prevent camera from constantly resetting

The unlock preview drives the bar via alpha: the OnUpdate forces alpha=1
while the drag handle is shown. On lock, with no active cast (endTime nil)
and no fadeout, the idle branch returned early and left the empty bar
stuck at alpha 1. Reset leftover alpha to 0 in that branch so the preview
clears once the drag handle hides. Fixes #16.

modules/afkcam.lua

@@ -1,5 +1,4 @@
 pfUI:RegisterModule("afkcam", function ()
-  local MARKED_AFK_CAPTURE = SanitizePattern(MARKED_AFK_MESSAGE)
   local social_chats = {
     "CHAT_MSG_SAY",
     "CHAT_MSG_WHISPER",
@@ -165,10 +164,10 @@ pfUI:RegisterModule("afkcam", function ()
   end)
 
   afkcam:SetScript("OnEvent", function()
-    if event == "CHAT_MSG_SYSTEM" then
-      if (arg1 == _G.MARKED_AFK) or strfind(arg1, MARKED_AFK_CAPTURE) then
+    if event == "PLAYER_FLAGS_CHANGED" then
+      if UnitIsAFK('player') then
         delay:Show()
-      elseif (arg1 == _G.CLEARED_AFK) then
+      elseif delay:IsVisible() then
         delay:Hide()
         this:stop()
       end
@@ -180,7 +179,7 @@ pfUI:RegisterModule("afkcam", function ()
     end
   end)
 
-  afkcam:RegisterEvent("CHAT_MSG_SYSTEM")
+  afkcam:RegisterEvent("PLAYER_FLAGS_CHANGED")
   afkcam:RegisterEvent("PLAYER_REGEN_DISABLED")
   afkcam:RegisterEvent("PLAYER_LEAVING_WORLD") -- reseting cvars on PLAYER_LOGOUT crashes the client ¯\_(ツ)_/¯
 end)

modules/castbar.lua

@@ -241,7 +241,10 @@ pfUI:RegisterModule("castbar", function ()
         return
       end
 
-      if not this.endTime then return end
+      if not this.endTime then
+        if this:GetAlpha() ~= 0 then this:SetAlpha(0) end
+        return
+      end
 
       -- Non-player bars: if the unit disappears (target died / detarget),
       -- drop the bar immediately.

modules/easteregg.lua

@@ -8,9 +8,9 @@ pfUI:RegisterModule("easteregg", function ()
     local pvpking = CreateFrame("Frame", "pfPvPKing", UIParent)
     pvpking:Hide()
 
-    pvpking:RegisterEvent("CHAT_MSG_SYSTEM")
+    pvpking:RegisterEvent("PLAYER_FLAGS_CHANGED")
     pvpking:SetScript("OnEvent", function()
-      if strfind(arg1, "You are now", 1) and strfind(arg1, "(AFK)", 1) then
+      if UnitIsAFK('player') then
         _G.CHAT_FLAG_AFK = title .. " "
         this.time = GetTime()
         this:Show()
@@ -61,14 +61,13 @@ pfUI:RegisterModule("easteregg", function ()
     end)
 
     -- trigger fireworks when being AFK
-    fireworks:RegisterEvent("CHAT_MSG_SYSTEM")
+    fireworks:RegisterEvent("PLAYER_FLAGS_CHANGED")
     fireworks:SetScript("OnEvent", function()
-      if strfind(arg1, _G.MARKED_AFK) or strfind(arg1, _G.MARKED_AFK_MESSAGE) then
+      local isAFK = UnitIsAFK('player')
+      if isAFK then
         this:SetAlpha(0)
-        this:Show()
-      elseif strfind(arg1, _G.CLEARED_AFK) then
-        this:Hide()
       end
+      this:SetShown(isAFK)
     end)
 
     -- basic explosion animation

modules/panel.lua

@@ -532,7 +532,7 @@ pfUI:RegisterModule("panel", function()
       -- Hearthstone bind location
       local hearth = CreateFrame("Frame", "pfPanelBindLocation", UIParent)
       hearth:RegisterEvent("PLAYER_ENTERING_WORLD")
-      hearth:RegisterEvent("CHAT_MSG_SYSTEM")
+      hearth:RegisterEvent("HEARTHSTONE_BOUND")
       hearth:SetScript("OnEvent", function()
         pfUI.panel:OutputPanel("bindlocation", T["Hearthstone"] .. ": " .. (GetBindLocation() or T["Not Set"]))
       end)