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

 /*******************************************************************************
  * 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.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;

 	/* Controls and resources added to the "Colors" group */
 	Button itemForegroundButton, itemBackgroundButton, itemFontButton;
 	Color itemForegroundColor, itemBackgroundColor;
 	Image itemForegroundImage, itemBackgroundImage;
 	Font itemFont;

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

 	/**
 	 * Creates the "Colors" group.
 	 */
 	void createColorGroup () {
 		super.createColorGroup();

 		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 ();
 				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 ();
 				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 ();
 				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 "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 (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
 		treeGroup.setText ("Tree");

 		/* Create a group for the image tree */
 		imageTreeGroup = new Group (exampleGroup, SWT.NONE);
 		imageTreeGroup.setLayout (new GridLayout ());
 		imageTreeGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
 		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 (borderButton.getSelection()) style |= SWT.BORDER;

 		/* Create the text tree */
 		tree1 = new Tree (treeGroup, style);
 		textNode1 = new TreeItem (tree1, SWT.NONE);
 		textNode1.setText (ControlExample.getResourceString("Node_1"));
 		TreeItem node2 = new TreeItem (tree1, SWT.NONE);
 		node2.setText (ControlExample.getResourceString("Node_2"));
 		TreeItem node3 = new TreeItem (tree1, SWT.NONE);
 		node3.setText (ControlExample.getResourceString("Node_3"));
 		TreeItem node4 = new TreeItem (tree1, SWT.NONE);
 		node4.setText (ControlExample.getResourceString("Node_4"));
 		TreeItem node1_1 = new TreeItem (textNode1, SWT.NONE);
 		node1_1.setText (ControlExample.getResourceString("Node_1_1"));
 		TreeItem node2_1 = new TreeItem (node2, SWT.NONE);
 		node2_1.setText (ControlExample.getResourceString("Node_2_1"));
 		TreeItem node3_1 = new TreeItem (node3, SWT.NONE);
 		node3_1.setText (ControlExample.getResourceString("Node_3_1"));
 		TreeItem node2_2 = new TreeItem (node2, SWT.NONE);
 		node2_2.setText (ControlExample.getResourceString("Node_2_2"));
 		TreeItem node2_2_1 = new TreeItem (node2_2, SWT.NONE);
 		node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));

 		/* Create the image tree */
 		tree2 = new Tree (imageTreeGroup, style);
 		imageNode1 = new TreeItem (tree2, SWT.NONE);
 		imageNode1.setText (ControlExample.getResourceString("Node_1"));
 		imageNode1.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node2 = new TreeItem (tree2, SWT.NONE);
 		node2.setText (ControlExample.getResourceString("Node_2"));
 		node2.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node3 = new TreeItem (tree2, SWT.NONE);
 		node3.setText (ControlExample.getResourceString("Node_3"));
 		node3.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node4 = new TreeItem (tree2, SWT.NONE);
 		node4.setText (ControlExample.getResourceString("Node_4"));
 		node4.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node1_1 = new TreeItem (imageNode1, SWT.NONE);
 		node1_1.setText (ControlExample.getResourceString("Node_1_1"));
 		node1_1.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node2_1 = new TreeItem (node2, SWT.NONE);
 		node2_1.setText (ControlExample.getResourceString("Node_2_1"));
 		node2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node3_1 = new TreeItem (node3, SWT.NONE);
 		node3_1.setText (ControlExample.getResourceString("Node_3_1"));
 		node3_1.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node2_2 = new TreeItem(node2, SWT.NONE);
 		node2_2.setText (ControlExample.getResourceString("Node_2_2"));
 		node2_2.setImage (instance.images[ControlExample.ciClosedFolder]);
 		node2_2_1 = new TreeItem (node2_2, SWT.NONE);
 		node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));
 		node2_2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
 	}

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

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

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

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

 	/**
 	 * 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 ();
 		setExampleWidgetSize ();
 		if (oldFont != null) oldFont.dispose();
 	}

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

 	/**
 	 * Sets the background color of the Node 1 TreeItems.
 	 */
 	void setItemBackground () {
 		textNode1.setBackground (itemBackgroundColor);
 		imageNode1.setBackground (itemBackgroundColor);
 		/* Set the background button's color to match the color just set. */
 		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 () {
 		textNode1.setForeground (itemForegroundColor);
 		imageNode1.setForeground (itemForegroundColor);
 		/* Set the foreground button's color to match the color just set. */
 		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;
 		textNode1.setFont (itemFont);
 		imageNode1.setFont (itemFont);
 	}
 }
	/*******************************************************************************
	* 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.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;

	/* Controls and resources added to the "Colors" group */
	Button itemForegroundButton, itemBackgroundButton, itemFontButton;
	Color itemForegroundColor, itemBackgroundColor;
	Image itemForegroundImage, itemBackgroundImage;
	Font itemFont;

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

	/**
	* Creates the "Colors" group.
	*/
	void createColorGroup () {
	super.createColorGroup();

	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 ();
	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 ();
	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 ();
	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 "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 (GridData.GRAB_HORIZONTAL \| GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_FILL));
	treeGroup.setText ("Tree");

	/* Create a group for the image tree */
	imageTreeGroup = new Group (exampleGroup, SWT.NONE);
	imageTreeGroup.setLayout (new GridLayout ());
	imageTreeGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL \| GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_FILL));
	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 (borderButton.getSelection()) style \|= SWT.BORDER;

	/* Create the text tree */
	tree1 = new Tree (treeGroup, style);
	textNode1 = new TreeItem (tree1, SWT.NONE);
	textNode1.setText (ControlExample.getResourceString("Node_1"));
	TreeItem node2 = new TreeItem (tree1, SWT.NONE);
	node2.setText (ControlExample.getResourceString("Node_2"));
	TreeItem node3 = new TreeItem (tree1, SWT.NONE);
	node3.setText (ControlExample.getResourceString("Node_3"));
	TreeItem node4 = new TreeItem (tree1, SWT.NONE);
	node4.setText (ControlExample.getResourceString("Node_4"));
	TreeItem node1_1 = new TreeItem (textNode1, SWT.NONE);
	node1_1.setText (ControlExample.getResourceString("Node_1_1"));
	TreeItem node2_1 = new TreeItem (node2, SWT.NONE);
	node2_1.setText (ControlExample.getResourceString("Node_2_1"));
	TreeItem node3_1 = new TreeItem (node3, SWT.NONE);
	node3_1.setText (ControlExample.getResourceString("Node_3_1"));
	TreeItem node2_2 = new TreeItem (node2, SWT.NONE);
	node2_2.setText (ControlExample.getResourceString("Node_2_2"));
	TreeItem node2_2_1 = new TreeItem (node2_2, SWT.NONE);
	node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));

	/* Create the image tree */
	tree2 = new Tree (imageTreeGroup, style);
	imageNode1 = new TreeItem (tree2, SWT.NONE);
	imageNode1.setText (ControlExample.getResourceString("Node_1"));
	imageNode1.setImage (instance.images[ControlExample.ciClosedFolder]);
	node2 = new TreeItem (tree2, SWT.NONE);
	node2.setText (ControlExample.getResourceString("Node_2"));
	node2.setImage (instance.images[ControlExample.ciClosedFolder]);
	node3 = new TreeItem (tree2, SWT.NONE);
	node3.setText (ControlExample.getResourceString("Node_3"));
	node3.setImage (instance.images[ControlExample.ciClosedFolder]);
	node4 = new TreeItem (tree2, SWT.NONE);
	node4.setText (ControlExample.getResourceString("Node_4"));
	node4.setImage (instance.images[ControlExample.ciClosedFolder]);
	node1_1 = new TreeItem (imageNode1, SWT.NONE);
	node1_1.setText (ControlExample.getResourceString("Node_1_1"));
	node1_1.setImage (instance.images[ControlExample.ciClosedFolder]);
	node2_1 = new TreeItem (node2, SWT.NONE);
	node2_1.setText (ControlExample.getResourceString("Node_2_1"));
	node2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
	node3_1 = new TreeItem (node3, SWT.NONE);
	node3_1.setText (ControlExample.getResourceString("Node_3_1"));
	node3_1.setImage (instance.images[ControlExample.ciClosedFolder]);
	node2_2 = new TreeItem(node2, SWT.NONE);
	node2_2.setText (ControlExample.getResourceString("Node_2_2"));
	node2_2.setImage (instance.images[ControlExample.ciClosedFolder]);
	node2_2_1 = new TreeItem (node2_2, SWT.NONE);
	node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));
	node2_2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
	}

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

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

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

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

	/**
	* 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 ();
	setExampleWidgetSize ();
	if (oldFont != null) oldFont.dispose();
	}

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

	/**
	* Sets the background color of the Node 1 TreeItems.
	*/
	void setItemBackground () {
	textNode1.setBackground (itemBackgroundColor);
	imageNode1.setBackground (itemBackgroundColor);
	/* Set the background button's color to match the color just set. */
	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 () {
	textNode1.setForeground (itemForegroundColor);
	imageNode1.setForeground (itemForegroundColor);
	/* Set the foreground button's color to match the color just set. */
	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;
	textNode1.setFont (itemFont);
	imageNode1.setFont (itemFont);
	}
	}