Module:Portal bar

-- This module implements.

require('Module:No globals')

local p = {} local function checkPortalExists(portal) return not (mw.title.makeTitle(100, portal).id == 0) end local getImageName = require( 'Module:Portal' ).image local yesno = require( 'Module:Yesno' )

-- Builds the portal bar used by. function p._main( portals, args ) if #portals < 1 then return '' end -- Don't display a blank navbox if no portals were specified. local nav = mw.html.create( 'div' ) :addClass( 'noprint metadata' ) :attr( 'role', 'navigation' ) :attr( 'aria-label', 'Portals' ) :css( 'font-weight', 'bold' ) if yesno( args.border ) == false then nav :css( 'padding', '0.3em 1.7em 0.1em' ) :css( 'font-size', '88%' ) :css( 'text-align', 'center' ) else nav :addClass( 'navbox' ) :css( 'padding', '0.4em 2em' ) end -- scan for nonexistent portals, if they exist remove them from the portals table. If redlinks=yes, then don't remove local portallen = #portals -- traverse the list backwards to ensure that no portals are missed (table.remove also moves down the portals in the list, so that the next portal isn't checked if going fowards.	-- going backwards allows us to circumvent this issue	for i=portallen,1,-1 do		-- the use of pcall here catches any errors that may occour when attempting to locate pages when the page name is invalid		-- if pcall returns true, then rerun the function to find if the page exists		if not pcall(checkPortalExists, portals[i]) or not checkPortalExists(portals[i]) then			-- Getting here means a redlinked portal has been found			if (args.redlinks == 'yes') or (args.redlinks == 'y') or (args.redlinks == 'true') or (args.redlinks == 'include') then				-- if redlinks as been set to yes (or similar), add the cleanup category and then break the loop before the portal is removed from the list				nav:wikitext('')				break			end -- remove the portal (this does not happen if redlinks=yes) table.remove(portals,i) end end -- if the length of the table is different, then rows were removed from the table, so portals were removed. If this is the case add the cleanup category if not (portallen == #portals) then if #portals == 0 then return '' end nav:wikitext('') end local list = mw.html.create( 'ul' ) :css( 'margin', '0.1em 0 0' ) for _, portal in ipairs( portals ) do		list :tag( 'li' ) :css( 'display', 'inline' ) :tag( 'span' ) -- Inline-block on inner span for IE6-7 compatibility. :css( 'display', 'inline-block' ) :css( 'white-space', 'nowrap' ) :tag( 'span' ) :css( 'margin', '0 0.5em' ) :wikitext( string.format( '', getImageName{ portal } ) ) :done :wikitext( string.format( '%s portal', portal, portal ) ) end nav :node( list ) return tostring( nav ) end

-- Processes external arguments and sends them to the other functions. function p.main( frame ) -- If called via #invoke, use the args passed into the invoking -- template, or the args passed to #invoke if any exist. Otherwise -- assume args are being passed directly in from the debug console -- or from another Lua module. local origArgs if type( frame.getParent ) == 'function' then origArgs = frame:getParent.args for k, v in pairs( frame.args ) do			origArgs = frame.args break end else origArgs = frame end -- Process the args to make an array of portal names that can be used with ipairs. We need to use ipairs because we want to list -- all the portals in the order they were passed to the template, but we also want to be able to deal with positional arguments -- passed explicitly, for example. The behaviour of ipairs is undefined if nil values are present, so we -- need to make sure they are all removed. local portals, args = {}, {} for k, v in pairs( origArgs ) do if type( k ) == 'number' and type( v ) == 'string' then -- Make sure we have no non-string portal names. if mw.ustring.find( v, '%S' ) then -- Remove blank values. table.insert( portals, k ) end elseif type( k ) ~= 'number' then -- Separate named arguments from portals. if type( v ) == 'string' then v = mw.text.trim( v ) end args[ k ] = v		end end table.sort( portals ) for i, v in ipairs( portals ) do portals[ i ] = mw.text.trim( origArgs[ v ] ) -- Swap keys with values, trimming whitespace. end return p._main( portals, args ) end

return p