# Module:Navbox with collapsible groups

-- This module implements
local q = {}
local Navbox = require('Module:Navbox')  
-- helper functions
local function concatstrings(s)
local r = table.concat(s, '')
if r:match('^%s*$') then r = nil end
return r
end  
local function concatstyles(s)
local r = table.concat(s, ';')
while r:match(';%s*;') do
r = mw.ustring.gsub(r, ';%s*;', ';')
end
if r:match('^%s*;%s*$') then r = nil end
return r
end  
function q._navbox(pargs)
-- table for args passed to navbox
local targs = {}  
-- process args
local passthrough = {
['name']=true,['navbar']=true,['state']=true,['']=true,
['bodyclass']=true,['groupclass']=true,['listclass']=true,
['style']=true,['bodystyle']=true,['basestyle']=true,
['title']=true,['titleclass']=true,['titlestyle']=true,
['above']=true,['aboveclass']=true,['abovestyle']=true,
['below']=true,['belowclass']=true,['belowstyle']=true,
['image']=true,['imageclass']=true,['imagestyle']=true,
['imageleft']=true,['imageleftstyle']=true
}
for k,v in pairs(pargs) do
if k and type(k) == 'string' then
if passthrough[k] then
targs[k] = v
elseif (k:match('^list[0-9][0-9]*$')
or k:match('^content[0-9][0-9]*$') ) then
local n = mw.ustring.gsub(k, '^[a-z]*([0-9]*)$', '%1')
if (targs['list' .. n] == nil and pargs['group' .. n] == nil
and pargs['sect' .. n] == nil and pargs['section' .. n] == nil) then
targs['list' .. n] = concatstrings(
{pargs['list' .. n] or *, pargs['content' .. n] or *})
end
elseif (k:match('^group[0-9][0-9]*$')
or k:match('^sect[0-9][0-9]*$')
or k:match('^section[0-9][0-9]*$') ) then
local n = mw.ustring.gsub(k, '^[a-z]*([0-9]*)$', '%1')
if targs['list' .. n] == nil then
local titlestyle = concatstyles(
{pargs['groupstyle'] or *,pargs['secttitlestyle'] or *,
pargs['group' .. n .. 'style'] or '',
pargs['section' .. n ..'titlestyle'] or ''})
local liststyle = concatstyles(
{pargs['liststyle'] or *, pargs['contentstyle'] or *,
pargs['list' .. n .. 'style'] or '',
pargs['content' .. n .. 'style'] or ''})
local title = concatstrings(
{pargs['group' .. n] or '',
pargs['sect' .. n] or '',
pargs['section' .. n] or ''})
local list = concatstrings(
{pargs['list' .. n] or '',
pargs['content' .. n] or ''})
local state = (pargs['abbr' .. n] and pargs['abbr' .. n] == pargs['selected'])
and 'uncollapsed' or pargs['state' .. n] or 'collapsed'  
targs['list' .. n] = Navbox._navbox(
{'child', navbar = 'plain', state = state,
basestyle = pargs['basestyle'],
title = title, titlestyle = titlestyle,
list1 = list, liststyle = liststyle,
listclass = pargs['list' .. n .. 'class'],
image = pargs['image' .. n],
imageleft = pargs['imageleft' .. n],
listpadding = pargs['listpadding']})
end
end
end
end
-- ordering of style and bodystyle
targs['style'] = concatstyles({targs['style'] or *, targs['bodystyle'] or *})
targs['bodystyle'] = nil  
-- child or subgroup
if targs[*] == nil then targs[*] = pargs[1] end  
return Navbox._navbox(targs)
end  
function q.navbox
local pargs = require('Module:Arguments').getArgs(, {wrappers = {'Template:Navbox with collapsible groups'}})  
-- Read the arguments in the order they'll be output in, to make references number in the order.
local _
_ = pargs.title
_ = pargs.above
for i = 1, 20 do
_ = pargs["group" .. tostring(i)]
_ = pargs["list" .. tostring(i)]
end
_ = pargs.below  
return q._navbox(pargs)
end  
return q