Hook OnClick/OnEnter/OnLeave instead of wrapping saved handlers; drop dead TBC bank-slot OnUpdate

api/ui-widgets.lua

@@ -592,9 +592,7 @@ function pfUI.api.SkinDropDown(frame, cr, cg, cb, useSmall)
     CloseDropDownMenus()
   end
 
-  local funcc = button:GetScript("OnClick")
-  button:SetScript("OnClick", function()
-    if funcc then funcc() end
+  button:HookScript("OnClick", function()
     local DropDownListWidth = DropDownList1:GetWidth()
     local DropDownFrameWidth = frame.backdrop:GetWidth()
     if DropDownListWidth < DropDownFrameWidth then

modules/bags.lua

@@ -585,31 +585,16 @@ pfUI:RegisterModule("bags", function ()
           frame.bagslots.slots[slot].slot = slot
         end
 
-        local SlotEnter = frame.bagslots.slots[slot].frame:GetScript("OnEnter")
-        frame.bagslots.slots[slot].frame:SetScript("OnEnter", function()
+        frame.bagslots.slots[slot].frame:HookScript("OnEnter", function()
           for slot, f in ipairs(pfUI.bags[this.slot + 1].slots) do
             CreateBackdrop(f.frame, default_border)
             f.frame.backdrop:SetBackdropBorderColor(.2,1,.8,1)
           end
-          SlotEnter(this)
         end)
 
-        local SlotLeave = frame.bagslots.slots[slot].frame:GetScript("OnLeave")
-        frame.bagslots.slots[slot].frame:SetScript("OnLeave", function()
+        frame.bagslots.slots[slot].frame:HookScript("OnLeave", function()
           pfUI.bag:UpdateBag(this.slot + 1)
-          SlotLeave()
         end)
-
-        -- On TBC, the OnEvent function of the template scans for framenames,
-        -- and obviously doesn't know the pf-Names. Therefore, triggering
-        -- the update function on each frame manually
-        if frame == pfUI.bag.left and BankFrameItemButton_Update then
-          local SlotUpdate = frame.bagslots.slots[slot].frame:GetScript("OnUpdate")
-          frame.bagslots.slots[slot].frame:SetScript("OnUpdate", function()
-            if SlotUpdate then SlotUpdate(this) end
-            BankFrameItemButton_Update(this)
-          end)
-        end
       end
 
       local left = (slot-min)*(frame.button_size/5*4+default_border*2) + default_border