improvement: hold on to unnamed UI elements #1359
Closed
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Changes the semantics of the UIRegistry to hold on to unnamed UI elements.
This makes function call requests work on unnamed UI elements.
The registry now keeps track of all the UI elements registered to a cell, and exposes a method to unregister them. The runtime unregisters all UI elements for a cell when cell state is invalidated.
STATUS: DRAFT.
[ ] Think through second-order effects.
[ ] Might need to change destructor logic for UI elements.
[ ] Update existing tests, rewrite new ones.