easteregg: make xmas less intrusive

modules/easteregg.lua

@@ -2,10 +2,29 @@ pfUI:RegisterModule("easteregg", function ()
   if date("%m%d") == "1224" or date("%m%d") == "1225" then
     -- merry x-mas!
     local title = (UnitFactionGroup("player") == "Horde") and PVP_RANK_18_0 or PVP_RANK_18_1
+    local oldflag = _G.CHAT_FLAG_AFK
 
-    _G.CHAT_FLAG_AFK        = title .. " "
+    local pvpking = CreateFrame("Frame", "pfPvPKing", UIParent)
-    _G.MARKED_AFK           = "|cff33ffccpf|cffffffffUI|r wishes you a merry christmas, |cff33ffcc" .. title .. "|r."
+    pvpking:Hide()
-    _G.MARKED_AFK_MESSAGE   = "|cff33ffccpf|cffffffffUI|r wishes you a merry christmas, |cff33ffcc" .. title .. "|r: %s"
+
+    pvpking:RegisterEvent("CHAT_MSG_SYSTEM")
+    pvpking:SetScript("OnEvent", function()
+      if strfind(arg1, _G.MARKED_AFK) or strfind(arg1, _G.MARKED_AFK_MESSAGE) then
+        _G.CHAT_FLAG_AFK = title .. " "
+        this.time = GetTime()
+        this:Show()
+      end
+    end)
+
+    pvpking:SetScript("OnUpdate", function()
+      if this.time + 1 < GetTime() then
+        _G.CHAT_FLAG_AFK = oldflag
+        this:Hide()
+      end
+    end)
+
+    _G.MARKED_AFK           = "|cff33ffccShagu|cffffffff wishes you a merry christmas. You are now |cff33ffcc" .. title .. "|cffffffff. Thanks for using |cff33ffccpf|cffffffffUI|cffffffff!|r"
+    _G.MARKED_AFK_MESSAGE   = "|cff33ffccShagu|cffffffff wishes you a merry christmas. You are now |cff33ffcc" .. title .. "|cffffffff. Thanks for using |cff33ffccpf|cffffffffUI|cffffffff!|r: %s"
     _G.CLEARED_AFK          = "You are no longer |cff33ffcc" .. title .. "|r."
   end
 end)