KG Panel Script - Changing on Spec

[Aryae21]

Not even sure if this is possible, but is there a way to change a texture based on a player/targets spec?
Basically I was planning on making a texture for my Unit frames (Player,target,focus target,target of target and such. NOT raid frames.) That change on the players class. Was planning on using the class icons. Then I thought how awesome it'd be to show a spec specific icon instead of just class. Is that possible, and if not then how about changing on class only?

[ravagernl]

For a player spec icon that is easy:

Panel OnLoad script:

self:RegisterEvent("ACTIVE_TALENT_GROUP_CHANGED")
self:RegisterEvent("PLAYER_LOGIN")
 
-- to strip the ugly border
self.bg:SetTexCoord(.08, .92, .08, .92)

Panel OnEvent script:

local specId = GetSpecialization()
if not specId then return end
local _, _, _, icon, background =GetSpecializationInfo(specId)
-- you can also use background if you wish
self.bg:SetTexture(icon)

As for target/focus spec icons, this becomes somewhat harder as you have to wait for the inspection queue so you can use it to query the talents of your target or focus.

[Aryae21]

Hmm figured as much. What about for classes then? Would that be easier for target/focus then specs?

[ravagernl]

Yes, it would.
Player Onload:

local _, class = UnitClass("player")
local t = CLASS_ICON_TCOORDS[class]
self.bg:SetTexture([[Interface\TargetingFrame\UI-Classes-Circles]])
self.bg:SetTexCoord(unpack(t))

Target Onload:

self.coords = CLASS_ICON_TCOORDS
self:RegisterEvent("PLAYER_TARGET_CHANGED")

Target OnEvent:

if not UnitExists("target") or not UnitIsPlayer("target") then
    self:Hide()
    return
end
local _, class = UnitClass("target")
local t = self.coords[class]
if t then
    self.bg:SetTexture([[Interface\TargetingFrame\UI-Classes-Circles]])
    self.bg:SetTexCoord(unpack(t))
    self:Show()
else
    self:Hide()
end

For focus, just change PLAYER_TARGET_CHANGED to PLAYER_FOCUS_CHANGED.
This is untested, but something along the lines of that should work.