Nameplate Overhaul (#38)

* ElvUI/NamePlates: initial nameplate conversions

* More nameplate work

* Modules/Cooldowns: various CD fixes, nameplates cant show 'swipe' texture

* ElvUI/NamePlates: final nameplate polish

* Modules/Misc: add space before interrupted announcement

ElvUI/Modules/Nameplates/Plugins/ClassificationIndicator.lua

@@ -0,0 +1,60 @@
+local E, L, V, P, G = unpack(ElvUI)
+local oUF = E.oUF
+
+local function Update(self)
+	local element = self.ClassificationIndicator
+
+	if element.PreUpdate then
+		element:PreUpdate()
+	end
+
+	local classification = self.classification
+	if classification == 'elite' or classification == 'worldboss' then
+		element:SetAtlas('nameplates-icon-elite-gold')
+		element:Show()
+	elseif classification == 'rareelite' or classification == 'rare' then
+		element:SetAtlas('nameplates-icon-elite-silver')
+		element:Show()
+	else
+		element:Hide()
+	end
+
+	if element.PostUpdate then
+		return element:PostUpdate(classification)
+	end
+end
+
+local function Path(self, ...)
+	return (self.ClassificationIndicator.Override or Update) (self, ...)
+end
+
+local function ForceUpdate(element)
+	return Path(element.__owner, 'ForceUpdate', element.__owner.unit)
+end
+
+local function Enable(self)
+	local element = self.ClassificationIndicator
+	if element then
+		element.__owner = self
+		element.ForceUpdate = ForceUpdate
+
+		if element:IsObjectType('Texture') and not element:GetTexture() then
+			element:SetTexture([[Interface\TARGETINGFRAME\Nameplates]])
+		end
+
+		self:RegisterEvent('UNIT_CLASSIFICATION_CHANGED', Path)
+
+		return true
+	end
+end
+
+local function Disable(self)
+	local element = self.ClassificationIndicator
+	if element then
+		element:Hide()
+
+		self:UnregisterEvent('UNIT_CLASSIFICATION_CHANGED', Path)
+	end
+end
+
+oUF:AddElement('ClassificationIndicator', Path, Enable, Disable)