Module:Message box: Difference between revisions

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(spread comment over two lines, as modules do not wrap lines)
(Allow passing attributes per protected edit request by User:Jackmcbarn. Also remove undocumented "hidden" parameter and format the module so it mostly fits within 80 chars.)
Line 1: Line 1:
-- This is a meta-module for producing message box templates, including {{mbox}}, {{ambox}},
-- This is a meta-module for producing message box templates, including
-- {{imbox}}, {{tmbox}}, {{ombox}}, {{cmbox}} and {{fmbox}}.
-- {{mbox}}, {{ambox}}, {{imbox}}, {{tmbox}}, {{ombox}}, {{cmbox}} and {{fmbox}}.


-- Require necessary modules.
-- Require necessary modules.
Line 122: Line 122:
nsVals[i] = format('"%s"', val)
nsVals[i] = format('"%s"', val)
end
end
error('invalid ns parameter passed to box:addCat; valid values are ' .. mw.text.listToText(nsVals, nil, ' or '))
error(
'invalid ns parameter passed to box:addCat; valid values are '
.. mw.text.listToText(nsVals, nil, ' or ')
)
end
end
self[tname] = self[tname] or {}
self[tname] = self[tname] or {}
Line 136: Line 139:
self.classes = self.classes or {}
self.classes = self.classes or {}
tinsert(self.classes, class)
tinsert(self.classes, class)
end
function box:addAttr(attr, val)
if type(attr) ~= 'string' or type(val) ~= 'string' then return end
self.attrs = self.attrs or {}
tinsert(self.attrs, attr)
end
end


Line 158: Line 167:
end
end
tinsert(boxTypes, '"mbox"')
tinsert(boxTypes, '"mbox"')
error(format('invalid message box type "%s"; valid types are %s', tostring(boxType), mw.text.listToText(boxTypes)), 2)
error(format(
'invalid message box type "%s"; valid types are %s',
tostring(boxType),
mw.text.listToText(boxTypes)
), 2)
end
end
return cfg
return cfg
Line 164: Line 177:


function box:removeBlankArgs(cfg, args)
function box:removeBlankArgs(cfg, args)
-- Only allow blank arguments for the parameter names listed in cfg.allowBlankParams.
-- Only allow blank arguments for the parameter names listed in
-- cfg.allowBlankParams.
local newArgs = {}
local newArgs = {}
for k, v in pairs(args) do
for k, v in pairs(args) do
Line 181: Line 195:
self.type = args.type
self.type = args.type
local typeData = cfg.types[self.type]
local typeData = cfg.types[self.type]
self.invalidTypeError = cfg.showInvalidTypeError and self.type and not typeData and true or false
self.invalidTypeError = cfg.showInvalidTypeError
and self.type
and not typeData
and true
or false
typeData = typeData or cfg.types[cfg.default]
typeData = typeData or cfg.types[cfg.default]
self.typeClass = typeData.class
self.typeClass = typeData.class
Line 206: Line 224:
self.id = args.id
self.id = args.id
end
end
self:addClass(cfg.usePlainlinksParam and yesno(args.plainlinks or true) and 'plainlinks')
self:addClass(
cfg.usePlainlinksParam and yesno(args.plainlinks or true) and 'plainlinks'
)
for _, class in ipairs(cfg.classes or {}) do
for _, class in ipairs(cfg.classes or {}) do
self:addClass(class)
self:addClass(class)
Line 212: Line 232:
if self.isSmall then
if self.isSmall then
self:addClass(cfg.smallClass or 'mbox-small')
self:addClass(cfg.smallClass or 'mbox-small')
end
if yesno(args.hidden) then
self:addClass('infobox editsection')
end
end
self:addClass(self.typeClass)
self:addClass(self.typeClass)
self:addClass(args.class)
self:addClass(args.class)
self.style = args.style
self.style = args.style
self.attrs = args.attrs


-- Set text style.
-- Set text style.
self.textstyle = args.textstyle
self.textstyle = args.textstyle


-- Find if we are on the template page or not. This functionality is only used if useCollapsibleTextFields is set,
-- Find if we are on the template page or not. This functionality is only
-- or if both cfg.templateCategory and cfg.templateCategoryRequireName are set.
-- used if useCollapsibleTextFields is set, or if both cfg.templateCategory
-- and cfg.templateCategoryRequireName are set.
self.useCollapsibleTextFields = cfg.useCollapsibleTextFields
self.useCollapsibleTextFields = cfg.useCollapsibleTextFields
if self.useCollapsibleTextFields or cfg.templateCategory and cfg.templateCategoryRequireName then
if self.useCollapsibleTextFields
or cfg.templateCategory
and cfg.templateCategoryRequireName
then
self.name = args.name
self.name = args.name
if self.name then
if self.name then
local templateName = mw.ustring.match(self.name, '^[tT][eE][mM][pP][lL][aA][tT][eE][%s_]*:[%s_]*(.*)$') or self.name
local templateName = mw.ustring.match(
self.name,
'^[tT][eE][mM][pP][lL][aA][tT][eE][%s_]*:[%s_]*(.*)$'
) or self.name
templateName = 'Template:' .. templateName
templateName = 'Template:' .. templateName
self.templateTitle = getTitleObject(templateName)
self.templateTitle = getTitleObject(templateName)
end
end
self.isTemplatePage = self.templateTitle and mw.title.equals(self.title, self.templateTitle) or false
self.isTemplatePage = self.templateTitle
and mw.title.equals(self.title, self.templateTitle)
or false
end
end


-- Process data for collapsible text fields. At the moment these are only used in {{ambox}}.
-- Process data for collapsible text fields. At the moment these are only
-- used in {{ambox}}.
if self.useCollapsibleTextFields then
if self.useCollapsibleTextFields then
-- Get the self.issue value.
-- Get the self.issue value.
Line 261: Line 289:
-- Get the self.talk value.
-- Get the self.talk value.
local talk = args.talk
local talk = args.talk
if talk == '' -- Show talk links on the template page or template subpages if the talk parameter is blank.
-- Show talk links on the template page or template subpages if the talk
-- parameter is blank.
if talk == ''
and self.templateTitle  
and self.templateTitle  
and (mw.title.equals(self.templateTitle, self.title) or self.title:isSubpageOf(self.templateTitle))
and (
mw.title.equals(self.templateTitle, self.title)
or self.title:isSubpageOf(self.templateTitle)
)
then
then
talk = '#'
talk = '#'
Line 270: Line 303:
end
end
if talk then
if talk then
-- If the talk value is a talk page, make a link to that page. Else assume that it's a section heading,
-- If the talk value is a talk page, make a link to that page. Else
-- and make a link to the talk page of the current page with that section heading.
-- assume that it's a section heading, and make a link to the talk
-- page of the current page with that section heading.
local talkTitle = getTitleObject(talk)
local talkTitle = getTitleObject(talk)
local talkArgIsTalkPage = true
local talkArgIsTalkPage = true
if not talkTitle or not talkTitle.isTalkPage then
if not talkTitle or not talkTitle.isTalkPage then
talkArgIsTalkPage = false
talkArgIsTalkPage = false
talkTitle = getTitleObject(self.title.text, mw.site.namespaces[self.title.namespace].talk.id)
talkTitle = getTitleObject(
self.title.text,
mw.site.namespaces[self.title.namespace].talk.id
)
end
end
if talkTitle and talkTitle.exists then
if talkTitle and talkTitle.exists then
local talkText = 'Relevant discussion may be found on'
local talkText = 'Relevant discussion may be found on'
if talkArgIsTalkPage then
if talkArgIsTalkPage then
talkText = format('%s [[%s|%s]].', talkText, talk, talkTitle.prefixedText)
talkText = format(
'%s [[%s|%s]].',
talkText,
talk,
talkTitle.prefixedText
)
else
else
talkText = format('%s the [[%s#%s|talk page]].', talkText, talkTitle.prefixedText, talk)
talkText = format(
'%s the [[%s#%s|talk page]].',
talkText,
talkTitle.prefixedText,
talk
)
end
end
self.talk = talkText
self.talk = talkText
Line 303: Line 350:
end
end


-- Set the non-collapsible text field. At the moment this is used by all box types other than ambox,
-- Set the non-collapsible text field. At the moment this is used by all box
-- and also by ambox when small=yes.
-- types other than ambox, and also by ambox when small=yes.
if self.isSmall then
if self.isSmall then
self.text = args.smalltext or args.text
self.text = args.smalltext or args.text
Line 328: Line 375:
self.imageLeft = imageLeft
self.imageLeft = imageLeft
if not imageLeft then
if not imageLeft then
local imageSize = self.isSmall and (cfg.imageSmallSize or '30x30px') or '40x40px'
local imageSize = self.isSmall
self.imageLeft = format('[[File:%s|%s|link=|alt=]]', self.typeImage or 'Imbox notice.png', imageSize)
and (cfg.imageSmallSize or '30x30px')
or '40x40px'
self.imageLeft = format('[[File:%s|%s|link=|alt=]]', self.typeImage
or 'Imbox notice.png', imageSize)
end
end
end
end
Line 360: Line 410:
local preposition = 'from'
local preposition = 'from'
for _, num in ipairs(self.categoryParamNums) do
for _, num in ipairs(self.categoryParamNums) do
local mainCat = args['cat' .. tostring(num)] or args['category' .. tostring(num)]
local mainCat = args['cat' .. tostring(num)]
or args['category' .. tostring(num)]
local allCat = args['all' .. tostring(num)]
local allCat = args['all' .. tostring(num)]
mainCat = type(mainCat) == 'string' and mainCat
mainCat = type(mainCat) == 'string' and mainCat
Line 369: Line 420:
catTitle = getTitleObject('Category:' .. catTitle)
catTitle = getTitleObject('Category:' .. catTitle)
if not catTitle or not catTitle.exists then
if not catTitle or not catTitle.exists then
self:addCat('main', 'Articles with invalid date parameter in template')
self:addCat(
'main',
'Articles with invalid date parameter in template'
)
end
end
elseif mainCat and (not date or date == '') then
elseif mainCat and (not date or date == '') then
Line 426: Line 480:
end
end


-- Convert category tables to strings and pass them through [[Module:Category handler]].
-- Convert category tables to strings and pass them through
-- [[Module:Category handler]].
self.categories = categoryHandler{
self.categories = categoryHandler{
main = tconcat(self.mainCats or {}),
main = tconcat(self.mainCats or {}),
Line 462: Line 517:
.cssText(self.style)
.cssText(self.style)
.attr('role', 'presentation')
.attr('role', 'presentation')
for attr, val in pairs(self.attrs or {}) do
boxTable
.attr(attr, val)
end


-- Add the left-hand image.
-- Add the left-hand image.
Line 468: Line 527:
local imageLeftCell = row.tag('td').addClass('mbox-image')
local imageLeftCell = row.tag('td').addClass('mbox-image')
if self.imageCellDiv then
if self.imageCellDiv then
-- If we are using a div, redefine imageLeftCell so that the image is inside it.
-- If we are using a div, redefine imageLeftCell so that the image
-- Divs use style="width: 52px;", which limits the image width to 52px. If any
-- is inside it. Divs use style="width: 52px;", which limits the
-- images in a div are wider than that, they may overlap with the text or cause
-- image width to 52px. If any images in a div are wider than that,
-- other display problems.
-- they may overlap with the text or cause other display problems.
imageLeftCell = imageLeftCell.tag('div').css('width', '52px')  
imageLeftCell = imageLeftCell.tag('div').css('width', '52px')  
end
end
Line 477: Line 536:
.wikitext(self.imageLeft)
.wikitext(self.imageLeft)
elseif self.imageEmptyCell then
elseif self.imageEmptyCell then
-- Some message boxes define an empty cell if no image is specified, and some don't.
-- Some message boxes define an empty cell if no image is specified, and
-- The old template code in templates where empty cells are specified gives the following hint:
-- some don't. The old template code in templates where empty cells are
-- "No image. Cell with some width or padding necessary for text cell to have 100% width."
-- specified gives the following hint: "No image. Cell with some width
-- or padding necessary for text cell to have 100% width."
row.tag('td')
row.tag('td')
.addClass('mbox-empty-cell')  
.addClass('mbox-empty-cell')  
Line 488: Line 548:
local textCell = row.tag('td').addClass('mbox-text')
local textCell = row.tag('td').addClass('mbox-text')
if self.useCollapsibleTextFields then
if self.useCollapsibleTextFields then
-- The message box uses advanced text parameters that allow things to be collapsible. At the
-- The message box uses advanced text parameters that allow things to be
-- moment, only ambox uses this.
-- collapsible. At the moment, only ambox uses this.
textCell
textCell
.cssText(self.textstyle)
.cssText(self.textstyle)
Line 522: Line 582:
local imageRightCell = row.tag('td').addClass('mbox-imageright')
local imageRightCell = row.tag('td').addClass('mbox-imageright')
if self.imageCellDiv then
if self.imageCellDiv then
imageRightCell = imageRightCell.tag('div').css('width', '52px') -- If we are using a div, redefine imageRightCell so that the image is inside it.
-- If we are using a div, redefine imageRightCell so that the image
-- is inside it.
imageRightCell = imageRightCell.tag('div').css('width', '52px')
end
end
imageRightCell
imageRightCell
Line 543: Line 605:
.tag('div')
.tag('div')
.css('text-align', 'center')
.css('text-align', 'center')
.wikitext(format('This message box is using an invalid "type=%s" parameter and needs fixing.', self.type or ''))
.wikitext(format(
'This message box is using an invalid "type=%s" parameter and needs fixing.',
self.type or ''
))
end
end



Revision as of 04:39, 8 April 2014

Documentation for this module may be created at Module:Message box/doc

-- This is a meta-module for producing message box templates, including
-- {{mbox}}, {{ambox}}, {{imbox}}, {{tmbox}}, {{ombox}}, {{cmbox}} and {{fmbox}}.

-- Require necessary modules.
local getArgs = require('Module:Arguments').getArgs
local htmlBuilder = require('Module:HtmlBuilder')
local categoryHandler = require('Module:Category handler').main
local yesno = require('Module:Yesno')

-- Load the configuration page.
local cfgTables = mw.loadData('Module:Message box/configuration')

-- Get a language object for formatDate and ucfirst.
local lang = mw.language.getContentLanguage()

-- Set aliases for often-used functions to reduce table lookups.
local format = mw.ustring.format
local tinsert = table.insert
local tconcat = table.concat
local trim = mw.text.trim

--------------------------------------------------------------------------------
-- Helper functions
--------------------------------------------------------------------------------

local function getTitleObject(page, ...)
	if type(page) == 'string' then
		-- Get the title object, passing the function through pcall 
		-- in case we are over the expensive function count limit.
		local success, title = pcall(mw.title.new, page, ...)
		if success then
			return title
		end
	end
end

local function union(t1, t2)
	-- Returns the union of two arrays.
	local vals = {}
	for i, v in ipairs(t1) do
		vals[v] = true
	end
	for i, v in ipairs(t2) do
		vals[v] = true
	end
	local ret = {}
	for k in pairs(vals) do
		tinsert(ret, k)
	end
	table.sort(ret)
	return ret
end

local function getArgNums(args, prefix)
	local nums = {}
	for k, v in pairs(args) do
		local num = mw.ustring.match(tostring(k), '^' .. prefix .. '([1-9]%d*)$')
		if num then
			tinsert(nums, tonumber(num))
		end
	end
	table.sort(nums)
	return nums
end

--------------------------------------------------------------------------------
-- Box class definition
--------------------------------------------------------------------------------

local box = {}
box.__index = box

function box.new()
	local obj = {}
	setmetatable(obj, box)
	return obj
end

function box.getNamespaceId(ns)
	if not ns then return end
	if type(ns) == 'string' then
		ns = lang:ucfirst(mw.ustring.lower(ns))
		if ns == 'Main' then
			ns = 0
		end
	end
	local nsTable = mw.site.namespaces[ns]
	if nsTable then
		return nsTable.id
	end
end

function box.getMboxType(nsid)
	-- Gets the mbox type from a namespace number.
	if nsid == 0 then
		return 'ambox' -- main namespace
	elseif nsid == 6 then
		return 'imbox' -- file namespace
	elseif nsid == 14 then
		return 'cmbox' -- category namespace
	else
		local nsTable = mw.site.namespaces[nsid]
		if nsTable and nsTable.isTalk then
			return 'tmbox' -- any talk namespace
		else
			return 'ombox' -- other namespaces or invalid input
		end
	end
end

function box:addCat(ns, cat, sort)
	if type(cat) ~= 'string' then return end
	local nsVals = {'main', 'template', 'all'}
	local tname
	for i, val in ipairs(nsVals) do
		if ns == val then
			tname = ns .. 'Cats'
		end
	end
	if not tname then
		for i, val in ipairs(nsVals) do
			nsVals[i] = format('"%s"', val)
		end
		error(
			'invalid ns parameter passed to box:addCat; valid values are '
			.. mw.text.listToText(nsVals, nil, ' or ')
		)
	end
	self[tname] = self[tname] or {}
	if type(sort) == 'string' then
		tinsert(self[tname], format('[[Category:%s|%s]]', cat, sort))
	else
		tinsert(self[tname], format('[[Category:%s]]', cat))
	end
end

function box:addClass(class)
	if type(class) ~= 'string' then return end
	self.classes = self.classes or {}
	tinsert(self.classes, class)
end

function box:addAttr(attr, val)
	if type(attr) ~= 'string' or type(val) ~= 'string' then return end
	self.attrs = self.attrs or {}
	tinsert(self.attrs, attr)
end

function box:setTitle(args)
	-- Get the title object and the namespace.
	self.pageTitle = getTitleObject(args.page ~= '' and args.page)
	self.title = self.pageTitle or mw.title.getCurrentTitle()
	self.demospace = args.demospace ~= '' and args.demospace or nil
	self.nsid = box.getNamespaceId(self.demospace) or self.title.namespace
end

function box:getConfig(boxType)
	-- Get the box config data from the data page.
	if boxType == 'mbox' then
		boxType = box.getMboxType(self.nsid)
	end
	local cfg = cfgTables[boxType]
	if not cfg then
		local boxTypes = {}
		for k, v in pairs(dataTables) do
			tinsert(boxTypes, format('"%s"', k))
		end
		tinsert(boxTypes, '"mbox"')
		error(format(
			'invalid message box type "%s"; valid types are %s',
			tostring(boxType),
			mw.text.listToText(boxTypes)
		), 2)
	end
	return cfg
end

function box:removeBlankArgs(cfg, args)
	-- Only allow blank arguments for the parameter names listed in
	-- cfg.allowBlankParams.
	local newArgs = {}
	for k, v in pairs(args) do
		if v ~= '' then
			newArgs[k] = v
		end
	end
	for i, param in ipairs(cfg.allowBlankParams or {}) do
		newArgs[param] = args[param]
	end
	return newArgs
end

function box:setBoxParameters(cfg, args)
	-- Get type data.
	self.type = args.type
	local typeData = cfg.types[self.type]
	self.invalidTypeError = cfg.showInvalidTypeError
		and self.type
		and not typeData
		and true
		or false
	typeData = typeData or cfg.types[cfg.default]
	self.typeClass = typeData.class
	self.typeImage = typeData.image

	-- Find if the box has been wrongly substituted.
	if cfg.substCheck and args.subst == 'SUBST' then
		self.isSubstituted = true
	end

	-- Find whether we are using a small message box.
	if cfg.allowSmall and (
		cfg.smallParam and args.small == cfg.smallParam
		or not cfg.smallParam and yesno(args.small)
	)
	then
		self.isSmall = true
	else
		self.isSmall = false
	end

	-- Add attributes, classes and styles.
	if cfg.allowId then
		self.id = args.id
	end
	self:addClass(
		cfg.usePlainlinksParam and yesno(args.plainlinks or true) and 'plainlinks'
	)
	for _, class in ipairs(cfg.classes or {}) do
		self:addClass(class)
	end
	if self.isSmall then
		self:addClass(cfg.smallClass or 'mbox-small')
	end
	self:addClass(self.typeClass)
	self:addClass(args.class)
	self.style = args.style
	self.attrs = args.attrs

	-- Set text style.
	self.textstyle = args.textstyle

	-- Find if we are on the template page or not. This functionality is only
	-- used if useCollapsibleTextFields is set, or if both cfg.templateCategory
	-- and cfg.templateCategoryRequireName are set.
	self.useCollapsibleTextFields = cfg.useCollapsibleTextFields
	if self.useCollapsibleTextFields
		or cfg.templateCategory
		and cfg.templateCategoryRequireName
	then
		self.name = args.name
		if self.name then
			local templateName = mw.ustring.match(
				self.name,
				'^[tT][eE][mM][pP][lL][aA][tT][eE][%s_]*:[%s_]*(.*)$'
			) or self.name
			templateName = 'Template:' .. templateName
			self.templateTitle = getTitleObject(templateName)
		end
		self.isTemplatePage = self.templateTitle
			and mw.title.equals(self.title, self.templateTitle)
			or false
	end

	-- Process data for collapsible text fields. At the moment these are only
	-- used in {{ambox}}.
	if self.useCollapsibleTextFields then
		-- Get the self.issue value.
		if self.isSmall and args.smalltext then
			self.issue = args.smalltext
		else
			local sect
			if args.sect == '' then
				sect = 'This ' .. (cfg.sectionDefault or 'page')
			elseif type(args.sect) == 'string' then
				sect = 'This ' .. args.sect
			end
			local issue = args.issue
			issue = type(issue) == 'string' and issue ~= '' and issue or nil
			local text = args.text
			text = type(text) == 'string' and text or nil
			local issues = {}
			tinsert(issues, sect)
			tinsert(issues, issue)
			tinsert(issues, text)
			self.issue = tconcat(issues, ' ')
		end

		-- Get the self.talk value.
		local talk = args.talk
		-- Show talk links on the template page or template subpages if the talk
		-- parameter is blank.
		if talk == ''
			and self.templateTitle 
			and (
				mw.title.equals(self.templateTitle, self.title)
				or self.title:isSubpageOf(self.templateTitle)
			)
		then
			talk = '#'
		elseif talk == '' then
			talk = nil
		end
		if talk then
			-- If the talk value is a talk page, make a link to that page. Else
			-- assume that it's a section heading, and make a link to the talk
			-- page of the current page with that section heading.
			local talkTitle = getTitleObject(talk)
			local talkArgIsTalkPage = true
			if not talkTitle or not talkTitle.isTalkPage then
				talkArgIsTalkPage = false
				talkTitle = getTitleObject(
					self.title.text,
					mw.site.namespaces[self.title.namespace].talk.id
				)
			end
			if talkTitle and talkTitle.exists then
				local talkText = 'Relevant discussion may be found on'
				if talkArgIsTalkPage then
					talkText = format(
						'%s [[%s|%s]].',
						talkText,
						talk,
						talkTitle.prefixedText
					)
				else
					talkText = format(
						'%s the [[%s#%s|talk page]].',
						talkText,
						talkTitle.prefixedText,
						talk
					)
				end
				self.talk = talkText
			end
		end

		-- Get other values.
		self.fix = args.fix ~= '' and args.fix or nil
		local date
		if args.date and args.date ~= '' then
			date = args.date
		elseif args.date == '' and self.isTemplatePage then
			date = lang:formatDate('F Y')
		end
		if date then
			self.date = format(" <small>''(%s)''</small>", date)
		end
		self.info = args.info
	end

	-- Set the non-collapsible text field. At the moment this is used by all box
	-- types other than ambox, and also by ambox when small=yes.
	if self.isSmall then
		self.text = args.smalltext or args.text
	else
		self.text = args.text
	end

	-- Set the below row.
	self.below = cfg.below and args.below

	-- General image settings.
	self.imageCellDiv = not self.isSmall and cfg.imageCellDiv and true or false
	self.imageEmptyCell = cfg.imageEmptyCell
	if cfg.imageEmptyCellStyle then
		self.imageEmptyCellStyle = 'border:none;padding:0px;width:1px'
	end

	-- Left image settings.
	local imageLeft = self.isSmall and args.smallimage or args.image
	if cfg.imageCheckBlank and imageLeft ~= 'blank' and imageLeft ~= 'none'
		or not cfg.imageCheckBlank and imageLeft ~= 'none'
	then
		self.imageLeft = imageLeft
		if not imageLeft then
			local imageSize = self.isSmall
				and (cfg.imageSmallSize or '30x30px')
				or '40x40px'
			self.imageLeft = format('[[File:%s|%s|link=|alt=]]', self.typeImage
				or 'Imbox notice.png', imageSize)
		end
	end

	-- Right image settings.
	local imageRight = self.isSmall and args.smallimageright or args.imageright
	if not (cfg.imageRightNone and imageRight == 'none') then
		self.imageRight = imageRight
	end

	-- Add mainspace categories. At the moment these are only used in {{ambox}}.
	if cfg.allowMainspaceCategories then
		if args.cat then
			args.cat1 = args.cat
		end
		self.catNums = getArgNums(args, 'cat')
		if args.category then
			args.category1 = args.category
		end
		self.categoryNums = getArgNums(args, 'category')
		if args.all then
			args.all1 = args.all
		end
		self.allNums = getArgNums(args, 'all')
		self.categoryParamNums = union(self.catNums, self.categoryNums)
		self.categoryParamNums = union(self.categoryParamNums, self.allNums)
		-- The following is roughly equivalent to the old {{Ambox/category}}.
		local date = args.date
		date = type(date) == 'string' and date
		local preposition = 'from'
		for _, num in ipairs(self.categoryParamNums) do
			local mainCat = args['cat' .. tostring(num)]
				or args['category' .. tostring(num)]
			local allCat = args['all' .. tostring(num)]
			mainCat = type(mainCat) == 'string' and mainCat
			allCat = type(allCat) == 'string' and allCat
			if mainCat and date and date ~= '' then
				local catTitle = format('%s %s %s', mainCat, preposition, date)
				self:addCat('main', catTitle)
				catTitle = getTitleObject('Category:' .. catTitle)
				if not catTitle or not catTitle.exists then
					self:addCat(
						'main',
						'Articles with invalid date parameter in template'
					)
				end
			elseif mainCat and (not date or date == '') then
				self:addCat('main', mainCat)
			end
			if allCat then
				self:addCat('main', allCat)
			end
		end
	end

	-- Add template-namespace categories.
	if cfg.templateCategory then
		if cfg.templateCategoryRequireName then
			if self.isTemplatePage then
				self:addCat('template', cfg.templateCategory)
			end
		elseif not self.title.isSubpage then
			self:addCat('template', cfg.templateCategory)
		end
	end

	-- Add template error category.
	if cfg.templateErrorCategory then
		local templateErrorCategory = cfg.templateErrorCategory
		local templateCat, templateSort
		if not self.name and not self.title.isSubpage then
			templateCat = templateErrorCategory
		elseif self.isTemplatePage then
			local paramsToCheck = cfg.templateErrorParamsToCheck or {}
			local count = 0
			for i, param in ipairs(paramsToCheck) do
				if not args[param] then
					count = count + 1
				end
			end
			if count > 0 then
				templateCat = templateErrorCategory
				templateSort = tostring(count)
			end
			if self.categoryNums and #self.categoryNums > 0 then
				templateCat = templateErrorCategory
				templateSort = 'C'
			end
		end
		self:addCat('template', templateCat, templateSort)
	end

	-- Categories for all namespaces.
	if self.invalidTypeError then
		local allSort = (self.nsid == 0 and 'Main:' or '') .. self.title.prefixedText
		self:addCat('all', 'Wikipedia message box parameter needs fixing', allSort)
	end
	if self.isSubstituted then
		self:addCat('all', 'Pages with incorrectly substituted templates')
	end

	-- Convert category tables to strings and pass them through
	-- [[Module:Category handler]].
	self.categories = categoryHandler{
		main = tconcat(self.mainCats or {}),
		template = tconcat(self.templateCats or {}),
		all = tconcat(self.allCats or {}),
		nocat = args.nocat,
		demospace = self.demospace,
		page = self.pageTitle and self.pageTitle.prefixedText or nil
	}
end

function box:export()
	local root = htmlBuilder.create()

	-- Add the subst check error.
	if self.isSubstituted and self.name then
		root
			.tag('b')
				.addClass('error')
				.wikitext(format(
					'Template <code>%s[[Template:%s|%s]]%s</code> has been incorrectly substituted.',
					mw.text.nowiki('{{'), self.name, self.name, mw.text.nowiki('}}')
				))
	end

	-- Create the box table.
	local boxTable = root.tag('table')
	boxTable
		.attr('id', self.id)
	for i, class in ipairs(self.classes or {}) do
		boxTable
			.addClass(class)
	end
	boxTable
		.cssText(self.style)
		.attr('role', 'presentation')
	for attr, val in pairs(self.attrs or {}) do
		boxTable
			.attr(attr, val)
	end

	-- Add the left-hand image.
	local row = boxTable.tag('tr')
	if self.imageLeft then
		local imageLeftCell = row.tag('td').addClass('mbox-image')
		if self.imageCellDiv then
			-- If we are using a div, redefine imageLeftCell so that the image
			-- is inside it. Divs use style="width: 52px;", which limits the
			-- image width to 52px. If any images in a div are wider than that,
			-- they may overlap with the text or cause other display problems.
			imageLeftCell = imageLeftCell.tag('div').css('width', '52px') 
		end
		imageLeftCell
			.wikitext(self.imageLeft)
	elseif self.imageEmptyCell then
		-- Some message boxes define an empty cell if no image is specified, and
		-- some don't. The old template code in templates where empty cells are
		-- specified gives the following hint: "No image. Cell with some width
		-- or padding necessary for text cell to have 100% width."
		row.tag('td')
			.addClass('mbox-empty-cell') 
			.cssText(self.imageEmptyCellStyle)
	end

	-- Add the text.
	local textCell = row.tag('td').addClass('mbox-text')
	if self.useCollapsibleTextFields then
		-- The message box uses advanced text parameters that allow things to be
		-- collapsible. At the moment, only ambox uses this.
		textCell
			.cssText(self.textstyle)
		local textCellSpan = textCell.tag('span')
		textCellSpan
			.addClass('mbox-text-span')
			.wikitext(self.issue)
		if not self.isSmall then
			textCellSpan
				.tag('span')
					.addClass('hide-when-compact')
					.wikitext(self.talk and ' ' .. self.talk)
					.wikitext(self.fix and ' ' .. self.fix)
		end
		textCellSpan
			.wikitext(self.date and ' ' .. self.date)
		if not self.isSmall then
			textCellSpan
				.tag('span')
				.addClass('hide-when-compact')
				.wikitext(self.info and ' ' .. self.info)
		end
	else
		-- Default text formatting - anything goes.
		textCell
			.cssText(self.textstyle)
			.wikitext(self.text)
	end

	-- Add the right-hand image.
	if self.imageRight then
		local imageRightCell = row.tag('td').addClass('mbox-imageright')
		if self.imageCellDiv then
			-- If we are using a div, redefine imageRightCell so that the image
			-- is inside it.
			imageRightCell = imageRightCell.tag('div').css('width', '52px')
		end
		imageRightCell
			.wikitext(self.imageRight)
	end

	-- Add the below row.
	if self.below then
		boxTable.tag('tr')
			.tag('td')
				.attr('colspan', self.imageRight and '3' or '2')
				.addClass('mbox-text')
				.cssText(self.textstyle)
				.wikitext(self.below)
	end

	-- Add error message for invalid type parameters.
	if self.invalidTypeError then
		root
			.tag('div')
				.css('text-align', 'center')
				.wikitext(format(
					'This message box is using an invalid "type=%s" parameter and needs fixing.',
					self.type or ''
				))
	end

	-- Add categories.
	root
		.wikitext(self.categories)

	return tostring(root)
end

local function main(boxType, args)
	local outputBox = box.new()
	outputBox:setTitle(args)
	local cfg = outputBox:getConfig(boxType)
	args = outputBox:removeBlankArgs(cfg, args)
	outputBox:setBoxParameters(cfg, args)
	return outputBox:export()
end

local function makeWrapper(boxType)
	return function (frame)
		local args = getArgs(frame, {trim = false, removeBlanks = false})
		return main(boxType, args)
	end
end

local p = {
	main = main,
	mbox = makeWrapper('mbox')
}

for boxType in pairs(cfgTables) do
	p[boxType] = makeWrapper(boxType)
end

return p