Module:Navplate

-- Module:Navplate                                                           -- -- This module implements                                        -- -- Based on Module:Infobox                                                   -- -- This is a work in progress                                                --

local p = {} local args = {} local origArgs = {} local root

local function union(t1, t2) -- Returns the union of the values of two tables, as a sequence. local vals = {} for k, v in pairs(t1) do       vals[v] = true end for k, v in pairs(t2) do       vals[v] = true end local ret = {} for k, v in pairs(vals) do       table.insert(ret, k)    end return ret end

-- Returns a table containing the numbers of the arguments that exist -- for the specified prefix. For example, if the prefix was 'data', and -- 'data1', 'data2', and 'data5' exist, it would return {1, 2, 5}. local function getArgNums(prefix) local nums = {} for k, v in pairs(args) do local num = tostring(k):match('^' .. prefix .. '([1-9]%d*)$') if num then table.insert(nums, tonumber(num)) end end table.sort(nums) return nums end

local function addRow(rowArgs) -- Adds a row to the navplate, with either a header -- or a label/list combination. if rowArgs.header then root :tag('div') :addClass('template-navplate__groupheader') :wikitext(rowArgs.header) elseif rowArgs.list then local row = root:tag('div') row:addClass('template-navplate-item') row :tag('div') :addClass('template-navplate-item__label') :wikitext(rowArgs.label) :done local list = row:tag('div') list :addClass('template-navplate-item__list') :wikitext(rowArgs.list) end end

local function renderRows -- Gets the union of the header and list argument numbers, -- and renders them all in order using addRow. local rownums = union(getArgNums('header'), getArgNums('list')) table.sort(rownums) for k, num in ipairs(rownums) do       addRow({            header = args['header' .. tostring(num)],            label = args['label' .. tostring(num)],            list = args['list' .. tostring(num)]        }) end end

-- If the argument exists and isn't blank, add it to the argument table. -- Blank arguments are treated as nil to match the behaviour of ParserFunctions. local function preprocessSingleArg(argName) if origArgs[argName] and origArgs[argName] ~= '' then args[argName] = origArgs[argName] end end

-- Assign the parameters with the given prefixes to the args table, in order, in -- batches of the step size specified. This is to prevent references etc. from -- appearing in the wrong order. The prefixTable should be an array containing -- tables, each of which has two possible fields, a "prefix" string and a -- "depend" table. The function always parses parameters containing the "prefix" -- string, but only parses parameters in the "depend" table if the prefix -- parameter is present and non-blank. local function preprocessArgs(prefixTable, step) if type(prefixTable) ~= 'table' then error("Non-table value detected for the prefix table", 2) end if type(step) ~= 'number' then error("Invalid step value detected", 2) end

-- Get arguments without a number suffix, and check for bad input. for i,v in ipairs(prefixTable) do		if type(v) ~= 'table' or type(v.prefix) ~= "string" or			(v.depend and type(v.depend) ~= 'table') then error('Invalid input detected to preprocessArgs prefix table', 2) end preprocessSingleArg(v.prefix) -- Only parse the depend parameter if the prefix parameter is present -- and not blank. if args[v.prefix] and v.depend then for j, dependValue in ipairs(v.depend) do				if type(dependValue) ~= 'string' then error('Invalid "depend" parameter value detected in preprocessArgs') end preprocessSingleArg(dependValue) end end end

-- Get arguments with number suffixes. local a = 1 -- Counter variable. local moreArgumentsExist = true while moreArgumentsExist == true do		moreArgumentsExist = false for i = a, a + step - 1 do			for j,v in ipairs(prefixTable) do local prefixArgName = v.prefix .. tostring(i) if origArgs[prefixArgName] then -- Do another loop if any arguments are found, even blank ones. moreArgumentsExist = true preprocessSingleArg(prefixArgName) end -- Process the depend table if the prefix argument is present -- and not blank, or we are processing "prefix1" and "prefix" is -- present and not blank, and if the depend table is present. if v.depend and (args[prefixArgName] or (i == 1 and args[v.prefix])) then for j,dependValue in ipairs(v.depend) do local dependArgName = dependValue .. tostring(i) preprocessSingleArg(dependArgName) end end end end a = a + step end end

local function parseDataParameters preprocessArgs({		{prefix = 'header'},		{prefix = 'list', depend = {'label'}},	}, 50) end

local function _navplate root = mw.html.create('div') root :addClass('template-navplate') :tag('div') :addClass('template-navplate__content') :wikitext(renderRows) :done

return mw.getCurrentFrame:extensionTag{ name = 'templatestyles', args = { src = 'Module:Navplate/styles.css' } } .. tostring(root) end

-- If called via #invoke, use the args passed into the invoking template. -- Otherwise, for testing purposes, assume args are being passed directly in. function p.navplate(frame) if frame == mw.getCurrentFrame then origArgs = frame:getParent.args else origArgs = frame end parseDataParameters return _navplate end

-- For calling via #invoke within a template function p.navplateTemplate(frame) origArgs = {} for k,v in pairs(frame.args) do origArgs[k] = mw.text.trim(v) end parseDataParameters

return _navplate end return p