:Navbox

-- -- This module will implement {{#invoke:Navbox|navbox}} --

local p = {}

local HtmlBuilder = require('Module:HtmlBuilder') local navbar = require('Module:Navbar')._navbar local getArgs -- lazily initialized

local args local tableRowAdded = false local border local listnums = {}

local function trim(s)

   return (mw.ustring.gsub(s, "^%s*(.-)%s*$", "%1"))

end

local function addNewline(s)

   if s:match('^[*:;#]') or s:match('^{|') then
       return '\n' .. s ..'\n'
   else
       return s
   end

end

local function addTableRow(tbl)

   -- If any other rows have already been added, then we add a 2px gutter row.
   if tableRowAdded then
       tbl
           .tag('tr')
               .css('height', '2px')
               .tag('td')
               	.attr('colspan',2)
   end
   
   tableRowAdded = true
   
   return tbl.tag('tr')

end

local function renderNavBar(titleCell)

   -- Depending on the presence of the navbar and/or show/hide link, we may need to add a spacer div on the left
   -- or right to keep the title centered.
   local spacerSide = nil

   if args.navbar == 'off' then
       -- No navbar, and client wants no spacer, i.e. wants the title to be shifted to the left. If there's
       -- also no show/hide link, then we need a spacer on the right to achieve the left shift.
       if args.state == 'plain' then spacerSide = 'right' end
   elseif args.navbar == 'plain' or (not args.name and mw.getCurrentFrame():getParent():getTitle() == 'Template:Navbox' and (border == 'subgroup' or border == 'child' or border == 'none')) then
       -- No navbar. Need a spacer on the left to balance out the width of the show/hide link.
       if args.state ~= 'plain' then spacerSide = 'left' end
   else
       -- Will render navbar (or error message). If there's no show/hide link, need a spacer on the right
       -- to balance out the width of the navbar.
       if args.state == 'plain' then spacerSide = 'right' end

       titleCell.wikitext(navbar{ 
           args.name, 
           mini = 1, 
           fontstyle = (args.basestyle or ) .. ';' .. (args.titlestyle or ) ..  ';background:none transparent;border:none;'
       })
   end
   
   -- Render the spacer div.
   if spacerSide then
       titleCell
           .tag('span')
               .css('float', spacerSide)
               .css('width', '6em')
               .wikitext(' ')
   end

end

-- -- Title row -- local function renderTitleRow(tbl)

   if not args.title then return end

   local titleRow = addTableRow(tbl)
    
   if args.titlegroup then
       titleRow
           .tag('th')
               .attr('scope', 'row')
               .addClass('navbox-group')
               .addClass(args.titlegroupclass)
               .cssText(args.basestyle)
               .cssText(args.groupstyle)
               .cssText(args.titlegroupstyle)
               .wikitext(args.titlegroup)
   end
   
   local titleCell = titleRow.tag('th').attr('scope', 'col')
           
   if args.titlegroup then
       titleCell
           .css('border-left', '2px solid #fdfdfd')
           .css('width', '100%')
   end
   
   local titleColspan = 2
   if args.imageleft then titleColspan = titleColspan + 1 end
   if args.image then titleColspan = titleColspan + 1 end
   if args.titlegroup then titleColspan = titleColspan - 1 end
   
   titleCell
       .cssText(args.basestyle)
       .cssText(args.titlestyle)
       .addClass('navbox-title')
       .attr('colspan', titleColspan)

   renderNavBar(titleCell)

   titleCell
        .tag('div')
            .addClass(args.titleclass)
            .css('font-size', '110%')
            .wikitext(addNewline(args.title))

end

-- -- Above/Below rows --

local function getAboveBelowColspan()

   local ret = 2
   if args.imageleft then ret = ret + 1 end
   if args.image then ret = ret + 1 end
   return ret

end

local function renderAboveRow(tbl)

   if not args.above then return end

   addTableRow(tbl)
       .tag('td')
           .addClass('navbox-abovebelow')
           .addClass(args.aboveclass)
           .cssText(args.basestyle)
           .cssText(args.abovestyle)
           .attr('colspan', getAboveBelowColspan())
           .tag('div')
               .wikitext(addNewline(args.above))

end

local function renderBelowRow(tbl)

   if not args.below then return end

   addTableRow(tbl)
       .tag('td')
           .addClass('navbox-abovebelow')
           .addClass(args.belowclass)
           .cssText(args.basestyle)
           .cssText(args.belowstyle)
           .attr('colspan', getAboveBelowColspan())
           .tag('div')
               .wikitext(addNewline(args.below))

end

-- -- List rows -- local function renderListRow(tbl, listnum)

   local row = addTableRow(tbl)
   
   if listnum == 1 and args.imageleft then
       row
           .tag('td')
               .addClass('navbox-image')
               .addClass(args.imageclass)
               .css('width', '0%')
               .css('padding', '0px 2px 0px 0px')
               .cssText(args.imageleftstyle)
               .attr('rowspan', 2 * #listnums - 1)
               .tag('div')
                   .wikitext(addNewline(args.imageleft))
   end

   if args['group' .. listnum] then
       local groupCell = row.tag('th')
       
       groupCell
              .attr('scope', 'row')
              .addClass('navbox-group')
              .addClass(args.groupclass)
              .cssText(args.basestyle)
              
       if args.groupwidth then
           groupCell.css('width', args.groupwidth)
       end
          
       groupCell
           .cssText(args.groupstyle)
           .cssText(args['group' .. listnum .. 'style'])
           .wikitext(args['group' .. listnum])
   end
   
   local listCell = row.tag('td')

   if args['group' .. listnum] then
       listCell
           .css('text-align', 'left')
           .css('border-left-width', '2px')
           .css('border-left-style', 'solid')
   else
       listCell.attr('colspan', 2)
   end
   
   if not args.groupwidth then 
       listCell.css('width', '100%')
   end
   
   local isOdd = (listnum % 2) == 1
   local rowstyle = args.evenstyle
   if isOdd then rowstyle = args.oddstyle end

   local evenOdd
   if args.evenodd == 'swap' then
       if isOdd then evenOdd = 'even' else evenOdd = 'odd' end
   else
       if isOdd then evenOdd = args.evenodd or 'odd' else evenOdd = args.evenodd or 'even' end
   end

   listCell
       .css('padding', '0px')
       .cssText(args.liststyle)
       .cssText(rowstyle)
       .cssText(args['list' .. listnum .. 'style'])
       .addClass('navbox-list')
       .addClass('navbox-' .. evenOdd)
       .addClass(args.listclass)
       .tag('div')
           .css('padding', (listnum == 1 and args.list1padding) or args.listpadding or '0em 0.25em')
           .wikitext(addNewline(args['list' .. listnum]))

   if listnum == 1 and args.image then
       row
           .tag('td')
               .addClass('navbox-image')
               .addClass(args.imageclass)
               .css('width', '0%')
               .css('padding', '0px 0px 0px 2px')
               .cssText(args.imagestyle)
               .attr('rowspan', 2 * #listnums - 1)
               .tag('div')
                   .wikitext(addNewline(args.image))
   end

end

-- -- Tracking categories --

local function needsHorizontalLists()

   if border == 'child' or border == 'subgroup'  or args.tracking == 'no' then return false end
   
   local listClasses = {'plainlist', 'hlist', 'hlist hnum', 'hlist hwrap', 'hlist vcard', 'vcard hlist', 'hlist vevent'}
   for i, cls in ipairs(listClasses) do
       if args.listclass == cls or args.bodyclass == cls then
           return false
       end
   end

   return true

end

local function hasBackgroundColors()

   return mw.ustring.match(args.titlestyle or ,'background') or mw.ustring.match(args.groupstyle or ,'background') or mw.ustring.match(args.basestyle or ,'background')

end

local function getTrackingCategories()

   local cats = {}
   if needsHorizontalLists() then table.insert(cats, 'Navigational boxes without horizontal lists') end
   if hasBackgroundColors() then table.insert(cats, 'Navboxes using background colours') end
   return cats

end

local function renderTrackingCategories(builder)

   local title = mw.title.getCurrentTitle()
   if title.namespace ~= 10 then return end -- not in template space
   local subpage = title.subpageText
   if subpage == 'doc' or subpage == 'sandbox' or subpage == 'testcases' then return end
   
   for i, cat in ipairs(getTrackingCategories()) do
       builder.wikitext() 
   end

end

-- -- Main navbox tables -- local function renderMainTable()

   local tbl = HtmlBuilder.create('table')
       .attr('cellspacing', 0)
       .addClass('nowraplinks')
       .addClass(args.bodyclass)
            
   if args.title and (args.state ~= 'plain' and args.state ~= 'off') then
       tbl
           .addClass('collapsible')
           .addClass(args.state or 'autocollapse')
   end

   tbl.css('border-spacing', 0)
   if border == 'subgroup' or border == 'child' or border == 'none' then
       tbl
           .addClass('navbox-subgroup')
           .cssText(args.bodystyle)
           .cssText(args.style)
   else -- regular navobx - bodystyle and style will be applied to the wrapper table
       tbl
           .addClass('navbox-inner')
           .css('background', 'transparent')
           .css('color', 'inherit')
   end
   tbl.cssText(args.innerstyle)

   renderTitleRow(tbl)
   renderAboveRow(tbl)
   for i, listnum in ipairs(listnums) do
       renderListRow(tbl, listnum) 
   end
   renderBelowRow(tbl)
   
   return tbl

end

function p._navbox(navboxArgs)

   args = navboxArgs
   
   for k, v in pairs(args) do
       local listnum = ( .. k):match('^list(%d+)$')
       if listnum then table.insert(listnums, tonumber(listnum)) end
   end
   table.sort(listnums)

   border = trim(args.border or args[1] or )

   -- render the main body of the navbox
   local tbl = renderMainTable()

   -- render the appropriate wrapper around the navbox, depending on the border param
   local res = HtmlBuilder.create()
   if border == 'none' then
       res.node(tbl)
   elseif border == 'subgroup' or border == 'child' then
       -- We assume that this navbox is being rendered in a list cell of a parent navbox, and is
       -- therefore inside a div with padding:0em 0.25em. We start with a </div> to avoid the

-- padding being applied, and at the end add a

to balance out the parent's

       res
           .tag('/div', {unclosed = true})
               .done()
           .node(tbl)
           .tag('div', {unclosed = true})
   else
       res
           .tag('table')
               .attr('cellspacing', 0)
               .addClass('navbox')
               .css('border-spacing', 0)
               .cssText(args.bodystyle)
               .cssText(args.style)
               .tag('tr')
                   .tag('td')
                       .css('padding', '2px')
                       .node(tbl)
   end

   renderTrackingCategories(res)

   return tostring(res)

end

function p.navbox(frame)

   if not getArgs then
   	getArgs = require('Module:Arguments').getArgs
   end
   args = getArgs(frame, {wrappers = 'Template:Navbox'})

   -- Read the arguments in the order they'll be output in, to make references number in the right order.
   local _
   _ = args.title
   _ = args.above
   for i = 1, 20 do
       _ = args["group" .. tostring(i)]
       _ = args["list" .. tostring(i)]
   end    
   _ = args.below

   return p._navbox(args)

end

return p