Difference between revisions of "Module:Navbox"

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imported>Toohool
(Created page with '-- -- This module will implement {{Navbox}} -- local p = {} local gutterRow = '<tr style="height:2px;"><td></td></tr>' local ret = {} function add(...) fo...')
 
m (1 revision imported)
 
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--
 
--
-- This module will implement {{Navbox}}
+
-- This module implements {{Navbox}}
 
--
 
--
  
 
local p = {}
 
local p = {}
  
local gutterRow = '<tr style="height:2px;"><td></td></tr>'
+
local navbar = require('Module:Navbar')._navbar
 +
local getArgs -- lazily initialized
  
local ret = {}
+
local args
function add(...)
+
local border
    for i, s in ipairs({...}) do
+
local listnums
        if s then
+
local ODD_EVEN_MARKER = '\127_ODDEVEN_\127'
            table.insert(ret, s)
+
local RESTART_MARKER = '\127_ODDEVEN0_\127'
        end
+
local REGEX_MARKER = '\127_ODDEVEN(%d?)_\127'
    end
+
 
 +
local function striped(wikitext)
 +
-- Return wikitext with markers replaced for odd/even striping.
 +
-- Child (subgroup) navboxes are flagged with a category that is removed
 +
-- by parent navboxes. The result is that the category shows all pages
 +
-- where a child navbox is not contained in a parent navbox.
 +
local orphanCat = '[[Category:Navbox orphans]]'
 +
if border == 'subgroup' and args.orphan ~= 'yes' then
 +
-- No change; striping occurs in outermost navbox.
 +
return wikitext .. orphanCat
 +
end
 +
local first, second = 'odd', 'even'
 +
if args.evenodd then
 +
if args.evenodd == 'swap' then
 +
first, second = second, first
 +
else
 +
first = args.evenodd
 +
second = first
 +
end
 +
end
 +
local changer
 +
if first == second then
 +
changer = first
 +
else
 +
local index = 0
 +
changer = function (code)
 +
if code == '0' then
 +
-- Current occurrence is for a group before a nested table.
 +
-- Set it to first as a valid although pointless class.
 +
-- The next occurrence will be the first row after a title
 +
-- in a subgroup and will also be first.
 +
index = 0
 +
return first
 +
end
 +
index = index + 1
 +
return index % 2 == 1 and first or second
 +
end
 +
end
 +
local regex = orphanCat:gsub('([%[%]])', '%%%1')
 +
return (wikitext:gsub(regex, ''):gsub(REGEX_MARKER, changer))  -- () omits gsub count
 
end
 
end
  
function renderList(args, listnum)
+
local function processItem(item, nowrapitems)
    if args.title or args.above or args.list1 then
+
if item:sub(1, 2) == '{|' then
        add(gutterRow)
+
-- Applying nowrap to lines in a table does not make sense.
    end
+
-- Add newlines to compensate for trim of x in |parm=x in a template.
    add('<tr>')
+
return '\n' .. item ..'\n'
    if args['group' .. listnum] then
+
end
        add('<th scope="row" class="navbox-group ', args.groupclass, '" style="', args.basestyle, ';')
+
if nowrapitems == 'yes' then
        if args.groupwidth then add('width:', args.groupwidth, ';') end
+
local lines = {}
        add(args.groupstyle, ';', args['group' .. listnum .. 'style'], '">')
+
for line in (item .. '\n'):gmatch('([^\n]*)\n') do
        add(args['group' .. listnum])
+
local prefix, content = line:match('^([*:;#]+)%s*(.*)')
        add('</th><td style="text-align:left;border-left-width:2px;border-left-style:solid;')
+
if prefix and not content:match('^<span class="nowrap">') then
    else
+
line = prefix .. '<span class="nowrap">' .. content .. '</span>'
        add('<td colspan=2 style="')
+
end
    end
+
table.insert(lines, line)
    if not args.groupwidth then add('width:100%;') end
+
end
   
+
item = table.concat(lines, '\n')
    local isOdd = (listnum % 2) == 1
+
end
    local rowstyle = args.evenstyle
+
if item:match('^[*:;#]') then
    if isOdd then rowstyle = args.oddstyle end
+
return '\n' .. item ..'\n'
       
+
end
    add('padding:0px;', args.liststyle, ';', rowstyle, ';', args['list' .. listnum .. 'style'], '" ')
+
return item
    add('class="navbox-list navbox-')
 
    if args.evenodd == 'swap' then
 
        if isOdd then add('even') else add('odd') end
 
    else
 
        if isOdd then add(args.evenodd or 'odd') else add(args.evenodd or 'even') end
 
    end
 
    add(' ', args.listclass, '">')
 
   
 
    add('<div style="padding:', args.listpadding or '0em 0.25em', '">', args['list' .. listnum], '</div></td></tr>')
 
 
end
 
end
  
function p._navbox(args)
+
local function renderNavBar(titleCell)
    local listnums = {}
+
 
    for k, v in pairs(args) do
+
if args.navbar ~= 'off' and args.navbar ~= 'plain' and not (not args.name and mw.getCurrentFrame():getParent():getTitle():gsub('/sandbox$', '') == 'Template:Navbox') then
        local listnum = k:match('^list(%d+)$')
+
titleCell:wikitext(navbar{
        if listnum then table.insert(listnums, tonumber(listnum)) end
+
args.name,
    end
+
mini = 1,
    table.sort(listnums)
+
fontstyle = (args.basestyle or '') .. ';' .. (args.titlestyle or '') .. ';background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;'
   
+
})
    local border = args.border or args[1]
+
end
    if border == 'subgroup' or border == 'child' then
+
 
        add('</div>')
+
end
    elseif border ~= 'none' then
+
 
        add('<table cellspacing="0" class="navbox" style="border-spacing:0;', args.bodystyle, ';', args.style, '"><tr><td style="padding:2px;">')
+
--
    end
+
--  Title row
   
+
--
    add('<table cellspacing="0" class="nowraplinks ', args.bodyclass, ' ')
+
local function renderTitleRow(tbl)
   
+
if not args.title then return end
    if args.title and (args.state ~= 'plain' and args.state ~= 'off') then
+
 
        add('collapsible ', args.state or 'autocollapse', ' ')
+
local titleRow = tbl:tag('tr')
    end
+
 
   
+
if args.titlegroup then
    if border == 'subgroup' or border == 'child' or border == 'none' then
+
titleRow
        add('navbox-subgroup" style="border-spacing:0;', args.bodystyle, ';', args.style)
+
:tag('th')
    else
+
:attr('scope', 'row')
        add('navbox-inner" style="border-spacing:0;background:transparent;color:inherit')
+
:addClass('navbox-group')
    end
+
:addClass(args.titlegroupclass)
    add(';', args.innerstyle, ';">')
+
:cssText(args.basestyle)
   
+
:cssText(args.groupstyle)
    if args.title then
+
:cssText(args.titlegroupstyle)
        if args.titlegroup then
+
:wikitext(args.titlegroup)
            add('<th scope="row" class="navbox-group ', args.titlegroupclass, '" style="', args.basestyle, ';', args.groupstyle, ';', args.titlegroupstyle, '">', args.titlegroup, '</th><th scope="col" style="border-left:2px solid #fdfdfd;width:100%;')
+
end
        else
 
            add('<th scope="col" style="')
 
        end
 
        local colspan = 2
 
        if args.imageleft then colspan = colspan + 1 end
 
        if args.image then colspan = colspan + 1 end
 
        if args.titlegroup then colspan = colspan - 1 end
 
        add(args.basestyle, ';', args.titlestyle, '" class="navbox-title" colspan=', colspan, '>')
 
   
 
        local stateLinkPlaceholder = '<span style="float:right;width:6em;">&nbsp;</span>'
 
        if args.navbar == 'plain' or args.navbar == 'off' or (not args.name and (border == 'subgroup' or border == 'child' or border == 'none')) then
 
            if args.navbar == 'off' then
 
                if args.state == 'plain' then add(stateLinkPlaceholder) end
 
            else
 
                if args.state ~= 'plain' then add(stateLinkPlaceholder) end
 
            end
 
        else
 
            if args.name then
 
                add(mw.getCurrentFrame():expandTemplate{ title = 'navbar', args = {
 
                    args.name,
 
                    mini = 1,
 
                    fontstyle = (args.basestyle or '') .. ';' .. (args.titlestyle or '') ..  ';background:none transparent;border:none;'
 
                }})
 
            else
 
                add('<span class="error" style="float:left;white-space:nowrap;">Error: No name provided</span>')
 
                if args.state == 'plain' then add(stateLinkPlaceholder) end
 
            end
 
        end
 
   
 
        add('<div class="', args.titleclass, '" style="font-size:110%;">')
 
        add(args.title)
 
        add('</div></th></tr>')
 
    end
 
  
    local aboveBelowColspan = 2
+
local titleCell = titleRow:tag('th'):attr('scope', 'col')
    if args.imageleft then aboveBelowColspan = aboveBelowColspan + 1 end
 
    if args.image then aboveBelowColspan = aboveBelowColspan + 1 end
 
  
    if args.above then
+
if args.titlegroup then
        if args.title then add(gutterRow) end
+
titleCell
        add('<tr><td class="navbox-abovebelow ', args.aboveclass, '" style="', args.basestyle, ';', args.abovestyle, '" colspan="', aboveBelowColspan, '">')
+
:css('border-left', '2px solid #fdfdfd')
        add('<div>', args.above, '</div></td></tr>')
+
:css('width', '100%')
    end
+
end
  
    if args.list1 then
+
local titleColspan = 2
        if args.title or args.above then add(gutterRow) end
+
if args.imageleft then titleColspan = titleColspan + 1 end
        add('<tr>')
+
if args.image then titleColspan = titleColspan + 1 end
        if args.imageleft then
+
if args.titlegroup then titleColspan = titleColspan - 1 end
            add('<td class="navbox-image ', args.imageclass, '" style="width:0%;padding:0px 2px 0px 0px;', args.imageleftstyle, '"')
 
            add(' rowspan=', (2 * #listnums - 1), '><div>', args.imageleft, '</div></td>')
 
        end
 
   
 
        if args.group1 then
 
            add('<th scope="row" class="navbox-group ', args.groupclass, '" style="', args.basestyle, ';')
 
            if args.groupwidth then add('width:', args.groupwidth, ';') end
 
            add(args.groupstyle, ';', args.group1style, '">')
 
            add(args.group1, '</th>')
 
            add('<td style="text-align:left;border-left-width:2px;border-left-style:solid;')
 
        else
 
            add('<td colspan=2 style="')
 
        end
 
        if not args.groupwidth then add('width:100%;') end
 
        add('padding:0px;', args.liststyle, ';', args.oddstyle, ';', args.list1style, '" class="navbox-list navbox-')
 
        if args.evenodd == 'swap' then
 
            add('even')
 
        else
 
            add(args.evenodd or 'odd')
 
        end
 
        add(' ', args.listclass, '">')
 
        add('<div style="padding:', args.list1padding or args.listpadding or '0em 0.25em', '">')
 
        add(args.list1)
 
        add('</div></td>')
 
  
        if args.image then
+
titleCell
            add('<td class="navbox-image ', args.imageclass, '" style="width:0%;padding:0px 0px 0px 2px;', args.imagestyle, '" ')
+
:cssText(args.basestyle)
            add(' rowspan=', (2 * #listnums - 1), '>')
+
:cssText(args.titlestyle)
            add('<div>', args.image, '</div></td>')
+
:addClass('navbox-title')
        end
+
:attr('colspan', titleColspan)
       
 
        add('</tr>')
 
    end
 
  
    -- render lists 2 through N
+
renderNavBar(titleCell)
    for i, listnum in ipairs(listnums) do
 
        if listnum > 1 then
 
            renderList(args, listnum)
 
        end
 
    end
 
   
 
    if args.below then
 
        if args.title or args.above or #listnums > 0 then add(gutterRow) end
 
        add('<tr><td class="navbox-abovebelow ', args.belowclass, '" style="', args.basestyle, ';', args.belowstyle, '"  colspan="', aboveBelowColspan, '">')
 
        add('<div>', args.below, '</div></td></tr>')
 
    end
 
  
    add('</table>')
+
titleCell
   
+
:tag('div')
    if border == 'subgroup' or border == 'child' then
+
-- id for aria-labelledby attribute
        add('<div>')
+
:attr('id', mw.uri.anchorEncode(args.title))
    elseif border ~= 'none' then
+
:addClass(args.titleclass)
        add('</td></tr></table>')
+
:css('font-size', '114%')
    end
+
:css('margin', '0 4em')
 +
:wikitext(processItem(args.title))
 +
end
  
    -- TODO: add tracking categories
+
--
   
+
--  Above/Below rows
    return table.concat(ret, '')
+
--
 +
 
 +
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
 +
 
 +
tbl:tag('tr')
 +
:tag('td')
 +
:addClass('navbox-abovebelow')
 +
:addClass(args.aboveclass)
 +
:cssText(args.basestyle)
 +
:cssText(args.abovestyle)
 +
:attr('colspan', getAboveBelowColspan())
 +
:tag('div')
 +
-- id for aria-labelledby attribute, if no title
 +
:attr('id', args.title and nil or mw.uri.anchorEncode(args.above))
 +
:wikitext(processItem(args.above, args.nowrapitems))
 +
end
 +
 
 +
local function renderBelowRow(tbl)
 +
if not args.below then return end
 +
 
 +
tbl:tag('tr')
 +
:tag('td')
 +
:addClass('navbox-abovebelow')
 +
:addClass(args.belowclass)
 +
:cssText(args.basestyle)
 +
:cssText(args.belowstyle)
 +
:attr('colspan', getAboveBelowColspan())
 +
:tag('div')
 +
:wikitext(processItem(args.below, args.nowrapitems))
 +
end
 +
 
 +
--
 +
--  List rows
 +
--
 +
local function renderListRow(tbl, index, listnum)
 +
local row = tbl:tag('tr')
 +
 
 +
if index == 1 and args.imageleft then
 +
row
 +
:tag('td')
 +
:addClass('navbox-image')
 +
:addClass(args.imageclass)
 +
:css('width', '1px')              -- Minimize width
 +
:css('padding', '0px 2px 0px 0px')
 +
:cssText(args.imageleftstyle)
 +
:attr('rowspan', #listnums)
 +
:tag('div')
 +
:wikitext(processItem(args.imageleft))
 +
end
 +
 
 +
if args['group' .. listnum] then
 +
local groupCell = row:tag('th')
 +
 
 +
-- id for aria-labelledby attribute, if lone group with no title or above
 +
if listnum == 1 and not (args.title or args.above or args.group2) then
 +
groupCell
 +
:attr('id', mw.uri.anchorEncode(args.group1))
 +
end
 +
 
 +
groupCell
 +
:attr('scope', 'row')
 +
:addClass('navbox-group')
 +
:addClass(args.groupclass)
 +
:cssText(args.basestyle)
 +
:css('width', args.groupwidth or '1%') -- If groupwidth not specified, minimize width
 +
 
 +
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 rowstyle  -- usually nil so cssText(rowstyle) usually adds nothing
 +
if index % 2 == 1 then
 +
rowstyle = args.oddstyle
 +
else
 +
rowstyle = args.evenstyle
 +
end
 +
 
 +
local listText = args['list' .. listnum]
 +
local oddEven = ODD_EVEN_MARKER
 +
if listText:sub(1, 12) == '</div><table' then
 +
-- Assume list text is for a subgroup navbox so no automatic striping for this row.
 +
oddEven = listText:find('<th[^>]*"navbox%-title"') and RESTART_MARKER or 'odd'
 +
end
 +
listCell
 +
:css('padding', '0px')
 +
:cssText(args.liststyle)
 +
:cssText(rowstyle)
 +
:cssText(args['list' .. listnum .. 'style'])
 +
:addClass('navbox-list')
 +
:addClass('navbox-' .. oddEven)
 +
:addClass(args.listclass)
 +
:addClass(args['list' .. listnum .. 'class'])
 +
:tag('div')
 +
:css('padding', (index == 1 and args.list1padding) or args.listpadding or '0em 0.25em')
 +
:wikitext(processItem(listText, args.nowrapitems))
 +
 
 +
if index == 1 and args.image then
 +
row
 +
:tag('td')
 +
:addClass('navbox-image')
 +
:addClass(args.imageclass)
 +
:css('width', '1px')              -- Minimize width
 +
:css('padding', '0px 0px 0px 2px')
 +
:cssText(args.imagestyle)
 +
:attr('rowspan', #listnums)
 +
:tag('div')
 +
:wikitext(processItem(args.image))
 +
end
 +
end
 +
 
 +
 
 +
--
 +
--  Tracking categories
 +
--
 +
 
 +
local function needsHorizontalLists()
 +
if border == 'subgroup' or args.tracking == 'no' then
 +
return false
 +
end
 +
local listClasses = {
 +
['plainlist'] = true, ['hlist'] = true, ['hlist hnum'] = true,
 +
['hlist hwrap'] = true, ['hlist vcard'] = true, ['vcard hlist'] = true,
 +
['hlist vevent'] = true,
 +
}
 +
return not (listClasses[args.listclass] or listClasses[args.bodyclass])
 +
end
 +
 
 +
local function hasBackgroundColors()
 +
for _, key in ipairs({'titlestyle', 'groupstyle', 'basestyle', 'abovestyle', 'belowstyle'}) do
 +
if tostring(args[key]):find('background', 1, true) then
 +
return true
 +
end
 +
end
 +
end
 +
 
 +
local function hasBorders()
 +
for _, key in ipairs({'groupstyle', 'basestyle', 'abovestyle', 'belowstyle'}) do
 +
if tostring(args[key]):find('border', 1, true) then
 +
return true
 +
end
 +
end
 +
end
 +
 
 +
local function isIllegible()
 +
local styleratio = require('Module:Color contrast')._styleratio
 +
 
 +
for key, style in pairs(args) do
 +
if tostring(key):match("style$") then
 +
if styleratio{mw.text.unstripNoWiki(style)} < 4.5 then
 +
return true
 +
end
 +
end
 +
end
 +
return false
 +
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
 +
if isIllegible() then table.insert(cats, 'Potentially illegible navboxes') end
 +
if hasBorders() then table.insert(cats, 'Navboxes using borders') 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 _, cat in ipairs(getTrackingCategories()) do
 +
builder:wikitext('[[Category:' .. cat .. ']]')
 +
end
 +
end
 +
 
 +
--
 +
--  Main navbox tables
 +
--
 +
local function renderMainTable()
 +
local tbl = mw.html.create('table')
 +
:addClass('nowraplinks')
 +
:addClass(args.bodyclass)
 +
 
 +
if args.title and (args.state ~= 'plain' and args.state ~= 'off') then
 +
if args.state == 'collapsed' then args.state = 'mw-collapsed' end
 +
tbl
 +
:addClass('mw-collapsible')
 +
:addClass(args.state or 'autocollapse')
 +
end
 +
 
 +
tbl:css('border-spacing', 0)
 +
if border == 'subgroup' or border == 'none' then
 +
tbl
 +
:addClass('navbox-subgroup')
 +
:cssText(args.bodystyle)
 +
:cssText(args.style)
 +
else  -- regular navbox - 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, i, listnum)
 +
end
 +
renderBelowRow(tbl)
 +
 
 +
return tbl
 +
end
 +
 
 +
function p._navbox(navboxArgs)
 +
args = navboxArgs
 +
listnums = {}
 +
 
 +
for k, _ in pairs(args) do
 +
if type(k) == 'string' then
 +
local listnum = k:match('^list(%d+)$')
 +
if listnum then table.insert(listnums, tonumber(listnum)) end
 +
end
 +
end
 +
table.sort(listnums)
 +
 
 +
border = mw.text.trim(args.border or args[1] or '')
 +
if border == 'child' then
 +
border = 'subgroup'
 +
end
 +
 
 +
-- render the main body of the navbox
 +
local tbl = renderMainTable()
 +
 
 +
-- render the appropriate wrapper around the navbox, depending on the border param
 +
local res = mw.html.create()
 +
if border == 'none' then
 +
local nav = res:tag('div')
 +
:attr('role', 'navigation')
 +
:node(tbl)
 +
-- aria-labelledby title, otherwise above, otherwise lone group
 +
if args.title or args.above or (args.group1 and not args.group2) then
 +
nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title or args.above or args.group1))
 +
else
 +
nav:attr('aria-label', 'Navbox')
 +
end
 +
elseif border == 'subgroup' 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 <div> to balance out the parent's </div>
 +
res
 +
:wikitext('</div>')
 +
:node(tbl)
 +
:wikitext('<div>')
 +
else
 +
local nav = res:tag('div')
 +
:attr('role', 'navigation')
 +
:addClass('navbox')
 +
:addClass(args.navboxclass)
 +
:cssText(args.bodystyle)
 +
:cssText(args.style)
 +
:css('padding', '3px')
 +
:node(tbl)
 +
-- aria-labelledby title, otherwise above, otherwise lone group
 +
if args.title or args.above or (args.group1 and not args.group2) then
 +
nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title or args.above or args.group1))
 +
else
 +
nav:attr('aria-label', 'Navbox')
 +
end
 +
end
 +
 
 +
if (args.nocat or 'false'):lower() == 'false' then
 +
renderTrackingCategories(res)
 +
end
 +
return striped(tostring(res))
 
end
 
end
  
 
function p.navbox(frame)
 
function p.navbox(frame)
    return p._navbox(frame:getParent().args)
+
if not getArgs then
 +
getArgs = require('Module:Arguments').getArgs
 +
end
 +
args = getArgs(frame, {wrappers = {'Template:Navbox', 'Template:Navbox subgroup'}})
 +
if frame.args.border then
 +
-- This allows Template:Navbox_subgroup to use {{#invoke:Navbox|navbox|border=...}}.
 +
args.border = frame.args.border
 +
end
 +
 
 +
-- 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
 
end
  
 
return p
 
return p

Latest revision as of 14:34, 9 March 2020

Documentation for this module may be created at Module:Navbox/doc

--
-- This module implements {{Navbox}}
--

local p = {}

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

local args
local border
local listnums
local ODD_EVEN_MARKER = '\127_ODDEVEN_\127'
local RESTART_MARKER = '\127_ODDEVEN0_\127'
local REGEX_MARKER = '\127_ODDEVEN(%d?)_\127'

local function striped(wikitext)
	-- Return wikitext with markers replaced for odd/even striping.
	-- Child (subgroup) navboxes are flagged with a category that is removed
	-- by parent navboxes. The result is that the category shows all pages
	-- where a child navbox is not contained in a parent navbox.
	local orphanCat = '[[Category:Navbox orphans]]'
	if border == 'subgroup' and args.orphan ~= 'yes' then
		-- No change; striping occurs in outermost navbox.
		return wikitext .. orphanCat
	end
	local first, second = 'odd', 'even'
	if args.evenodd then
		if args.evenodd == 'swap' then
			first, second = second, first
		else
			first = args.evenodd
			second = first
		end
	end
	local changer
	if first == second then
		changer = first
	else
		local index = 0
		changer = function (code)
			if code == '0' then
				-- Current occurrence is for a group before a nested table.
				-- Set it to first as a valid although pointless class.
				-- The next occurrence will be the first row after a title
				-- in a subgroup and will also be first.
				index = 0
				return first
			end
			index = index + 1
			return index % 2 == 1 and first or second
		end
	end
	local regex = orphanCat:gsub('([%[%]])', '%%%1')
	return (wikitext:gsub(regex, ''):gsub(REGEX_MARKER, changer))  -- () omits gsub count
end

local function processItem(item, nowrapitems)
	if item:sub(1, 2) == '{|' then
		-- Applying nowrap to lines in a table does not make sense.
		-- Add newlines to compensate for trim of x in |parm=x in a template.
		return '\n' .. item ..'\n'
	end
	if nowrapitems == 'yes' then
		local lines = {}
		for line in (item .. '\n'):gmatch('([^\n]*)\n') do
			local prefix, content = line:match('^([*:;#]+)%s*(.*)')
			if prefix and not content:match('^<span class="nowrap">') then
				line = prefix .. '<span class="nowrap">' .. content .. '</span>'
			end
			table.insert(lines, line)
		end
		item = table.concat(lines, '\n')
	end
	if item:match('^[*:;#]') then
		return '\n' .. item ..'\n'
	end
	return item
end

local function renderNavBar(titleCell)

	if args.navbar ~= 'off' and args.navbar ~= 'plain' and not (not args.name and mw.getCurrentFrame():getParent():getTitle():gsub('/sandbox$', '') == 'Template:Navbox') then
		titleCell:wikitext(navbar{
			args.name,
			mini = 1,
			fontstyle = (args.basestyle or '') .. ';' .. (args.titlestyle or '') .. ';background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;'
		})
	end

end

--
--   Title row
--
local function renderTitleRow(tbl)
	if not args.title then return end

	local titleRow = tbl:tag('tr')

	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')
			-- id for aria-labelledby attribute
			:attr('id', mw.uri.anchorEncode(args.title))
			:addClass(args.titleclass)
			:css('font-size', '114%')
			:css('margin', '0 4em')
			:wikitext(processItem(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

	tbl:tag('tr')
		:tag('td')
			:addClass('navbox-abovebelow')
			:addClass(args.aboveclass)
			:cssText(args.basestyle)
			:cssText(args.abovestyle)
			:attr('colspan', getAboveBelowColspan())
			:tag('div')
				-- id for aria-labelledby attribute, if no title
				:attr('id', args.title and nil or mw.uri.anchorEncode(args.above))
				:wikitext(processItem(args.above, args.nowrapitems))
end

local function renderBelowRow(tbl)
	if not args.below then return end

	tbl:tag('tr')
		:tag('td')
			:addClass('navbox-abovebelow')
			:addClass(args.belowclass)
			:cssText(args.basestyle)
			:cssText(args.belowstyle)
			:attr('colspan', getAboveBelowColspan())
			:tag('div')
				:wikitext(processItem(args.below, args.nowrapitems))
end

--
--   List rows
--
local function renderListRow(tbl, index, listnum)
	local row = tbl:tag('tr')

	if index == 1 and args.imageleft then
		row
			:tag('td')
				:addClass('navbox-image')
				:addClass(args.imageclass)
				:css('width', '1px')               -- Minimize width
				:css('padding', '0px 2px 0px 0px')
				:cssText(args.imageleftstyle)
				:attr('rowspan', #listnums)
				:tag('div')
					:wikitext(processItem(args.imageleft))
	end

	if args['group' .. listnum] then
		local groupCell = row:tag('th')

		-- id for aria-labelledby attribute, if lone group with no title or above
		if listnum == 1 and not (args.title or args.above or args.group2) then
			groupCell
				:attr('id', mw.uri.anchorEncode(args.group1))
		end

		groupCell
			:attr('scope', 'row')
			:addClass('navbox-group')
			:addClass(args.groupclass)
			:cssText(args.basestyle)
			:css('width', args.groupwidth or '1%') -- If groupwidth not specified, minimize width

		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 rowstyle  -- usually nil so cssText(rowstyle) usually adds nothing
	if index % 2 == 1 then
		rowstyle = args.oddstyle
	else
		rowstyle = args.evenstyle
	end

	local listText = args['list' .. listnum]
	local oddEven = ODD_EVEN_MARKER
	if listText:sub(1, 12) == '</div><table' then
		-- Assume list text is for a subgroup navbox so no automatic striping for this row.
		oddEven = listText:find('<th[^>]*"navbox%-title"') and RESTART_MARKER or 'odd'
	end
	listCell
		:css('padding', '0px')
		:cssText(args.liststyle)
		:cssText(rowstyle)
		:cssText(args['list' .. listnum .. 'style'])
		:addClass('navbox-list')
		:addClass('navbox-' .. oddEven)
		:addClass(args.listclass)
		:addClass(args['list' .. listnum .. 'class'])
		:tag('div')
			:css('padding', (index == 1 and args.list1padding) or args.listpadding or '0em 0.25em')
			:wikitext(processItem(listText, args.nowrapitems))

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


--
--   Tracking categories
--

local function needsHorizontalLists()
	if border == 'subgroup' or args.tracking == 'no' then
		return false
	end
	local listClasses = {
		['plainlist'] = true, ['hlist'] = true, ['hlist hnum'] = true,
		['hlist hwrap'] = true, ['hlist vcard'] = true, ['vcard hlist'] = true,
		['hlist vevent'] = true,
	}
	return not (listClasses[args.listclass] or listClasses[args.bodyclass])
end

local function hasBackgroundColors()
	for _, key in ipairs({'titlestyle', 'groupstyle', 'basestyle', 'abovestyle', 'belowstyle'}) do
		if tostring(args[key]):find('background', 1, true) then
			return true
		end
	end
end

local function hasBorders()
	for _, key in ipairs({'groupstyle', 'basestyle', 'abovestyle', 'belowstyle'}) do
		if tostring(args[key]):find('border', 1, true) then
			return true
		end
	end
end

local function isIllegible()
	local styleratio = require('Module:Color contrast')._styleratio

	for key, style in pairs(args) do
		if tostring(key):match("style$") then
			if styleratio{mw.text.unstripNoWiki(style)} < 4.5 then
				return true
			end
		end
	end
	return false
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
	if isIllegible() then table.insert(cats, 'Potentially illegible navboxes') end
	if hasBorders() then table.insert(cats, 'Navboxes using borders') 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 _, cat in ipairs(getTrackingCategories()) do
		builder:wikitext('[[Category:' .. cat .. ']]')
	end
end

--
--   Main navbox tables
--
local function renderMainTable()
	local tbl = mw.html.create('table')
		:addClass('nowraplinks')
		:addClass(args.bodyclass)

	if args.title and (args.state ~= 'plain' and args.state ~= 'off') then
		if args.state == 'collapsed' then args.state = 'mw-collapsed' end
		tbl
			:addClass('mw-collapsible')
			:addClass(args.state or 'autocollapse')
	end

	tbl:css('border-spacing', 0)
	if border == 'subgroup' or border == 'none' then
		tbl
			:addClass('navbox-subgroup')
			:cssText(args.bodystyle)
			:cssText(args.style)
	else  -- regular navbox - 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, i, listnum)
	end
	renderBelowRow(tbl)

	return tbl
end

function p._navbox(navboxArgs)
	args = navboxArgs
	listnums = {}

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

	border = mw.text.trim(args.border or args[1] or '')
	if border == 'child' then
		border = 'subgroup'
	end

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

	-- render the appropriate wrapper around the navbox, depending on the border param
	local res = mw.html.create()
	if border == 'none' then
		local nav = res:tag('div')
			:attr('role', 'navigation')
			:node(tbl)
		-- aria-labelledby title, otherwise above, otherwise lone group
		if args.title or args.above or (args.group1 and not args.group2) then
			nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title or args.above or args.group1))
		else
			nav:attr('aria-label', 'Navbox')
		end
	elseif border == 'subgroup' 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 <div> to balance out the parent's </div>
		res
			:wikitext('</div>')
			:node(tbl)
			:wikitext('<div>')
	else
		local nav = res:tag('div')
			:attr('role', 'navigation')
			:addClass('navbox')
			:addClass(args.navboxclass)
			:cssText(args.bodystyle)
			:cssText(args.style)
			:css('padding', '3px')
			:node(tbl)
		-- aria-labelledby title, otherwise above, otherwise lone group
		if args.title or args.above or (args.group1 and not args.group2) then
			nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title or args.above or args.group1))
		else
			nav:attr('aria-label', 'Navbox')
		end
	end

	if (args.nocat or 'false'):lower() == 'false' then
		renderTrackingCategories(res)
	end
	return striped(tostring(res))
end

function p.navbox(frame)
	if not getArgs then
		getArgs = require('Module:Arguments').getArgs
	end
	args = getArgs(frame, {wrappers = {'Template:Navbox', 'Template:Navbox subgroup'}})
	if frame.args.border then
		-- This allows Template:Navbox_subgroup to use {{#invoke:Navbox|navbox|border=...}}.
		args.border = frame.args.border
	end

	-- 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