Module:Listbox

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

local Box = require( 'Module:Box' ).Box
local Lazy = require( 'Module:Lazy' ) -- may load: Tabs, Gallery, Args

function getCategoryProps( categoryName )
  local categoryContent = mw.title.new( categoryName, 'Category' ):getContent()
  local props = {}

  for match in string.gmatch( categoryContent, '{{Prop|([^}]*)}}' ) do
    local prop, value = unpack(mw.text.split( match, '|' ))

    -- table if multiple values, value if one value, true if no values (i.e. flag)
    props[prop] = value and string.match( value, ',' ) and mw.text.split( value, ',' ) or value or true
  end

  return props
end

function getPageGroups( categoryName, getPageProps )
  -- get all pages in the category
  local pages = mw.ext.dpl.getPages{ category = categoryName, ordermethod = 'sortkey', order = 'ascending' }

  -- organize them by group
  local groups = { default = {} }
  for _, page in ipairs( pages ) do
    -- remove extra from sortkey
    if page.extra then page.sortkey = string.sub( page.sortkey, 1, -string.len( page.extra ) - 2 ) end

    if getPageProps then
      local pageContent = mw.title.new( page.text ):getContent()
      page.args = Lazy.load( 'Module:Args' ).fromPageContent( pageContent, 'Cat%s*|%s*' .. categoryName )
    else
      page.args = {}
    end

    -- add page to group
    page.args.group = page.extra or 'default'
    page.__index = page -- allow variants to fall back to page
    page.args.__index = page.args -- allow variants' args to fall back to page's args
    local variants = page.args.variant or {{}} -- that's a table containing a single table (variant) with no properties (overrides)
    for _, variant in ipairs( variants ) do
      setmetatable( variant, page.args )
      if not variant.exclude then
        groups[variant.group] = groups[variant.group] or {}
        groups[variant.group][#groups[variant.group] + 1] = setmetatable( { args = variant }, page )
      end
    end
  end

  return groups
end

function buildGallery( pages )
  local Gallery = Lazy.load( 'Module:Gallery' ).Gallery
  local gallery = Gallery.new{
    widths = '62px',
    heights = '62px'
  }
  for _, page in ipairs( pages ) do
    gallery:addFile( page.args.image or 'No Image.png', '[[' .. page.text .. '|' .. (page.args.name or page.text) .. ']]', {
      link = page.text,
      alt = page.args.name or page.text
    } )
  end

  return gallery:render()
end


function buildGalleries( categoryProps, pageGroups )
  local Gallery = Lazy.load( 'Module:Gallery' ).Gallery

  local defaultGallery = nil
  if pageGroups.default then
    defaultGallery = buildGallery( pageGroups.default )
  end

  if categoryProps.groups then
    local Tabs = Lazy.load( 'Module:Tabs' ).Tabs
    local tabs = Tabs.new()

    if defaultGallery then

      tabs:addTabTopWithContent{
        contentId = 'General',
        content = defaultGallery
      }
    end

    -- coerce it to a table for easier processing
    local groups = type( categoryProps.groups ) == 'table' and categoryProps.groups or { categoryProps.groups }
    for index, group in ipairs( groups ) do
      if pageGroups[group] then
        tabs:addTabTopWithContent{
          contentId = group,
          content = buildGallery( pageGroups[group] )
        }
      end
    end

    return tabs:render()
  end

  return defaultGallery
end

function renderHList( parent, pages )
  local list = parent:addClass( 'hlist' )
    :tag( 'ul' )
  for _, page in ipairs( pages ) do
    list:tag( 'li' )
      :wikitext( '[[' .. page.text .. '|' .. (page.args.name or page.text) .. ']]' )
  end
end

function buildTable( categoryProps, pageGroups )
  local content = mw.html.create( 'table' )
  if #pageGroups.default then
    local defaultCell = content:tag( 'tr' )
      :tag( 'td' )
      :addClass( 'odd' )
      :attr( 'colspan', '2' )
      :css( 'text-align', 'center' )
    renderHList( defaultCell, pageGroups.default )
  end
  if categoryProps.groups then
    -- coerce it to a table for easier processing
    local groups = type( categoryProps.groups ) == 'table' and categoryProps.groups or { categoryProps.groups }
    for index, group in ipairs( groups ) do
      if pageGroups[group] then
        local row = content:tag( 'tr' )
        row:tag( 'th' )
          :addClass( 'label' )
          :wikitext( group )
        local cell = row:tag( 'td' )
          :addClass( (index + (#pageGroups.default and 1 or 0)) % 2 == 0 and 'even' or 'odd' )
        renderHList( cell, pageGroups[group] )
      end
    end
  end

  return content
end

local Navbox = Box.new()
Navbox.__index = Navbox
setmetatable( Navbox, Box )

function Navbox.new( format, args )
  local subject = args[1] .. ' ' .. args[2]
  args.class = 'navbox'
  args.title = subject
  args.edit = subject
  args.hide = 'show' -- TODO count number of navboxes, hide after the second or third (could relegate to the calling template)
  local obj = Box.new( 'light', args )
  obj.format = format
  obj.subject = subject
  obj.categories = { args[1], subject, args[2] }
  return setmetatable( obj, Navbox )
end

function Navbox:renderContent()
  local categoryProps = getCategoryProps( self.subject )
  local pageGroups = getPageGroups( self.subject, self.format == 'gallery' )
  local build = setmetatable( {
    gallery = buildGalleries
  }, {
    __index = function() return buildTable end -- default
  } )
  return build[self.format]( categoryProps, pageGroups )
end

local p, mt = {}, {}

function p._main( format, args )
  local navbox = Navbox.new( format, args )
  return navbox:render()
end

-- translates p.function( frame ) to p._main( function, args )
function mt.__index( table, key )
  return function ( frame )
    return table._main( key, frame.args )
  end
end

-- for use in the debug console:
-- =p.list(p.debugframe)
p.debugframe = {
  args = {
    [1] = "The Legend of Zelda",
    [2] = "Enemies",
  }
}

return setmetatable( p, mt )