ମଡ୍ୟୁଲ:Tree chart

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Implements Template:Tree chart; Full documentation on chart syntax exists at Template:Tree chart/doc

This module uses the mw.html library to create rows of table cells whose borders draw lines to show relationships between elements. When an unnamed parameter matches a key in Module:Tree chart/data, the module will create a block with stylings as defined in the table. Each key in the table has a subtable with 0, 1, or 2 keys of its own: t for the "top" row and b for the "bottom row". Any unnamed parameter whose value does not exist in the table will be used to create elements on the chart, and additional named parameters for that value will be looked for.

require('Module:No globals')

local p = {}

local cells = mw.loadData('Module:Tree chart/data')

function p._main(cell_args)
	local ret = mw.html.create()
	local top = ret:tag('tr')
						:css{ height = '1px',
								['text-align'] = 'center' }
	local bottom = ret:tag('tr')
						:css{ height = '1px',
								['text-align'] = 'center' }
	for _, v in ipairs(cell_args) do
		if type(v) == 'string' then
				:attr{ colspan = v.colspan or cell_args.colspan or 6,
						rowspan = v.rowspan or cell_args.rowspan or 2 }
				:css{ padding = '0.2em',
						border = (v.border or cell_args.border or '2') .. 'px solid black' }
				:cssText(v.boxstyle or cell_args.boxstyle)
	return tostring(ret)

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:Tree chart', trim = false, removeBlanks = false})
	local cell_args = {
		colspan = args.colspan,
		rowspan = args.rowspan,
		border = args.border,
		boxstyle = args.boxstyle
	for _, val in ipairs(args) do
		local trimmedVal = val:match('^%s*(.-)%s*$')
		if trimmedVal == '' then
			trimmedVal = '$'
		if cells[trimmedVal] then
			table.insert(cell_args, trimmedVal)
			-- Unnamed params behave weirdly
			-- white space at the front counts for param_{{{1}}}, but not whitespace at the end, so remove it
			local rightTrimmedVal = val:gsub('%s+$','')
			table.insert(cell_args, {
				text = args[trimmedVal] or ('{{{'..trimmedVal..'}}}'),
				colspan = args['colspan_'..rightTrimmedVal],
				rowspan = args['rowspan_'..rightTrimmedVal],
				border = args['border_'..rightTrimmedVal],
				boxstyle = args['boxstyle_'..rightTrimmedVal]
	return p._main(cell_args)

return p