Module:Portal bar
This module implements the {{portal bar}} template. It displays a horizontal bar of portals.
Usage
{{#invoke:Portal bar|main|''portal 1''|''portal 2 ''|...|border=''no''}}
- Positional parameters - the names of the portals to be displayed.
border- if Template:Para is equal tono,n,false, or0, then the portal box will have no border.redlinks- if Template:Para is equal toyes,y,trueorinclude, then the portal box will show redlinked portals
Examples
{{#invoke:portal bar|main|Art|Science|Literature}}
Produces:
{{#invoke:portal bar|main|Art|Science|Literature|border=no}}
Produces:
For further examples, see Template:Portal bar/testcases.
Images
This module uses Module:Portal to get portal images. To add, change, or remove images, please see the instructions at Module:Portal#Image.
-- This module implements {{portal bar}}.
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' )
local trackingEnabled = true
-- Check whether to do tracking in this namespace
-- Returns true unless the page is one of the banned namespaces
local function checkTrackingNamespace()
local thisPage = mw.title.getCurrentTitle()
if (thisPage.namespace == 1) -- Talk
or (thisPage.namespace == 2) -- User
or (thisPage.namespace == 3) -- User talk
or (thisPage.namespace == 5) -- Wikipedia talk
or (thisPage.namespace == 7) -- File talk
or (thisPage.namespace == 11) -- Template talk
or (thisPage.namespace == 15) -- Category talk
or (thisPage.namespace == 101) -- Portal talk
or (thisPage.namespace == 109) -- Book talk
or (thisPage.namespace == 118) -- Draft
or (thisPage.namespace == 119) -- Draft talk
or (thisPage.namespace == 829) -- Module talk
then
return false
end
return true
end
-- Check whether to do tracking on this pagename
-- Returns false if the page title matches one of the banned strings
-- Otherwise returns true
local function checkTrackingPagename()
local thisPage = mw.title.getCurrentTitle()
local thisPageLC = mw.ustring.lower(thisPage.text)
if (string.match(thisPageLC, "/archive") ~= nil) then
return false
end
if (string.match(thisPageLC, "/doc") ~= nil) then
return false
end
if (string.match(thisPageLC, "/test") ~= nil) then
return false
end
return true
end
-- Builds the portal bar used by {{portal bar}}.
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
if (args.tracking == 'no') or (args.tracking == 'n') or (args.tracking == 'false') then
trackingEnabled = false
end
if (checkTrackingNamespace() == false) then
trackingEnabled = false
end
if (checkTrackingPagename() == false) then
trackingEnabled = false
end
-- If no portals have been specified, display an error and add the page to a tracking category.
if not portals[1] then
if (args.nominimum == 'yes') or (args.nominimum == 'y') or (args.nominimum == 'true') then
-- if nominimum as been set to yes (or similar), omit the warning
else
root:wikitext('<strong class="error">No portals specified: please specify at least one portal</strong>')
end
if (trackingEnabled) then
root:wikitext('[[Category:Portal templates without a parameter]]')
end
return tostring(root)
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
if trackingEnabled then
nav:wikitext('[[Category:Portal templates with redlinked portals]]')
end
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
if trackingEnabled then
return '[[Category:Portal templates with all redlinked portals]]'
else
return ""
end
end
if trackingEnabled then
nav:wikitext('[[Category:Portal templates with redlinked portals]]')
end
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( '[[File:%s|24x21px]]', getImageName{ portal } ) )
:done()
:wikitext( string.format( '[[Portal:%s|%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 {{portal|2=Politics}}. 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