Module:Message box

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This is a meta-module that implements the message box templates {{mbox}}, {{ambox}}, {{cmbox}}, {{fmbox}}, {{imbox}}, {{ombox}}, and {{tmbox}}. It is intended to be used from Lua modules, and should not be used directly from wiki pages. If you want to use this module's functionality from a wiki page, please use the individual message box templates instead.

Usage

To use this module from another Lua module, first you need to load it.

localmessageBox=require('Module:Message box')

To create a message box, use the main function. It takes two parameters: the first is the box type (as a string), and the second is a table containing the message box parameters.

localbox=messageBox.main(boxType,{param1=param1,param2=param2,-- More parameters...})

There are seven available box types:

Box type	Template	Purpose
mbox	{{mbox}}	For message boxes to be used in multiple namespaces
ambox	{{ambox}}	For article message boxes
cmbox	{{cmbox}}	For category message boxes
fmbox	{{fmbox}}	For interface message boxes
imbox	{{imbox}}	For file namespace message boxes
tmbox	{{tmbox}}	For talk page message boxes
ombox	{{ombox}}	For message boxes in other namespaces

See the template page of each box type for the available parameters.

Usage from #invoke

As well as the main function, this module has separate functions for each box type. They are accessed using the code {{#invoke:Message box|mbox|...}}, {{#invoke:Message box|ambox|...}}, etc. These will work when called from other modules, but they access code used to process arguments passed from #invoke, and so calling them will be less efficient than calling main.

Technical details

The module uses the same basic code for each of the templates listed above; the differences between each of them are configured using the data at Module:Message box/configuration. Here are the various configuration options and what they mean:

• types – a table containing data used by the type parameter of the message box. The table keys are the values that can be passed to the type parameter, and the table values are tables containing the class and the image used by that type.
• default – the type to use if no value was passed to the type parameter, or if an invalid value was specified.
• showInvalidTypeError – whether to show an error if the value passed to the type parameter was invalid.
• allowBlankParams – usually blank values are stripped from parameters passed to the module. However, whitespace is preserved for the parameters included in the allowBlankParams table.
• allowSmall – whether a small version of the message box can be produced with "small=yes".
• smallParam – a custom name for the small parameter. For example, if set to "left" you can produce a small message box using "small=left".
• smallClass – the class to use for small message boxes.
• substCheck – whether to perform a subst check or not.
• classes – an array of classes to use with the message box.
• imageEmptyCell – whether to use an empty <td>...</td> cell if there is no image set. This is used to preserve spacing for message boxes with a width of less than 100% of the screen.
• imageEmptyCellStyle – whether empty image cells should be styled.
• imageCheckBlank – whether "image=blank" results in no image being displayed.
• imageSmallSize – usually, images used in small message boxes are set to 30x30px. This sets a custom size.
• imageCellDiv – whether to enclose the image in a div enforcing a maximum image size.
• useCollapsibleTextFields – whether to use text fields that can be collapsed, i.e. "issue", "fix", "talk", etc. Currently only used in ambox.
• imageRightNone – whether imageright=none results in no image being displayed on the right-hand side of the message box.
• sectionDefault – the default name for the "section" parameter. Depends on useCollapsibleTextFields.
• allowMainspaceCategories – allow categorisation in the main namespace.
• templateCategory – the name of a category to be placed on the template page.
• templateCategoryRequireName – whether the name parameter is required to display the template category.
• templateErrorCategory – the name of the error category to be used on the template page.
• templateErrorParamsToCheck – an array of parameter names to check. If any are absent, the templateErrorCategory is applied to the template page.

The above documentation is transcluded from Module:Message box/doc. (edit | history)
Editors can experiment in this module's sandbox(edit | diff) and testcases(edit) pages.
Subpages of this module.

require('strict')localgetArgslocalyesno=require('Module:Yesno')locallang=mw.language.getContentLanguage()localCONFIG_MODULE='Module:Message box/configuration'localDEMOSPACES={talk='tmbox',image='imbox',file='imbox',category='cmbox',article='ambox',main='ambox'}---------------------------------------------------------------------------------- Helper functions--------------------------------------------------------------------------------localfunctiongetTitleObject(...)-- Get the title object, passing the function through pcall-- in case we are over the expensive function count limit.localsuccess,title=pcall(mw.title.new,...)ifsuccessthenreturntitleendendlocalfunctionunion(t1,t2)-- Returns the union of two arrays.localvals={}fori,vinipairs(t1)dovals[v]=trueendfori,vinipairs(t2)dovals[v]=trueendlocalret={}forkinpairs(vals)dotable.insert(ret,k)endtable.sort(ret)returnretendlocalfunctiongetArgNums(args,prefix)localnums={}fork,vinpairs(args)dolocalnum=mw.ustring.match(tostring(k),'^'..prefix..'([1-9]%d*)$')ifnumthentable.insert(nums,tonumber(num))endendtable.sort(nums)returnnumsend---------------------------------------------------------------------------------- Box class definition--------------------------------------------------------------------------------localMessageBox={}MessageBox.__index=MessageBoxfunctionMessageBox.new(boxType,args,cfg)args=argsor{}localobj={}-- Set the title object and the namespace.obj.title=getTitleObject(args.page)ormw.title.getCurrentTitle()-- Set the config for our box type.obj.cfg=cfg[boxType]ifnotobj.cfgthenlocalns=obj.title.namespace-- boxType is "mbox" or invalid inputifargs.demospaceandargs.demospace~=''then-- implement demospace parameter of mboxlocaldemospace=string.lower(args.demospace)ifDEMOSPACES[demospace]then-- use template from DEMOSPACESobj.cfg=cfg[DEMOSPACES[demospace]]elseifstring.find(demospace,'talk')then-- demo as a talk pageobj.cfg=cfg.tmboxelse-- default to omboxobj.cfg=cfg.omboxendelseifns==0thenobj.cfg=cfg.ambox-- main namespaceelseifns==6thenobj.cfg=cfg.imbox-- file namespaceelseifns==14thenobj.cfg=cfg.cmbox-- category namespaceelselocalnsTable=mw.site.namespaces[ns]ifnsTableandnsTable.isTalkthenobj.cfg=cfg.tmbox-- any talk namespaceelseobj.cfg=cfg.ombox-- other namespaces or invalid inputendendend-- Set the arguments, and remove all blank arguments except for the ones-- listed in cfg.allowBlankParams.dolocalnewArgs={}fork,vinpairs(args)doifv~=''thennewArgs[k]=vendendfori,paraminipairs(obj.cfg.allowBlankParamsor{})donewArgs[param]=args[param]endobj.args=newArgsend-- Define internal data structure.obj.categories={}obj.classes={}-- For lazy loading of [[Module:Category handler]].obj.hasCategories=falsereturnsetmetatable(obj,MessageBox)endfunctionMessageBox:addCat(ns,cat,sort)ifnotcatthenreturnnilendifsortthencat=string.format('[[Category:%s|%s]]',cat,sort)elsecat=string.format('[[Category:%s]]',cat)endself.hasCategories=trueself.categories[ns]=self.categories[ns]or{}table.insert(self.categories[ns],cat)endfunctionMessageBox:addClass(class)ifnotclassthenreturnnilendtable.insert(self.classes,class)endfunctionMessageBox:setParameters()localargs=self.argslocalcfg=self.cfg-- Get type data.self.type=args.typelocaltypeData=cfg.types[self.type]self.invalidTypeError=cfg.showInvalidTypeErrorandself.typeandnottypeDatatypeData=typeDataorcfg.types[cfg.default]self.typeClass=typeData.classself.typeImage=typeData.imageself.typeImageNeedsLink=typeData.imageNeedsLink-- Find if the box has been wrongly substituted.self.isSubstituted=cfg.substCheckandargs.subst=='SUBST'-- Find whether we are using a small message box.self.isSmall=cfg.allowSmalland(cfg.smallParamandargs.small==cfg.smallParamornotcfg.smallParamandyesno(args.small))-- Add attributes, classes and styles.self.id=args.idself.name=args.nameifself.namethenself:addClass('box-'..string.gsub(self.name,' ','_'))endifyesno(args.plainlinks)~=falsethenself:addClass('plainlinks')endfor_,classinipairs(cfg.classesor{})doself:addClass(class)endifself.isSmallthenself:addClass(cfg.smallClassor'mbox-small')endself:addClass(self.typeClass)self:addClass(args.class)self.style=args.styleself.attrs=args.attrs-- Set text style.self.textstyle=args.textstyle-- Set image classes.self.imageRightClass=args.imagerightclassorargs.imageclassself.imageLeftClass=args.imageleftclassorargs.imageclass-- Find if we are on the template page or not. This functionality is only-- used if useCollapsibleTextFields is set, or if both cfg.templateCategory-- and cfg.templateCategoryRequireName are set.self.useCollapsibleTextFields=cfg.useCollapsibleTextFieldsifself.useCollapsibleTextFieldsorcfg.templateCategoryandcfg.templateCategoryRequireNamethenifself.namethenlocaltemplateName=mw.ustring.match(self.name,'^[tT][eE][mM][pP][lL][aA][tT][eE][%s_]*:[%s_]*(.*)$')orself.nametemplateName='Template:'..templateNameself.templateTitle=getTitleObject(templateName)endself.isTemplatePage=self.templateTitleandmw.title.equals(self.title,self.templateTitle)end-- Process data for collapsible text fields. At the moment these are only-- used in {{ambox}}.ifself.useCollapsibleTextFieldsthen-- Get the self.issue value.ifself.isSmallandargs.smalltextthenself.issue=args.smalltextelselocalsectifargs.sect==''thensect='This '..(cfg.sectionDefaultor'page')elseiftype(args.sect)=='string'thensect='This '..args.sectendlocalissue=args.issueissue=type(issue)=='string'andissue~=''andissueornillocaltext=args.texttext=type(text)=='string'andtextornillocalissues={}table.insert(issues,sect)table.insert(issues,issue)table.insert(issues,text)self.issue=table.concat(issues,' ')end-- Get the self.talk value.localtalk=args.talk-- Show talk links on the template page or template subpages if the talk-- parameter is blank.iftalk==''andself.templateTitleand(mw.title.equals(self.templateTitle,self.title)orself.title:isSubpageOf(self.templateTitle))thentalk='#'elseiftalk==''thentalk=nilendiftalkthen-- If the talk value is a talk page, make a link to that page. Else-- assume that it's a section heading, and make a link to the talk-- page of the current page with that section heading.localtalkTitle=getTitleObject(talk)localtalkArgIsTalkPage=trueifnottalkTitleornottalkTitle.isTalkPagethentalkArgIsTalkPage=falsetalkTitle=getTitleObject(self.title.text,mw.site.namespaces[self.title.namespace].talk.id)endiftalkTitleandtalkTitle.existsthenlocaltalkTextifself.isSmallthenlocaltalkLink=talkArgIsTalkPageandtalkor(talkTitle.prefixedText..(talk=='#'and''or'#')..talk)talkText=string.format('([[%s|talk]])',talkLink)elsetalkText='Relevant discussion may be found on'iftalkArgIsTalkPagethentalkText=string.format('%s [[%s|%s]].',talkText,talk,talkTitle.prefixedText)elsetalkText=string.format('%s the [[%s'..(talk=='#'and''or'#')..'%s|talk page]].',talkText,talkTitle.prefixedText,talk)endendself.talk=talkTextendend-- Get other values.self.fix=args.fix~=''andargs.fixornillocaldateifargs.dateandargs.date~=''thendate=args.dateelseifargs.date==''andself.isTemplatePagethendate=lang:formatDate('F Y')endifdatethenself.date=string.format(" <span class='date-container'><i>(<span class='date'>%s</span>)</i></span>",date)endself.info=args.infoifyesno(args.removalnotice)thenself.removalNotice=cfg.removalNoticeendend-- Set the non-collapsible text field. At the moment this is used by all box-- types other than ambox, and also by ambox when small=yes.ifself.isSmallthenself.text=args.smalltextorargs.textelseself.text=args.textend-- Set the below row.self.below=cfg.belowandargs.below-- General image settings.self.imageCellDiv=notself.isSmallandcfg.imageCellDivself.imageEmptyCell=cfg.imageEmptyCell-- Left image settings.localimageLeft=self.isSmallandargs.smallimageorargs.imageifcfg.imageCheckBlankandimageLeft~='blank'andimageLeft~='none'ornotcfg.imageCheckBlankandimageLeft~='none'thenself.imageLeft=imageLeftifnotimageLeftthenlocalimageSize=self.isSmalland(cfg.imageSmallSizeor'30x30px')or'40x40px'self.imageLeft=string.format('[[File:%s|%s%s|alt=]]',self.typeImageor'Information icon4.svg',imageSize,self.typeImageNeedsLinkand""or"|link=")endend-- Right image settings.localimageRight=self.isSmallandargs.smallimagerightorargs.imagerightifnot(cfg.imageRightNoneandimageRight=='none')thenself.imageRight=imageRightend-- set templatestylesself.base_templatestyles=cfg.templatestylesself.templatestyles=args.templatestylesendfunctionMessageBox:setMainspaceCategories()localargs=self.argslocalcfg=self.cfgifnotcfg.allowMainspaceCategoriesthenreturnnilendlocalnums={}for_,prefixinipairs{'cat','category','all'}doargs[prefix..'1']=args[prefix]nums=union(nums,getArgNums(args,prefix))end-- The following is roughly equivalent to the old {{Ambox/category}}.localdate=args.datedate=type(date)=='string'anddatelocalpreposition='from'for_,numinipairs(nums)dolocalmainCat=args['cat'..tostring(num)]orargs['category'..tostring(num)]localallCat=args['all'..tostring(num)]mainCat=type(mainCat)=='string'andmainCatallCat=type(allCat)=='string'andallCatifmainCatanddateanddate~=''thenlocalcatTitle=string.format('%s %s %s',mainCat,preposition,date)self:addCat(0,catTitle)catTitle=getTitleObject('Category:'..catTitle)ifnotcatTitleornotcatTitle.existsthenself:addCat(0,'Articles with invalid date parameter in template')endelseifmainCatand(notdateordate=='')thenself:addCat(0,mainCat)endifallCatthenself:addCat(0,allCat)endendendfunctionMessageBox:setTemplateCategories()localargs=self.argslocalcfg=self.cfg-- Add template categories.ifcfg.templateCategorythenifcfg.templateCategoryRequireNamethenifself.isTemplatePagethenself:addCat(10,cfg.templateCategory)endelseifnotself.title.isSubpagethenself:addCat(10,cfg.templateCategory)endend-- Add template error categories.ifcfg.templateErrorCategorythenlocaltemplateErrorCategory=cfg.templateErrorCategorylocaltemplateCat,templateSortifnotself.nameandnotself.title.isSubpagethentemplateCat=templateErrorCategoryelseifself.isTemplatePagethenlocalparamsToCheck=cfg.templateErrorParamsToCheckor{}localcount=0fori,paraminipairs(paramsToCheck)doifnotargs[param]thencount=count+1endendifcount>0thentemplateCat=templateErrorCategorytemplateSort=tostring(count)endifself.categoryNumsand#self.categoryNums>0thentemplateCat=templateErrorCategorytemplateSort='C'endendself:addCat(10,templateCat,templateSort)endendfunctionMessageBox:setAllNamespaceCategories()-- Set categories for all namespaces.ifself.invalidTypeErrorthenlocalallSort=(self.title.namespace==0and'Main:'or'')..self.title.prefixedTextself:addCat('all','Wikipedia message box parameter needs fixing',allSort)endifself.isSubstitutedthenself:addCat('all','Pages with incorrectly substituted templates')endendfunctionMessageBox:setCategories()ifself.title.namespace==0thenself:setMainspaceCategories()elseifself.title.namespace==10thenself:setTemplateCategories()endself:setAllNamespaceCategories()endfunctionMessageBox:renderCategories()ifnotself.hasCategoriesthen-- No categories added, no need to pass them to Category handler so,-- if it was invoked, it would return the empty string.-- So we shortcut and return the empty string.return""end-- Convert category tables to strings and pass them through-- [[Module:Category handler]].returnrequire('Module:Category handler')._main{main=table.concat(self.categories[0]or{}),template=table.concat(self.categories[10]or{}),all=table.concat(self.categories.allor{}),nocat=self.args.nocat,page=self.args.page}endfunctionMessageBox:export()localroot=mw.html.create()-- Add the subst check error.ifself.isSubstitutedandself.namethenroot:tag('b'):addClass('error'):wikitext(string.format('Template <code>%s[[Template:%s|%s]]%s</code> has been incorrectly substituted.',mw.text.nowiki('{{'),self.name,self.name,mw.text.nowiki('}}')))endlocalframe=mw.getCurrentFrame()root:wikitext(frame:extensionTag{name='templatestyles',args={src=self.base_templatestyles},})-- Add support for a single custom templatestyles sheet. Undocumented as-- need should be limited and many templates using mbox are substed; we-- don't want to spread templatestyles sheets around to arbitrary placesifself.templatestylesthenroot:wikitext(frame:extensionTag{name='templatestyles',args={src=self.templatestyles},})end-- Create the box table.localboxTable=root:tag('table')boxTable:attr('id',self.idornil)fori,classinipairs(self.classesor{})doboxTable:addClass(classornil)endboxTable:cssText(self.styleornil):attr('role','presentation')ifself.attrsthenboxTable:attr(self.attrs)end-- Add the left-hand image.localrow=boxTable:tag('tr')ifself.imageLeftthenlocalimageLeftCell=row:tag('td'):addClass('mbox-image')ifself.imageCellDivthen-- If we are using a div, redefine imageLeftCell so that the image-- is inside it. Divs use style="width: 52px;", which limits the-- image width to 52px. If any images in a div are wider than that,-- they may overlap with the text or cause other display problems.imageLeftCell=imageLeftCell:tag('div'):addClass('mbox-image-div')endimageLeftCell:addClass(self.imageLeftClass):wikitext(self.imageLeftornil)elseifself.imageEmptyCellthen-- Some message boxes define an empty cell if no image is specified, and-- some don't. The old template code in templates where empty cells are-- specified gives the following hint: "No image. Cell with some width-- or padding necessary for text cell to have 100% width."row:tag('td'):addClass('mbox-empty-cell')end-- Add the text.localtextCell=row:tag('td'):addClass('mbox-text')ifself.useCollapsibleTextFieldsthen-- The message box uses advanced text parameters that allow things to be-- collapsible. At the moment, only ambox uses this.textCell:cssText(self.textstyleornil)localtextCellDiv=textCell:tag('div')textCellDiv:addClass('mbox-text-span'):wikitext(self.issueornil)if(self.talkorself.fix)thentextCellDiv:tag('span'):addClass('hide-when-compact'):wikitext(self.talkand(' '..self.talk)ornil):wikitext(self.fixand(' '..self.fix)ornil)endtextCellDiv:wikitext(self.dateand(' '..self.date)ornil)ifself.infoandnotself.isSmallthentextCellDiv:tag('span'):addClass('hide-when-compact'):wikitext(self.infoand(' '..self.info)ornil)endifself.removalNoticethentextCellDiv:tag('span'):addClass('hide-when-compact'):tag('i'):wikitext(string.format(" (%s)",self.removalNotice))endelse-- Default text formatting - anything goes.textCell:cssText(self.textstyleornil):wikitext(self.textornil)end-- Add the right-hand image.ifself.imageRightthenlocalimageRightCell=row:tag('td'):addClass('mbox-imageright')ifself.imageCellDivthen-- If we are using a div, redefine imageRightCell so that the image-- is inside it.imageRightCell=imageRightCell:tag('div'):addClass('mbox-image-div')endimageRightCell:addClass(self.imageRightClass):wikitext(self.imageRightornil)end-- Add the below row.ifself.belowthenboxTable:tag('tr'):tag('td'):attr('colspan',self.imageRightand'3'or'2'):addClass('mbox-text'):cssText(self.textstyleornil):wikitext(self.belowornil)end-- Add error message for invalid type parameters.ifself.invalidTypeErrorthenroot:tag('div'):addClass('mbox-invalid-type'):wikitext(string.format('This message box is using an invalid "type=%s" parameter and needs fixing.',self.typeor''))end-- Add categories.root:wikitext(self:renderCategories()ornil)returntostring(root)end---------------------------------------------------------------------------------- Exports--------------------------------------------------------------------------------localp,mt={},{}functionp._exportClasses()-- For testing.return{MessageBox=MessageBox}endfunctionp.main(boxType,args,cfgTables)localbox=MessageBox.new(boxType,args,cfgTablesormw.loadData(CONFIG_MODULE))box:setParameters()box:setCategories()returnbox:export()endfunctionmt.__index(t,k)returnfunction(frame)ifnotgetArgsthengetArgs=require('Module:Arguments').getArgsendreturnt.main(k,getArgs(frame,{trim=false,removeBlanks=false}))endendreturnsetmetatable(p,mt)