Wikipedia>Ahecht: Support a flexible number of columns

2021-11-29T21:07:41Z

Support a flexible number of columns

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-- This submodule is used to generate the complete color contrast table in
-- the documentation for [[Module:Gridiron color]]
local contrast = {}
local all_colors = {}

local contrast_mod = require("Module:Color contrast")

local function stripwhitespace(text)
return text:match("^%s*(.-)%s*$")
end

local function get_colors(team, unknown)
team = stripwhitespace(team or '')
unknown = unknown or {"DCDCDC", "000000"}

local use_default = {
[""] = 1,
["retired"] = 1,
["free agent"] = 1,
}

local colors = nil

if ( team and use_default[team:lower()] ) then
colors = {"DCDCDC", "000000"}
else
colors = all_colors[team]
if ( colors and type(colors) == 'string' ) then
colors = all_colors[colors]
end
end

return colors or unknown
end

local function color_contrast_ratio(hex1, hex2)
if( hex1 and hex2) then
local r = contrast_mod._ratio({'' .. hex1, '' .. hex2, error = 0})
if( r > 0 ) then
r = (r > 1) and r or (1/r)
r = math.floor(r * 100 + 0.5) / 100
return (r > 1) and r or (1/r)
end
end
return ''
end

function contrast._testtable(args)
local teamlist = {}
local aliaslist = {}
local style = args['style']
local data_module = args['data'] or ('Module:Gridiron color/' .. (args['sport'] or 'football'))
local columns = tonumber(args['columns']) or 4
all_colors = mw.loadData(data_module)

-- helper function
local function table_row(t, c)
local res = mw.html.create('')
if( c[1] ) then
res:tag('td'):wikitext(t)
else
res:tag('td'):wikitext(t .. ' <span class=error>ERROR</span>')
end
for i=1,columns do
res:tag('td')
:css('background', c[i] or 'transparent')
:wikitext(c[i] and '' or 'X')
end
res:tag('td'):wikitext(color_contrast_ratio(c[1],c[2]))
res:tag('td'):wikitext(color_contrast_ratio(c[columns],c[columns-1]))
return tostring(res)
end

-- list of teams
if( args and args[1] ) then
for k, team in pairs(args) do
if type(k) == 'number' then
table.insert(teamlist, team)
end
end
else
for team, colors in pairs( all_colors ) do
if type(colors) == 'string' then
aliaslist[colors] = (aliaslist[colors] or '') .. '<br />Also known as ' .. team
else
table.insert(teamlist, team)
end
end
table.sort(teamlist)
table.insert(teamlist, 'Free agent')
table.insert(teamlist, 'Retired')
end

-- build table
local root = mw.html.create('table')
root:addClass('wikitable sortable')
:css('background', 'transparent')
:css('font-size', '90%')
:css('line-height', '100%')
:cssText(style)
if args['caption'] then
root:tag('caption'):wikitext(args['caption'])
end
local row = root:tag('tr')
row:tag('th')
:attr('rowspan',2)
:wikitext('Team')
for i=1,columns do
row:tag('th')
:addClass('unsortable')
:attr('rowspan',2)
:wikitext(i)
end
row:tag('th')
:attr('colspan', 2)
:wikitext('Contrast')
row = root:tag('tr')
row:tag('th'):wikitext('1/2')
row:tag('th'):wikitext( tostring(columns) .. '/' .. tostring(columns - 1) )
for k, team in pairs( teamlist ) do
row = root:tag('tr')
row:wikitext(table_row(team .. (aliaslist[team] or ''), get_colors(team)))
end
if style and style ~= '' then
style = 'font-size:90%; padding:0.4em; width:32em; border:1px #aaa solid;' .. style
end
local note = nil
if args['note'] then
note = args['note']
else
note = 'The numeric columns are the calculated contrast ratio for colors'
.. ' 1:2 and colors ' .. tostring(columns) .. ':' .. tostring(columns-1)
.. '. Anything lower than 3 is'
.. ' very poor contrast and should be changed in'
.. ' [[' .. data_module .. '|the data module]]. For more'
.. ' information, see [[Template:Color contrast ratio]].'
end
if note ~= '' then
note = mw.html.create('div'):cssText(style):wikitext(note)
end
return tostring(root) .. tostring(note)
end

function contrast.testtable(frame)
return frame:preprocess(contrast._testtable(frame.args))
end

return contrast

Module:Gridiron color/contrast - Revision history

Wikipedia>Ahecht: Support a flexible number of columns