Module:List

-- This module outputs different kinds of lists. At the moment, bulleted, -- unbulleted, horizontal, ordered, and horizontal ordered lists are supported. -- local libUtil = require('libraryUtil') local checkType = libUtil.checkType local mTableTools = {} local infinity = math.huge local floor = math.floor local p = {}

local listTypes = { ['bulleted'] = true, ['unbulleted'] = true, ['horizontal'] = true, ['ordered'] = true, ['horizontal_ordered'] = true }

function mTableTools.isPositiveInteger(v) if type(v) == 'number' and v >= 1 and floor(v) == v and v < infinity then return true else return false end end

function mTableTools.numKeys(t) checkType('numKeys', 1, t, 'table') local isPositiveInteger = mTableTools.isPositiveInteger local nums = {} for k, v in pairs(t) do		if isPositiveInteger(k) then nums[#nums + 1] = k		end end table.sort(nums) return nums end

function p.makeListData(listType, args) -- Constructs a data table to be passed to p.renderList. local data = {}

-- Classes data.classes = {} if listType == 'horizontal' or listType == 'horizontal_ordered' then table.insert(data.classes, 'hlist') elseif listType == 'unbulleted' then table.insert(data.classes, 'plainlist') end table.insert(data.classes, args.class)

-- Main div style data.style = args.style

-- Indent for horizontal lists if listType == 'horizontal' or listType == 'horizontal_ordered' then local indent = tonumber(args.indent) indent = indent and indent * 1.6 or 0 if indent > 0 then data.marginLeft = indent .. 'em' end end -- List style types for ordered lists -- This could be "1, 2, 3", "a, b, c", or a number of others. The list style -- type is either set by the "type" attribute or the "list-style-type" CSS -- property. if listType == 'ordered' or listType == 'horizontal_ordered' then data.listStyleType = args.list_style_type or args['list-style-type'] data.type = args['type']

-- Detect invalid type attributes and attempt to convert them to -- list-style-type CSS properties. if data.type and not data.listStyleType and not tostring(data.type):find('^%s*[1AaIi]%s*$') then data.listStyleType = data.type data.type = nil end end -- List tag type if listType == 'ordered' or listType == 'horizontal_ordered' then data.listTag = 'ol' else data.listTag = 'ul' end

-- Start number for ordered lists data.start = args.start if listType == 'horizontal_ordered' then -- Apply fix to get start numbers working with horizontal ordered lists. local startNum = tonumber(data.start) if startNum then data.counterReset = 'listitem ' .. tostring(startNum - 1) end end

-- List style -- ul_style and ol_style are included for backwards compatibility. No -- distinction is made for ordered or unordered lists. data.listStyle = args.list_style

-- List items -- li_style is included for backwards compatibility. item_style was included -- to be easier to understand for non-coders. data.itemStyle = args.item_style or args.li_style data.items = {} for i, num in ipairs(mTableTools.numKeys(args)) do		local item = {} item.content = args[num] item.style = args['item' .. tostring(num) .. '_style'] or args['item_style' .. tostring(num)] item.value = args['item' .. tostring(num) .. '_value'] or args['item_value' .. tostring(num)] table.insert(data.items, item) end return data end

function p.renderList(data) -- Renders the list HTML. -- Return the blank string if there are no list items. if type(data.items) ~= 'table' or #data.items < 1 then return '' end -- Render the main div tag. local root = mw.html.create('div') for i, class in ipairs(data.classes or {}) do		root:addClass(class) end root:css{['margin-left'] = data.marginLeft} if data.style then root:cssText(data.style) end

-- Render the list tag. local list = root:tag(data.listTag or 'ul') list :attr{start = data.start, type = data.type} :css{ ['counter-reset'] = data.counterReset, ['list-style-type'] = data.listStyleType }	if data.listStyle then list:cssText(data.listStyle) end

-- Render the list items for i, t in ipairs(data.items or {}) do		local item = list:tag('li') if data.itemStyle then item:cssText(data.itemStyle) end if t.style then item:cssText(t.style) end item :attr{value = t.value} :wikitext(t.content) end

return tostring(root) end

function p.renderTrackingCategories(args) local isDeprecated = false -- Tracks deprecated parameters. for k, v in pairs(args) do		k = tostring(k) if k:find('^item_style%d+$') or k:find('^item_value%d+$') then isDeprecated = true break end end local ret = '' if isDeprecated then ret = ret .. ''	end return ret end

function p.makeList(listType, args) if not listType or not listTypes[listType] then error(string.format( "bad argument #1 to 'makeList' ('%s' is not a valid list type)", tostring(listType) ), 2)	end checkType('makeList', 2, args, 'table') local data = p.makeListData(listType, args) local list = p.renderList(data) local trackingCategories = p.renderTrackingCategories(args) return list .. trackingCategories end

for listType in pairs(listTypes) do	p[listType] = function (frame) local mArguments = require('Dev:Arguments') local origArgs = mArguments.getArgs(frame) -- Copy all the arguments to a new table, for faster indexing. local args = {} for k, v in pairs(origArgs) do			args[k] = v		end return p.makeList(listType, args) end end

return p