h2-mod/data/cdata/ui_scripts/mods/loading.lua

function createdivider(menu, text)
	local element = LUI.UIElement.new( {
		leftAnchor = true,
		rightAnchor = true,
		left = 0,
		right = 0,
		topAnchor = true,
		bottomAnchor = false,
		top = 0,
		bottom = 33.33
	})

	element.scrollingToNext = true
	element:addElement(LUI.MenuBuilder.BuildRegisteredType("h1_option_menu_titlebar", {
		title_bar_text = Engine.ToUpperCase(text)
	}))

	element.text = element:getFirstChild():getFirstChild():getNextSibling()

	menu.list:addElement(element)
	return element
end

function string:truncate(length)
	if (#self <= length) then
		return self
	end

	return self:sub(1, length - 3) .. "..."
end

LUI.addmenubutton("main_campaign", {
	index = 6,
	text = "@MENU_MODS",
	description = Engine.Localize("@MENU_MODS_DESC"),
	callback = function()
		LUI.FlowManager.RequestAddMenu(nil, "mods_menu")
	end
})

function getmodname(path)
	local modinfo = mods.getinfo(path)

	if (not modinfo.isvalid) then
		local desc = Engine.Localize("LUA_MENU_MOD_DESC_DEFAULT", string.el(path))
		return path, desc
	else
		local desc = Engine.Localize("@LUA_MENU_MOD_DESC", string.el(modinfo.description), string.el(modinfo.author), string.el(modinfo.version))
		return modinfo.name, desc
	end
end

LUI.MenuBuilder.registerType("mods_menu", function(a1)
	local menu = LUI.MenuTemplate.new(a1, {
		menu_title = "@MENU_MODS",
		exclusiveController = 0,
		menu_width = 400,
		menu_top_indent = LUI.MenuTemplate.spMenuOffset,
		showTopRightSmallBar = true,
		uppercase_title = true
	})

	local modfolder = game:getloadedmod()
	if (modfolder ~= "") then
		local name = getmodname(modfolder)
		createdivider(menu, Engine.Localize("@LUA_MENU_LOADED_MOD", string.el(name:truncate(24))))

		menu:AddButton("@LUA_MENU_UNLOAD", function()
			Engine.Exec("unloadmod")
		end, nil, true, nil, {
			desc_text = Engine.Localize("@LUA_MENU_UNLOAD_DESC")
		})
	end

	createdivider(menu, Engine.Localize("@LUA_MENU_AVAILABLE_MODS"))

	local contentpresent = false

	local mods = mods.getlist()
	for i = 1, #mods do
		contentpresent = true

		local name, desc = getmodname(mods[i])

		if (mods[i] ~= modfolder) then
			menu:AddButton(string.el(name), function()
				Engine.Exec("loadmod " .. mods[i])
			end, nil, true, nil, {
				desc_text = desc
			})
		end
	end
	
	menu:AddBackButton(function(a1)
		Engine.PlaySound(CoD.SFX.MenuBack)
		LUI.FlowManager.RequestLeaveMenu(a1)
	end)

	LUI.Options.InitScrollingList(menu.list, nil)
	menu:CreateBottomDivider()

	if (contentpresent) then
		menu.optionTextInfo = LUI.Options.AddOptionTextInfo(menu)
	end

	return menu
end)