Module:Collapsible list

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 nums end

-- 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 -- MediaWiki_talk:Common.css/Archive_15 -- if we decide hlist in plainlist in this template isn't an issue, we can use -- module:list directly -- -- 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{ name = 'templatestyles', args = { src = 'Hlist/styles.css' } }   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