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λ.pagination = (->
class pgs
constructor: (@prefix, @pg, @cnt) -> @pages = []
link: (pg) -> @prefix + (if pg > 1 then '/page/' + pg else '')
dots: -> @pages.push { id: 'dots', label: '…', classes: 'disabled' }
page: (pgno) -> @pages.push {
id: pgno
link: @link pgno
label: pgno
}
first: -> @pages.push {
id: 'first'
link: @link 1
label: '|←'
classes: 'prev'
}
prev: (pg) ->
i =
id: 'prev'
link: @link pg
label: '←'
if @pg is 1
i.link = undefined
i.classes = 'disabled'
@pages.push i
next: (pg) ->
i =
id: 'next'
link: @link pg
label: '→'
if @pg is @cnt
i.link = undefined
i.classes = 'disabled'
@pages.push i
last: (pg) -> @pages.push {
id: 'last'
link: @link pg
label: '→|'
classes: 'next'
}
return (prefix, page, cnt) ->
p = new pgs prefix, page, cnt
first = page != 1 and cnt >= 10
prev = page > 2 or cnt < 10
next = page + 1 < cnt or cnt < 10
last = page < cnt and cnt >= 10
slots = 11
left = right = Math.floor(slots / 2)
left -= first + prev
right -= next + last
if page - left < 1
right += left - page + 1
left = page - 1
if page + right > cnt
oldright = right
right = cnt - page
left += oldright - right
if page - left < 1
left = page - 1
if page - left isnt 1
ldots = true
left--
if page + right isnt cnt
rdots = true
right--
p.first() if first
p.prev page-1 if prev
p.dots() if ldots
while left > 0
p.page page - left--
p.pages[(p.page page)-1].classes += ' active'
while right-- > 0
p.page page + ++left
p.dots() if rdots
p.next page+1 if next
p.last cnt if last
return p.pages
)()
###cnt = parseInt process.argv[2], 10
str_repeat = (str, fac) -> new Array(fac + 1).join(str)
for i in [1..cnt]
paging = pagination i, cnt
pgs = []
k = 0
for page, j in paging
if page.id is 'dots'
pgs.push '…'
else if typeof page.id is 'string'
pgs.push page.id[0]
else
str = page.id+''
pgs.push str[str.length-1]
if page.id is i
k = j
console.log pgs.join ' '
console.log str_repeat(' ', k)+'^'
###
|
