Bug 165624 Provides UI supports for Highlight rule refer to Style element
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HighlightRuleBuilder.java
btn.setLayoutData( gdata );
		return btn;
	}
	private void updatePreview( )
	{
		String familyValue = getFontFamily( );
		int sizeValue = getFontSize( );
		previewLabel.setFontFamily( familyValue );
		previewLabel.setFontSize( sizeValue );
		previewLabel.setBold( bold.getSelection( ) );
		previewLabel.setItalic( italic.getSelection( ) );
		previewLabel.setForeground( ColorManager.getColor( color.getRGB( ) ) );
		previewLabel.setBackground( ColorManager.getColor( backColor.getRGB( ) ) );
		previewLabel.setUnderline( underline.getSelection( ) );
		previewLabel.setLinethrough( linethrough.getSelection( ) );
		previewLabel.updateView( );
	}
	/**
	 * For newly create highlight rule, transfer the handle as <b>null </b>, or
	 * transfer the handle as current highlight rule handle to be modified.
	 * 
	 * @param handle
	 * @param handleCount
	 *            current highlight rule items count.
	 */
	public void updateHandle( HighlightRuleHandle handle, int handleCount )
	{
		this.handle = handle;
		this.handleCount = handleCount;
	}