local p = {}
local contrastRatio = require('Module:Color contrast')._ratio
function __genOrderedIndex(t)
local orderedIndex = {}
for key in pairs(t) do
table.insert(orderedIndex, key)
end
table.sort(orderedIndex)
return orderedIndex
end
function orderedNext(t, state)
-- Equivalent of the next function, but returns the keys in the alphabetic
-- order. We use a temporary ordered key table that is stored in the
-- table being iterated.
local key = nil
if state == nil then
-- the first time, generate the index
t.__orderedIndex = __genOrderedIndex(t)
key = t.__orderedIndex[1]
else
-- fetch the next value
for i = 1, #(t.__orderedIndex) do
if t.__orderedIndex[i] == state then
key = t.__orderedIndex[i + 1]
end
end
end
if key then
return key, t[key]
end
-- no more value to return, cleanup
t.__orderedIndex = nil
return
end
function orderedPairs(t)
-- Equivalent of the pairs() function on tables. Allows to iterate in order.
return orderedNext, t, nil
end
local function isContrastValid(text, background)
if not background or background == "" then
return ''
end
local ratio = tonumber(contrastRatio({text, background}))
if not ratio then
return ""
end
if ratio > 4.5 and ratio < 7.0 then
return "AA"
elseif ratio > 7.0 then
return "AAA"
else
return "Failed"
end
end
local function isColorValid(color)
if not color or color == "" then
return ''
end
-- Convert to lowercase.
color = color:lower()
-- Check if color is using an HTML color name.
local HTMLcolor = mw.loadData('Module:Color contrast/colors')
if HTMLcolor[color] then
return ''
end
-- Added as a valid color in https://www.w3.org/TR/css-color-3/#transparent
if color == "transparent" then
return ""
end
-- Remove leading # if there is one.
color = string.gsub(color, "^#", "")
local cs = mw.text.split(color, '')
if #cs == 6 or #cs == 3 then
return ''
end
return false
end
-- Example of having all the data - color and names - in one table. Requires one page to be edited instead of two when adding a new party.
function p.tables(frame)
-- Initialise and populate variables
local args = frame.args
local index = args.letter
-- Load data from submodule
local data = require('Module:Political party/' .. index)
-- helper function
local function table_row(party_name, party_info)
local res = mw.html.create('')
res:tag('th')
:attr('scope', 'row')
:wikitext(party_name)
res:tag('td')
:css('background-color', party_info.color)
:wikitext(party_info.color)
res:tag('td')
:wikitext(party_info.abbrev)
res:tag('td')
:wikitext(party_info.shortname)
res:tag('td')
:wikitext(tostring(isColorValid(party_info.color)))
res:tag('td')
:wikitext(isContrastValid("black", party_info.color))
res:tag('td')
:wikitext(isContrastValid("#0645AD", party_info.color))
res:tag('td')
:wikitext(isContrastValid("#0B0080", party_info.color))
return tostring(res)
end
-- build table
local root = mw.html.create('table')
root:addClass('wikitable')
:addClass('sortable')
:addClass('plainrowheaders')
:css('background-color', 'transparent')
:css('font-size', '90%')
:css('line-height', '100%')
:cssText(style)
local row = root:tag('tr')
row:tag('th')
:attr('scope', 'col')
:wikitext('Political party name')
row:tag('th')
:attr('scope', 'col')
:addClass('unsortable')
:wikitext('color')
row:tag('th')
:attr('scope', 'col')
:wikitext('abbrev')
row:tag('th')
:attr('scope', 'col')
:wikitext('shortname')
row:tag('th')
:attr('scope', 'col')
:wikitext('Is color valid?')
row:tag('th')
:attr('scope', 'col')
:wikitext('Contrast normal text')
row:tag('th')
:attr('scope', 'col')
:wikitext('Contrast unvisited link')
row:tag('th')
:attr('scope', 'col')
:wikitext('Contrast visited link')
for party_name, party_vals in orderedPairs(data.full) do
row = root:tag('tr')
row:wikitext(table_row(party_name, party_vals))
end
return tostring(root)
end
return p
