Module:Vertical header

Implements {{Vertical header}}

---

local p = {}

function p._vertical_header(args)
	
	local text = args.text
	local maxWidth = args.maxWidth
	local rows = 1
	local width = 0
	if maxWidth ~= "" then
		width = maxWidth
	else
		for eachMatch in text:gmatch("<[bB][rR] */? *>") do
			rows = rows + 1
		end
		width = rows * 0.875
		width = width .. "em"
	end
	
	local wikiText = "class = \"nowrap"
	local sortPadding = args.sortPadding
	if sortPadding == "" then
		wikiText = wikiText .. " unsortable"
	end
	
	local vertAlign = args.vertAlign
	wikiText = wikiText .. "\" style=\"line-height:99%;vertical-align:" .. vertAlign .. ";padding:"
	if sortPadding == "" then
		wikiText = wikiText .. ".4em"
	else
		wikiText = wikiText .. "21px"
	end
	wikiText = wikiText .. " .4em .2em;background-position:50% .4em !important;"
	
	local cellStyle = args.cellstyle:gsub("\"", "&quot;")
	wikiText = wikiText .. "min-width:" .. width .. ";max-width:" .. width .. ";width:" .. width .. ";overflow:hidden;" .. cellStyle .. "\""
	wikiText = wikiText .. " | <div style=\"vertical-rl=-webkit-writing-mode: vertical-rl; -o-writing-mode: vertical-rl; -ms-writing-mode: tb-rl;writing-mode: tb-rl; writing-mode: vertical-rl; layout-flow: vertical-ideographic;transform:rotate(180deg);display:inline-block;padding-left:1px;text-align:"
	
	local normalAlign = ""
	if vertAlign == "top" then
		normalAlign = "right"
	elseif vertAlign == "middle" then
		normalAlign = "center"
	else
		normalAlign = "left"
	end
	wikiText = wikiText .. normalAlign .. ";"
	
	local style = args.style:gsub("\"", "&quot;")
	wikiText = wikiText .. style .. "\">"
	
	local noBold = args.noBold
	if noBold == "" then
		wikiText = wikiText .. text
	else
		wikiText = wikiText .. mw.getCurrentFrame():preprocess("{{nobold|1=" .. text .. "}}")
	end
	wikiText = wikiText .. "</div>"
	return wikiText
end

function p.cell(frame)
	local args = frame.args
	return p._vertical_header(args)
end

return p