local p = {}
local grey = "#888"
-- Make a piped link to a category, if it exists
-- If it doesn't exist, just display the greyed unlinked title
function makeCatLink(catname, disp)
local displaytext = catname
if disp and disp ~= '' then
-- use 'disp' parameter, but strip any trailing disambiguator
displaytext = mw.ustring.gsub(disp, '%s+%(.+$', '');
end
local catPage = mw.title.new( catname, 'Category' )
if (catPage and catPage.exists) then
return '[[:Category:'..catname..'|'..displaytext..']]'
else
return '<span style="color:'..grey..'">'..displaytext.."</span>"
end
end
function p.navyear(frame)
--Expects a PAGENAME of the form "Some sequential 1760 example cat", where
-- {{{1}}}=Some sequential
-- {{{2}}}=1760
-- {{{3}}}=example cat
-- {{{4}}}=1758 ('min' year parameter; optional)
-- {{{5}}}=1800 ('max' year parameter; optional)
local firsthalf = frame.args[1]
local year = tonumber(frame.args[2])
local lasthalf = frame.args[3]
local minyear = tonumber(frame.args[4]) or -9999
local maxyear = tonumber(frame.args[5]) or 9999
local navyear = '{| class="toccolours hlist" style="text-align: center; margin: auto;"\n'..'|\n'
local i = -5
while i <= 5 do
local y = year + i
if i ~= 0 then
if (y >= minyear) and (y <= maxyear) then -- ex: 1758, 1759, 1761, 1762, 1763, 1764, 1765
navyear = navyear..'*'..makeCatLink( firsthalf..' '..y..' '..lasthalf, y )..'\n'
else -- ex: 1755, 1756, 1757
navyear = navyear..'*<span style="visibility:hidden">'..y..'</span>\n'
end
else -- ex: 1760
navyear = navyear..'*<b>'..year..'</b>\n'
end
i = i + 1
end
return navyear..'|}'
end
return p
