Module:Sandbox/Matt Fitzpatrick/Portal bar

-- This module implements.

require('strict')

local p = {}

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 list = mw.html.create( 'ul' ) :addClass( 'noprint metadata' ) :css( 'width', '100%' ) :css( 'text-align', 'center' ) :css( 'padding', '1px' ) :css( 'font-size', '88%' ) :css( 'font-weight', 'bold' ) if yesno( args.border ) == false then list :css( 'padding', '1px' ) else list :css( 'margin', '1em 0 0' ) :css( 'border', '1px solid #aaa' ) :css( 'padding', '4px' ) end for _, portal in ipairs( portals ) do		list :tag( 'li' ) :css( 'display', 'inline' ) :css( 'white-space', 'nowrap' ) :tag( 'span' ) :css( 'margin', 'auto 0.5em' ) :wikitext( string.format( '', getImageName{ portal } ) ) :done :wikitext( string.format( '%s portal', portal, portal ) ) end return tostring( list ) 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