if GetBagInfo == nil then
   function GetBagInfo(bagId)
      return "/esoui/art/icons/icon_missing.dds", GetBagSize(bagId)
   end
end
 
if GetShortAllianceName == nil then
   function GetShortAllianceName(alliance)
      return GetAllianceName(alliance)
   end
end
 
KEYBIND_STRIP_FRAGMENT = KEYBIND_STRIP_FRAGMENT or KEYBIND_STRIP_FADE_FRAGMENT
 
local _GetItemArmorType = GetItemArmorType
function GetItemArmorType(arg, ...)
   if type(arg) == "string" then
      return GetItemLinkArmorType(arg, ...)
   else
      return _GetItemArmorType(arg, ...)
   end
end
 
local _GetItemWeaponType = GetItemWeaponType
function GetItemWeaponType(arg, ...)
   if type(arg) == "string" then
      return GetItemLinkWeaponType(arg, ...)
   else
      return _GetItemWeaponType(arg, ...)
   end
end
 
 
--Changed/removed functions in Update 4
local _GetAchievementItemLink = GetAchievementItemLink
function GetAchievementItemLink(arg1, arg2, arg3)
   return _GetAchievementItemLink(arg1, arg3 or arg2)
end
 
if GetAchievementRewardInfo == nil then
   function GetAchievementRewardInfo(achievementId, rewardIndex)
      local rewards = {}
 
      local points = GetAchievementRewardPoints(achievementId)
      table.insert(rewards, {ACHIEVEMENT_REWARD_TYPE_POINTS, points})
 
      local hasRewardItem, itemName, iconTextureName, quality = GetAchievementRewardItem(achievementId)
      if hasRewardItem then
         table.insert(rewards, {ACHIEVEMENT_REWARD_TYPE_ITEM, itemName, iconTextureName, quality})
      end
 
      local hasRewardTitle, titleName = GetAchievementRewardTitle(achievementId)
      if hasRewardTitle then
         table.insert(rewards, {ACHIEVEMENT_REWARD_TYPE_TITLE, titleName})
      end
 
      local hasRewardDye, dyeIndex = GetAchievementRewardDye(achievementId)
      if hasRewardDye then
         table.insert(rewards, {ACHIEVEMENT_REWARD_TYPE_DYE, dyeIndex})
      end
 
      return unpack(rewards[rewardIndex])
   end
end
 
local _IsSmithingStyleKnown = IsSmithingStyleKnown
function IsSmithingStyleKnown(styleItemIndex, patternIndex)
   return _IsSmithingStyleKnown(styleItemIndex, patternIndex or 1)
end
 
GetNumLastCraftingResultItems = GetNumLastCraftingResultItems or GetNumLastCraftingResultItemsAndPenalty
 
 
--Changed/removed functions in Update 5
if not GetNumHeraldryItems then
   GetNumHeraldryItems = GetNumGuildSpecificItems
end
if not GetHeraldryItemInfo then
   GetHeraldryItemInfo = GetGuildSpecificItemInfo
end
if not BuyHeraldryItem then
   BuyHeraldryItem = BuyGuildSpecificItem
end
if not GetHeraldryItemLink then
   GetHeraldryItemLink = GetGuildSpecificItemLink
end
 
local function AddDataTable(control)
   control.data = control.data or setmetatable({}, {__index = control})
end
ZO_PreHook("ZO_OptionsWindow_InitializeControl", AddDataTable)
ZO_PreHook("IsControlAnOption", AddDataTable)
ZO_PreHook("ZO_Options_UpdateOption", AddDataTable)
ZO_PreHook("ZO_Options_SetupSlider", AddDataTable)
ZO_PreHook("ZO_Options_SetupDropdown", AddDataTable)
ZO_PreHook("ZO_Options_SetupCheckBox", AddDataTable)
ZO_PreHook("ZO_Options_OnMouseEnter", function(control)
   AddDataTable(control)
   if (control.tooltipText and control.data.tooltipText == nil) then
      control.data.tooltipText = control.tooltipText
   end
end)
 
if not ZO_OptionsWindow_LoadDefaults then
   ZO_OptionsWindow_LoadDefaults = function()
      KEYBOARD_OPTIONS:LoadDefaults()
   end
end
if not ZO_OptionsWindow_UpdatePanelOptions then
   ZO_OptionsWindow_UpdatePanelOptions = function(panelIndex, saveOptions)
      KEYBOARD_OPTIONS:UpdatePanelOptions(panelIndex, saveOptions)
   end
end
if not ZO_OptionsWindow_UpdateAllPanelOptions then
   ZO_OptionsWindow_UpdateAllPanelOptions = function(saveOptions)
      KEYBOARD_OPTIONS:UpdateAllPanelOptions(saveOptions)
   end
end
if not ZO_OptionsWindow_ChangePanels then
   ZO_OptionsWindow_ChangePanels = function(panel, hooksCall)
      if hooksCall == true then return end
      KEYBOARD_OPTIONS:ChangePanels(panel)
   end
   ZO_PreHook(ZO_SharedOptions, "ChangePanels", function(self, panel) ZO_OptionsWindow_ChangePanels(panel, true) end) --call functions hooked to ZO_OptionsWindow_ChangePanels (works only for pre-hook, but it should be enough)
end
 
 
EVENT_MANAGER:RegisterForEvent("CompatibilityTool", EVENT_ADD_ON_LOADED, function(event, name)
   if (name):find("^ZO_") then return end
   EVENT_MANAGER:UnregisterForEvent("CompatibilityTool", event)
 
   local inventory_mt = {}
   function inventory_mt.__index(self, key)
      if key == "numSlots" then
         return GetBagSize(self.backingBag)
      elseif key == "numUsedSlots" then
         return GetNumBagUsedSlots(self.backingBag)
      end
   end
 
   for i, inventory in pairs(PLAYER_INVENTORY.inventories) do
      setmetatable(inventory, inventory_mt)
   end
end)