[circonian]

Originally Posted by sirinsidiator Maybe you can make a small library instead of everyone making their own version? That way you don't have to do anything special to make it work between your addons.

For our addons it would need the same code, both Advanced Filters & FilterIt use the default inventory menu bar (with a subBar), but how would AGS or other addons that want to use their own menu bar handle it? Do you still want to use a flag to decide which filter bars get shown? If were doing it in a library I'de rather not watch for loading addons. That would force library updates if addons make changes or new addons are released wanting to use their own bars as well like AGS.

Example Lib:

Warning: Spoiler

-- Register with LibStub
local MAJOR, MINOR = "LibTradeSellFilters", 1
local lib, oldminor = LibStub:NewLibrary(MAJOR, MINOR)
if not lib then return end -- the same or newer version of this lib is already loaded into memory
 
do
    local layoutData = BACKPACK_TRADING_HOUSE_LAYOUT_FRAGMENT.layoutData
    local sellFiltersEnabled = layoutData.sellFiltersEnabled
 
    -- Give AGS & others a chance to block
    -- this code from being run ??
    if sellFiltersEnabled then return end
    layoutData.sellFiltersEnabled = true
 
    layoutData.inventoryTopOffsetY = 43
    layoutData.hiddenFilters = { [ITEMFILTERTYPE_QUEST] = true }  
    local origAdditionalFilter = layoutData.additionalFilter 
    layoutData.additionalFilter = function (slot)
                return origAdditionalFilter(slot) and (not IsItemBound(slot.bagId, slot.slotIndex))
            end
 
    -- Prehook HandleTabSwitch for sell mode:
    local function OnHandleTabSwitch(self, tabData)
        local mode = tabData.descriptor
        
        if mode == ZO_TRADING_HOUSE_MODE_SELL then
            ZO_PlayerInventoryTabs:SetHidden(false)
        end
        return false
    end
    ZO_PreHook(TRADING_HOUSE, "HandleTabSwitch", OnHandleTabSwitch)
end

Then for an addon like AGS that doesn't want to use those bars you could check to see if the flag is set & if not set it and use your bars.

One other problem, if we use a library, it will pretty much be whichever addon loads first wins without giving the user an option to select which bars to use, unless someone has a suggestion on how to handle that part.