Module:Navbox

    From Nonbinary Wiki
    Revision as of 12:41, 11 January 2018 by m>Frietjes ((1) add tracking for css borders in group/above/belowstyle (2) extended background colour check to above and belowstyle (3) add Johnuniq's change to enable using this module directly in Navbox subgroup)

    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;'
    		})
    	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')
    			: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')
    				: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')
    
    		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)
    		: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
    		tbl
    			:addClass('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
    
    	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)
    		if args.title then
    			nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title))
    		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')
    			:cssText(args.bodystyle)
    			:cssText(args.style)
    			:css('padding', '3px')
    			:node(tbl)
    		if args.title then
    			nav:attr('aria-labelledby', mw.uri.anchorEncode(args.title))
    		else
    			nav:attr('aria-label', 'Navbox')
    		end
    	end
    
    	renderTrackingCategories(res)
    
    	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