* Set the background button's color to match the background color of the item. */
	Color color = itemBackgroundColor;
	if (color == null) color = textNode1.getBackground ();
	drawImage (itemBackgroundImage, color);
	itemBackgroundButton.setImage (itemBackgroundImage);
	}

	/**
	* Sets the foreground color of the Node 1 TreeItems.
	*/
	void setItemForeground () {
	if (setItemForeground) {
	textNode1.setForeground (itemForegroundColor);
	imageNode1.setForeground (itemForegroundColor);
	}
	/* Set the foreground button's color to match the foreground color of the item. */
	Color color = itemForegroundColor;
	if (color == null) color = textNode1.getForeground ();
	drawImage (itemForegroundImage, color);
	itemForegroundButton.setImage (itemForegroundImage);
	}

	/**
	* Sets the font of the Node 1 TreeItems.
	*/
	void setItemFont () {
	if (instance.startup) return;
	if (!setItemFont) return;
	textNode1.setFont (itemFont);
	imageNode1.setFont (itemFont);
	packColumns (tree1);
	}

	/**
	* Sets the font of the "Example" widgets.
	*/
	void setExampleWidgetFont () {
	super.setExampleWidgetFont();
	if (!setFont) return;
	packColumns (tree1);
	packColumns (tree2);
	}

	/**
	* Sets the header visible state of the "Example" widgets.
	*/
	void setWidgetHeaderVisible () {
	tree1.setHeaderVisible (headerVisibleButton.getSelection ());
	tree2.setHeaderVisible (headerVisibleButton.getSelection ());
	}

	/**
	* Sets the lines visible state of the "Example" widgets.
	*/
	void setWidgetLinesVisible () {
	tree1.setLinesVisible (linesVisibleButton.getSelection ());
	tree2.setLinesVisible (linesVisibleButton.getSelection ());
	}
	}