JavaSkeptre: Create image array

2020-11-11T02:55:53Z

Create image array

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-- 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('[[File:%s|%dx%dpx%s|%s]]',
img, w, h, alt .. link .. border, text))
cell:tag('div')
:css('padding', '1px')
:wikitext(c)
end

return tostring(cell)
end

local function imagearray( frame )
local args = frame:getParent().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 '[[Category:Pages using image array with no images]]'
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 )
return imagearray( frame )
end

return p

Module:Image array - Revision history

JavaSkeptre: Create image array