enthought/enaml — pull request #118 by sccolbert (2012-03-23 16:24:38+00:00)
Title: Layout helpers

This updates the layout helpers to support CSS-like box models with padding and margins. It also adds a .when() method to the appropriate components and layout helpers allowing toggling of constraints based on a switch. The contraints are no longer filtered based on visibility; that must be explicitly managed via .when(...) calls and the << operator.