Fix threat updating on focus/focustarget units.

Omen.lua

@@ -41,8 +41,6 @@ LSM:Register("sound", "Short Circuit", [[Sound\Spells\SimonGame_Visual_BadPress.
 LSM:Register("sound", "Fel Portal", [[Sound\Spells\Sunwell_Fel_PortalStand.wav]])
 LSM:Register("sound", "Fel Nova", [[Sound\Spells\SeepingGaseous_Fel_Nova.wav]])
 LSM:Register("sound", "You Will Die!", [[Sound\Creature\CThun\CThunYouWillDIe.wav]])
-LSM:Register("background", "Blizzard Parchment", [[Interface\AchievementFrame\UI-Achievement-Parchment-Horizontal]])
-LSM:Register("background", "Blizzard Parchment 2", [[Interface\AchievementFrame\UI-Achievement-Parchment]])
 
 
 -----------------------------------------------------------------------------
@@ -517,6 +515,9 @@ function Omen:OnEnable()
 		self:RegisterEvent("PLAYER_REGEN_DISABLED", "UpdateVisible")
 		self:RegisterEvent("PLAYER_REGEN_ENABLED", "UpdateVisible")
 	end
+	if db.UseFocus then
+		self:RegisterEvent("UNIT_TARGET")
+	end
 
 	self:PARTY_MEMBERS_CHANGED()
 	self:PLAYER_TARGET_CHANGED()
@@ -986,9 +987,8 @@ end
 -- Fired when a mob has its threat list updated. The mob that
 -- had its list updated is the first parameter of the event.
 function Omen:UNIT_THREAT_LIST_UPDATE(event, unitID)
-	if unitID == "target" then
-		self:UpdateBars()
-	end
+	-- It appears that unitID can only be "target" or "focus"
+	self:UpdateBars()
 end
 
 -- Fired when a unit's threat situation changes. The unit that
@@ -1008,6 +1008,12 @@ function Omen:PLAYER_TARGET_CHANGED()
 	self:UpdateBars()
 end
 
+function Omen:UNIT_TARGET(event, unitID)
+	if unitID == "focus" and db.UseFocus and self.unitID == "focustarget" then
+		self:UpdateBars()
+	end
+end
+
 local lastPartyUpdateTime = GetTime()
 
 function Omen:PARTY_MEMBERS_CHANGED()
@@ -1146,11 +1152,13 @@ function Omen:FindThreatMob()
 			if not name then name = name2 end
 			if not UnitIsPlayer(mob) and not UnitPlayerControlled(mob) and UnitCanAttack("player", mob) and UnitHealth(mob) > 0 then
 				self.TitleText:SetText(name2)
+				self.unitID = mob
 				return mob
 			end
 		end
 	end
 	self.TitleText:SetText(name)
+	self.unitID = nil
 end
 
 function Omen:UpdateBars()
@@ -1218,6 +1226,8 @@ function Omen:UpdateBars()
 			updatethreat("target", mob)
 			updatethreat("pettarget", mob)
 		end
+		updatethreat("target", mob)
+		updatethreat("targettarget", mob)
 		updatethreat("focus", mob)
 		updatethreat("focustarget", mob)
 		updatethreat(mobTarget, mob)
@@ -1439,6 +1449,11 @@ do
 			info.text = "Use Focus Target"
 			info.func = function()
 				db.UseFocus = not db.UseFocus
+				if db.UseFocus then
+					Omen:RegisterEvent("UNIT_TARGET")
+				else
+					Omen:UnregisterEvent("UNIT_TARGET")
+				end
 				Omen:UpdateBars()
 			end
 			info.checked = db.UseFocus