/** * Constructs a new instance of this class given its parent and a style value describing its * behavior and appearance. * * <p>The style value is either one of the style constants defined in class <code>SWT</code> which * is applicable to instances of this class, or must be built by <em>bitwise OR</em>'ing together * (that is, using the <code>int</code> "|" operator) two or more of those <code>SWT</code> style * constants. The class description lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. * * @param parent a composite control which will be the parent of the new instance (cannot be null) * @param style the style of control to construct * @exception IllegalArgumentException * <ul> * <li>ERROR_NULL_ARGUMENT - if the parent is null * </ul> * * @exception SWTException * <ul> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass * </ul> * * @see Widget#checkSubclass * @see Widget#getStyle */ public ExpandItem(ExpandBar parent, int style) { super(parent, style); this.parent = parent; createWidget(parent.getItemCount()); }