Bug 144590 [Accessibility] BIRT custom controls should support active accessibility
Description: BIRT custom controls should support active accessibility. There are some custom controls in BIRT GUI. In Eclipse, when implementing a custom control you should also implement some or all of (as they apply to your control) org.eclipse.swt.accessibility.AccessibleListener, org.eclipse.swt.accessibility.AccessibleControlListener and org.eclipse.swt.accessibility.AccessibleTextListener. Also, the custom control can notify Active Accessibility of changes within the control using org.eclipse.swt.accessibility.Accessible methods such as setFocus(), selectionChanged(), textCaretMoved(), textChanged() and textSelectionChanged().
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/PreviewLabel.java
}
	/**
	 * Sets if the label has the line-through style.
	 * 
	 * @param linethrough
	 */
	public void setLinethrough( boolean linethrough )
	{
		this.isLinethrough = linethrough;
	}
	/**
	 * Sets if the label has the over-line style.
	 * 
	 * @param overline
	 */
	public void setOverline( boolean overline )
	{
		this.isOverline = overline;
	}
	/**
	 * Sets the font family.
	 * 
	 * @param fontFamily
	 *            family name.
	 */
	public void setFontFamily( String fontFamily )
	{
		this.fontFamily = fontFamily;
		if ( updateOnTheFly )
		{