Module:Collapsible list explained

local p =

local function getListItem(data) if not type(data)

'string' then return end return mw.ustring.format('

%s

', data)end

-- Returns an array containing the keys of all positional arguments-- that contain data (i.e. non-whitespace values).local function getArgNums(args) local nums = for k, v in pairs(args) do if type(k)

'number' and k >= 1 and math.floor(k)

k and type(v)

'string' and mw.ustring.match(v, '%S') then table.insert(nums, k) end end table.sort(nums) return numsend

-- Formats a list of classes, styles or other attributes.local function formatAttributes(attrType, ...) local attributes = local nums = getArgNums(attributes) local t = for i, num in ipairs(nums) do table.insert(t, attributes[num ]) end if #t

0 then return -- Return the blank string so concatenation will work. end return mw.ustring.format(' %s="%s"', attrType, table.concat(t, ' '))end

-- TODO: use Module:List. Since the update for this comment is routine,-- this is blocked without a consensus discussion by-- -- if we decide hlist in plainlist in this template isn't an issue, we can use-- module:list directly-- https://en.wikipedia.org/w/index.php?title=Module:Collapsible_list/sandbox&oldid=1130172480-- is an implementation (that will code rot slightly I expect)local function buildList(args) -- Get the list items. local listItems = local argNums = getArgNums(args) for i, num in ipairs(argNums) do table.insert(listItems, getListItem(args[num ])) end if #listItems

0 then return end listItems = table.concat(listItems)

-- hack around mw-collapsible show/hide jumpiness by looking for text-alignment -- by setting a margin if centered local textAlignmentCentered = 'text%-align%s*:%s*center' local centeredTitle = (args.title_style and args.title_style:lower:match(textAlignmentCentered) or args.titlestyle and args.titlestyle:lower:match(textAlignmentCentered)) local centeredTitleSpacing if centeredTitle then centeredTitleSpacing = 'margin: 0 4em' else centeredTitleSpacing = end

-- Get class, style and title data. local collapsibleContainerClass = formatAttributes('class', 'collapsible-list', 'mw-collapsible', not args.expand and 'mw-collapsed') local collapsibleContainerStyle = formatAttributes('style', -- mostly work around .infobox-full-data defaulting to centered 'text-align: left;', args.frame_style, args.framestyle) local collapsibleTitleStyle = formatAttributes('style', 'line-height: 1.6em; font-weight: bold;', args.title_style, args.titlestyle) local jumpyTitleStyle = formatAttributes('style', centeredTitleSpacing) local title = args.title or 'List' local ulclass = formatAttributes('class', 'mw-collapsible-content', args.hlist and 'hlist') local ulstyle = formatAttributes('style', 'margin-top: 0; margin-bottom: 0; line-height: inherit;', not args.bullets and 'list-style: none; margin-left: 0;', args.list_style, args.liststyle) local hlist_templatestyles = if args.hlist then hlist_templatestyles = mw.getCurrentFrame:extensionTag end -- Build the list. return mw.ustring.format('%s

\n

%s

\n%s\n

', hlist_templatestyles, collapsibleContainerClass, collapsibleContainerStyle, collapsibleTitleStyle, jumpyTitleStyle, title, ulclass, ulstyle, listItems)end

function p.main(frame) local origArgs if frame

mw.getCurrentFrame then origArgs = frame:getParent.args for k, v in pairs(frame.args) do origArgs = frame.args break end else origArgs = frame end local args = for k, v in pairs(origArgs) do if type(k)

'number' or v ~= then args[k ] = v end end return buildList(args)end

return p