Module:Image array

-- implements template:image array

local p = {}

local function isnotempty(s) return s and s:match( '^%s*(.-)%s*$' ) ~= '' end

local function renderArrayCell( img, c, a, b, l, tc, t, w, h) local alt = isnotempty(a) and ('|alt=' .. a) or '' local link = isnotempty(l) and ('|link=' .. l) or '' local text = (isnotempty(tc) and not isnotempty(t)) and mw.text.unstrip(c) or mw.text.unstrip(t or '') local border = isnotempty(b) and '|border' or '' local cell = mw.html.create('') if( img ) then cell:tag('div') :css('display', 'table-cell') :css('vertical-align', 'middle') :css('width', w .. 'px') :css('height', h .. 'px') :css('margin-left', 'auto') :css('margin-right', 'auto') :wikitext(mw.ustring.format('', img, w, h, alt .. link .. border, text)) cell:tag('div') :css('padding', '1px') :wikitext(c) end return tostring(cell) end

function p._imagearray( args ) local width = tonumber(args['width'] or '60') local height = tonumber(args['height'] or '70') local perrow = tonumber(args['perrow'] or '4') local bw = tonumber(args['border-width'] or '0') local fs = args['font-size'] or '88%' local text = args['text'] or '' local margin = args['margin'] or 'auto' local border = ( bw > 0 ) and tostring(bw) .. 'px #aaa solid' or nil

-- find all the nonempty image numbers local imagenums = {} local imagecount = 0 for k, v in pairs( args ) do		local i = tonumber(tostring(k):match( '^%s*image([%d]+)%s*$' ) or '0') if( i > 0 and isnotempty(v) ) then table.insert( imagenums, i ) imagecount = imagecount + 1 end end -- sort the image numbers table.sort(imagenums) -- compute the number of rows local rowcount = math.ceil(imagecount / perrow) if rowcount < 1 then return '' end

-- start table root = mw.html.create('table') root :addClass(args['class']) :css('border-collapse','collapse') :css('text-align','center') :css('font-size', fs) :css('line-height','1.25em') :css('margin',margin) :css('width', tostring(width*perrow) .. 'px')

-- loop over the images for j = 1, rowcount do		local row = root:tag('tr') row:css('vertical-align', 'top') for k = 1, perrow do			i = imagenums[(j-1)*perrow + k] or 0 row:tag('td') :css('width', width .. 'px') :css('text-align', 'center') :css(border and 'border' or , border or ) :wikitext(renderArrayCell( args['image' .. i], args['caption' .. i], args['alt' .. i], args['border' .. i], args['link' .. i] , args['text'], args['text' .. i], width, height)					) end end -- end table return tostring(root) end function p.array( frame ) local args = frame:getParent.args return p._imagearray( args ) end return p