Module:Infobox

This Lua module is used on 3,610,000+ pages, or roughly 2279% of all pages.
To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.
Transclusion count updated automatically (see documentation).
This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.
This module implements the {{Infobox}} template. Please see the template page for usage instructions.
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--
-- This module implements {{Infobox}}
--

local p = {}

local navbar = require('Module:Navbar')._navbar

local args = {}
local origArgs = {}
local root

local function notempty( s ) return s and s:match( '%S' ) end

local function fixChildBoxes(sval, tt)
	if notempty(sval) then
		local marker = '<span class=special_infobox_marker>'
		local s = sval
		s = mw.ustring.gsub(s, '(<%s*[Tt][Rr])', marker .. '%1')
		s = mw.ustring.gsub(s, '(</[Tt][Rr]%s*>)', '%1' .. marker)
		if s:match(marker) then
			s = mw.ustring.gsub(s, marker .. '%s*' .. marker, '')
			s = mw.ustring.gsub(s, '([\r\n]|-[^\r\n]*[\r\n])%s*' .. marker, '%1')
			s = mw.ustring.gsub(s, marker .. '%s*([\r\n]|-)', '%1')
			s = mw.ustring.gsub(s, '(</[Cc][Aa][Pp][Tt][Ii][Oo][Nn]%s*>%s*)' .. marker, '%1')
			s = mw.ustring.gsub(s, '(<%s*[Tt][Aa][Bb][Ll][Ee][^<>]*>%s*)' .. marker, '%1')
			s = mw.ustring.gsub(s, '^(%{|[^\r\n]*[\r\n]%s*)' .. marker, '%1')
			s = mw.ustring.gsub(s, '([\r\n]%{|[^\r\n]*[\r\n]%s*)' .. marker, '%1')
			s = mw.ustring.gsub(s, marker .. '(%s*</[Tt][Aa][Bb][Ll][Ee]%s*>)', '%1')
			s = mw.ustring.gsub(s, marker .. '(%s*\n|%})', '%1')
		end
		if s:match(marker) then
			local subcells = mw.text.split(s, marker)
			s = ''
			for k = 1, #subcells do
				if k == 1 then
					s = s .. subcells[k] .. '</' .. tt .. '></tr>'
				elseif k == #subcells then
					local rowstyle = ' style="display:none"'
					if notempty(subcells[k]) then rowstyle = ''	end
					s = s .. '<tr' .. rowstyle ..'><' .. tt .. ' colspan=2>\n' .. subcells[k]
				elseif notempty(subcells[k]) then
					if (k % 2) == 0 then
						s = s .. subcells[k]
					else
						s = s .. '<tr><' .. tt .. ' colspan=2>\n' .. subcells[k] .. '</' .. tt .. '></tr>'
					end
				end
			end
		end
		-- the next two lines add a newline at the end of lists for the PHP parser
		-- https://en.wikipedia.org/w/index.php?title=Template_talk:Infobox_musical_artist&oldid=849054481
		-- remove when [[:phab:T191516]] is fixed or OBE
		s = mw.ustring.gsub(s, '([\r\n][%*#;:][^\r\n]*)$', '%1\n')
		s = mw.ustring.gsub(s, '^([%*#;:][^\r\n]*)$', '%1\n')
		s = mw.ustring.gsub(s, '^([%*#;:])', '\n%1')
		s = mw.ustring.gsub(s, '^(%{%|)', '\n%1')
		return s
	else
		return sval
	end
end

local function union(t1, t2)
	-- Returns the union of the values of two tables, as a sequence.
	local vals = {}
	for k, v in pairs(t1) do
		vals[v] = true
	end
	for k, v in pairs(t2) do
		vals[v] = true
	end
	local ret = {}
	for k, v in pairs(vals) do
		table.insert(ret, k)
	end
	return ret
end

local function getArgNums(prefix)
	-- Returns a table containing the numbers of the arguments that exist
	-- for the specified prefix. For example, if the prefix was 'data', and
	-- 'data1', 'data2', and 'data5' exist, it would return {1, 2, 5}.
	local nums = {}
	for k, v in pairs(args) do
		local num = tostring(k):match('^' .. prefix .. '([1-9]%d*)$')
		if num then table.insert(nums, tonumber(num)) end
	end
	table.sort(nums)
	return nums
end

local function addRow(rowArgs)
	-- Adds a row to the infobox, with either a header cell
	-- or a label/data cell combination.
	if rowArgs.header and rowArgs.header ~= '_BLANK_' then
		root
			:tag('tr')
				:addClass(rowArgs.rowclass)
				:cssText(rowArgs.rowstyle)
				:attr('id', rowArgs.rowid)
				:tag('th')
					:attr('colspan', 2)
					:attr('id', rowArgs.headerid)
					:addClass(rowArgs.class)
					:addClass(args.headerclass)
					:css('text-align', 'center')
					:cssText(args.headerstyle)
					:cssText(rowArgs.rowcellstyle)
					:wikitext(fixChildBoxes(rowArgs.header, 'th'))
		if rowArgs.data then
			root:wikitext('[[Category:Pages which use infobox templates with ignored data cells]]')
		end
	elseif rowArgs.data then
		if not rowArgs.data:gsub('%[%[%s*[Cc][Aa][Tt][Ee][Gg][Oo][Rr][Yy]%s*:[^]]*]]', ''):match('^%S') then
			rowArgs.rowstyle = 'display:none'
		end
		local row = root:tag('tr')
		row:addClass(rowArgs.rowclass)
		row:cssText(rowArgs.rowstyle)
		row:attr('id', rowArgs.rowid)
		if rowArgs.label then
			row
				:tag('th')
					:attr('scope', 'row')
					:attr('id', rowArgs.labelid)
					:cssText(args.labelstyle)
					:cssText(rowArgs.rowcellstyle)
					:wikitext(rowArgs.label)
					:done()
		end

		local dataCell = row:tag('td')
		if not rowArgs.label then
			dataCell
				:attr('colspan', 2)
				:css('text-align', 'center')
		end
		dataCell
			:attr('id', rowArgs.dataid)
			:addClass(rowArgs.class)
			:cssText(rowArgs.datastyle)
			:cssText(rowArgs.rowcellstyle)
			:wikitext(fixChildBoxes(rowArgs.data, 'td'))
	end
end

local function renderTitle()
	if not args.title then return end

	root
		:tag('caption')
			:addClass(args.titleclass)
			:cssText(args.titlestyle)
			:wikitext(args.title)
end

local function renderAboveRow()
	if not args.above then return end

	root
		:tag('tr')
			:tag('th')
				:attr('colspan', 2)
				:addClass(args.aboveclass)
				:css('text-align', 'center')
				:css('font-size', '125%')
				:css('font-weight', 'bold')
				:cssText(args.abovestyle)
				:wikitext(fixChildBoxes(args.above,'th'))
end

local function renderBelowRow()
	if not args.below then return end

	root
		:tag('tr')
			:tag('td')
				:attr('colspan', '2')
				:addClass(args.belowclass)
				:css('text-align', 'center')
				:cssText(args.belowstyle)
				:wikitext(fixChildBoxes(args.below,'td'))
end

local function renderSubheaders()
	if args.subheader then
		args.subheader1 = args.subheader
	end
	if args.subheaderrowclass then
		args.subheaderrowclass1 = args.subheaderrowclass
	end
	local subheadernums = getArgNums('subheader')
	for k, num in ipairs(subheadernums) do
		addRow({
			data = args['subheader' .. tostring(num)],
			datastyle = args.subheaderstyle,
			rowcellstyle = args['subheaderstyle' .. tostring(num)],
			class = args.subheaderclass,
			rowclass = args['subheaderrowclass' .. tostring(num)]
		})
	end
end

local function renderImages()
	if args.image then
		args.image1 = args.image
	end
	if args.caption then
		args.caption1 = args.caption
	end
	local imagenums = getArgNums('image')
	for k, num in ipairs(imagenums) do
		local caption = args['caption' .. tostring(num)]
		local data = mw.html.create():wikitext(args['image' .. tostring(num)])
		if caption then
			data
				:tag('div')
					:cssText(args.captionstyle)
					:wikitext(caption)
		end
		addRow({
			data = tostring(data),
			datastyle = args.imagestyle,
			class = args.imageclass,
			rowclass = args['imagerowclass' .. tostring(num)]
		})
	end
end

local function preprocessRows()
	-- Gets the union of the header and data argument numbers,
	-- and renders them all in order using addRow.
	local rownums = union(getArgNums('header'), getArgNums('data'))
	table.sort(rownums)
	local lastheader
	for k, num in ipairs(rownums) do
		if args['header' .. tostring(num)] then
			if lastheader then
				args['header' .. tostring(lastheader)] = nil
			end
			lastheader = num
		elseif args['data' .. tostring(num)] and args['data' .. tostring(num)]:gsub('%[%[%s*[Cc][Aa][Tt][Ee][Gg][Oo][Rr][Yy]%s*:[^]]*]]', ''):match('^%S') then
			local data = args['data' .. tostring(num)]
			if data:gsub('%[%[%s*[Cc][Aa][Tt][Ee][Gg][Oo][Rr][Yy]%s*:[^]]*]]', ''):match('%S') then
				lastheader = nil
			end
		end
	end
	if lastheader then
		args['header' .. tostring(lastheader)] = nil
	end
end

local function renderRows()
	-- Gets the union of the header and data argument numbers,
	-- and renders them all in order using addRow.
	local rownums = union(getArgNums('header'), getArgNums('data'))
	table.sort(rownums)
	for k, num in ipairs(rownums) do
		addRow({
			header = args['header' .. tostring(num)],
			label = args['label' .. tostring(num)],
			data = args['data' .. tostring(num)],
			datastyle = args.datastyle,
			class = args['class' .. tostring(num)],
			rowclass = args['rowclass' .. tostring(num)],
			rowstyle = args['rowstyle' .. tostring(num)],
			rowcellstyle = args['rowcellstyle' .. tostring(num)],
			dataid = args['dataid' .. tostring(num)],
			labelid = args['labelid' .. tostring(num)],
			headerid = args['headerid' .. tostring(num)],
			rowid = args['rowid' .. tostring(num)]
		})
	end
end

local function renderNavBar()
	if not args.name then return end

	root
		:tag('tr')
			:tag('td')
				:attr('colspan', '2')
				:css('text-align', 'right')
				:wikitext(navbar{
					args.name,
					mini = 1,
				})
end

local function renderItalicTitle()
	local italicTitle = args['italic title'] and mw.ustring.lower(args['italic title'])
	if italicTitle == '' or italicTitle == 'force' or italicTitle == 'yes' then
		root:wikitext(mw.getCurrentFrame():expandTemplate({title = 'italic title'}))
	end
end

local function renderTrackingCategories()
	if args.decat ~= 'yes' then
		if args.child == 'yes' then
			if args.title then
				root:wikitext('[[Category:Pages which use embedded infobox templates with the title parameter]]')
			end
		elseif #(getArgNums('data')) == 0 and mw.title.getCurrentTitle().namespace == 0 then
			root:wikitext('[[Category:Articles which use infobox templates with no data rows]]')
		end
	end
end

local function _infobox()
	-- Specify the overall layout of the infobox, with special settings
	-- if the infobox is used as a 'child' inside another infobox.
	if args.child ~= 'yes' then
		root = mw.html.create('table')

		root
			:addClass((args.subbox ~= 'yes') and 'infobox' or nil)
			:addClass(args.bodyclass)

			if args.subbox == 'yes' then
				root
					:css('padding', '0')
					:css('border', 'none')
					:css('margin', '-3px')
					:css('width', 'auto')
					:css('min-width', '100%')
					:css('font-size', '100%')
					:css('clear', 'none')
					:css('float', 'none')
					:css('background-color', 'transparent')
			else
				root
					:css('width', '22em')
			end
		root
			:cssText(args.bodystyle)

		renderTitle()
		renderAboveRow()
	else
		root = mw.html.create()

		root
			:wikitext(args.title)
	end

	renderSubheaders()
	renderImages()
	if args.autoheaders then
		preprocessRows()
	end
	renderRows()
	renderBelowRow()
	renderNavBar()
	renderItalicTitle()
	renderTrackingCategories()

	return tostring(root)
end

local function preprocessSingleArg(argName)
	-- If the argument exists and isn't blank, add it to the argument table.
	-- Blank arguments are treated as nil to match the behaviour of ParserFunctions.
	if origArgs[argName] and origArgs[argName] ~= '' then
		args[argName] = origArgs[argName]
	end
end

local function preprocessArgs(prefixTable, step)
	-- Assign the parameters with the given prefixes to the args table, in order, in batches
	-- of the step size specified. This is to prevent references etc. from appearing in the
	-- wrong order. The prefixTable should be an array containing tables, each of which has
	-- two possible fields, a "prefix" string and a "depend" table. The function always parses
	-- parameters containing the "prefix" string, but only parses parameters in the "depend"
	-- table if the prefix parameter is present and non-blank.
	if type(prefixTable) ~= 'table' then
		error("Non-table value detected for the prefix table", 2)
	end
	if type(step) ~= 'number' then
		error("Invalid step value detected", 2)
	end

	-- Get arguments without a number suffix, and check for bad input.
	for i,v in ipairs(prefixTable) do
		if type(v) ~= 'table' or type(v.prefix) ~= "string" or (v.depend and type(v.depend) ~= 'table') then
			error('Invalid input detected to preprocessArgs prefix table', 2)
		end
		preprocessSingleArg(v.prefix)
		-- Only parse the depend parameter if the prefix parameter is present and not blank.
		if args[v.prefix] and v.depend then
			for j, dependValue in ipairs(v.depend) do
				if type(dependValue) ~= 'string' then
					error('Invalid "depend" parameter value detected in preprocessArgs')
				end
				preprocessSingleArg(dependValue)
			end
		end
	end

	-- Get arguments with number suffixes.
	local a = 1 -- Counter variable.
	local moreArgumentsExist = true
	while moreArgumentsExist == true do
		moreArgumentsExist = false
		for i = a, a + step - 1 do
			for j,v in ipairs(prefixTable) do
				local prefixArgName = v.prefix .. tostring(i)
				if origArgs[prefixArgName] then
					moreArgumentsExist = true -- Do another loop if any arguments are found, even blank ones.
					preprocessSingleArg(prefixArgName)
				end
				-- Process the depend table if the prefix argument is present and not blank, or
				-- we are processing "prefix1" and "prefix" is present and not blank, and
				-- if the depend table is present.
				if v.depend and (args[prefixArgName] or (i == 1 and args[v.prefix])) then
					for j,dependValue in ipairs(v.depend) do
						local dependArgName = dependValue .. tostring(i)
						preprocessSingleArg(dependArgName)
					end
				end
			end
		end
		a = a + step
	end
end

local function parseDataParameters()
	-- Parse the data parameters in the same order that the old {{infobox}} did, so that
	-- references etc. will display in the expected places. Parameters that depend on
	-- another parameter are only processed if that parameter is present, to avoid
	-- phantom references appearing in article reference lists.
	preprocessSingleArg('autoheaders')
	preprocessSingleArg('child')
	preprocessSingleArg('bodyclass')
	preprocessSingleArg('subbox')
	preprocessSingleArg('bodystyle')
	preprocessSingleArg('title')
	preprocessSingleArg('titleclass')
	preprocessSingleArg('titlestyle')
	preprocessSingleArg('above')
	preprocessSingleArg('aboveclass')
	preprocessSingleArg('abovestyle')
	preprocessArgs({
		{prefix = 'subheader', depend = {'subheaderstyle', 'subheaderrowclass'}}
	}, 10)
	preprocessSingleArg('subheaderstyle')
	preprocessSingleArg('subheaderclass')
	preprocessArgs({
		{prefix = 'image', depend = {'caption', 'imagerowclass'}}
	}, 10)
	preprocessSingleArg('captionstyle')
	preprocessSingleArg('imagestyle')
	preprocessSingleArg('imageclass')
	preprocessArgs({
		{prefix = 'header'},
		{prefix = 'data', depend = {'label'}},
		{prefix = 'rowclass'},
		{prefix = 'rowstyle'},
		{prefix = 'rowcellstyle'},
		{prefix = 'class'},
		{prefix = 'dataid'},
		{prefix = 'labelid'},
		{prefix = 'headerid'},
		{prefix = 'rowid'}
	}, 50)
	preprocessSingleArg('headerclass')
	preprocessSingleArg('headerstyle')
	preprocessSingleArg('labelstyle')
	preprocessSingleArg('datastyle')
	preprocessSingleArg('below')
	preprocessSingleArg('belowclass')
	preprocessSingleArg('belowstyle')
	preprocessSingleArg('name')
	args['italic title'] = origArgs['italic title'] -- different behaviour if blank or absent
	preprocessSingleArg('decat')
end

function p.infobox(frame)
	-- If called via #invoke, use the args passed into the invoking template.
	-- Otherwise, for testing purposes, assume args are being passed directly in.
	if frame == mw.getCurrentFrame() then
		origArgs = frame:getParent().args
	else
		origArgs = frame
	end
	
	parseDataParameters()
	
	return _infobox()
end

function p.infoboxTemplate(frame)
	-- For calling via #invoke within a template
	origArgs = {}
	for k,v in pairs(frame.args) do origArgs[k] = mw.text.trim(v) end
	
	parseDataParameters()
	
	return _infobox()
end
return p
Module:Infobox

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