Module:Navbar: Difference between revisions
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meta>Dragons flight m Changed protection level of Module:Navbar: Highly visible template or Lua module ([Edit=Block all non-admin users] (indefinite) [Move=Block all non-admin users] (indefinite)) |
meta>Dragons flight handle expensive parser function limit without killing the box |
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Line 17: | Line 17: | ||
return tostring(span) | return tostring(span) | ||
end | |||
function getTitle( pageName ) | |||
pageName = trim( pageName ); | |||
if mw.ustring.sub(pageName, 1, 1) == ':' then | |||
return mw.title.new( mw.ustring.sub(pageName, 2) ); | |||
else | |||
return mw.title.new( pageName, 'Template' ); | |||
end | |||
end | end | ||
Line 24: | Line 33: | ||
end | end | ||
local title; | local good, title; | ||
good, title = pcall( getTitle, args[1] ); | |||
if | if not good then | ||
return error('Expensive parser function limit exceeded'); | |||
end | |||
end | |||
if not title then | if not title then | ||
return error('Page does not exist') | return error('Page does not exist') |
Revision as of 20:07, 31 March 2013
This Lua module is used on approximately 14,900,000 pages, or roughly 221660% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
This module is used in system messages. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid large-scale disruption, any changes should first be tested in this module's /sandbox or /testcases subpage, or in your own user space. The tested changes can then be added in one single edit to this module. Please discuss any changes on the talk page before implementing them. |
This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing. |
This is a Lua implementation of {{Navbar}}. It is used in Module:Navbox.
local p = {}
local HtmlBuilder = require('Module:HtmlBuilder')
function trim(s)
return mw.ustring.match( s, "^%s*(.-)%s*$" )
end
function error(s)
local span = HtmlBuilder.create('span')
span
.addClass('error')
.css('float', 'left')
.css('white-space', 'nowrap')
.wikitext('Error: ' .. s)
return tostring(span)
end
function getTitle( pageName )
pageName = trim( pageName );
if mw.ustring.sub(pageName, 1, 1) == ':' then
return mw.title.new( mw.ustring.sub(pageName, 2) );
else
return mw.title.new( pageName, 'Template' );
end
end
function _navbar( args )
if not args[1] then
return error('No name provided')
end
local good, title;
good, title = pcall( getTitle, args[1] );
if not good then
return error('Expensive parser function limit exceeded');
end
if not title then
return error('Page does not exist')
end
local mainpage = title.fullText;
local talkpage = title.talkPageTitle and title.talkPageTitle.fullText or ''
local editurl = title:fullUrl( 'action=edit' );
local viewLink, talkLink, editLink = 'view', 'talk', 'edit'
if args.mini then
viewLink, talkLink, editLink = 'v', 't', 'e'
end
local div = HtmlBuilder.create( 'div' )
div
.addClass( 'noprint' )
.addClass( 'plainlinks' )
.addClass( 'hlist' )
.addClass( 'navbar')
.cssText( args.style )
if args.mini then div.addClass('mini') end
if not (args.mini or args.plain) then
div
.tag( 'span' )
.css( 'word-spacing', 0 )
.cssText( args.fontstyle )
.wikitext( args.text or 'This box:' )
.wikitext( ' ' )
end
if args.brackets then
div
.tag('span')
.css('margin-right', '-0.125em')
.cssText( args.fontstyle )
.wikitext( '[' )
.newline();
end
local ul = div.tag('ul');
ul
.tag( 'li' )
.addClass( 'nv-view' )
.wikitext( '[[' .. mainpage .. '|' )
.tag( 'span ' )
.attr( 'title', 'View this template' )
.cssText( args.fontstyle or '' )
.wikitext( viewLink )
.done()
.wikitext( ']]' )
.done()
.tag( 'li' )
.addClass( 'nv-talk' )
.wikitext( '[[' .. talkpage .. '|' )
.tag( 'span ' )
.attr( 'title', 'Discuss this template' )
.cssText( args.fontstyle or '' )
.wikitext( talkLink )
.done()
.wikitext( ']]' );
if not args.noedit then
ul
.tag( 'li' )
.addClass( 'nv-edit' )
.wikitext( '[' .. editurl .. ' ' )
.tag( 'span ' )
.attr( 'title', 'Edit this template' )
.cssText( args.fontstyle or '' )
.wikitext( editLink )
.done()
.wikitext( ']' );
end
if args.brackets then
div
.tag('span')
.css('margin-left', '-0.125em')
.cssText( args.fontstyle or '' )
.wikitext( ']' )
.newline();
end
return tostring(div)
end
function p.navbar(frame)
local origArgs
-- If called via #invoke, use the args passed into the invoking template.
-- Otherwise, for testing purposes, assume args are being passed directly in.
if frame == mw.getCurrentFrame() then
origArgs = frame:getParent().args
else
origArgs = frame
end
-- ParserFunctions considers the empty string to be false, so to preserve the previous
-- behavior of {{navbar}}, change any empty arguments to nil, so Lua will consider
-- them false too.
args = {}
for k, v in pairs(origArgs) do
if v ~= '' then
args[k] = v
end
end
return _navbar(args)
end
return p