Usually UI component libraries are designed in a way that similar control classes vary across context.
For example, if you want to use a regular button on a form, you need to use the Button class, but for a button
on a toolbar, you would have to use some other class (for example, ToolbarButton). That approach restricts you in terms of
polymorphism and is not conceptually elegant.
Elegant Ribbon introduces a context-based architecture, where
logic and appearance of a control depends on its context in a way that when the
parent window changes, the control's look and behavior change too. This
means that when using our framework, for example, you can always drag a combo box from
the Ribbon to a form and back because in both cases the combo box is
represented by the very same class (see figure below).
Context-sensitive combo box