Difference between revisions of "Module:Documentation"

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en>Mr. Stradivarius
(add functions for rendering start box links and for making the start box link data)
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-- Get required modules.
-- Get required modules.
local getArgs = require('Module:Arguments').getArgs
local getArgs = require('Module:Arguments').getArgs
local htmlBuilder = require('Module:HtmlBuilder')
local messageBox = require('Module:Message box')
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 = {}


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


----------------------------------------------------------------------------
----------------------------------------------------------------------------
Line 21: Line 20:
----------------------------------------------------------------------------
----------------------------------------------------------------------------


local function message(cfgKey, expectType, valArray)
local function message(cfgKey, valArray, expectType)
--[[
--[[
-- Gets a message from the cfg table and formats it if appropriate.
-- 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
-- The function raises an error if the value from the cfg table is not
-- of the type expectType.
-- 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
-- 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.
-- message are substituted with values from the table keys [1], [2] etc.
-- For example, if the message cfg.fooMessage had the value 'Foo $2 bar $1.',
-- For example, if the message "foo-message" had the value 'Foo $2 bar $1.',
-- message('fooMessage', 'string', {'baz', 'qux'}) would return "Foo qux bar baz."
-- message('foo-message', {'baz', 'qux'}) would return "Foo qux bar baz."
--]]
--]]
local msg = cfg[cfgKey]
local msg = cfg[cfgKey]
if expectType and type(msg) ~= expectType then
expectType = expectType or 'string'
error('message: type error in message cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)
if type(msg) ~= expectType then
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 41: 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


local ret = gsub(msg, '$([1-9][0-9]*)', getMessageVal)
local ret = ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
return ret
return ret
end
end
Line 86: Line 86:


p.makeToolbar = makeToolbar
p.makeToolbar = makeToolbar
local function err(msg)
return string.format(
'<strong class="error">[[Module:Documentation]] error: %s</strong>%s',
msg,
makeCategoryLink('Documentation template invocations with errors')
)
end
p.err = err


----------------------------------------------------------------------------
----------------------------------------------------------------------------
Line 103: Line 93:
local function makeInvokeFunc(funcName)
local function makeInvokeFunc(funcName)
return function (frame)
return function (frame)
local headingArg = message('headingArg', 'string')
local args = getArgs(frame, {
local args = getArgs(frame, {
valueFunc = function (key, value)
valueFunc = function (key, value)
if type(value) == 'string' then
if type(value) == 'string' then
value = value:match('^%s*(.-)%s*$') -- Remove whitespace.
value = value:match('^%s*(.-)%s*$') -- Remove whitespace.
if key == headingArg or value ~= '' then
if key == 'heading' or value ~= '' then
return value
return value
else
else
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return p[funcName](args)
return p[funcName](args)
end
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
end


Line 125: Line 124:
-- Main function
-- Main function
----------------------------------------------------------------------------
----------------------------------------------------------------------------
p.main = makeInvokeFunc('_main')


function p._main(args)
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 env = p.getEnvironment(args)
local root = htmlBuilder.create()
local root = mw.html.create()
root
root
.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
-- This div tag is from {{documentation/start box}}, but moving it here
-- so that we don't have to worry about unclosed tags.
-- so that we don't have to worry about unclosed tags.
.tag('div')
:tag('div')
.attr('id', message('mainDivId', 'string'))
:attr('id', message('main-div-id'))
.addClass(message('mainDivClasses', 'string'))
:addClass(message('main-div-class'))
.newline()
:wikitext(p._startBox(args, env))
.wikitext(p._startBox(args, env))
:wikitext(p._content(args, env))
.wikitext(p._content(args, env))
:done()
.tag('div')
:wikitext(p._endBox(args, env))
.css('clear', 'both') -- So right or left floating items don't stick out of the doc box.
:wikitext(p.addTrackingCategories(env))
.newline()
.done()
.done()
.wikitext(p._endBox(args, env))
.newline()
.wikitext(p.addTrackingCategories(env))
return tostring(root)
return tostring(root)
end
end
Line 158: Line 157:


function p.getEnvironment(args)
function p.getEnvironment(args)
-- Returns a table with information about the environment, including the title to use, the subject namespace, etc.
--[[
-- This is called from p._main using pcall in case we get any errors from exceeding the expensive function count
-- Returns a table with information about the environment, including title objects and other namespace- or
-- limit, or other perils unknown.
-- 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:
-- Data includes:
-- env.title - the title object of the page we are making documentation for (usually the current title)
-- env.protectionLevels - the protection levels table of the title object.
-- env.subjectSpace - the number of the title's subject namespace.
-- env.subjectSpace - the number of the title's subject namespace.
-- env.docspace - the name of the namespace the title puts its documentation in.
-- env.docSpace - the number of the namespace the title puts its documentation in.
-- env.templatePage - the name of the template page with no namespace or interwiki prefixes.
-- 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 = {}, {}
local env, envFuncs = {}, {}


-- Set up the metatable. If a nil value is called, we call that function in the envFuncs table and memoize it
-- Set up the metatable. If triggered we call the corresponding function in the envFuncs table. The value
-- in the env table so we don't have to call any of the functions more than once.
-- 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, {
setmetatable(env, {
__index = function (t, key)
__index = function (t, key)
local envFunc = envFuncs[key]
local envFunc = envFuncs[key]
if envFunc then
if envFunc then
local val = envFunc()
local success, val = pcall(envFunc)
env[key] = val
if success then
return val
env[key] = val -- Memoise the value.
else
return val
return nil
end
end
end
return nil
end
end
})
})


-- Get the title.
function envFuncs.title()
function envFuncs.title()
-- The title object for the current page, or a test page passed with args.page.
local title
local title
local titleArg = args[message('titleArg', 'string')]
local titleArg = args.page
if titleArg then
if titleArg then
title = mw.title.new(titleArg)
title = mw.title.new(titleArg)
if not title then
error(message('titleArgError', 'string', {titleArg}))
end
else
else
title = mw.title.getCurrentTitle()
title = mw.title.getCurrentTitle()
Line 199: Line 212:
end
end


-- Get the subject namespace number.
function envFuncs.templateTitle()
function envFuncs.subjectSpace()
--[[
return mw.site.namespaces[env.title.namespace].subject.id
-- The template (or module, etc.) title object.
end
-- Messages:
-- 'sandbox-subpage' --> 'sandbox'
-- Get the name of the documentation namespace.
-- 'testcases-subpage' --> 'testcases'
function envFuncs.docspace()
--]]
local subjectSpace = env.subjectSpace
local subjectSpace = env.subjectSpace
if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
-- Pages in the Article, File, MediaWiki or Category namespaces must have their
-- /doc, /sandbox and /testcases pages in talk space.
return mw.site.namespaces[subjectSpace].talk.name
else
return env.title.subjectNsText
end
end
-- Get the template page with no namespace or interwiki prefixes.
function envFuncs.templatePage()
local title = env.title
local title = env.title
local subpage = title.subpageText
local subpage = title.subpageText
if subpage == message('sandboxSubpage', 'string') or subpage == message('testcasesSubpage', 'string') then
if subpage == message('sandbox-subpage') or subpage == message('testcases-subpage') then
return title.baseText
return mw.title.makeTitle(subjectSpace, title.baseText)
else
else
return title.text
return mw.title.makeTitle(subjectSpace, title.text)
end
end
end
end


function envFuncs.docTitle()
function envFuncs.docTitle()
--[[
-- Title object of the /doc subpage.
-- Messages:
-- 'doc-subpage' --> 'doc'
--]]
local title = env.title
local title = env.title
local docname = args[1] -- Other docname, if fed.
local docname = args[1] -- User-specified doc page.
local docspace = env.docspace
local templatePage = env.templatePage
local docpage
local docpage
if docname then
if docname then
docpage = docname
docpage = docname
else
else
local namespace = docspace or title.nsText
docpage = env.docpageBase .. '/' .. message('doc-subpage')
local pagename = templatePage or title.text
docpage = namespace .. ':' .. pagename .. '/' .. message('docSubpage', 'string')
end
end
return mw.title.new(docpage)
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
end


function env:grab(key)
function envFuncs.subjectSpace()
local success, val = pcall(function() return self[key] end)
-- The subject namespace number.
return success, val
return mw.site.namespaces[env.title.namespace].subject.id
end
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
return env
Line 256: Line 328:


function p.sandboxNotice(args, env)
function p.sandboxNotice(args, env)
local sandboxNoticeTemplate = message('sandboxNoticeTemplate', 'string')
--[=[
if not (sandboxNoticeTemplate and env.title.subpageText == message('sandboxSubpage', 'string')) then
-- 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
return nil
end
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 frame = mw.getCurrentFrame()
local notice = htmlBuilder.create()
local isPreviewing = frame:preprocess('{{REVISIONID}}') == '' -- True if the page is being previewed.
notice
local pagetype
.tag('div')
if subjectSpace == 10 then
.css('clear', 'both')
pagetype = message('sandbox-notice-pagetype-template')
.done()
elseif subjectSpace == 828 then
.wikitext(frame:expandTemplate{title = sandboxNoticeTemplate, args = {[message('sandboxNoticeLivepageParam')] = args[message('livepageArg', 'string')]}})
pagetype = message('sandbox-notice-pagetype-module')
return tostring(notice)
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')
local ret = '<div style="clear: both;"></div>'
ret = ret .. messageBox.main('ombox', omargs)
return ret
end
end


function p.protectionTemplate(env)
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 title = env.title
local protectionTemplate = message('protectionTemplate', 'string')
local protectionLevels
if not (protectionTemplate and title.namespace == 10) then
local protectionTemplate = message('protection-template')
-- Don't display the protection template if we are not in the template namespace.
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
return nil
end
end
local frame = mw.getCurrentFrame()
protectionLevels = env.protectionLevels
local function getProtectionLevel(protectionType, page)
if not protectionLevels then
-- Gets the protection level for page, or for the current page if page is not specified.
return nil
local level = frame:callParserFunction('PROTECTIONLEVEL', protectionType, page)
if level ~= '' then
return level
else
return nil -- The parser function returns the blank string if there is no match.
end
end
end
local prefixedTitle = title.prefixedText
local editLevels = protectionLevels.edit
if getProtectionLevel('move', prefixedTitle) == 'sysop' or getProtectionLevel('edit', prefixedTitle) then
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.
-- The page is full-move protected, or full, template, or semi-protected.
return frame:expandTemplate{title = protectionTemplate, args = message('protectionTemplateArgs', 'table')}
local frame = mw.getCurrentFrame()
return frame:expandTemplate{title = protectionTemplate, args = message('protection-template-args', nil, 'table')}
else
return nil
end
end
return nil
end
end


Line 302: Line 438:


function p._startBox(args, env)
function p._startBox(args, env)
local title = env.title
--[[
local subjectSpace = env.subjectSpace
-- This function generates the start box.
 
-- @args - a table of arguments passed by the user
-- Arg processing from {{documentation}}.
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
local preload = args[message('preloadArg', 'string')] -- Allow custom preloads.
--
local heading = args[message('headingArg', 'string')] -- Blank values are not removed.
-- The actual work is done by p.makeStartBoxLinksData and p.renderStartBoxLinks which make
local headingStyle = args[message('headingStyleArg', 'string')]
-- the [view] [edit] [history] [purge] links, and by p.makeStartBoxData and p.renderStartBox
local content = args[message('contentArg', 'string')]
-- which generate the box HTML.
local docspace = env.docspace
--]]
local docname = args[1] -- Other docname, if fed.
env = env or p.getEnvironment(args)
local templatePage = env.templatePage
local links
 
local content = args.content
-- Arg processing from {{documentation/start box2}}.
if not content then
local docpage
-- No need to include the links if the documentation is on the template page itself.
if docname then
local linksData = p.makeStartBoxLinksData(args, env)
docpage = docname
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
else
local namespace = docspace or title.nsText
-- User specified no heading.
local pagename = templatePage or title.text
return nil
docpage = namespace .. ':' .. pagename .. '/' .. message('docSubpage', 'string')
end
end
local docTitle = mw.title.new(docpage)
end
local docExist = docTitle.exists
-- Output from {{documentation/start box}}.


-- First, check the heading parameter.
function p.makeStartBoxLinksData(args, env)
if heading == '' then
--[[
-- Heading is defined but blank, so do nothing.
-- 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
return nil
end
end
 
if docTitle.isRedirect then  
-- Build the start box div.
docTitle = docTitle.redirectTarget
local sbox = htmlBuilder.create('div')
sbox
.css('padding-bottom', '3px')
.css('border-bottom', '1px solid #aaa')
.css('margin-bottom', '1ex')
.newline()
 
-- Make the heading.
local hspan = sbox.tag('span')
if headingStyle then
hspan.cssText(headingStyle)
elseif subjectSpace == 10 then
-- We are in the template or template talk namespaces.
hspan
.css('font-weight', 'bold')
.css('font-size', '125%')
else
hspan.css('font-size', '150%')
end
if heading then
-- "heading" has data.
hspan.wikitext(heading)
elseif subjectSpace == 10 then -- Template namespace
hspan.wikitext(message('documentationIconWikitext', 'string') .. ' ' .. message('templateNamespaceHeading', 'string'))
elseif subjectSpace == 828 then -- Module namespace
hspan.wikitext(message('documentationIconWikitext', 'string') .. ' ' .. message('moduleNamespaceHeading', 'string'))
elseif subjectSpace == 6 then -- File namespace
hspan.wikitext(message('fileNamespaceHeading', 'string'))
else
hspan.wikitext(message('otherNamespacesHeading', 'string'))
end
end


-- Add the [view][edit][history][purge] or [create] links.
-- Check for the content parameter first, as we don't need the links if the documentation
-- content is being entered directly onto the template page.
if not content then
local lspan = sbox.tag('span') -- lspan is short for "link span".
lspan
.addClass(message('startBoxLinkclasses', 'string'))
.attr('id', message('startBoxLinkId', 'string'))
if docExist then
local viewLink = makeWikilink(docpage, message('viewLinkDisplay', 'string'))
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, message('editLinkDisplay', 'string'))
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, message('historyLinkDisplay', 'string'))
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, message('purgeLinkDisplay', 'string'))
local text = '[%s] [%s] [%s] [%s]'
text = text:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
text = text:gsub('%]', '&#93;')
lspan.wikitext(mw.ustring.format(text, viewLink, editLink, historyLink, purgeLink))
else
if not preload then
if subjectSpace == 6 then -- File namespace
preload = message('fileDocpagePreload', 'string')
else
preload = message('docpagePreload', 'string')
end
end
lspan.wikitext(makeUrlLink(docTitle:fullUrl{action = 'edit', preload = preload}, message('createLinkDisplay', 'string')))
end
end
return tostring(sbox)
end
function p.makeStartBoxLinksData(args, env)
local data = {}
local data = {}
-- Get title objects.
data.title = title
local titleSuccess, title = env:grab('title')
data.docTitle = docTitle
if titleSuccess then
data.title = title
else
return err(title)
end
local docTitleSuccess, docTitle = env:grab('docTitle')
if docTitleSuccess then
data.docTitle = docTitle
else
return err(docTitle)
end
-- View, display, edit, and purge links if /doc exists.
-- View, display, edit, and purge links if /doc exists.
data.viewLinkDisplay = message('viewLinkDisplay', 'string')
data.viewLinkDisplay = i18n['view-link-display']
data.editLinkDisplay = message('editLinkDisplay', 'string')
data.editLinkDisplay = i18n['edit-link-display']
data.historyLinkDisplay = message('historyLinkDisplay', 'string')
data.historyLinkDisplay = i18n['history-link-display']
data.purgeLinkDisplay = message('purgeLinkDisplay', 'string')
data.purgeLinkDisplay = i18n['purge-link-display']
-- Create link if /doc doesn't exist.
-- Create link if /doc doesn't exist.
local preload = args[message('preloadArg', 'string')]
local preload = args.preload
if not preload then
if not preload then
if env.subjectSpace == 6 then -- File namespace
if subjectSpace == 6 then -- File namespace
preload = message('fileDocpagePreload', 'string')
preload = message('file-docpage-preload')
elseif subjectSpace == 828 then -- Module namespace
preload = message('module-preload')
else
else
preload = message('docpagePreload', 'string')
preload = message('docpage-preload')
end
end
end
end
data.preload = preload
data.preload = preload
data.createLinkDisplay = message('createLinkDisplay', 'string')
data.createLinkDisplay = i18n['create-link-display']
return data
return data
end
end


function p.renderStartBoxLinks(data)
function p.renderStartBoxLinks(data)
-- Render the [view][edit][history][purge] or [create] links.
--[[
-- 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.
s = s:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
s = s:gsub('%]', '&#93;')
return s
end
 
local ret
local ret
local docTitle = data.docTitle
local docTitle = data.docTitle
local title = data.title
local title = data.title
if docTitle.exists then
if docTitle.exists then
local viewLink = makeWikilink(docpage, data.viewLinkDisplay)
local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay)
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
ret = '[%s] [%s] [%s] [%s]'
ret = '[%s] [%s] [%s] [%s]'
ret = ret:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
ret = escapeBrackets(ret)
ret = ret:gsub('%]', '&#93;')
ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
else
else
lspan.wikitext(makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay))
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
end
return data
end
end


function p.renderStartBox(data)
function p.renderStartBox(data)
-- Renders the start box html.
-- Renders the start box html.
local sbox = htmlBuilder.create('div')
-- @data - a table of data generated by p.makeStartBoxData.
local sbox = mw.html.create('div')
sbox
sbox
.css('padding-bottom', '3px')
:addClass(message('header-div-class'))
.css('border-bottom', '1px solid #aaa')
:tag('div')
.css('margin-bottom', '1ex')
:addClass(message('heading-div-class'))
.newline()
:wikitext(data.heading)
.tag('span')
local links = data.links
.cssText(data.headingStyleText)
if links then
.css('font-weight', data.headingFontWeight)
sbox
.css('font-size', data.headingFontSize)
:tag('div')
.wikitext(data.heading)
:addClass(data.linksClass)
if data.showLinks then
:attr('id', data.linksId)
sbox.tag('span')
:wikitext(links)
.addClass(data.linksClass)
.attr('id', data.linksId)
.wikitext(data.links)
end
end
return tostring(sbox)
return tostring(sbox)
Line 481: Line 630:


function p._content(args, env)
function p._content(args, env)
local content = args[message('contentArg', 'string')]
-- Displays the documentation contents
if not content then
-- @args - a table of arguments passed by the user
local docpage = args[1]
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
if docpage and mw.title.new(docpage).exists then
env = env or p.getEnvironment(args)
local frame = mw.getCurrentFrame()
local docTitle = env.docTitle
content = frame:preprocess('{{ ' .. docpage .. ' }}')
local content = args.content
else
if not content and docTitle and docTitle.exists then
docpage = env.docspace .. ':' .. env.templatePage .. '/' .. message('docSubpage', 'string')
content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle}
if mw.title.new(docpage).exists then
local frame = mw.getCurrentFrame()
content = frame:preprocess('{{ ' .. docpage .. ' }}')
end
end
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
 
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


Line 507: Line 667:


function p._endBox(args, env)
function p._endBox(args, env)
local title = env.title
--[=[
-- 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 subjectSpace = env.subjectSpace
 
local docTitle = env.docTitle
-- Argument processing in {{documentation}}.
if not subjectSpace or not docTitle then
local content = args[message('contentArg', 'string')]
return nil
local linkBox = args[message('linkBoxArg', 'string')] -- So "link box=off" works.
local docspace = env.docspace
local docname = args[1] -- Other docname, if fed.
local templatePage = env.templatePage
 
-- Argument processing in {{documentation/end box2}}.
local docpageRoot = (docspace or title.nsText) .. ':' .. (templatePage or title.text)
local docpage
if docname then
docpage = docname
else
docpage = docpageRoot .. '/' .. message('docSubpage', 'string')
end
end
local docTitle = mw.title.new(docpage)
local docExist = docTitle.exists
-- Check whether we should output the end box at all. Add the end
local docnameFed = args[1] and true
-- box by default if the documentation exists or if we are in the
local sandbox = docpageRoot .. '/' .. message('sandboxSubpage', 'string')
-- user, module or template namespaces.
local testcases = docpageRoot .. '/' .. message('testcasesSubpage', 'string')
local linkBox = args['link box']
templatePage = title.nsText .. ':' .. templatePage
if linkBox == 'off'
 
or not (
-- Output from {{documentation/end box}}
docTitle.exists
or subjectSpace == 2
-- First, check whether we should output the end box at all. Add the end box by default if the documentation
or subjectSpace == 828
-- exists or if we are in the user, module or template namespaces.
or subjectSpace == 10
if linkBox == message('linkBoxOff', 'string') or not (docExist or subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10) then
)
then
return nil
return nil
end
end


-- Assemble the arguments for {{fmbox}}.
-- Assemble the footer text field.
local fmargs = {}
fmargs[message('fmboxIdParam', 'string')] = message('fmboxId', 'string') -- Sets fmargs.id = 'documentation-meta-data'
fmargs[message('fmboxImageParam', 'string')] = message('fmboxImageNone', 'string') -- Sets fmargs.image = 'none'
fmargs[message('fmboxStyleParam', 'string')] = message('fmboxStyle', 'string') -- Sets fmargs.style = 'background-color: #ecfcf4'
fmargs[message('fmboxTextstyleParam', 'string')] = message('fmboxTextstyle', 'string') -- Sets fmargs.textstyle = 'font-style: italic;'
 
-- Assemble the fmbox text field.
local text = ''
local text = ''
if linkBox then
if linkBox then
-- Use custom link box content if it is defined.
text = text .. linkBox
text = text .. linkBox
else
else
if docExist then
text = text .. (p.makeDocPageBlurb(args, env) or '') -- "This documentation is transcluded from [[Foo]]."
-- /doc exists; link to it.
if subjectSpace == 2 or subjectSpace == 10 or subjectSpace == 828 then
local docLink = makeWikilink(docpage)
-- We are in the user, template or module namespaces.
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, message('editLinkDisplay', 'string'))
-- Add sandbox and testcases links.
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, message('historyLinkDisplay', 'string'))
-- "Editors can experiment in this template's sandbox and testcases pages."
text = text .. message('transcludedFromBlurb', 'string', {docLink}) .. ' ' .. makeToolbar(editLink, historyLink) .. '<br />'
text = text .. (p.makeExperimentBlurb(args, env) or '')
elseif subjectSpace == 828 then
text = text .. '<br />'
-- /doc does not exist; ask to create it.
if not args.content and not args[1] then
local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = message('modulePreload', 'string')}, message('createLinkDisplay', 'string'))
-- "Please add categories to the /doc subpage."
text = text .. message('createModuleDocBlurb', 'string', {createLink}) .. '<br />'
-- Don't show this message with inline docs or with an explicitly specified doc page,
end
-- as then it is unclear where to add the categories.
-- Add links to /sandbox and /testcases when appropriate.
text = text .. (p.makeCategoriesBlurb(args, env) or '')
if subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10 then
-- We are in the user, module or template namespaces.  
local sandboxLinks, testcasesLinks
local pagePossessive = subjectSpace == 828 and message('modulePossessive', 'string') or message('templatePossessive', 'string')
local sandboxTitle = mw.title.new(sandbox)
if sandboxTitle.exists then
local sandboxLink = makeWikilink(sandbox, message('sandboxLinkDisplay', 'string'))
local sandboxEditLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit'}, message('sandboxEditLinkDisplay', 'string'))
local compareLink = makeUrlLink(mw.title.new('Special:ComparePages'):fullUrl{page1 = templatePage, page2 = sandbox}, message('compareLinkDisplay', 'string'))
sandboxLinks = sandboxLink .. ' ' .. makeToolbar(sandboxEditLink, compareLink)
else
local sandboxPreload = subjectSpace == 828 and message('moduleSandboxPreload', 'string') or message('templateSandboxPreload', 'string')
local sandboxCreateLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = sandboxPreload}, message('sandboxCreateLinkDisplay', 'string'))
local mirrorSummary = message('mirrorEditSummary', 'string', {makeWikilink(templatePage)})
local mirrorLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = templatePage, summary = mirrorSummary}, message('mirrorLinkDisplay', 'string'))
sandboxLinks = message('sandboxLinkDisplay', 'string') .. ' ' .. makeToolbar(sandboxCreateLink, mirrorLink)
end
end
local testcaseTitle = mw.title.new(testcases)
text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
if testcaseTitle.exists then
local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
local testcasesLink = makeWikilink(testcases, message('testcasesLinkDisplay', 'string'))
if printBlurb then
local testcasesEditLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit'}, message('testcasesEditLinkDisplay', 'string'))
text = text .. '<br />' .. printBlurb
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
else
local testcasesPreload = subjectSpace == 828 and message('moduleTestcasesPreload', 'string') or message('templateTestcasesPreload', 'string')
local testcasesCreateLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit', preload = testcasesPreload}, message('testcasesCreateLinkDisplay', 'string'))
testcasesLinks = message('testcasesLinkDisplay', 'string') .. ' ' .. makeToolbar(testcasesCreateLink)
end
text = text .. message('experimentBlurb', 'string', {pagePossessive, sandboxLinks, testcasesLinks}) .. '<br />'
-- Show the categories text, but not if "content" fed or "docname fed" since then it is unclear where to add the categories.
if not content and not docnameFed then
local docPathLink = makeWikilink(docpage, message('docLinkDisplay', 'string'))
text = text .. message('addCategoriesBlurb', 'string', {docPathLink})
end
-- Show the "subpages" link.
if subjectSpace ~= 6 then -- Don't show the link in file space.
local pagetype
if subjectSpace == 10 then
pagetype = message('templatePagetype', 'string')
elseif subjectSpace == 828 then
pagetype = message('modulePagetype', 'string')
else
pagetype = message('defaultPagetype', 'string')
end
text = text .. ' ' .. makeWikilink('Special:PrefixIndex/' .. templatePage .. '/', message('subpagesLinkDisplay', 'string', {pagetype}))
end
-- Show the "print" link if it exists.
local printPage = templatePage .. '/' .. message('printSubpage', 'string')
local printTitle = mw.title.new(printPage)
if printTitle.exists then
local printLink = makeWikilink(printPage, message('printLinkDisplay', 'string'))
text = text .. '<br />' .. message('printBlurb', 'string', {printLink})
.. (message('displayPrintCategory', 'boolean') and makeCategoryLink(message('printCategory', 'string')) or '')
end
end
end
end
end
end
fmargs.text = text


-- Return the fmbox output.
local ebox = mw.html.create('div')
return messageBox.main('fmbox', fmargs)
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
end


Line 631: Line 957:


function p.addTrackingCategories(env)
function p.addTrackingCategories(env)
--[[
-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
-- 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 title = env.title
local subjectSpace = env.subjectSpace
if not title or not subjectSpace then
return nil
end
local subpage = title.subpageText
local ret = ''
local ret = ''
local subpage = title.subpageText
if message('display-strange-usage-category', nil, 'boolean')
if message('displayStrangeUsageCategory', 'boolean') and (subpage == message('docSubpage', 'string') or subpage == message('testcasesSubpage', 'string')) then
and (
local sort = (title.namespace == 0 and message('strangeUsageCategoryMainspaceSort', 'string') or '') .. title.prefixedText -- Sort on namespace.
subpage == message('doc-subpage')
ret = ret .. makeCategoryLink(message('strangeUsageCategory', 'string'), sort)
or subjectSpace ~= 828 and subpage == message('testcases-subpage')
)
then
ret = ret .. makeCategoryLink(message('strange-usage-category'))
end
end
return ret
return ret

Latest revision as of 05:36, 19 July 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 style="font-style: normal;">(' .. 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')
	local ret = '<div style="clear: both;"></div>'
	ret = ret .. messageBox.main('ombox', omargs)
	return ret
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.
		s = s:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
		s = s:gsub('%]', '&#93;')
		return s
	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