Module:Infobox/tabber

Documentation for this module may be created at Module:Infobox/tabber/doc

local makeEmptyPartEmptyNoFrame = require("Module:Infobox").makeEmptyPartEmptyNoFrame
local p = {}

p.generateTabber = function(frame)
	-- Get access to the arguments of the template that called this function
	local parentFrame = frame:getParent()
	-- Find which number arguments are present
	local tabNums = {}
	for k, _ in pairs(parentFrame.args) do
		if type(k) == "number" then
			table.insert(tabNums, k)
		end
	end
	-- Sort them because order is not guaranteed
	-- see https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#frame.args
	-- "However, due to how Lua implements table iterators, iterating over
	--  arguments will return them in an unspecified order, and there's no way
	--  to know the original order as they appear in wikitext."
	table.sort(tabNums)
	-- Create a string with the text that goes in the <tabber> tag
	local tabberStr = ""
	local nonEmptyTabs = {}
	for _, i in ipairs(tabNums) do
		if string.find(makeEmptyPartEmptyNoFrame(parentFrame.args[i]), "%S") then
			table.insert(nonEmptyTabs, i)
			local tabLabel = parentFrame.args["label" .. i]
			-- If no label it just uses the number as a label
			if tabLabel then
				if not string.find(tabLabel, "%S") then
					tabLabel = i
				end
			else
				tabLabel = i
			end
			tabberStr = tabberStr ..
				"|-|" ..
				tabLabel ..
				"=<table style=\"width:100%;border-collapse:collapse\">" ..
				parentFrame.args[i] ..
				"</table>"
		end
	end
	-- If there is only one tab, don't generate tabber unless allow-one-tab=yes
	if (not (parentFrame.args["allow-one-tab"] == "yes")) and #nonEmptyTabs == 1 then
		if string.find(makeEmptyPartEmptyNoFrame(parentFrame.args[nonEmptyTabs[1]]), "%S") then
			return parentFrame.args[nonEmptyTabs[1]]
		else
			return frame:preprocess("<nowiki />")
		end
	end
	-- Return
	if tabberStr == "" then
		return frame:preprocess("<nowiki />")
	else
		return "<tr><td colspan=\"2\" style=\"padding:0;width:min-content\"><div style=\"width:21.6em\">" .. frame:extensionTag("tabber", tabberStr) .. "</div></td></tr>"
	end
end

return p