Detect the dispel talents instead of asking for them

The three talents that grant an extra dispel type were gated behind
manual checkboxes because the talent state looked unreadable on this
server. It isn't: C_CharacterAdvancement.GetTalentRankByID reports a
live rank for the player, entry IDs are shared across every class tree
so querying a foreign one just reports rank 0, and
CHARACTER_ADVANCEMENT_UPDATE_ENTRIES_RESULT fires when a build is
confirmed.

Key the talents to their entry IDs and read them instead. The lookup is
cached, since PostUpdate_DebuffHighlight runs once per aura per frame,
and refreshed on build confirmation plus the existing delayed refresh
after login. Every call is guarded, so a missing API reads as "talent
not taken" and behaves as it did before.

The three checkboxes are gone, replaced by a single Detect Talents
switch that turns the whole lookup off.

Modules/DispelHighlight.lua

@@ -17,15 +17,40 @@ local CLASS_DISPEL_TYPES = {
 	PYROMANCER = {},
 }
 
--- Extra dispel types unlocked by a talent choice. There's no reliable way to
+-- Extra dispel types unlocked by a talent choice, keyed to the Character
--- auto-detect the talent on this server, so these are gated by a manual
+-- Advancement entry that grants them. The IDs are stable and shared across
--- checkbox in the options panel instead.
+-- every class tree, so querying one from a class that can't take it simply
+-- reports rank 0 rather than erroring.
 local TALENT_DISPEL_TYPES = {
-	PROPHET = {flag = "hasBlightAntidote", types = {Curse = true}},
+	PROPHET = {talentID = 6324, types = {Curse = true}}, -- Blight Antidote
-	CULTIST = {flag = "hasDevourCurse", types = {Curse = true}},
+	CULTIST = {talentID = 12982, types = {Curse = true}}, -- Devour Curse
-	PYROMANCER = {flag = "hasBurnImpurities", types = {Magic = true, Disease = true, Bleed = true}},
+	PYROMANCER = {talentID = 31276, types = {Magic = true, Disease = true, Bleed = true}}, -- Burn Impurities
 }
 
+-- Cached result of the talent lookup for the player's current build.
+-- PostUpdate_DebuffHighlight runs once per aura per frame, so the query is
+-- hoisted out of that path and refreshed only when the build can change.
+local hasTalentDispel = false
+
+-- C_CharacterAdvancement is a server addition with no API documentation, so
+-- every entry point is guarded and a failed call reads as "talent not taken",
+-- which degrades to the same behaviour as before auto-detection existed.
+local function HasTalent(talentID)
+	local api = C_CharacterAdvancement
+	if not (api and type(api.GetTalentRankByID) == "function") then return false end
+
+	local ok, rank = pcall(api.GetTalentRankByID, talentID)
+
+	return ok and type(rank) == "number" and rank > 0
+end
+
+local function RefreshTalentState()
+	local _, class = UnitClass("player")
+	local talent = TALENT_DISPEL_TYPES[class]
+
+	hasTalentDispel = (talent and HasTalent(talent.talentID)) or false
+end
+
 function CoA:CanDispel(debuffType)
 	local _, class = UnitClass("player")
 	local baseTypes = CLASS_DISPEL_TYPES[class]
@@ -34,7 +59,9 @@ function CoA:CanDispel(debuffType)
 	if baseTypes and baseTypes[debuffType] then return true end
 
 	local talent = TALENT_DISPEL_TYPES[class]
-	if talent and CoA.db.profile[talent.flag] and talent.types[debuffType] then return true end
+	if talent and hasTalentDispel and CoA.db.profile.dispelHighlightDetectTalents and talent.types[debuffType] then
+		return true
+	end
 
 	return false
 end
@@ -69,18 +96,30 @@ hooksecurefunc(UF, "Configure_DebuffHighlight", function(_, frame)
 end)
 
 function CoA:UpdateDispelHighlight()
+	RefreshTalentState()
 	UF:Update_AllFrames()
 end
 
 -- On Ascension, UnitClass("player")'s second return only reliably reports the
 -- real custom class (CULTIST, PYROMANCER, ...) a short while after login --
 -- immediately at ADDON_LOADED/PLAYER_LOGIN it can still read back the generic
--- "HERO" base class. If a debuff highlight gets evaluated before that data
+-- "HERO" base class, and the advancement data lags in the same way. If a
--- syncs, CoA:CanDispel wrongly returns false and the highlight stays wrongly
+-- debuff highlight gets evaluated before that data syncs, CoA:CanDispel
--- suppressed until the next aura change. Force one extra refresh shortly
+-- wrongly returns false and the highlight stays wrongly suppressed until the
--- after entering the world so the very first debuff isn't judged too early.
+-- next aura change. Force one extra refresh shortly after entering the world
+-- so the very first debuff isn't judged too early.
+--
+-- CHARACTER_ADVANCEMENT_UPDATE_ENTRIES_RESULT fires when a build is confirmed,
+-- which is the point the talent ranks actually change. The advancement UI also
+-- fires CHARACTER_ADVANCEMENT_PENDING_BUILD_UPDATED while talents are being
+-- clicked around, but ranks don't move until the build is saved, so listening
+-- to it would only cost refreshes that read back the unchanged state.
 function CoA:InitializeDispelHighlight()
 	CoA:RegisterEvent("PLAYER_ENTERING_WORLD", function()
 		CoA:ScheduleTimer("UpdateDispelHighlight", 2)
 	end)
+
+	CoA:RegisterEvent("CHARACTER_ADVANCEMENT_UPDATE_ENTRIES_RESULT", function()
+		CoA:UpdateDispelHighlight()
+	end)
 end

README.md

@@ -8,7 +8,7 @@ ElvUI plugin that hides and skins the custom CoA (3.3.5) frames not covered by s
 - Class resource frames: hiding
 - Extra action button frame: skin, anchor, size
 - Instance swap frame: skin, anchor, font settings
-- Only highlight unitframes if dispellable by your CoA class, with manual talent switch.
+- Only highlight unitframes if dispellable by your CoA class.
 
 ## Installation
 

core.lua

@@ -32,9 +32,7 @@ local defaults = {
 		instanceButtonFontSize = 12,
 		instanceButtonFontOutline = "OUTLINE",
 		dispelHighlightOnlyMine = false,
-		hasBlightAntidote = false,
+		dispelHighlightDetectTalents = true,
-		hasDevourCurse = false,
-		hasBurnImpurities = false,
 		hideResourceSegmentBar = false,
 		hideResourceOrb = false,
 		hideResourceBar = false,
@@ -405,55 +403,20 @@ local function getOptions()
 							end
 						end,
 					},
-					talents = {
+					detectTalents = {
 						order = 3,
-						type = "group",
+						type = "toggle",
-						inline = true,
+						name = "Detect Talents",
-						name = "Talents",
+						desc = "Read the talents that grant extra dispel types from your current build. Turn this off to fall back to what your class can dispel without any talent.",
-						args = {
+						disabled = function() return not CoA.db.profile.dispelHighlightOnlyMine end,
-							hasBlightAntidote = {
+						get = function() return CoA.db.profile.dispelHighlightDetectTalents end,
-								order = 1,
+						set = function(_, value)
-								type = "toggle",
+							CoA.db.profile.dispelHighlightDetectTalents = value
-								name = string.format("Blight Antidote (%s)", LOCALIZED_CLASS_NAMES_MALE.PROPHET),
-								desc = "Grants Curse dispel.",
-								get = function() return CoA.db.profile.hasBlightAntidote end,
-								set = function(_, value)
-									CoA.db.profile.hasBlightAntidote = value
 
-									if CoA.UpdateDispelHighlight then
+							if CoA.UpdateDispelHighlight then
-										CoA:UpdateDispelHighlight()
+								CoA:UpdateDispelHighlight()
-									end
+							end
-								end,
+						end,
-							},
-							hasDevourCurse = {
-								order = 2,
-								type = "toggle",
-								name = string.format("Devour Curse (%s)", LOCALIZED_CLASS_NAMES_MALE.CULTIST),
-								desc = "Grants Curse dispel.",
-								get = function() return CoA.db.profile.hasDevourCurse end,
-								set = function(_, value)
-									CoA.db.profile.hasDevourCurse = value
-
-									if CoA.UpdateDispelHighlight then
-										CoA:UpdateDispelHighlight()
-									end
-								end,
-							},
-							hasBurnImpurities = {
-								order = 3,
-								type = "toggle",
-								name = string.format("Burn Impurities (%s)", LOCALIZED_CLASS_NAMES_MALE.PYROMANCER),
-								desc = "Grants Magic, Disease, and Bleed dispel.",
-								get = function() return CoA.db.profile.hasBurnImpurities end,
-								set = function(_, value)
-									CoA.db.profile.hasBurnImpurities = value
-
-									if CoA.UpdateDispelHighlight then
-										CoA:UpdateDispelHighlight()
-									end
-								end,
-							},
-						},
 					},
 				},
 			},