jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/ui/dialogs/BlockPreferencePage.java - jsf/webtools.jsf - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 Sybase, Inc. 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:
  *     Sybase, Inc. - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jst.pagedesigner.ui.dialogs;

 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.wst.css.core.internal.util.declaration.CSSPropertyContext;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;

 /**
  * @author mengbo
  * @version 1.5
  */
 public class BlockPreferencePage extends PreferencePage {
 	private CSSPropertyContext _style;

 	private StyleCombo _wordSpacingNumberCombo, _wordSpacingUnitCombo,
 			_letterSpacingNumberCombo, _letterSpacingUnitCombo,
 			_verticalAlignNumberCombo, _verticalAlignUnitCombo,
 			_textAlignCombo, _textIndentUnitCombo, _whiteSpaceCombo,
 			_displayCombo;

 	private Text _textIndentText;

 	public BlockPreferencePage(IDOMElement element, CSSPropertyContext style) {
 		super();
 		_style = style;

 		setTitle(DialogsMessages.getString("BlockPreferencePage.Title")); //$NON-NLS-1$
 	}

 	/**
 	 * @see org.eclipse.jface.preference.
 	 *      PreferencePage#createContents(Composite)
 	 */
 	protected Control createContents(Composite parent) {
 		GridLayout layout;
 		GridData data;

 		Composite top = new Composite(parent, SWT.NONE);
 		layout = new GridLayout(3, false);
 		data = new GridData(GridData.FILL_BOTH);
 		top.setLayout(layout);
 		top.setLayoutData(data);

 		Label wordSpacingLabel = new Label(top, SWT.NONE);
 		wordSpacingLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.WordSpacing")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		wordSpacingLabel.setLayoutData(data);

 		_wordSpacingNumberCombo = new StyleCombo(top, SWT.NONE);
 		_wordSpacingNumberCombo.setItems(IStyleConstants.NORMAL);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_wordSpacingNumberCombo.setLayoutData(data);
 		_wordSpacingNumberCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				_wordSpacingUnitCombo.setEnabled(true);
 				try {
 					Integer.valueOf(_wordSpacingNumberCombo.getText());
 				} catch (NumberFormatException ex) {
 					_wordSpacingUnitCombo.setEnabled(false);
 				}

 				String spacing = _wordSpacingNumberCombo.getText();
 				if (_wordSpacingUnitCombo.isEnabled()) {
 					spacing += _wordSpacingUnitCombo.getText();
 				}

 				_style.setWordSpacing(spacing);
 			}
 		});

 		_wordSpacingUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
 		_wordSpacingUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_wordSpacingUnitCombo.setLayoutData(data);
 		_wordSpacingUnitCombo.select(0);
 		_wordSpacingUnitCombo.setEnabled(false);
 		_wordSpacingUnitCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String spacing = _wordSpacingNumberCombo.getText();
 				if (_wordSpacingUnitCombo.isEnabled()) {
 					spacing += _wordSpacingUnitCombo.getText();
 				}

 				_style.setWordSpacing(spacing);

 			}
 		});

 		Label letterSpacingLabel = new Label(top, SWT.NONE);
 		letterSpacingLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.LetterSpacing")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		letterSpacingLabel.setLayoutData(data);

 		_letterSpacingNumberCombo = new StyleCombo(top, SWT.NONE);
 		_letterSpacingNumberCombo.setItems(IStyleConstants.NORMAL);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_letterSpacingNumberCombo.setLayoutData(data);
 		_letterSpacingNumberCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				_letterSpacingUnitCombo.setEnabled(true);
 				try {
 					Integer.valueOf(_letterSpacingNumberCombo.getText());
 				} catch (NumberFormatException ex) {
 					_letterSpacingUnitCombo.setEnabled(false);
 				}

 				String spacing = _letterSpacingNumberCombo.getText();
 				if (_letterSpacingUnitCombo.isEnabled()) {
 					spacing += _letterSpacingUnitCombo.getText();
 				}

 				_style.setLetterSpacing(spacing);
 			}
 		});

 		_letterSpacingUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
 		_letterSpacingUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_letterSpacingUnitCombo.setLayoutData(data);
 		_letterSpacingUnitCombo.select(0);
 		_letterSpacingUnitCombo.setEnabled(false);
 		_letterSpacingUnitCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String spacing = _letterSpacingNumberCombo.getText();
 				if (_letterSpacingUnitCombo.isEnabled()) {
 					spacing += _letterSpacingUnitCombo.getText();
 				}

 				_style.setLetterSpacing(spacing);
 			}
 		});

 		Label verticalAlignLabel = new Label(top, SWT.NONE);
 		verticalAlignLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.VerticalAlign")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		verticalAlignLabel.setLayoutData(data);

 		_verticalAlignNumberCombo = new StyleCombo(top, SWT.NONE);
 		_verticalAlignNumberCombo.setItems(IStyleConstants.VERTICAL_ALIGN);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_verticalAlignNumberCombo.setLayoutData(data);
 		_verticalAlignNumberCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				_verticalAlignUnitCombo.setEnabled(true);
 				try {
 					Integer.valueOf(_verticalAlignNumberCombo.getText());
 				} catch (NumberFormatException ex) {
 					_verticalAlignUnitCombo.setEnabled(false);
 				}

 				String align = _verticalAlignNumberCombo.getText();
 				if (_verticalAlignUnitCombo.isEnabled()) {
 					align += _verticalAlignUnitCombo.getText();
 				}

 				_style.setVerticalAlign(align);
 			}
 		});

 		_verticalAlignUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
 		_verticalAlignUnitCombo.setItems(IStyleConstants.PERCENT);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_verticalAlignUnitCombo.setLayoutData(data);
 		_verticalAlignUnitCombo.select(0);
 		_verticalAlignUnitCombo.setEnabled(false);
 		_verticalAlignUnitCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String align = _verticalAlignNumberCombo.getText();
 				if (_verticalAlignUnitCombo.isEnabled()) {
 					align += _verticalAlignUnitCombo.getText();
 				}

 				_style.setVerticalAlign(align);
 			}
 		});

 		Label textAlignLabel = new Label(top, SWT.NONE);
 		textAlignLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.TextAlign")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		textAlignLabel.setLayoutData(data);

 		_textAlignCombo = new StyleCombo(top, SWT.NONE);
 		_textAlignCombo.setItems(IStyleConstants.TEXT_ALIGN);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_textAlignCombo.setLayoutData(data);
 		_textAlignCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String align = _textAlignCombo.getText();

 				_style.setTextAlign(align);
 			}
 		});

 		new Label(top, SWT.NONE);

 		Label textIndentLabel = new Label(top, SWT.NONE);
 		textIndentLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.TextIndent")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		textIndentLabel.setLayoutData(data);

 		_textIndentText = new Text(top, SWT.BORDER);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_textIndentText.setLayoutData(data);
 		_textIndentText.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				_textIndentUnitCombo.setEnabled(true);
 				try {
 					Integer.valueOf(_textIndentText.getText());
 				} catch (NumberFormatException ex) {
 					_textIndentUnitCombo.setEnabled(false);
 				}

 				String indent = _textIndentText.getText();
 				if (_textIndentUnitCombo.isEnabled()) {
 					indent += _textIndentUnitCombo.getText();
 				}

 				_style.setTextIndent(indent);
 			}
 		});

 		_textIndentUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
 		_textIndentUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_textIndentUnitCombo.setLayoutData(data);
 		_textIndentUnitCombo.select(0);
 		_textIndentUnitCombo.setEnabled(false);
 		_textIndentUnitCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String indent = _textIndentText.getText();
 				if (_textIndentUnitCombo.isEnabled()) {
 					indent += _textIndentUnitCombo.getText();
 				}

 				_style.setTextIndent(indent);
 			}
 		});

 		Label whiteSpaceLabel = new Label(top, SWT.NONE);
 		whiteSpaceLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.WhiteSpace")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		whiteSpaceLabel.setLayoutData(data);

 		_whiteSpaceCombo = new StyleCombo(top, SWT.NONE);
 		_whiteSpaceCombo.setItems(IStyleConstants.WHITE_SPACE);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_whiteSpaceCombo.setLayoutData(data);
 		_whiteSpaceCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String space = _whiteSpaceCombo.getText();

 				_style.setWhiteSpace(space);
 			}
 		});

 		new Label(top, SWT.NONE);

 		Label displayLabel = new Label(top, SWT.NONE);
 		displayLabel.setText(DialogsMessages
 				.getString("BlockPreferencePage.Display")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		displayLabel.setLayoutData(data);

 		_displayCombo = new StyleCombo(top, SWT.NONE);
 		_displayCombo.setItems(IStyleConstants.DISPLAY);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		_displayCombo.setLayoutData(data);
 		_displayCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String display = _displayCombo.getText();

 				_style.setDisplay(display);
 			}
 		});

 		initializeControls();

 		return top;
 	}

 	private void initializeControls() {
 		// word-spacing
 		String spacing = _style.getWordSpacing();
 		if (!isEmptyString(spacing)) {
 			int index = _wordSpacingNumberCombo.indexOf(spacing);
 			if (index != -1) {
 				_wordSpacingNumberCombo.select(index);
 			} else {
 				_wordSpacingNumberCombo.setText(spacing);
 			}
 		}

 		// letter-spacing
 		spacing = _style.getLetterSpacing();
 		if (!isEmptyString(spacing)) {
 			int index = _letterSpacingNumberCombo.indexOf(spacing);
 			if (index != -1) {
 				_letterSpacingNumberCombo.select(index);
 			} else {
 				_letterSpacingNumberCombo.setText(spacing);
 			}
 		}

 		// veritcal-align
 		String align = _style.getVerticalAlign();
 		if (!isEmptyString(align)) {
 			int index = _verticalAlignNumberCombo.indexOf(align);
 			if (index != -1) {
 				_verticalAlignNumberCombo.select(index);
 			} else {
 				_verticalAlignNumberCombo.setText(align);
 			}
 		}

 		// text-align
 		align = _style.getTextAlign();
 		if (!isEmptyString(align)) {
 			int index = _textAlignCombo.indexOf(align);
 			if (index != -1) {
 				_textAlignCombo.select(index);
 			} else {
 				_textAlignCombo.setText(align);
 			}
 		}

 		// text-indent
 		String indent = _style.getTextIndent();
 		if (!isEmptyString(indent)) {
 			_textIndentText.setText(indent);
 		}

 		// white-space
 		String space = _style.getWhiteSpace();
 		if (!isEmptyString(space)) {
 			int index = _whiteSpaceCombo.indexOf(space);
 			if (index != -1) {
 				_whiteSpaceCombo.select(index);
 			} else {
 				_whiteSpaceCombo.setText(space);
 			}
 		}

 		// display
 		String display = _style.getDisplay();
 		if (!isEmptyString(display)) {
 			int index = _displayCombo.indexOf(display);
 			if (index != -1) {
 				_displayCombo.select(index);
 			} else {
 				_displayCombo.setText(display);
 			}
 		}
 	}

 	public void setVisible(boolean visible) {
 		super.setVisible(visible);

 		getApplyButton().setVisible(false);
 		getDefaultsButton().setVisible(false);
 	}

     // TODO: seeing this method repeated in on other preference pages..
 	private boolean isEmptyString(String str) {
 		if (str == null || str.length() == 0) {
 			return true;
 		}
         return false;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006 Sybase, Inc. 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:
	* Sybase, Inc. - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jst.pagedesigner.ui.dialogs;

	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.wst.css.core.internal.util.declaration.CSSPropertyContext;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;

	/**
	* @author mengbo
	* @version 1.5
	*/
	public class BlockPreferencePage extends PreferencePage {
	private CSSPropertyContext _style;

	private StyleCombo _wordSpacingNumberCombo, _wordSpacingUnitCombo,
	_letterSpacingNumberCombo, _letterSpacingUnitCombo,
	_verticalAlignNumberCombo, _verticalAlignUnitCombo,
	_textAlignCombo, _textIndentUnitCombo, _whiteSpaceCombo,
	_displayCombo;

	private Text _textIndentText;

	public BlockPreferencePage(IDOMElement element, CSSPropertyContext style) {
	super();
	_style = style;

	setTitle(DialogsMessages.getString("BlockPreferencePage.Title")); //$NON-NLS-1$
	}

	/**
	* @see org.eclipse.jface.preference.
	* PreferencePage#createContents(Composite)
	*/
	protected Control createContents(Composite parent) {
	GridLayout layout;
	GridData data;

	Composite top = new Composite(parent, SWT.NONE);
	layout = new GridLayout(3, false);
	data = new GridData(GridData.FILL_BOTH);
	top.setLayout(layout);
	top.setLayoutData(data);

	Label wordSpacingLabel = new Label(top, SWT.NONE);
	wordSpacingLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.WordSpacing")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	wordSpacingLabel.setLayoutData(data);

	_wordSpacingNumberCombo = new StyleCombo(top, SWT.NONE);
	_wordSpacingNumberCombo.setItems(IStyleConstants.NORMAL);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_wordSpacingNumberCombo.setLayoutData(data);
	_wordSpacingNumberCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	_wordSpacingUnitCombo.setEnabled(true);
	try {
	Integer.valueOf(_wordSpacingNumberCombo.getText());
	} catch (NumberFormatException ex) {
	_wordSpacingUnitCombo.setEnabled(false);
	}

	String spacing = _wordSpacingNumberCombo.getText();
	if (_wordSpacingUnitCombo.isEnabled()) {
	spacing += _wordSpacingUnitCombo.getText();
	}

	_style.setWordSpacing(spacing);
	}
	});

	_wordSpacingUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
	_wordSpacingUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_wordSpacingUnitCombo.setLayoutData(data);
	_wordSpacingUnitCombo.select(0);
	_wordSpacingUnitCombo.setEnabled(false);
	_wordSpacingUnitCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String spacing = _wordSpacingNumberCombo.getText();
	if (_wordSpacingUnitCombo.isEnabled()) {
	spacing += _wordSpacingUnitCombo.getText();
	}

	_style.setWordSpacing(spacing);

	}
	});

	Label letterSpacingLabel = new Label(top, SWT.NONE);
	letterSpacingLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.LetterSpacing")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	letterSpacingLabel.setLayoutData(data);

	_letterSpacingNumberCombo = new StyleCombo(top, SWT.NONE);
	_letterSpacingNumberCombo.setItems(IStyleConstants.NORMAL);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_letterSpacingNumberCombo.setLayoutData(data);
	_letterSpacingNumberCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	_letterSpacingUnitCombo.setEnabled(true);
	try {
	Integer.valueOf(_letterSpacingNumberCombo.getText());
	} catch (NumberFormatException ex) {
	_letterSpacingUnitCombo.setEnabled(false);
	}

	String spacing = _letterSpacingNumberCombo.getText();
	if (_letterSpacingUnitCombo.isEnabled()) {
	spacing += _letterSpacingUnitCombo.getText();
	}

	_style.setLetterSpacing(spacing);
	}
	});

	_letterSpacingUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
	_letterSpacingUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_letterSpacingUnitCombo.setLayoutData(data);
	_letterSpacingUnitCombo.select(0);
	_letterSpacingUnitCombo.setEnabled(false);
	_letterSpacingUnitCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String spacing = _letterSpacingNumberCombo.getText();
	if (_letterSpacingUnitCombo.isEnabled()) {
	spacing += _letterSpacingUnitCombo.getText();
	}

	_style.setLetterSpacing(spacing);
	}
	});

	Label verticalAlignLabel = new Label(top, SWT.NONE);
	verticalAlignLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.VerticalAlign")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	verticalAlignLabel.setLayoutData(data);

	_verticalAlignNumberCombo = new StyleCombo(top, SWT.NONE);
	_verticalAlignNumberCombo.setItems(IStyleConstants.VERTICAL_ALIGN);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_verticalAlignNumberCombo.setLayoutData(data);
	_verticalAlignNumberCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	_verticalAlignUnitCombo.setEnabled(true);
	try {
	Integer.valueOf(_verticalAlignNumberCombo.getText());
	} catch (NumberFormatException ex) {
	_verticalAlignUnitCombo.setEnabled(false);
	}

	String align = _verticalAlignNumberCombo.getText();
	if (_verticalAlignUnitCombo.isEnabled()) {
	align += _verticalAlignUnitCombo.getText();
	}

	_style.setVerticalAlign(align);
	}
	});

	_verticalAlignUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
	_verticalAlignUnitCombo.setItems(IStyleConstants.PERCENT);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_verticalAlignUnitCombo.setLayoutData(data);
	_verticalAlignUnitCombo.select(0);
	_verticalAlignUnitCombo.setEnabled(false);
	_verticalAlignUnitCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String align = _verticalAlignNumberCombo.getText();
	if (_verticalAlignUnitCombo.isEnabled()) {
	align += _verticalAlignUnitCombo.getText();
	}

	_style.setVerticalAlign(align);
	}
	});

	Label textAlignLabel = new Label(top, SWT.NONE);
	textAlignLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.TextAlign")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	textAlignLabel.setLayoutData(data);

	_textAlignCombo = new StyleCombo(top, SWT.NONE);
	_textAlignCombo.setItems(IStyleConstants.TEXT_ALIGN);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_textAlignCombo.setLayoutData(data);
	_textAlignCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String align = _textAlignCombo.getText();

	_style.setTextAlign(align);
	}
	});

	new Label(top, SWT.NONE);

	Label textIndentLabel = new Label(top, SWT.NONE);
	textIndentLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.TextIndent")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	textIndentLabel.setLayoutData(data);

	_textIndentText = new Text(top, SWT.BORDER);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_textIndentText.setLayoutData(data);
	_textIndentText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	_textIndentUnitCombo.setEnabled(true);
	try {
	Integer.valueOf(_textIndentText.getText());
	} catch (NumberFormatException ex) {
	_textIndentUnitCombo.setEnabled(false);
	}

	String indent = _textIndentText.getText();
	if (_textIndentUnitCombo.isEnabled()) {
	indent += _textIndentUnitCombo.getText();
	}

	_style.setTextIndent(indent);
	}
	});

	_textIndentUnitCombo = new StyleCombo(top, SWT.READ_ONLY);
	_textIndentUnitCombo.setItems(IStyleConstants.SIZE_UNIT);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_textIndentUnitCombo.setLayoutData(data);
	_textIndentUnitCombo.select(0);
	_textIndentUnitCombo.setEnabled(false);
	_textIndentUnitCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String indent = _textIndentText.getText();
	if (_textIndentUnitCombo.isEnabled()) {
	indent += _textIndentUnitCombo.getText();
	}

	_style.setTextIndent(indent);
	}
	});

	Label whiteSpaceLabel = new Label(top, SWT.NONE);
	whiteSpaceLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.WhiteSpace")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	whiteSpaceLabel.setLayoutData(data);

	_whiteSpaceCombo = new StyleCombo(top, SWT.NONE);
	_whiteSpaceCombo.setItems(IStyleConstants.WHITE_SPACE);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_whiteSpaceCombo.setLayoutData(data);
	_whiteSpaceCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String space = _whiteSpaceCombo.getText();

	_style.setWhiteSpace(space);
	}
	});

	new Label(top, SWT.NONE);

	Label displayLabel = new Label(top, SWT.NONE);
	displayLabel.setText(DialogsMessages
	.getString("BlockPreferencePage.Display")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_END);
	displayLabel.setLayoutData(data);

	_displayCombo = new StyleCombo(top, SWT.NONE);
	_displayCombo.setItems(IStyleConstants.DISPLAY);
	data = new GridData(GridData.FILL_HORIZONTAL);
	_displayCombo.setLayoutData(data);
	_displayCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String display = _displayCombo.getText();

	_style.setDisplay(display);
	}
	});

	initializeControls();

	return top;
	}

	private void initializeControls() {
	// word-spacing
	String spacing = _style.getWordSpacing();
	if (!isEmptyString(spacing)) {
	int index = _wordSpacingNumberCombo.indexOf(spacing);
	if (index != -1) {
	_wordSpacingNumberCombo.select(index);
	} else {
	_wordSpacingNumberCombo.setText(spacing);
	}
	}

	// letter-spacing
	spacing = _style.getLetterSpacing();
	if (!isEmptyString(spacing)) {
	int index = _letterSpacingNumberCombo.indexOf(spacing);
	if (index != -1) {
	_letterSpacingNumberCombo.select(index);
	} else {
	_letterSpacingNumberCombo.setText(spacing);
	}
	}

	// veritcal-align
	String align = _style.getVerticalAlign();
	if (!isEmptyString(align)) {
	int index = _verticalAlignNumberCombo.indexOf(align);
	if (index != -1) {
	_verticalAlignNumberCombo.select(index);
	} else {
	_verticalAlignNumberCombo.setText(align);
	}
	}

	// text-align
	align = _style.getTextAlign();
	if (!isEmptyString(align)) {
	int index = _textAlignCombo.indexOf(align);
	if (index != -1) {
	_textAlignCombo.select(index);
	} else {
	_textAlignCombo.setText(align);
	}
	}

	// text-indent
	String indent = _style.getTextIndent();
	if (!isEmptyString(indent)) {
	_textIndentText.setText(indent);
	}

	// white-space
	String space = _style.getWhiteSpace();
	if (!isEmptyString(space)) {
	int index = _whiteSpaceCombo.indexOf(space);
	if (index != -1) {
	_whiteSpaceCombo.select(index);
	} else {
	_whiteSpaceCombo.setText(space);
	}
	}

	// display
	String display = _style.getDisplay();
	if (!isEmptyString(display)) {
	int index = _displayCombo.indexOf(display);
	if (index != -1) {
	_displayCombo.select(index);
	} else {
	_displayCombo.setText(display);
	}
	}
	}

	public void setVisible(boolean visible) {
	super.setVisible(visible);

	getApplyButton().setVisible(false);
	getDefaultsButton().setVisible(false);
	}

	// TODO: seeing this method repeated in on other preference pages..
	private boolean isEmptyString(String str) {
	if (str == null \|\| str.length() == 0) {
	return true;
	}
	return false;
	}
	}