Abstract: Described is a framework that enables a Delegating Visitor Pattern. In the Delegating Visitor Pattern, a visitor object (a) performs operations on a parent object; (b) selects which objects are child objects of the parent object; and (c) selects a child visitor object for each of the child objects. In one embodiment, the framework is one for developing user interfaces that enables a programmer to use Mirror Composition to construct user interfaces. Mirror Composition is an extension of the model-view-controller paradigm. In Mirror Composition, the UI is generated from a tree of view objects, where each view object is an object editor that provides for the modification and viewing of an underlying domain object. The tree of the view objects closely mirrors the tree of the domain objects.

Abstract: Described is a framework that enables a Delegating Visitor Pattern. In the Delegating Visitor Pattern, a visitor object (a) performs operations on a root object; (b) selects which objects are child objects of the root object; and (c) selects a child visitor object for each of the child objects. In one embodiment, the framework is one for developing user interfaces that enables a programmer to use Mirror Composition to construct user interfaces. Mirror Composition is an extension of the model-view-controller paradigm. In Mirror Composition, the UI is generated from a tree of view objects, where each view object is an object editor that provides for the modification and viewing of an underlying domain object. The tree of the view objects closely mirrors the tree of the domain objects.