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
{
	protected static final int WEIGHT_NORMAL = 400;
	protected static final int WEIGHT_BOLD = 700;
	private String text;
	private boolean isUnderline;
	private boolean isLinethrough;
	private boolean isOverline;
	private String fontFamily = "Times New Roman"; 
	private int fontSize = 9;
	private int fontWeight = WEIGHT_NORMAL;
	private boolean isBold;
	private boolean isItalic;
	private boolean updateOnTheFly;
	private boolean fontCreated;
	/**