Module:Vertical header/sandbox

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require('strict')

local p = {}

local getArgs = require('Module:Arguments').getArgs
local yesno = require('Module:Yesno')

local function _vertical_header_cell(args)
	local text = args[1] or args.text
	
	local width = 0
	if args.maxWidth then
		width = args.maxWidth
	else
		local rows = 1
		for eachMatch in text:gmatch('<[bB][rR] */? *>') do
			rows = rows + 1
		end
		width = rows .. 'em'
	end
	
	local vertAlign = args.vertAlign and 'is-valign-' .. args.vertAlign
	local noBold = yesno(args.noBold) and 'is-normal'
	
	local cellDiv = mw.html.create('div')
		:addClass('nowrap ts-vertical-header')
		:addClass(vertAlign)
		:addClass(noBold)
		:addClass(args.class)
		:css({
			['width'] = width ~= '1em' and width,
			['max-width'] = width ~= '1em' and width,
			['style'] = args.cellstyle
		})
		:wikitext(args.text)
	
	local stylesheet = mw.getCurrentFrame():extensionTag{
		name = 'templatestyles',
		args = {src = 'Module:Vertical header/styles.css'}
	}
	
	return stylesheet .. tostring(cellDiv)
end

function p.cell(frame)
	return _vertical_header_cell(getArgs(frame))
end

return p