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# Patchwork - automated patch tracking system
# Copyright (C) 2008 Jeremy Kerr <jk@ozlabs.org>
#
# This file is part of the Patchwork package.
#
# Patchwork is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Patchwork is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Patchwork; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from django.core import paginator
from django.conf import settings
DEFAULT_PATCHES_PER_PAGE = 100
LONG_PAGE_THRESHOLD = 30
LEADING_PAGE_RANGE_DISPLAYED = TRAILING_PAGE_RANGE_DISPLAYED = 10
LEADING_PAGE_RANGE = TRAILING_PAGE_RANGE = 8
NUM_PAGES_OUTSIDE_RANGE = 2
ADJACENT_PAGES = 4
# parts from:
# http://blog.localkinegrinds.com/2007/09/06/digg-style-pagination-in-django/
class Paginator(paginator.Paginator):
def __init__(self, request, objects):
patches_per_page = settings.DEFAULT_PATCHES_PER_PAGE
if request.user.is_authenticated():
patches_per_page = request.user.profile.patches_per_page
n = request.META.get('ppp')
if n:
try:
patches_per_page = int(n)
except ValueError:
pass
super(Paginator, self).__init__(objects, patches_per_page)
try:
page_no = int(request.GET.get('page'))
self.current_page = self.page(int(page_no))
except Exception:
page_no = 1
self.current_page = self.page(page_no)
self.leading_set = self.trailing_set = []
pages = self.num_pages
if pages <= LEADING_PAGE_RANGE_DISPLAYED:
self.adjacent_set = [n for n in range(1, pages + 1) \
if n > 0 and n <= pages]
elif page_no <= LEADING_PAGE_RANGE:
self.adjacent_set = [n for n in \
range(1, LEADING_PAGE_RANGE_DISPLAYED + 1) \
if n > 0 and n <= pages]
self.leading_set = [n + pages for n in \
range(0, -NUM_PAGES_OUTSIDE_RANGE, -1)]
elif page_no > pages - TRAILING_PAGE_RANGE:
self.adjacent_set = [n for n in \
range(pages - TRAILING_PAGE_RANGE_DISPLAYED + 1, \
pages + 1) if n > 0 and n <= pages]
self.trailing_set = [n + 1 for n in range(0, \
NUM_PAGES_OUTSIDE_RANGE)]
else:
self.adjacent_set = [n for n in range(page_no - ADJACENT_PAGES, \
page_no + ADJACENT_PAGES + 1) if n > 0 and n <= pages]
self.leading_set = [n + pages for n in \
range(0, -NUM_PAGES_OUTSIDE_RANGE, -1)]
self.trailing_set = [n + 1 for n in \
range(0, NUM_PAGES_OUTSIDE_RANGE)]
self.leading_set.reverse()
self.long_page = \
len(self.current_page.object_list) >= LONG_PAGE_THRESHOLD
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