Module:Media table section

This Lua module is used on many pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.

This module is rated as ready for general use. It has reached a mature state, is considered relatively stable and bug-free, and may be used wherever appropriate. It can be mentioned on help pages and other Wikipedia resources as an option for new users. To minimise server load and avoid disruptive output, improvements should be developed through sandbox testing rather than repeated trial-and-error editing.

Lua error in Module:Lua_banner at line 115: attempt to compare nil with number.

Usage

Creates the usages related to {{Media table section}} with the parameters defined in the documentation of the template:

A row for a parted media table with

{{#invoke:Media table section|part}}

-- This module implements {{Media table section}}.

local MediaTable = {}
local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )
local contrast_ratio = require('Module:Color contrast')._ratio

function MediaTable.part(args)
	local row = mw.html.create('tr')
	
	if (args.c == 'header-blue' or args.c == nil or args.c == '') then args.c = '#CCCCFF' end
	if (args.c == 'header-grey' or args.c == 'header-gray') then args.c = '#EAECF0' end
	
	-- Add # to color if necessary
	if args.c ~= nil and HTMLcolor[args.c] == nil then
		args.c = '#'..(mw.ustring.match(args.c, '^[%s#]*([a-fA-F0-9]*)[%s]*$') or '')
	end
	
	local black_cr = contrast_ratio{args.c or '#CCCCFF', 'black', ['error'] = 0}
	local white_cr = contrast_ratio{'white', args.c or '#CCCCFF', ['error'] = 0}
	
	local partTypes = {
		{'act','Act'},
		{'chapter','Chapter'},
		{'part','Part'},
		{'volume','Volume'},
		{'week','Week'},
	}
	
	local displaytext = ''
	local isAnyPartSet = false
	
	for k,v in pairs(partTypes) do
		if args[v[1]] then
			isAnyPartSet = true
			displaytext = v[2] .. ' ' .. args[v[1]]
		end
	end
	if args.subtitle then
		displaytext = displaytext .. ((isAnyPartSet and ': ' or '') .. args.subtitle)
	end

	local plainText = require('Module:Plain text')._main
	local displayTextAnchor = plainText(displaytext)
	
	row:tag('td')
		:attr('colspan', 13)
		:attr('id', args.id or displayTextAnchor)
		:css('text-align', 'center')
		:css('background-color', args.c or '#CCCCFF')
		:css('color', black_cr > white_cr and 'black' or 'white')
		:wikitext((args.nobold and displaytext or "'''" .. displaytext .. "'''") .. (args.r and "&#8202;" .. MediaTable.reference(args.r, args.c) or ''))
	
	return tostring(row)
end

function MediaTable.reference(reference, background)
	local link1_cr = contrast_ratio{'#0645AD', background or '#CCCCFF', ['error'] = 0}
	local link2_cr = contrast_ratio{'#0B0080', background or '#CCCCFF', ['error'] = 0}
	
	local refspan = mw.html.create('span')
		:wikitext(reference)
	
	if link1_cr < 7 or link2_cr < 7 then
		refspan
			:css('color','black')
			:css('background-color','white')
			:css('padding','1px')
			:css('display','inline-block')
			:css('line-height','50%')
	end
	
	return tostring(refspan)
end

--------------------------------------------------------------------------------
-- Exports
--------------------------------------------------------------------------------

local p = {}

function p.part(frame)
	local args = require('Module:Arguments').getArgs(frame, {
		removeBlanks = false,
		wrappers = 'Template:Media table section'
	})
	return MediaTable.part(args)
end

return p