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
updateView( );
		}
	}
	/**
	 * Sets if update the view whenever the font style has been changed.
	 * 
	 * @param onthefly
	 */
	public void setUpdateOnthefly( boolean onthefly )
	{
		this.updateOnTheFly = onthefly;
	}
	/**
	 * Sets the label text.
	 * 
	 * @param txt
	 *            text.
	 */
	public void setText( String txt )
	{
		this.text = txt;
	}
	/**
	 * Sets if the label has the underline style.
	 * 
	 * @param underline
	 */
	public void setUnderline( boolean underline )
	{
		this.isUnderline = underline;