All ui_act procs should call parent by default. All procs should preserve the value of the parent proc when it's TRUTHY and pass it down the call stack. No UI should be interactible when its flags or state indicate it should not be, except when explicity overriden by child procs intentionally disregarding parent return values to achieve a specific goal.
Loosely adapted from /vg/. This is an entity component system for adding behaviours to datums when inheritance doesn't quite cut it. By using signals and events instead of direct inheritance, you can inject behaviours without hacky overloads. It requires a different method of thinking, but is not hard to use correctly. If a behaviour can have application across more than one thing. Make it generic, make it a component. Atom/mob/obj event? Give it a signal, and forward it's arguments with a SendSignal() call. Now every component that want's to can also know about this happening.
See this thread for an introduction to the system as a whole.
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