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Allow subtypes to specify "mutations", to control the behavior of the "Change Subtype" action

Authored by epriestley on Sep 12 2019, 11:12 PM.



Fixes T13415. Provide a way for subtypes to customize the behavior of "Change Subtype" actions that appear above comment areas.

Subtypes may disable this action by specifying "mutations": [], or provide a list of subtypes.

The bulk editor and API can still perform any change.

Test Plan
  • Tried to define an invalid "mutations" list with a bad subtype, got a sensible error.
  • Specified a limited mutations list and an empty mutations list, verified that corresponding tasks got corresponding actions.
  • Used the bulk editor to perform a freeform mutation.
  • Verified that tasks of a subtype with no "mutations" still work the same way they used to (allow mutation into any subtype).

Diff Detail

rP Phabricator
Automatic diff as part of commit; lint not applicable.
Automatic diff as part of commit; unit tests not applicable.