Module:Toolbar

local p = {}

-- Get the keys of the numerical arguments that are present. local function getArgNums(args)

   local nums = {}
   local tinsert = table.insert
   for k, v in pairs(args) do
       if type(k) == 'number' then
           tinsert(nums, k)
       end
   end
   table.sort(nums)
   return nums

end

local function makeToolbarItems(args)

   -- Get numerical argument keys.
   local nums = getArgNums(args)
   -- Get the separator text.
   local sep = (args.separator or 'pipe') .. '-separator'
   sep = mw.message.new(sep):plain()
   
   -- Generate the toolbar items.
   local ret = {}
   local tinsert = table.insert
   for i, v in ipairs(nums) do
   	tinsert(ret, args[v])
   end
   return table.concat(ret, sep)

end

local function makeToolbar(args)

   return mw.ustring.format(
   	'(%s)',
   	type(args.class) == 'string' and ' ' .. args.class or ,
   	type(args.style) == 'string' and mw.ustring.format(' style="%s"', args.style) or ,
   	makeToolbarItems(args)
   )

end

function p.main(frame)

   -- If called via #invoke, use the args passed into the invoking template.
   -- Otherwise, for testing purposes, assume args are being passed directly in.
   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
   
   -- Strip whitespace and remove nil values
   local args = {}
   for k, v in pairs(origArgs) do
   	if type(v) == 'string' then
   		v = mw.text.trim(v)
   	end
       if v ~=  then
           args[k] = v
       end
   end
   
   return makeToolbar(args)

end

return p