# Module:List

local libUtil = require('libraryUtil')
local checkType = libUtil.checkType
local mTableTools = require('Module:TableTools')  
local p = {}  
local listTypes = {
['bulleted'] = true,
['unbulleted'] = true,
['horizontal'] = true,
['ordered'] = true,
['horizontal_ordered'] = true
}  
function p.makeListData(listType, args)
-- Constructs a data table to be passed to p.renderList.
local data = {}  
-- Classes and TemplateStyles
data.classes = {}
data.templatestyles = ''
if listType == 'horizontal' or listType == 'horizontal_ordered' then
table.insert(data.classes, 'hlist')
data.templatestyles = mw.getCurrentFrame:extensionTag{
name = 'templatestyles', args = { src = 'Hlist/styles.css' }
}
elseif listType == 'unbulleted' then
table.insert(data.classes, 'plainlist')
data.templatestyles = mw.getCurrentFrame:extensionTag{
name = 'templatestyles', args = { src = 'Plainlist/styles.css' }
}
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 _, 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 _, class in ipairs(data.classes or {}) do
root:addClass(class)
end
root:css{['margin-'] = 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 _, 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 data.templatestyles .. 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+$') then
isDeprecated = true
break
end
end
local ret = ''
if isDeprecated then
ret = ret .. ''
end
return ret
end  
function p.makeList(listType, args)
if not listType or not listTypes[listType] then
error(string.format(
"bad argument #1 to 'makeList' ('%s' is not a valid list type)",
tostring(listType)
), 2)
end
checkType('makeList', 2, args, 'table')
local data = p.makeListData(listType, args)
local list = p.renderList(data)
local trackingCategories = p.renderTrackingCategories(args)
return list .. trackingCategories
end  
for listType in pairs(listTypes) do
p[listType] = function
local mArguments = require('Module:Arguments')
local origArgs = mArguments.getArgs(, {
frameOnly = (( and .args and .args.frameonly or *) ~= *),
valueFunc = function (key, value)
if not value or not mw.ustring.find(value, '%S') then return nil end
if mw.ustring.find(value, '^%s*[%*#;:]') then
return value
else
return value:match('^%s*(.-)%s*$')
end
return nil
end
})
-- 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