Module:Message box

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

-- Adapted from https://www.mediawiki.org/w/index.php?title=Module:Message_box&oldid=2059839

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

-- Load necessary modules.
require('Module:No globals')
local getArgs
local yesno = require('Module:Yesno')

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

local function getTitleObject(...)
	-- 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, ...)
	if success then
		return title
	end
end

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

local MessageBox = {}
MessageBox.__index = MessageBox

function MessageBox.new(boxType, args, cfg)
	args = args or {}
	local obj = {}

	-- Set the title object and the namespace.
	obj.title = getTitleObject(args.page) or mw.title.getCurrentTitle()

	-- Set the config for our box type.
	obj.cfg = cfg[boxType]
	if not obj.cfg then
		local ns = obj.title.namespace
		-- boxType is "mbox" or invalid input
		if ns == 0 then
			obj.cfg = cfg.ambox -- main namespace
		elseif ns == 6 then
			obj.cfg = cfg.imbox -- file namespace
		elseif ns == 14 then
			obj.cfg = cfg.cmbox -- category namespace
		else
			local nsTable = mw.site.namespaces[ns]
			if nsTable and nsTable.isTalk then
				obj.cfg = cfg.tmbox -- any talk namespace
			else
				obj.cfg = cfg.ombox -- other namespaces or invalid input
			end
		end
	end

	-- Set the arguments
	obj.args = args

	-- Define internal data structure.
	obj.categories = {}
	obj.classes = {}

	return setmetatable(obj, MessageBox)
end

function MessageBox:addClass(class)
	if not class then
		return nil
	end
	table.insert(self.classes, class)
end

function MessageBox:setParameters()
	local args = self.args
	local cfg = self.cfg

	-- Get type data.
	self.type = args.type
	local typeData = cfg.types[self.type]
	self.invalidTypeError = cfg.showInvalidTypeError
		and self.type
		and not typeData
	typeData = typeData or cfg.types[cfg.default]
	self.typeClass = typeData.class
	self.typeImage = typeData.image

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

	-- Add attributes, classes and styles.
	self.id = args.id
	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

	-- 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

	-- 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 = string.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
end

function MessageBox:export()
	local root = mw.html.create()

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

	if self.attrs then
		boxDiv:attr(self.attrs)
	end

	-- Add the left-hand image.
	if self.imageLeft then
		local imageLeftDiv = boxDiv:tag('div'):addClass('mbox-image')
		imageLeftDiv
			:wikitext(self.imageLeft or nil)
	end

	-- Add the text.
	local textDiv = boxDiv:tag('div'):addClass('mbox-text')
	-- Default text formatting - anything goes.
	textDiv:newline()
		:cssText(self.textstyle or nil)
		:wikitext(self.text or nil)
		:newline()

	-- Add the right-hand image.
	if self.imageRight then
		local imageRightDiv = boxDiv:tag('div'):addClass('mbox-imageright')
		imageRightDiv
			:wikitext(self.imageRight or nil)
	end
	
	-- Add error message for invalid type parameters.
	if self.invalidTypeError then
		root:tag('div')
			:css('text-align', 'center')
			:wikitext(string.format(
				'This message box is using an invalid "type=%s" parameter and needs fixing.',
				self.type or ''
			))
	end
	
	local templateStyle = mw.getCurrentFrame():extensionTag( 'templatestyles', '', { src = 'Template:Mbox/styles.css' } );

	return templateStyle .. tostring(root)
end

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

local p, mt = {}, {}

function p._exportClasses()
	-- For testing.
	return {
		MessageBox = MessageBox
	}
end

function p.main(boxType, args, cfgTables)
	local box = MessageBox.new(boxType, args, cfgTables or mw.loadData('Module:Message box/configuration'))
	box:setParameters()
	return box:export()
end

function mt.__index(t, k)
	return function (frame)
		if not getArgs then
			getArgs = require('Module:Arguments').getArgs
		end
		return t.main(k, getArgs(frame, {trim = false, removeBlanks = false}))
	end
end

return setmetatable(p, mt)