Module:Documentation: Difference between revisions

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Remove all print subpage related code as they are being deleted (and non-functional)
metawikimedia>MusikBot II
m Changed protection settings for "Module:Documentation": High-risk template or module (more info) ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))
Line 3: Line 3:
-- Get required modules.
-- Get required modules.
local getArgs = require('Module:Arguments').getArgs
local getArgs = require('Module:Arguments').getArgs
local messageBox = require('Module:Message box')


-- Get the config table.
-- Get the config table.
local cfg = mw.loadData('Module:Documentation/config')
local cfg = mw.loadData('Module:Documentation/config')
 
local i18n = mw.loadData('Module:Documentation/i18n')
local p = {}
local p = {}


Line 32: Line 33:
expectType = expectType or 'string'
expectType = expectType or 'string'
if type(msg) ~= expectType then
if type(msg) ~= expectType then
error('message: type error in message cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)
error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-type', cfgKey, expectType, type(msg)), 2)
end
end
if not valArray then
if not valArray then
Line 40: Line 41:
local function getMessageVal(match)
local function getMessageVal(match)
match = tonumber(match)
match = tonumber(match)
return valArray[match] or error('message: no value found for key $' .. match .. ' in message cfg.' .. cfgKey, 4)
return valArray[match] or error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-empty', '$' .. match, cfgKey), 4)
end
end


return ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
local ret = ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
return ret
end
end


Line 80: Line 82:
ret[#ret + 1] = select(i, ...)
ret[#ret + 1] = select(i, ...)
end
end
-- 'documentation-toolbar'
return '<small>(' .. table.concat(ret, ' &#124; ') .. ')</small>'
return '<span class="' .. message('toolbar-class') .. '">('
.. table.concat(ret, ' &#124; ') .. ')</span>'
end
end


Line 112: Line 112:


----------------------------------------------------------------------------
----------------------------------------------------------------------------
-- Entry points
-- Load TemplateStyles
----------------------------------------------------------------------------
----------------------------------------------------------------------------


function p.nonexistent(frame)
p.main = function(frame)
if mw.title.getCurrentTitle().subpageText == 'testcases' then
local parent = frame.getParent(frame)
return frame:expandTemplate{title = 'module test cases notice'}
local output = p._main(parent.args)
else
return frame:extensionTag{ name='templatestyles', args = { src= message('templatestyles-scr') } } .. output
return p.main(frame)
end
end
end


p.main = makeInvokeFunc('_main')
----------------------------------------------------------------------------
-- Main function
----------------------------------------------------------------------------


function p._main(args)
function p._main(args)
Line 129: Line 129:
-- This function defines logic flow for the module.
-- This function defines logic flow for the module.
-- @args - table of arguments passed by the user
-- @args - table of arguments passed by the user
--
-- Messages:
-- 'main-div-id' --> 'template-documentation'
-- 'main-div-classes' --> 'template-documentation iezoomfix'
--]]
--]]
local env = p.getEnvironment(args)
local env = p.getEnvironment(args)
local root = mw.html.create()
local root = mw.html.create()
root
root
:wikitext(p._getModuleWikitext(args, env))
:wikitext(p.protectionTemplate(env))
:wikitext(p.protectionTemplate(env))
:wikitext(p.sandboxNotice(args, env))
:wikitext(p.sandboxNotice(args, env))
-- This div tag is from {{documentation/start box}}, but moving it here
-- so that we don't have to worry about unclosed tags.
:tag('div')
:tag('div')
-- 'documentation-container'
:attr('id', message('main-div-id'))
:addClass(message('container'))
:addClass(message('main-div-class'))
:newline()
:wikitext(p._startBox(args, env))
:tag('div')
:wikitext(p._content(args, env))
-- 'documentation'
:addClass(message('main-div-classes'))
:newline()
:wikitext(p._startBox(args, env))
:wikitext(p._content(args, env))
:tag('div')
-- 'documentation-clear'
:addClass(message('clear'))
:done()
:newline()
:done()
:wikitext(p._endBox(args, env))
:done()
:done()
:wikitext(p._endBox(args, env))
:wikitext(p.addTrackingCategories(env))
:wikitext(p.addTrackingCategories(env))
-- 'Module:Documentation/styles.css'
return tostring(root)
return mw.getCurrentFrame():extensionTag (
'templatestyles', '', {src=cfg['templatestyles']
}) .. tostring(root)
end
end


Line 167: Line 158:
function p.getEnvironment(args)
function p.getEnvironment(args)
--[[
--[[
-- Returns a table with information about the environment, including title
-- Returns a table with information about the environment, including title objects and other namespace- or
-- objects and other namespace- or path-related data.
-- path-related data.
-- @args - table of arguments passed by the user
-- @args - table of arguments passed by the user
--
--
Line 177: Line 168:
-- env.sandboxTitle - the /sandbox subpage.
-- env.sandboxTitle - the /sandbox subpage.
-- env.testcasesTitle - the /testcases subpage.
-- env.testcasesTitle - the /testcases subpage.
-- env.printTitle - the print version of the template, located at the /Print subpage.
--
--
-- Data includes:
-- Data includes:
Line 270: Line 262:
--]]
--]]
return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
end
function envFuncs.printTitle()
--[[
-- Title object for the /Print subpage.
-- Messages:
-- 'print-subpage' --> 'Print'
--]]
return env.templateTitle:subPageTitle(message('print-subpage'))
end
end


Line 283: Line 284:


function envFuncs.docSpace()
function envFuncs.docSpace()
-- The documentation namespace number. For most namespaces this is the
-- The documentation namespace number. For most namespaces this is the same as the
-- same as the subject namespace. However, pages in the Article, File,
-- subject namespace. However, pages in the Article, File, MediaWiki or Category
-- MediaWiki or Category namespaces must have their /doc, /sandbox and
-- namespaces must have their /doc, /sandbox and /testcases pages in talk space.
-- /testcases pages in talk space.
local subjectSpace = env.subjectSpace
local subjectSpace = env.subjectSpace
if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
Line 312: Line 312:
local compareUrl = mw.uri.fullUrl(
local compareUrl = mw.uri.fullUrl(
'Special:ComparePages',
'Special:ComparePages',
{ page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText}
{page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText}
)
)
return tostring(compareUrl)
return tostring(compareUrl)
Line 326: Line 326:
-- Auxiliary templates
-- Auxiliary templates
----------------------------------------------------------------------------
----------------------------------------------------------------------------
p.getModuleWikitext = makeInvokeFunc('_getModuleWikitext')
function p._getModuleWikitext(args, env)
local currentTitle = mw.title.getCurrentTitle()
if currentTitle.contentModel ~= 'Scribunto' then return end
pcall(require, currentTitle.prefixedText) -- if it fails, we don't care
local moduleWikitext =  package.loaded["Module:Module wikitext"]
if moduleWikitext then
return moduleWikitext.main()
end
end


function p.sandboxNotice(args, env)
function p.sandboxNotice(args, env)
Line 349: Line 337:
-- 'sandbox-notice-blurb' --> 'This is the $1 for $2.'
-- 'sandbox-notice-blurb' --> 'This is the $1 for $2.'
-- 'sandbox-notice-diff-blurb' --> 'This is the $1 for $2 ($3).'
-- 'sandbox-notice-diff-blurb' --> 'This is the $1 for $2 ($3).'
-- 'sandbox-notice-pagetype-template' --> '[[Wikipedia:Template test cases|template sandbox]] page'
-- 'sandbox-notice-pagetype-template' --> '[[w:Wikipedia:Template test cases|template sandbox]] page'
-- 'sandbox-notice-pagetype-module' --> '[[Wikipedia:Template test cases|module sandbox]] page'
-- 'sandbox-notice-pagetype-module' --> '[[w:Wikipedia:Template test cases|module sandbox]] page'
-- 'sandbox-notice-pagetype-other' --> 'sandbox page'
-- 'sandbox-notice-pagetype-other' --> 'sandbox page'
-- 'sandbox-notice-compare-link-display' --> 'diff'
-- 'sandbox-notice-compare-link-display' --> 'diff'
Line 361: Line 349:
local templateTitle = env.templateTitle
local templateTitle = env.templateTitle
local subjectSpace = env.subjectSpace
local subjectSpace = env.subjectSpace
if not (subjectSpace and title and sandboxTitle and templateTitle
if not (subjectSpace and title and sandboxTitle and templateTitle and mw.title.equals(title, sandboxTitle)) then
and mw.title.equals(title, sandboxTitle)) then
return nil
return nil
end
end
Line 371: Line 358:
-- "This is the template sandbox for [[Template:Foo]] (diff)."
-- "This is the template sandbox for [[Template:Foo]] (diff)."
local text = ''
local text = ''
local frame = mw.getCurrentFrame()
local isPreviewing = frame:preprocess('{{REVISIONID}}') == '' -- True if the page is being previewed.
local pagetype
local pagetype
if subjectSpace == 10 then
if subjectSpace == 10 then
Line 381: Line 370:
local templateLink = makeWikilink(templateTitle.prefixedText)
local templateLink = makeWikilink(templateTitle.prefixedText)
local compareUrl = env.compareUrl
local compareUrl = env.compareUrl
if compareUrl then
if isPreviewing or not compareUrl then
text = text .. message('sandbox-notice-blurb', {pagetype, templateLink})
else
local compareDisplay = message('sandbox-notice-compare-link-display')
local compareDisplay = message('sandbox-notice-compare-link-display')
local compareLink = makeUrlLink(compareUrl, compareDisplay)
local compareLink = makeUrlLink(compareUrl, compareDisplay)
text = text .. message('sandbox-notice-diff-blurb', {pagetype, templateLink, compareLink})
text = text .. message('sandbox-notice-diff-blurb', {pagetype, templateLink, compareLink})
else
text = text .. message('sandbox-notice-blurb', {pagetype, templateLink})
end
end
-- Get the test cases page blurb if the page exists. This is something like
-- Get the test cases page blurb if the page exists. This is something like
Line 405: Line 394:
end
end
-- Add the sandbox to the sandbox category.
-- Add the sandbox to the sandbox category.
omargs.text = text .. makeCategoryLink(message('sandbox-category'))
text = text .. makeCategoryLink(message('sandbox-category'))
 
omargs.text = text
-- 'documentation-clear'
omargs.class = message('sandbox-class')
return '<div class="' .. message('clear') .. '"></div>'
return messageBox.main('ombox', omargs)
.. require('Module:Message box').main('ombox', omargs)
end
end


Line 418: Line 406:
-- 'protection-template' --> 'pp-template'
-- 'protection-template' --> 'pp-template'
-- 'protection-template-args' --> {docusage = 'yes'}
-- 'protection-template-args' --> {docusage = 'yes'}
local protectionLevels = env.protectionLevels
local title = env.title
local protectionLevels
local protectionTemplate = message('protection-template')
local namespace = title.namespace
if not (protectionTemplate and (namespace == 10 or namespace == 828)) then
-- Don't display the protection template if we are not in the template or module namespaces.
return nil
end
protectionLevels = env.protectionLevels
if not protectionLevels then
if not protectionLevels then
return nil
return nil
end
end
local editProt = protectionLevels.edit and protectionLevels.edit[1]
local editLevels = protectionLevels.edit
local moveProt = protectionLevels.move and protectionLevels.move[1]
local moveLevels = protectionLevels.move
if editProt then
if moveLevels and moveLevels[1] == 'sysop' or editLevels and editLevels[1] then
-- The page is edit-protected.
-- The page is full-move protected, or full, template, or semi-protected.
return require('Module:Protection banner')._main{
local frame = mw.getCurrentFrame()
message('protection-reason-edit'), small = true
return frame:expandTemplate{title = protectionTemplate, args = message('protection-template-args', nil, 'table')}
}
elseif moveProt and moveProt ~= 'autoconfirmed' then
-- The page is move-protected but not edit-protected. Exclude move
-- protection with the level "autoconfirmed", as this is equivalent to
-- no move protection at all.
return require('Module:Protection banner')._main{
action = 'move', small = true
}
else
else
return nil
return nil
Line 460: Line 448:
local links
local links
local content = args.content
local content = args.content
if not content or args[1] then
if not content then
-- No need to include the links if the documentation is on the template page itself.
-- No need to include the links if the documentation is on the template page itself.
local linksData = p.makeStartBoxLinksData(args, env)
local linksData = p.makeStartBoxLinksData(args, env)
Line 507: Line 495:
data.docTitle = docTitle
data.docTitle = docTitle
-- View, display, edit, and purge links if /doc exists.
-- View, display, edit, and purge links if /doc exists.
data.viewLinkDisplay = message('view-link-display')
data.viewLinkDisplay = i18n['view-link-display']
data.editLinkDisplay = message('edit-link-display')
data.editLinkDisplay = i18n['edit-link-display']
data.historyLinkDisplay = message('history-link-display')
data.historyLinkDisplay = i18n['history-link-display']
data.purgeLinkDisplay = message('purge-link-display')
data.purgeLinkDisplay = i18n['purge-link-display']
-- Create link if /doc doesn't exist.
-- Create link if /doc doesn't exist.
local preload = args.preload
local preload = args.preload
Line 523: Line 511:
end
end
data.preload = preload
data.preload = preload
data.createLinkDisplay = message('create-link-display')
data.createLinkDisplay = i18n['create-link-display']
return data
return data
end
end
Line 535: Line 523:
local function escapeBrackets(s)
local function escapeBrackets(s)
-- Escapes square brackets with HTML entities.
-- Escapes square brackets with HTML entities.
s = s:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
s = s:gsub('%]', '&#93;')
return s
return s
    :gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
    :gsub('%]', '&#93;')
end
end


Line 568: Line 556:
--
--
-- Messages:
-- Messages:
-- 'documentation-icon-wikitext' --> '[[File:Test Template Info-Icon - Version (2).svg|50px|link=|alt=]]'
-- 'documentation-icon-wikitext' --> '[[File:Test Template Info-Icon - Version (2).svg|50px|link=|alt=Documentation icon]]'
-- 'template-namespace-heading' --> 'Template documentation'
-- 'template-namespace-heading' --> 'Template documentation'
-- 'module-namespace-heading' --> 'Module documentation'
-- 'module-namespace-heading' --> 'Module documentation'
-- 'file-namespace-heading' --> 'Summary'
-- 'file-namespace-heading' --> 'Summary'
-- 'other-namespaces-heading' --> 'Documentation'
-- 'other-namespaces-heading' --> 'Documentation'
-- 'start-box-linkclasses' --> 'mw-editsection-like plainlinks'
-- 'start-box-link-id' --> 'doc_editlinks'
-- 'testcases-create-link-display' --> 'create'
-- 'testcases-create-link-display' --> 'create'
--]=]
--]=]
Line 592: Line 582:
data.heading = heading
data.heading = heading
elseif subjectSpace == 10 then -- Template namespace
elseif subjectSpace == 10 then -- Template namespace
data.heading = message('documentation-icon-wikitext') .. ' ' .. message('template-namespace-heading')
data.heading = i18n['template-namespace-heading']
elseif subjectSpace == 828 then -- Module namespace
elseif subjectSpace == 828 then -- Module namespace
data.heading = message('documentation-icon-wikitext') .. ' ' .. message('module-namespace-heading')
data.heading = i18n['module-namespace-heading']
elseif subjectSpace == 6 then -- File namespace
elseif subjectSpace == 6 then -- File namespace
data.heading = message('file-namespace-heading')
data.heading = i18n['file-namespace-heading']
else
data.heading = message('other-namespaces-heading')
end
-- Heading CSS
local headingStyle = args['heading-style']
if headingStyle then
data.headingStyleText = headingStyle
else
else
-- 'documentation-heading'
data.heading = i18n['other-namespaces-heading']
data.headingClass = message('main-div-heading-class')
end
end
-- Data for the [view][edit][history][purge] or [create] links.
-- Data for the [view][edit][history][purge] or [create] links.
if links then
if links then
-- 'mw-editsection-like plainlinks'
data.linksClass = message('start-box-linkclasses')
data.linksClass = message('start-box-link-classes')
data.linksId = message('start-box-link-id')
data.links = links
data.links = links
end
end
Line 625: Line 606:
local sbox = mw.html.create('div')
local sbox = mw.html.create('div')
sbox
sbox
-- 'documentation-startbox'
:addClass(message('header-div-class'))
:addClass(message('start-box-class'))
:tag('div')
:newline()
:addClass(message('heading-div-class'))
:tag('span')
:addClass(data.headingClass)
:cssText(data.headingStyleText)
:wikitext(data.heading)
:wikitext(data.heading)
local links = data.links
local links = data.links
if links then
if links then
sbox:tag('span')
sbox
:addClass(data.linksClass)
:tag('div')
:attr('id', data.linksId)
:addClass(data.linksClass)
:wikitext(links)
:attr('id', data.linksId)
:wikitext(links)
end
end
return tostring(sbox)
return tostring(sbox)
Line 656: Line 635:
local content = args.content
local content = args.content
if not content and docTitle and docTitle.exists then
if not content and docTitle and docTitle.exists then
content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle.prefixedText}
content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle}
end
end
-- The line breaks below are necessary so that "=== Headings ===" at the start and end
-- The line breaks below are necessary so that "=== Headings ===" at the start and end
-- of docs are interpreted correctly.
-- of docs are interpreted correctly.
return '\n' .. (content or '') .. '\n'  
local cbox = mw.html.create('div')
cbox
:addClass(message('content-div-class'))
:wikitext('\n' .. (content or '') .. '\n')
return tostring(cbox)
end
end


Line 686: Line 669:
-- @args - a table of arguments passed by the user
-- @args - a table of arguments passed by the user
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
--
--]=]
--]=]
Line 712: Line 694:
end
end


-- Assemble the link box.
-- Assemble the footer text field.
local text = ''
local text = ''
if linkBox then
if linkBox then
Line 722: Line 704:
-- Add sandbox and testcases links.
-- Add sandbox and testcases links.
-- "Editors can experiment in this template's sandbox and testcases pages."
-- "Editors can experiment in this template's sandbox and testcases pages."
text = text .. (p.makeExperimentBlurb(args, env) or '') .. '<br />'
text = text .. (p.makeExperimentBlurb(args, env) or '')
text = text .. '<br />'
if not args.content and not args[1] then
if not args.content and not args[1] then
-- "Please add categories to the /doc subpage."
-- "Please add categories to the /doc subpage."
Line 730: Line 713:
end
end
text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
if printBlurb then
text = text .. '<br />' .. printBlurb
end
end
end
end
end
 
local box = mw.html.create('div')
local ebox = mw.html.create('div')
-- 'documentation-metadata'
ebox
box:attr('role', 'note')
:addClass(message('footer-div-class'))
:addClass(message('end-box-class'))
-- 'plainlinks'
:addClass(message('end-box-plainlinks'))
:wikitext(text)
:wikitext(text)
:done()
return tostring(ebox)
 
return '\n' .. tostring(box)
end
end


Line 755: Line 737:
-- 'history-link-display' --> 'history'
-- 'history-link-display' --> 'history'
-- 'transcluded-from-blurb' -->  
-- 'transcluded-from-blurb' -->  
-- 'The above [[Wikipedia:Template documentation|documentation]]  
-- 'The above [[w:Wikipedia:Template documentation|documentation]]  
-- is [[Help:Transclusion|transcluded]] from $1.'
-- is [[w:Wikipedia:Transclusion|transcluded]] from $1.'
-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
-- 'create-link-display' --> 'create'
-- 'create-link-display' --> 'create'
-- 'create-module-doc-blurb' -->
-- 'create-module-doc-blurb' -->
-- 'You might want to $1 a documentation page for this [[Wikipedia:Lua|Scribunto module]].'
-- 'You might want to $1 a documentation page for this [[w:Wikipedia:Lua|Scribunto module]].'
--]=]
--]=]
local docTitle = env.docTitle
local docTitle = env.docTitle
if not docTitle then
if not docTitle or args.content then
return nil
return nil
end
end
Line 771: Line 753:
local docLink = makeWikilink(docTitle.prefixedText)
local docLink = makeWikilink(docTitle.prefixedText)
local editUrl = docTitle:fullUrl{action = 'edit'}
local editUrl = docTitle:fullUrl{action = 'edit'}
local editDisplay = message('edit-link-display')
local editDisplay = i18n['edit-link-display']
local editLink = makeUrlLink(editUrl, editDisplay)
local editLink = makeUrlLink(editUrl, editDisplay)
local historyUrl = docTitle:fullUrl{action = 'history'}
local historyUrl = docTitle:fullUrl{action = 'history'}
local historyDisplay = message('history-link-display')
local historyDisplay = i18n['history-link-display']
local historyLink = makeUrlLink(historyUrl, historyDisplay)
local historyLink = makeUrlLink(historyUrl, historyDisplay)
ret = message('transcluded-from-blurb', {docLink})
ret = message('transcluded-from-blurb', {docLink})
Line 783: Line 765:
-- /doc does not exist; ask to create it.
-- /doc does not exist; ask to create it.
local createUrl = docTitle:fullUrl{action = 'edit', preload = message('module-preload')}
local createUrl = docTitle:fullUrl{action = 'edit', preload = message('module-preload')}
local createDisplay = message('create-link-display')
local createDisplay = i18n['create-link-display']
local createLink = makeUrlLink(createUrl, createDisplay)
local createLink = makeUrlLink(createUrl, createDisplay)
ret = message('create-module-doc-blurb', {createLink})
ret = message('create-module-doc-blurb', {createLink})
Line 856: Line 838:
local mirrorPreload = message('mirror-link-preload')
local mirrorPreload = message('mirror-link-preload')
local mirrorUrl = sandboxTitle:fullUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
local mirrorUrl = sandboxTitle:fullUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
if subjectSpace == 828 then
mirrorUrl = sandboxTitle:fullUrl{action = 'edit', preload = templateTitle.prefixedText, summary = mirrorSummary}
end
local mirrorDisplay = message('mirror-link-display')
local mirrorDisplay = message('mirror-link-display')
local mirrorLink = makeUrlLink(mirrorUrl, mirrorDisplay)
local mirrorLink = makeUrlLink(mirrorUrl, mirrorDisplay)
Line 870: Line 849:
local testcasesEditDisplay = message('testcases-edit-link-display')
local testcasesEditDisplay = message('testcases-edit-link-display')
local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay)
local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay)
-- for Modules, add testcases run link if exists
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
if testcasesTitle.contentModel == "Scribunto"  and testcasesTitle.talkPageTitle and testcasesTitle.talkPageTitle.exists then
local testcasesRunLinkDisplay = message('testcases-run-link-display')
local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink, testcasesRunLink)
else
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
end
else
else
local testcasesPreload
local testcasesPreload
Line 946: Line 918:
)
)
return message('subpages-blurb', {subpagesLink})
return message('subpages-blurb', {subpagesLink})
end
function p.makePrintBlurb(args, env)
--[=[
-- Generates the blurb displayed when there is a print version of the template available.
-- @args - a table of arguments passed by the user
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
--
-- Messages:
-- 'print-link-display' --> '/Print'
-- 'print-blurb' --> 'A [[Help:Books/for experts#Improving the book layout|print version]]'
-- .. ' of this template exists at $1.'
-- .. ' If you make a change to this template, please update the print version as well.'
-- 'display-print-category' --> true
-- 'print-category' --> 'Templates with print versions'
--]=]
local printTitle = env.printTitle
if not printTitle then
return nil
end
local ret
if printTitle.exists then
local printLink = makeWikilink(printTitle.prefixedText, message('print-link-display'))
ret = message('print-blurb', {printLink})
local displayPrintCategory = message('display-print-category', nil, 'boolean')
if displayPrintCategory then
ret = ret .. makeCategoryLink(message('print-category'))
end
end
return ret
end
end



Revision as of 18:01, 23 August 2021

Documentation for this module may be created at Module:Documentation/doc

-- This module implements {{documentation}}.

-- Get required modules.
local getArgs = require('Module:Arguments').getArgs
local messageBox = require('Module:Message box')

-- Get the config table.
local cfg = mw.loadData('Module:Documentation/config')
local i18n = mw.loadData('Module:Documentation/i18n')
local p = {}

-- Often-used functions.
local ugsub = mw.ustring.gsub

----------------------------------------------------------------------------
-- Helper functions
--
-- These are defined as local functions, but are made available in the p
-- table for testing purposes.
----------------------------------------------------------------------------

local function message(cfgKey, valArray, expectType)
	--[[
	-- Gets a message from the cfg table and formats it if appropriate.
	-- The function raises an error if the value from the cfg table is not
	-- of the type expectType. The default type for expectType is 'string'.
	-- If the table valArray is present, strings such as $1, $2 etc. in the
	-- message are substituted with values from the table keys [1], [2] etc.
	-- For example, if the message "foo-message" had the value 'Foo $2 bar $1.',
	-- message('foo-message', {'baz', 'qux'}) would return "Foo qux bar baz."
	--]]
	local msg = cfg[cfgKey]
	expectType = expectType or 'string'
	if type(msg) ~= expectType then
		error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-type', cfgKey, expectType, type(msg)), 2)
	end
	if not valArray then
		return msg
	end

	local function getMessageVal(match)
		match = tonumber(match)
		return valArray[match] or error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-empty', '$' .. match, cfgKey), 4)
	end

	local ret = ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
	return ret
end

p.message = message

local function makeWikilink(page, display)
	if display then
		return mw.ustring.format('[[%s|%s]]', page, display)
	else
		return mw.ustring.format('[[%s]]', page)
	end
end

p.makeWikilink = makeWikilink

local function makeCategoryLink(cat, sort)
	local catns = mw.site.namespaces[14].name
	return makeWikilink(catns .. ':' .. cat, sort)
end

p.makeCategoryLink = makeCategoryLink

local function makeUrlLink(url, display)
	return mw.ustring.format('[%s %s]', url, display)
end

p.makeUrlLink = makeUrlLink

local function makeToolbar(...)
	local ret = {}
	local lim = select('#', ...)
	if lim < 1 then
		return nil
	end
	for i = 1, lim do
		ret[#ret + 1] = select(i, ...)
	end
	return '<small>(' .. table.concat(ret, ' &#124; ') .. ')</small>'
end	

p.makeToolbar = makeToolbar

----------------------------------------------------------------------------
-- Argument processing
----------------------------------------------------------------------------

local function makeInvokeFunc(funcName)
	return function (frame)
		local args = getArgs(frame, {
			valueFunc = function (key, value)
				if type(value) == 'string' then
					value = value:match('^%s*(.-)%s*$') -- Remove whitespace.
					if key == 'heading' or value ~= '' then
						return value
					else
						return nil
					end
				else
					return value
				end
			end
		})
		return p[funcName](args)
	end
end

----------------------------------------------------------------------------
-- Load TemplateStyles
----------------------------------------------------------------------------

p.main = function(frame)
	local parent = frame.getParent(frame)
	local output = p._main(parent.args)
	return frame:extensionTag{ name='templatestyles', args = { src= message('templatestyles-scr') } } .. output
end

----------------------------------------------------------------------------
-- Main function
----------------------------------------------------------------------------

function p._main(args)
	--[[
	-- This function defines logic flow for the module.
	-- @args - table of arguments passed by the user
	-- 
	-- Messages:
	-- 'main-div-id' --> 'template-documentation'
	-- 'main-div-classes' --> 'template-documentation iezoomfix'
	--]]
	local env = p.getEnvironment(args)
	local root = mw.html.create()
	root
		:wikitext(p.protectionTemplate(env))
		:wikitext(p.sandboxNotice(args, env))
		 -- This div tag is from {{documentation/start box}}, but moving it here
		 -- so that we don't have to worry about unclosed tags.
		:tag('div')
			:attr('id', message('main-div-id'))
			:addClass(message('main-div-class'))
			:wikitext(p._startBox(args, env))
			:wikitext(p._content(args, env))
			:done()
		:wikitext(p._endBox(args, env))
		:wikitext(p.addTrackingCategories(env))
	return tostring(root)
end

----------------------------------------------------------------------------
-- Environment settings
----------------------------------------------------------------------------

function p.getEnvironment(args)
	--[[
	-- Returns a table with information about the environment, including title objects and other namespace- or
	-- path-related data.
	-- @args - table of arguments passed by the user
	--
	-- Title objects include:
	-- env.title - the page we are making documentation for (usually the current title)
	-- env.templateTitle - the template (or module, file, etc.)
	-- env.docTitle - the /doc subpage.
	-- env.sandboxTitle - the /sandbox subpage.
	-- env.testcasesTitle - the /testcases subpage.
	-- env.printTitle - the print version of the template, located at the /Print subpage.
	--
	-- Data includes:
	-- env.protectionLevels - the protection levels table of the title object.
	-- env.subjectSpace - the number of the title's subject namespace.
	-- env.docSpace - the number of the namespace the title puts its documentation in.
	-- env.docpageBase - the text of the base page of the /doc, /sandbox and /testcases pages, with namespace.
	-- env.compareUrl - URL of the Special:ComparePages page comparing the sandbox with the template.
	-- 
	-- All table lookups are passed through pcall so that errors are caught. If an error occurs, the value
	-- returned will be nil.
	--]]
	
	local env, envFuncs = {}, {}

	-- Set up the metatable. If triggered we call the corresponding function in the envFuncs table. The value
	-- returned by that function is memoized in the env table so that we don't call any of the functions
	-- more than once. (Nils won't be memoized.)
	setmetatable(env, {
		__index = function (t, key)
			local envFunc = envFuncs[key]
			if envFunc then
				local success, val = pcall(envFunc)
				if success then
					env[key] = val -- Memoise the value.
					return val
				end
			end
			return nil
		end
	})	

	function envFuncs.title()
		-- The title object for the current page, or a test page passed with args.page.
		local title
		local titleArg = args.page
		if titleArg then
			title = mw.title.new(titleArg)
		else
			title = mw.title.getCurrentTitle()
		end
		return title
	end

	function envFuncs.templateTitle()
		--[[
		-- The template (or module, etc.) title object.
		-- Messages:
		-- 'sandbox-subpage' --> 'sandbox'
		-- 'testcases-subpage' --> 'testcases'
		--]]
		local subjectSpace = env.subjectSpace
		local title = env.title
		local subpage = title.subpageText
		if subpage == message('sandbox-subpage') or subpage == message('testcases-subpage') then
			return mw.title.makeTitle(subjectSpace, title.baseText)
		else
			return mw.title.makeTitle(subjectSpace, title.text)
		end
	end

	function envFuncs.docTitle()
		--[[
		-- Title object of the /doc subpage.
		-- Messages:
		-- 'doc-subpage' --> 'doc'
		--]]
		local title = env.title
		local docname = args[1] -- User-specified doc page.
		local docpage
		if docname then
			docpage = docname
		else
			docpage = env.docpageBase .. '/' .. message('doc-subpage')
		end
		return mw.title.new(docpage)
	end
	
	function envFuncs.sandboxTitle()
		--[[
		-- Title object for the /sandbox subpage.
		-- Messages:
		-- 'sandbox-subpage' --> 'sandbox'
		--]]
		return mw.title.new(env.docpageBase .. '/' .. message('sandbox-subpage'))
	end
	
	function envFuncs.testcasesTitle()
		--[[
		-- Title object for the /testcases subpage.
		-- Messages:
		-- 'testcases-subpage' --> 'testcases'
		--]]
		return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
	end
	
	function envFuncs.printTitle()
		--[[
		-- Title object for the /Print subpage.
		-- Messages:
		-- 'print-subpage' --> 'Print'
		--]]
		return env.templateTitle:subPageTitle(message('print-subpage'))
	end

	function envFuncs.protectionLevels()
		-- The protection levels table of the title object.
		return env.title.protectionLevels
	end

	function envFuncs.subjectSpace()
		-- The subject namespace number.
		return mw.site.namespaces[env.title.namespace].subject.id
	end

	function envFuncs.docSpace()
		-- The documentation namespace number. For most namespaces this is the same as the
		-- subject namespace. However, pages in the Article, File, MediaWiki or Category
		-- namespaces must have their /doc, /sandbox and /testcases pages in talk space.
		local subjectSpace = env.subjectSpace
		if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
			return subjectSpace + 1
		else
			return subjectSpace
		end
	end

	function envFuncs.docpageBase()
		-- The base page of the /doc, /sandbox, and /testcases subpages.
		-- For some namespaces this is the talk page, rather than the template page.
		local templateTitle = env.templateTitle
		local docSpace = env.docSpace
		local docSpaceText = mw.site.namespaces[docSpace].name
		-- Assemble the link. docSpace is never the main namespace, so we can hardcode the colon.
		return docSpaceText .. ':' .. templateTitle.text
	end
	
	function envFuncs.compareUrl()
		-- Diff link between the sandbox and the main template using [[Special:ComparePages]].
		local templateTitle = env.templateTitle
		local sandboxTitle = env.sandboxTitle
		if templateTitle.exists and sandboxTitle.exists then
			local compareUrl = mw.uri.fullUrl(
				'Special:ComparePages',
				{page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText}
			)
			return tostring(compareUrl)
		else
			return nil
		end
	end		

	return env
end	

----------------------------------------------------------------------------
-- Auxiliary templates
----------------------------------------------------------------------------

function p.sandboxNotice(args, env)
	--[=[
	-- Generates a sandbox notice for display above sandbox pages.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'sandbox-notice-image' --> '[[Image:Sandbox.svg|50px|alt=|link=]]'
	-- 'sandbox-notice-blurb' --> 'This is the $1 for $2.'
	-- 'sandbox-notice-diff-blurb' --> 'This is the $1 for $2 ($3).'
	-- 'sandbox-notice-pagetype-template' --> '[[w:Wikipedia:Template test cases|template sandbox]] page'
	-- 'sandbox-notice-pagetype-module' --> '[[w:Wikipedia:Template test cases|module sandbox]] page'
	-- 'sandbox-notice-pagetype-other' --> 'sandbox page'
	-- 'sandbox-notice-compare-link-display' --> 'diff'
	-- 'sandbox-notice-testcases-blurb' --> 'See also the companion subpage for $1.'
	-- 'sandbox-notice-testcases-link-display' --> 'test cases'
	-- 'sandbox-category' --> 'Template sandboxes'
	--]=]
	local title = env.title
	local sandboxTitle = env.sandboxTitle
	local templateTitle = env.templateTitle
	local subjectSpace = env.subjectSpace
	if not (subjectSpace and title and sandboxTitle and templateTitle and mw.title.equals(title, sandboxTitle)) then
		return nil
	end
	-- Build the table of arguments to pass to {{ombox}}. We need just two fields, "image" and "text".
	local omargs = {}
	omargs.image = message('sandbox-notice-image')
	-- Get the text. We start with the opening blurb, which is something like
	-- "This is the template sandbox for [[Template:Foo]] (diff)."
	local text = ''
	local frame = mw.getCurrentFrame()
	local isPreviewing = frame:preprocess('{{REVISIONID}}') == '' -- True if the page is being previewed.
	local pagetype
	if subjectSpace == 10 then
		pagetype = message('sandbox-notice-pagetype-template')
	elseif subjectSpace == 828 then
		pagetype = message('sandbox-notice-pagetype-module')
	else
		pagetype = message('sandbox-notice-pagetype-other')
	end
	local templateLink = makeWikilink(templateTitle.prefixedText)
	local compareUrl = env.compareUrl
	if isPreviewing or not compareUrl then
		text = text .. message('sandbox-notice-blurb', {pagetype, templateLink})
	else
		local compareDisplay = message('sandbox-notice-compare-link-display')
		local compareLink = makeUrlLink(compareUrl, compareDisplay)
		text = text .. message('sandbox-notice-diff-blurb', {pagetype, templateLink, compareLink})
	end
	-- Get the test cases page blurb if the page exists. This is something like
	-- "See also the companion subpage for [[Template:Foo/testcases|test cases]]."
	local testcasesTitle = env.testcasesTitle
	if testcasesTitle and testcasesTitle.exists then
		if testcasesTitle.contentModel == "Scribunto" then
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesRunLinkDisplay = message('sandbox-notice-testcases-run-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
			text = text .. '<br />' .. message('sandbox-notice-testcases-run-blurb', {testcasesLink, testcasesRunLink})
		else
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			text = text .. '<br />' .. message('sandbox-notice-testcases-blurb', {testcasesLink})
		end
	end
	-- Add the sandbox to the sandbox category.
	text = text .. makeCategoryLink(message('sandbox-category'))
	omargs.text = text
	omargs.class = message('sandbox-class')
	return messageBox.main('ombox', omargs)
end

function p.protectionTemplate(env)
	-- Generates the padlock icon in the top right.
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- Messages:
	-- 'protection-template' --> 'pp-template'
	-- 'protection-template-args' --> {docusage = 'yes'}
	local title = env.title
	local protectionLevels
	local protectionTemplate = message('protection-template')
	local namespace = title.namespace
	if not (protectionTemplate and (namespace == 10 or namespace == 828)) then
		-- Don't display the protection template if we are not in the template or module namespaces.
		return nil
	end
	protectionLevels = env.protectionLevels
	if not protectionLevels then
		return nil
	end
	local editLevels = protectionLevels.edit
	local moveLevels = protectionLevels.move
	if moveLevels and moveLevels[1] == 'sysop' or editLevels and editLevels[1] then
		-- The page is full-move protected, or full, template, or semi-protected.
		local frame = mw.getCurrentFrame()
		return frame:expandTemplate{title = protectionTemplate, args = message('protection-template-args', nil, 'table')}
	else
		return nil
	end
end

----------------------------------------------------------------------------
-- Start box
----------------------------------------------------------------------------

p.startBox = makeInvokeFunc('_startBox')

function p._startBox(args, env)
	--[[
	-- This function generates the start box.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- The actual work is done by p.makeStartBoxLinksData and p.renderStartBoxLinks which make
	-- the [view] [edit] [history] [purge] links, and by p.makeStartBoxData and p.renderStartBox
	-- which generate the box HTML.
	--]]
	env = env or p.getEnvironment(args)
	local links
	local content = args.content
	if not content then
		-- No need to include the links if the documentation is on the template page itself.
		local linksData = p.makeStartBoxLinksData(args, env)
		if linksData then
			links = p.renderStartBoxLinks(linksData)
		end
	end
	-- Generate the start box html.
	local data = p.makeStartBoxData(args, env, links)
	if data then
		return p.renderStartBox(data)
	else
		-- User specified no heading.
		return nil
	end
end

function p.makeStartBoxLinksData(args, env)
	--[[
	-- Does initial processing of data to make the [view] [edit] [history] [purge] links.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'view-link-display' --> 'view'
	-- 'edit-link-display' --> 'edit'
	-- 'history-link-display' --> 'history'
	-- 'purge-link-display' --> 'purge'
	-- 'file-docpage-preload' --> 'Template:Documentation/preload-filespace'
	-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
	-- 'docpage-preload' --> 'Template:Documentation/preload'
	-- 'create-link-display' --> 'create'
	--]]
	local subjectSpace = env.subjectSpace
	local title = env.title
	local docTitle = env.docTitle
	if not title or not docTitle then
		return nil
	end
	if docTitle.isRedirect then 
		docTitle = docTitle.redirectTarget
	end

	local data = {}
	data.title = title
	data.docTitle = docTitle
	-- View, display, edit, and purge links if /doc exists.
	data.viewLinkDisplay = i18n['view-link-display']
	data.editLinkDisplay = i18n['edit-link-display']
	data.historyLinkDisplay = i18n['history-link-display']
	data.purgeLinkDisplay = i18n['purge-link-display']
	-- Create link if /doc doesn't exist.
	local preload = args.preload
	if not preload then
		if subjectSpace == 6 then -- File namespace
			preload = message('file-docpage-preload')
		elseif subjectSpace == 828 then -- Module namespace
			preload = message('module-preload')
		else
			preload = message('docpage-preload')
		end
	end
	data.preload = preload
	data.createLinkDisplay = i18n['create-link-display']
	return data
end

function p.renderStartBoxLinks(data)
	--[[
	-- Generates the [view][edit][history][purge] or [create] links from the data table.
	-- @data - a table of data generated by p.makeStartBoxLinksData
	--]]
	
	local function escapeBrackets(s)
		-- Escapes square brackets with HTML entities.
		return s
		    :gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
		    :gsub('%]', '&#93;')
	end

	local ret
	local docTitle = data.docTitle
	local title = data.title
	if docTitle.exists then
		local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay)
		local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
		local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
		local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
		ret = '[%s] [%s] [%s] [%s]'
		ret = escapeBrackets(ret)
		ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
	else
		local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay)
		ret = '[%s]'
		ret = escapeBrackets(ret)
		ret = mw.ustring.format(ret, createLink)
	end
	return ret
end

function p.makeStartBoxData(args, env, links)
	--[=[
	-- Does initial processing of data to pass to the start-box render function, p.renderStartBox.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- @links - a string containing the [view][edit][history][purge] links - could be nil if there's an error.
	--
	-- Messages:
	-- 'documentation-icon-wikitext' --> '[[File:Test Template Info-Icon - Version (2).svg|50px|link=|alt=Documentation icon]]'
	-- 'template-namespace-heading' --> 'Template documentation'
	-- 'module-namespace-heading' --> 'Module documentation'
	-- 'file-namespace-heading' --> 'Summary'
	-- 'other-namespaces-heading' --> 'Documentation'
	-- 'start-box-linkclasses' --> 'mw-editsection-like plainlinks'
	-- 'start-box-link-id' --> 'doc_editlinks'
	-- 'testcases-create-link-display' --> 'create'
	--]=]
	local subjectSpace = env.subjectSpace
	if not subjectSpace then
		-- Default to an "other namespaces" namespace, so that we get at least some output
		-- if an error occurs.
		subjectSpace = 2
	end
	local data = {}
	
	-- Heading
	local heading = args.heading -- Blank values are not removed.
	if heading == '' then
		-- Don't display the start box if the heading arg is defined but blank.
		return nil
	end
	if heading then
		data.heading = heading
	elseif subjectSpace == 10 then -- Template namespace
		data.heading = i18n['template-namespace-heading']
	elseif subjectSpace == 828 then -- Module namespace
		data.heading = i18n['module-namespace-heading']
	elseif subjectSpace == 6 then -- File namespace
		data.heading = i18n['file-namespace-heading']
	else
		data.heading = i18n['other-namespaces-heading']
	end
	
	-- Data for the [view][edit][history][purge] or [create] links.
	if links then
		data.linksClass = message('start-box-linkclasses')
		data.linksId = message('start-box-link-id')
		data.links = links
	end
	
	return data
end

function p.renderStartBox(data)
	-- Renders the start box html.
	-- @data - a table of data generated by p.makeStartBoxData.
	local sbox = mw.html.create('div')
	sbox
		:addClass(message('header-div-class'))
		:tag('div')
			:addClass(message('heading-div-class'))
			:wikitext(data.heading)
	local links = data.links
	if links then
		sbox
			:tag('div')
				:addClass(data.linksClass)
				:attr('id', data.linksId)
				:wikitext(links)
	end
	return tostring(sbox)
end

----------------------------------------------------------------------------
-- Documentation content
----------------------------------------------------------------------------

p.content = makeInvokeFunc('_content')

function p._content(args, env)
	-- Displays the documentation contents
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	env = env or p.getEnvironment(args)
	local docTitle = env.docTitle
	local content = args.content
	if not content and docTitle and docTitle.exists then
		content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle}
	end
	-- The line breaks below are necessary so that "=== Headings ===" at the start and end
	-- of docs are interpreted correctly.
	local cbox = mw.html.create('div')
	cbox
		:addClass(message('content-div-class'))
		:wikitext('\n' .. (content or '') .. '\n')
	return tostring(cbox)
end

p.contentTitle = makeInvokeFunc('_contentTitle')

function p._contentTitle(args, env)
	env = env or p.getEnvironment(args)
	local docTitle = env.docTitle
	if not args.content and docTitle and docTitle.exists then
		return docTitle.prefixedText
	else
		return ''
	end
end

----------------------------------------------------------------------------
-- End box
----------------------------------------------------------------------------

p.endBox = makeInvokeFunc('_endBox')

function p._endBox(args, env)
	--[=[
	-- This function generates the end box (also known as the link box).
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	--]=]
	
	-- Get environment data.
	env = env or p.getEnvironment(args)
	local subjectSpace = env.subjectSpace
	local docTitle = env.docTitle
	if not subjectSpace or not docTitle then
		return nil
	end
		
	-- Check whether we should output the end box at all. Add the end
	-- box by default if the documentation exists or if we are in the
	-- user, module or template namespaces.
	local linkBox = args['link box']
	if linkBox == 'off'
		or not (
			docTitle.exists
			or subjectSpace == 2
			or subjectSpace == 828
			or subjectSpace == 10
		)
	then
		return nil
	end

	-- Assemble the footer text field.
	local text = ''
	if linkBox then
		text = text .. linkBox
	else
		text = text .. (p.makeDocPageBlurb(args, env) or '') -- "This documentation is transcluded from [[Foo]]." 
		if subjectSpace == 2 or subjectSpace == 10 or subjectSpace == 828 then
			-- We are in the user, template or module namespaces.
			-- Add sandbox and testcases links.
			-- "Editors can experiment in this template's sandbox and testcases pages."
			text = text .. (p.makeExperimentBlurb(args, env) or '')
			text = text .. '<br />'
			if not args.content and not args[1] then
				-- "Please add categories to the /doc subpage."
				-- Don't show this message with inline docs or with an explicitly specified doc page,
				-- as then it is unclear where to add the categories.
				text = text .. (p.makeCategoriesBlurb(args, env) or '')
			end
			text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
			local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
			if printBlurb then
				text = text .. '<br />' .. printBlurb
			end
		end
	end

	local ebox = mw.html.create('div')
	ebox
		:addClass(message('footer-div-class'))
		:wikitext(text)
	return tostring(ebox)
end

function p.makeDocPageBlurb(args, env)
	--[=[
	-- Makes the blurb "This documentation is transcluded from [[Template:Foo]] (edit, history)".
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'edit-link-display' --> 'edit'
	-- 'history-link-display' --> 'history'
	-- 'transcluded-from-blurb' --> 
	-- 'The above [[w:Wikipedia:Template documentation|documentation]] 
	-- is [[w:Wikipedia:Transclusion|transcluded]] from $1.'
	-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
	-- 'create-link-display' --> 'create'
	-- 'create-module-doc-blurb' -->
	-- 'You might want to $1 a documentation page for this [[w:Wikipedia:Lua|Scribunto module]].'
	--]=]
	local docTitle = env.docTitle
	if not docTitle or args.content then
		return nil
	end
	local ret
	if docTitle.exists then
		-- /doc exists; link to it.
		local docLink = makeWikilink(docTitle.prefixedText)
		local editUrl = docTitle:fullUrl{action = 'edit'}
		local editDisplay = i18n['edit-link-display']
		local editLink = makeUrlLink(editUrl, editDisplay)
		local historyUrl = docTitle:fullUrl{action = 'history'}
		local historyDisplay = i18n['history-link-display']
		local historyLink = makeUrlLink(historyUrl, historyDisplay)
		ret = message('transcluded-from-blurb', {docLink})
			.. ' '
			.. makeToolbar(editLink, historyLink)
			.. '<br />'
	elseif env.subjectSpace == 828 then
		-- /doc does not exist; ask to create it.
		local createUrl = docTitle:fullUrl{action = 'edit', preload = message('module-preload')}
		local createDisplay = i18n['create-link-display']
		local createLink = makeUrlLink(createUrl, createDisplay)
		ret = message('create-module-doc-blurb', {createLink})
			.. '<br />'
	end
	return ret
end

function p.makeExperimentBlurb(args, env)
	--[[
	-- Renders the text "Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages."
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'sandbox-link-display' --> 'sandbox'
	-- 'sandbox-edit-link-display' --> 'edit'
	-- 'compare-link-display' --> 'diff'
	-- 'module-sandbox-preload' --> 'Template:Documentation/preload-module-sandbox'
	-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
	-- 'sandbox-create-link-display' --> 'create'
	-- 'mirror-edit-summary' --> 'Create sandbox version of $1'
	-- 'mirror-link-display' --> 'mirror'
	-- 'mirror-link-preload' --> 'Template:Documentation/mirror'
	-- 'sandbox-link-display' --> 'sandbox'
	-- 'testcases-link-display' --> 'testcases'
	-- 'testcases-edit-link-display'--> 'edit'
	-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
	-- 'testcases-create-link-display' --> 'create'
	-- 'testcases-link-display' --> 'testcases'
	-- 'testcases-edit-link-display' --> 'edit'
	-- 'module-testcases-preload' --> 'Template:Documentation/preload-module-testcases'
	-- 'template-testcases-preload' --> 'Template:Documentation/preload-testcases'
	-- 'experiment-blurb-module' --> 'Editors can experiment in this module's $1 and $2 pages.'
	-- 'experiment-blurb-template' --> 'Editors can experiment in this template's $1 and $2 pages.'
	--]]
	local subjectSpace = env.subjectSpace
	local templateTitle = env.templateTitle
	local sandboxTitle = env.sandboxTitle
	local testcasesTitle = env.testcasesTitle
	local templatePage = templateTitle.prefixedText
	if not subjectSpace or not templateTitle or not sandboxTitle or not testcasesTitle then
		return nil
	end
	-- Make links.
	local sandboxLinks, testcasesLinks
	if sandboxTitle.exists then
		local sandboxPage = sandboxTitle.prefixedText
		local sandboxDisplay = message('sandbox-link-display')
		local sandboxLink = makeWikilink(sandboxPage, sandboxDisplay)
		local sandboxEditUrl = sandboxTitle:fullUrl{action = 'edit'}
		local sandboxEditDisplay = message('sandbox-edit-link-display')
		local sandboxEditLink = makeUrlLink(sandboxEditUrl, sandboxEditDisplay)
		local compareUrl = env.compareUrl
		local compareLink
		if compareUrl then
			local compareDisplay = message('compare-link-display')
			compareLink = makeUrlLink(compareUrl, compareDisplay)
		end
		sandboxLinks = sandboxLink .. ' ' .. makeToolbar(sandboxEditLink, compareLink)
	else
		local sandboxPreload
		if subjectSpace == 828 then
			sandboxPreload = message('module-sandbox-preload')
		else
			sandboxPreload = message('template-sandbox-preload')
		end
		local sandboxCreateUrl = sandboxTitle:fullUrl{action = 'edit', preload = sandboxPreload}
		local sandboxCreateDisplay = message('sandbox-create-link-display')
		local sandboxCreateLink = makeUrlLink(sandboxCreateUrl, sandboxCreateDisplay)
		local mirrorSummary = message('mirror-edit-summary', {makeWikilink(templatePage)})
		local mirrorPreload = message('mirror-link-preload')
		local mirrorUrl = sandboxTitle:fullUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
		local mirrorDisplay = message('mirror-link-display')
		local mirrorLink = makeUrlLink(mirrorUrl, mirrorDisplay)
		sandboxLinks = message('sandbox-link-display') .. ' ' .. makeToolbar(sandboxCreateLink, mirrorLink)
	end
	if testcasesTitle.exists then
		local testcasesPage = testcasesTitle.prefixedText
		local testcasesDisplay = message('testcases-link-display')
		local testcasesLink = makeWikilink(testcasesPage, testcasesDisplay)
		local testcasesEditUrl = testcasesTitle:fullUrl{action = 'edit'}
		local testcasesEditDisplay = message('testcases-edit-link-display')
		local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay)
		testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
	else
		local testcasesPreload
		if subjectSpace == 828 then
			testcasesPreload = message('module-testcases-preload')
		else
			testcasesPreload = message('template-testcases-preload')
		end
		local testcasesCreateUrl = testcasesTitle:fullUrl{action = 'edit', preload = testcasesPreload}
		local testcasesCreateDisplay = message('testcases-create-link-display')
		local testcasesCreateLink = makeUrlLink(testcasesCreateUrl, testcasesCreateDisplay)
		testcasesLinks = message('testcases-link-display') .. ' ' .. makeToolbar(testcasesCreateLink)
	end
	local messageName
	if subjectSpace == 828 then
		messageName = 'experiment-blurb-module'
	else
		messageName = 'experiment-blurb-template'
	end
	return message(messageName, {sandboxLinks, testcasesLinks})
end

function p.makeCategoriesBlurb(args, env)
	--[[
	-- Generates the text "Please add categories to the /doc subpage."
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- Messages:
	-- 'doc-link-display' --> '/doc'
	-- 'add-categories-blurb' --> 'Please add categories to the $1 subpage.'
	--]]
	local docTitle = env.docTitle
	if not docTitle then
		return nil
	end
	local docPathLink = makeWikilink(docTitle.prefixedText, message('doc-link-display'))
	return message('add-categories-blurb', {docPathLink})
end

function p.makeSubpagesBlurb(args, env)
	--[[
	-- Generates the "Subpages of this template" link.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	
	-- Messages:
	-- 'template-pagetype' --> 'template'
	-- 'module-pagetype' --> 'module'
	-- 'default-pagetype' --> 'page'
	-- 'subpages-link-display' --> 'Subpages of this $1'
	--]]
	local subjectSpace = env.subjectSpace
	local templateTitle = env.templateTitle
	if not subjectSpace or not templateTitle then
		return nil
	end
	local pagetype
	if subjectSpace == 10 then
		pagetype = message('template-pagetype')
	elseif subjectSpace == 828 then
		pagetype = message('module-pagetype')
	else
		pagetype = message('default-pagetype')
	end
	local subpagesLink = makeWikilink(
		'Special:PrefixIndex/' .. templateTitle.prefixedText .. '/',
		message('subpages-link-display', {pagetype})
	)
	return message('subpages-blurb', {subpagesLink})
end

function p.makePrintBlurb(args, env)
	--[=[
	-- Generates the blurb displayed when there is a print version of the template available.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	--
	-- Messages:
	-- 'print-link-display' --> '/Print'
	-- 'print-blurb' --> 'A [[Help:Books/for experts#Improving the book layout|print version]]'
	--		.. ' of this template exists at $1.'
	--		.. ' If you make a change to this template, please update the print version as well.'
	-- 'display-print-category' --> true
	-- 'print-category' --> 'Templates with print versions'
	--]=]
	local printTitle = env.printTitle
	if not printTitle then
		return nil
	end
	local ret
	if printTitle.exists then
		local printLink = makeWikilink(printTitle.prefixedText, message('print-link-display'))
		ret = message('print-blurb', {printLink})
		local displayPrintCategory = message('display-print-category', nil, 'boolean')
		if displayPrintCategory then
			ret = ret .. makeCategoryLink(message('print-category'))
		end
	end
	return ret
end

----------------------------------------------------------------------------
-- Tracking categories
----------------------------------------------------------------------------

function p.addTrackingCategories(env)
	--[[
	-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	
	-- Messages:
	-- 'display-strange-usage-category' --> true
	-- 'doc-subpage' --> 'doc'
	-- 'testcases-subpage' --> 'testcases'
	-- 'strange-usage-category' --> 'Wikipedia pages with strange ((documentation)) usage'
	-- 
	-- /testcases pages in the module namespace are not categorised, as they may have
	-- {{documentation}} transcluded automatically.
	--]]
	local title = env.title
	local subjectSpace = env.subjectSpace
	if not title or not subjectSpace then
		return nil
	end
	local subpage = title.subpageText
	local ret = ''
	if message('display-strange-usage-category', nil, 'boolean')
		and (
			subpage == message('doc-subpage')
			or subjectSpace ~= 828 and subpage == message('testcases-subpage')
		)
	then
		ret = ret .. makeCategoryLink(message('strange-usage-category'))
	end
	return ret
end

return p