UNIT_AURA says nothing about what changed and stays silent when a buff
is refreshed or its duration packet lands, so a recast HoT kept its old
timer until something else rebuilt the row. UNIT_AURA_DELTA reports
added, updated and removed aura instances, refreshes included.
Unit frames register it on their own token. An add, a removal or a full
update rebuilds the auras as before; an update-only delta re-reads the
slot behind each shown icon for its stacks and timer and redraws the
buff indicators, without a relayout or a dispel scan. Frames that
follow a GUID (the target-of-X chain) stay on UNIT_AURA, since the
delta only fires for tokens. A finished aura layout announces itself
as "unitframe:auras".
buffwatch drops its 0.4s rescan: bars rebuild on the delta, on login
and on a target change, and a timer wakes the frame when the next aura
crosses the bar threshold. Bars re-anchor when the player or target
frame lays out its aura rows, and a whitelist or blacklist click
applies at once.
Nameplates, the loss of control alert and the equipment manager's
mount/stealth/dining check listen to the delta as well.
The 0.1s rescan only caught timers that change without a loss of control
event: a refreshed debuff fires UNIT_AURA, and a second kick on a locked
school fires SPELL_UPDATE_COOLDOWN, after ClassicAPI has read the lockout
from the packet. The alert listens to both while it shows. pfUI's
cooldown text prints the time left on the icon, so the alert's own
countdown and LOSS_OF_CONTROL_SECONDS go.
A movable alert in the middle of the screen for the strongest active
effect from C_LossOfControl: icon, cooldown sweep, the effect's name and
the seconds left. A school lockout reads "<School> Locked". It opens on
LOSS_OF_CONTROL_ADDED / _UPDATE and rescans every 0.1s while shown,
because a refreshed debuff or a second kick changes the timer without an
event.
The labels are Classic Era's LOSS_OF_CONTROL_DISPLAY_* GlobalStrings,
added to each locale file. The README lists the alert and the dressing
room controls.
Brues