kallithea Changeset - e33b17db388d

Changeset - e33b17db388d

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Thomas De Schampheleire - 9 years ago 2016-10-08 22:59:50
thomas.de.schampheleire@gmail.com

helpers: move Page/RepoPage to a separate file page.py

The Page and RepoPage classes are not used from templates and thus do not
belong in helpers.
They could have been put in utils.py, but because they are completely
standalone we can easily split them to a separate file.

11 files changed with 267 insertions and 250 deletions:

kallithea/controllers/admin/admin.py

kallithea/controllers/admin/gists.py

kallithea/controllers/admin/notifications.py

kallithea/controllers/changelog.py

kallithea/controllers/followers.py

kallithea/controllers/forks.py

kallithea/controllers/journal.py

kallithea/controllers/pullrequests.py

kallithea/controllers/search.py

kallithea/lib/helpers.py

230

kallithea/lib/page.py

247

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kallithea/controllers/admin/admin.py

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@@ @@ -32,25 +32,25 @@ from pylons import request, tmpl_context @@
 from sqlalchemy.orm import joinedload
 from whoosh.qparser.default import QueryParser
 from whoosh.qparser.dateparse import DateParserPlugin
 from whoosh import query
 from sqlalchemy.sql.expression import or_, and_, func
 from kallithea.config.routing import url
 from kallithea.model.db import UserLog
 from kallithea.lib.auth import LoginRequired, HasPermissionAnyDecorator
 from kallithea.lib.base import BaseController, render
 from kallithea.lib.utils2 import safe_int, remove_prefix, remove_suffix
 from kallithea.lib.indexers import JOURNAL_SCHEMA
-from kallithea.lib.helpers import Page
+from kallithea.lib.page import Page
 log = logging.getLogger(__name__)
 def _journal_filter(user_log, search_term):
     """
     Filters sqlalchemy user_log based on search_term with whoosh Query language
     http://packages.python.org/Whoosh/querylang.html
     :param user_log:
     :param search_term:

kallithea/controllers/admin/gists.py

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@@ @@ -35,25 +35,25 @@ from pylons.i18n.translation import _ @@
 from webob.exc import HTTPFound, HTTPNotFound, HTTPForbidden
 from kallithea.config.routing import url
 from kallithea.model.forms import GistForm
 from kallithea.model.gist import GistModel
 from kallithea.model.meta import Session
 from kallithea.model.db import Gist, User
 from kallithea.lib import helpers as h
 from kallithea.lib.base import BaseController, render
 from kallithea.lib.auth import LoginRequired, NotAnonymous
 from kallithea.lib.utils import jsonify
 from kallithea.lib.utils2 import safe_int, safe_unicode, time_to_datetime
-from kallithea.lib.helpers import Page
+from kallithea.lib.page import Page
 from sqlalchemy.sql.expression import or_
 from kallithea.lib.vcs.exceptions import VCSError, NodeNotChangedError
 log = logging.getLogger(__name__)
 class GistsController(BaseController):
     """REST Controller styled on the Atom Publishing Protocol"""
     def __load_defaults(self, extra_values=None):
         c.lifetime_values = [
             (str(-1), _('Forever')),

kallithea/controllers/admin/notifications.py

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@@ @@ -29,25 +29,25 @@ import logging @@
 import traceback
 from pylons import request
 from pylons import tmpl_context as c
 from webob.exc import HTTPBadRequest, HTTPForbidden
 from kallithea.model.db import Notification
 from kallithea.model.notification import NotificationModel
 from kallithea.model.meta import Session
 from kallithea.lib.auth import LoginRequired, NotAnonymous
 from kallithea.lib.base import BaseController, render
 from kallithea.lib import helpers as h
-from kallithea.lib.helpers import Page
+from kallithea.lib.page import Page
 from kallithea.lib.utils2 import safe_int
 log = logging.getLogger(__name__)
 class NotificationsController(BaseController):
     """REST Controller styled on the Atom Publishing Protocol"""
     # To properly map this controller, ensure your config/routing.py
     # file has a resource setup:
     #     map.resource('notification', 'notifications', controller='_admin/notifications',
     #         path_prefix='/_admin', name_prefix='_admin_')

kallithea/controllers/changelog.py

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@@ @@ -27,27 +27,27 @@ Original author and date, and relevant c @@
 import logging
 import traceback
 from pylons import request, session, tmpl_context as c
 from pylons.i18n.translation import _
 from webob.exc import HTTPFound, HTTPNotFound, HTTPBadRequest
 import kallithea.lib.helpers as h
 from kallithea.config.routing import url
 from kallithea.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib.helpers import RepoPage
 from kallithea.lib.compat import json
 from kallithea.lib.graphmod import graph_data
 from kallithea.lib.page import RepoPage
 from kallithea.lib.vcs.exceptions import RepositoryError, ChangesetDoesNotExistError, \
     ChangesetError, NodeDoesNotExistError, EmptyRepositoryError
 from kallithea.lib.utils2 import safe_int, safe_str
 log = logging.getLogger(__name__)
 def _load_changelog_summary():
     p = safe_int(request.GET.get('page'), 1)
     size = safe_int(request.GET.get('size'), 10)

kallithea/controllers/followers.py

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@@ @@ -20,29 +20,29 @@ Followers controller for Kallithea @@
 This file was forked by the Kallithea project in July 2014.
 Original author and date, and relevant copyright and licensing information is below:
 :created_on: Apr 23, 2011
 :author: marcink
 :copyright: (c) 2013 RhodeCode GmbH, and others.
 :license: GPLv3, see LICENSE.md for more details.
 """
 import logging
 from pylons import tmpl_context as c, request
 from kallithea.lib.helpers import Page
 from kallithea.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib.page import Page
 from kallithea.lib.utils2 import safe_int
 from kallithea.model.db import UserFollowing
 from kallithea.lib.utils2 import safe_int
 log = logging.getLogger(__name__)
 class FollowersController(BaseRepoController):
     def __before__(self):
         super(FollowersController, self).__before__()
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')

kallithea/controllers/forks.py

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@@ @@ -28,33 +28,33 @@ Original author and date, and relevant c @@
 import logging
 import formencode
 import traceback
 from formencode import htmlfill
 from pylons import tmpl_context as c, request
 from pylons.i18n.translation import _
 from webob.exc import HTTPFound
 import kallithea.lib.helpers as h
 from kallithea.config.routing import url
 from kallithea.lib.helpers import Page
 from kallithea.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator, \
     NotAnonymous, HasRepoPermissionAny, HasPermissionAnyDecorator, HasPermissionAny
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib.page import Page
 from kallithea.lib.utils2 import safe_int
 from kallithea.model.db import Repository, UserFollowing, User, Ui
 from kallithea.model.repo import RepoModel
 from kallithea.model.forms import RepoForkForm
 from kallithea.model.scm import ScmModel, AvailableRepoGroupChoices
 from kallithea.lib.utils2 import safe_int
 log = logging.getLogger(__name__)
 class ForksController(BaseRepoController):
     def __before__(self):
         super(ForksController, self).__before__()
     def __load_defaults(self):
         repo_group_perms = ['group.admin']
         if HasPermissionAny('hg.create.write_on_repogroup.true')():

kallithea/controllers/journal.py

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@@ @@ -37,29 +37,29 @@ from sqlalchemy.sql.expression import fu @@
 from webhelpers.feedgenerator import Atom1Feed, Rss201rev2Feed
 from webob.exc import HTTPBadRequest
 from pylons import request, tmpl_context as c, response
 from pylons.i18n.translation import _
 from kallithea.config.routing import url
 from kallithea.controllers.admin.admin import _journal_filter
 from kallithea.model.db import UserLog, UserFollowing, Repository, User
 from kallithea.model.meta import Session
 from kallithea.model.repo import RepoModel
 import kallithea.lib.helpers as h
 from kallithea.lib.helpers import Page
 from kallithea.lib.auth import LoginRequired, NotAnonymous
 from kallithea.lib.base import BaseController, render
 from kallithea.lib.compat import json
 from kallithea.lib.page import Page
 from kallithea.lib.utils2 import safe_int, AttributeDict
 from kallithea.lib.compat import json
 log = logging.getLogger(__name__)
 class JournalController(BaseController):
     def __before__(self):
         super(JournalController, self).__before__()
         self.language = 'en-us'
         self.ttl = "5"
         self.feed_nr = 20
         c.search_term = request.GET.get('filter')

kallithea/controllers/pullrequests.py

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@@ @@ -26,37 +26,37 @@ Original author and date, and relevant c @@
 """
 import logging
 import traceback
 import formencode
 import re
 from pylons import request, tmpl_context as c
 from pylons.i18n.translation import _
 from webob.exc import HTTPFound, HTTPNotFound, HTTPForbidden, HTTPBadRequest
 from kallithea.config.routing import url
 from kallithea.lib.vcs.utils.hgcompat import unionrepo
 from kallithea.lib.compat import json, OrderedDict
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib import helpers as h
 from kallithea.lib import diffs
 from kallithea.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator, \
     NotAnonymous
 from kallithea.lib.helpers import Page
 from kallithea.lib import helpers as h
 from kallithea.lib import diffs
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib.compat import json, OrderedDict
 from kallithea.lib.diffs import LimitedDiffContainer
 from kallithea.lib.exceptions import UserInvalidException
 from kallithea.lib.page import Page
 from kallithea.lib.utils import action_logger, jsonify
 from kallithea.lib.vcs.exceptions import EmptyRepositoryError, ChangesetDoesNotExistError
 from kallithea.lib.vcs.utils import safe_str
 from kallithea.lib.vcs.exceptions import EmptyRepositoryError, ChangesetDoesNotExistError
 from kallithea.lib.diffs import LimitedDiffContainer
 from kallithea.lib.vcs.utils.hgcompat import unionrepo
 from kallithea.model.db import PullRequest, ChangesetStatus, ChangesetComment, \
     PullRequestReviewers, User
 from kallithea.model.pull_request import PullRequestModel
 from kallithea.model.meta import Session
 from kallithea.model.repo import RepoModel
 from kallithea.model.comment import ChangesetCommentsModel
 from kallithea.model.changeset_status import ChangesetStatusModel
 from kallithea.model.forms import PullRequestForm, PullRequestPostForm
 from kallithea.lib.utils2 import safe_int
 from kallithea.controllers.changeset import _ignorews_url, _context_url, \
     create_comment
 from kallithea.controllers.compare import CompareController

kallithea/controllers/search.py

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@@ @@ -31,27 +31,27 @@ import urllib @@
 from pylons.i18n.translation import _
 from pylons import request, config, tmpl_context as c
 from whoosh.index import open_dir, EmptyIndexError
 from whoosh.qparser import QueryParser, QueryParserError
 from whoosh.query import Phrase, Prefix
 from webhelpers.util import update_params
 from kallithea.lib.auth import LoginRequired
 from kallithea.lib.base import BaseRepoController, render
 from kallithea.lib.indexers import CHGSETS_SCHEMA, SCHEMA, CHGSET_IDX_NAME, \
     IDX_NAME, WhooshResultWrapper
-from kallithea.model.repo import RepoModel
+from kallithea.lib.page import Page
 from kallithea.lib.utils2 import safe_str, safe_int
-from kallithea.lib.helpers import Page
+from kallithea.model.repo import RepoModel
 log = logging.getLogger(__name__)
 class SearchController(BaseRepoController):
     def __before__(self):
         super(SearchController, self).__before__()
     @LoginRequired()
     def index(self, repo_name=None):
         c.repo_name = repo_name

kallithea/lib/helpers.py

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@@ @@ -10,25 +10,24 @@ @@
 # GNU General Public License for more details.
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Helper functions
 Consists of functions to typically be used within templates, but also
 available to Controllers. This module is available to both as 'h'.
 """
 import hashlib
 import StringIO
 import math
 import logging
 import re
 import urlparse
 import textwrap
 from beaker.cache import cache_region
 from pygments.formatters.html import HtmlFormatter
 from pygments import highlight as code_highlight
 from pylons.i18n.translation import _, ungettext
 from webhelpers.html import literal, HTML, escape
 from webhelpers.html.tools import *
@@ @@ -38,25 +37,24 @@ from webhelpers.html.tags import auto_di @@
     link_to_if, link_to_unless, ol, required_legend, select, stylesheet_link, \
     submit, text, password, textarea, title, ul, xml_declaration, radio, \
     form as insecure_form
 from webhelpers.html.tools import auto_link, button_to, highlight, \
     js_obfuscate, mail_to, strip_links, strip_tags, tag_re
 from webhelpers.number import format_byte_size, format_bit_size
 from webhelpers.pylonslib import Flash as _Flash
 from webhelpers.pylonslib.secure_form import secure_form, authentication_token
 from webhelpers.text import chop_at, collapse, convert_accented_entities, \
     convert_misc_entities, lchop, plural, rchop, remove_formatting, \
     replace_whitespace, urlify, truncate, wrap_paragraphs
 from webhelpers.date import time_ago_in_words
 from webhelpers.paginate import Page as _Page
 from webhelpers.html.tags import _set_input_attrs, _set_id_attr, \
     convert_boolean_attrs, NotGiven, _make_safe_id_component
 from kallithea.config.routing import url
 from kallithea.lib.annotate import annotate_highlight
 from kallithea.lib.utils import repo_name_slug, get_custom_lexer
 from kallithea.lib.utils2 import str2bool, safe_unicode, safe_str, \
     get_changeset_safe, datetime_to_time, time_to_datetime, AttributeDict, \
     safe_int, MENTIONS_REGEX
 from kallithea.lib.markup_renderer import MarkupRenderer, url_re
 from kallithea.lib.vcs.exceptions import ChangesetDoesNotExistError
 from kallithea.lib.vcs.backends.base import BaseChangeset, EmptyChangeset
@@ @@ -876,252 +874,24 @@ def gravatar_url(email_address, size=30, @@
     if email_address == _def:
         return default
     parsed_url = urlparse.urlparse(url.current(qualified=True))
     url = (c.visual.gravatar_url or User.DEFAULT_GRAVATAR_URL ) \
                .replace('{email}', email_address) \
                .replace('{md5email}', hashlib.md5(safe_str(email_address).lower()).hexdigest()) \
                .replace('{netloc}', parsed_url.netloc) \
                .replace('{scheme}', parsed_url.scheme) \
                .replace('{size}', safe_str(size))
     return url
 class Page(_Page):
     """
     Custom pager to match rendering style with YUI paginator
     """
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('url', url.current)
         _Page.__init__(self, *args, **kwargs)
     def _get_pos(self, cur_page, max_page, items):
         edge = (items / 2) + 1
         if (cur_page <= edge):
             radius = max(items / 2, items - cur_page)
         elif (max_page - cur_page) < edge:
             radius = (items - 1) - (max_page - cur_page)
         else:
             radius = items / 2
         left = max(1, (cur_page - (radius)))
         right = min(max_page, cur_page + (radius))
         return left, cur_page, right
     def _range(self, regexp_match):
         """
         Return range of linked pages (e.g. '1 2 [3] 4 5 6 7 8').
         Arguments:
         regexp_match
             A "re" (regular expressions) match object containing the
             radius of linked pages around the current page in
             regexp_match.group(1) as a string
         This function is supposed to be called as a callable in
         re.sub.
         """
         radius = int(regexp_match.group(1))
         # Compute the first and last page number within the radius
         # e.g. '1 .. 5 6 [7] 8 9 .. 12'
         # -> leftmost_page  = 5
         # -> rightmost_page = 9
         leftmost_page, _cur, rightmost_page = self._get_pos(self.page,
                                                             self.last_page,
                                                             (radius * 2) + 1)
         nav_items = []
         # Create a link to the first page (unless we are on the first page
         # or there would be no need to insert '..' spacers)
         if self.page != self.first_page and self.first_page < leftmost_page:
             nav_items.append(self._pagerlink(self.first_page, self.first_page))
         # Insert dots if there are pages between the first page
         # and the currently displayed page range
         if leftmost_page - self.first_page > 1:
             # Wrap in a SPAN tag if nolink_attr is set
             text_ = '..'
             if self.dotdot_attr:
                 text_ = HTML.span(c=text_, **self.dotdot_attr)
             nav_items.append(text_)
         for thispage in xrange(leftmost_page, rightmost_page + 1):
             # Highlight the current page number and do not use a link
             text_ = str(thispage)
             if thispage == self.page:
                 # Wrap in a SPAN tag if nolink_attr is set
                 if self.curpage_attr:
                     text_ = HTML.span(c=text_, **self.curpage_attr)
                 nav_items.append(text_)
             # Otherwise create just a link to that page
             else:
                 nav_items.append(self._pagerlink(thispage, text_))
         # Insert dots if there are pages between the displayed
         # page numbers and the end of the page range
         if self.last_page - rightmost_page > 1:
             text_ = '..'
             # Wrap in a SPAN tag if nolink_attr is set
             if self.dotdot_attr:
                 text_ = HTML.span(c=text_, **self.dotdot_attr)
             nav_items.append(text_)
         # Create a link to the very last page (unless we are on the last
         # page or there would be no need to insert '..' spacers)
         if self.page != self.last_page and rightmost_page < self.last_page:
             nav_items.append(self._pagerlink(self.last_page, self.last_page))
         #_page_link = url.current()
         #nav_items.append(literal('<link rel="prerender" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         #nav_items.append(literal('<link rel="prefetch" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         return self.separator.join(nav_items)
     def pager(self, format='~2~', page_param='page', partial_param='partial',
         show_if_single_page=False, separator=' ', onclick=None,
         symbol_first='<<', symbol_last='>>',
         symbol_previous='<', symbol_next='>',
         link_attr=None,
         curpage_attr=None,
         dotdot_attr=None, **kwargs):
         self.curpage_attr = curpage_attr or {'class': 'pager_curpage'}
         self.separator = separator
         self.pager_kwargs = kwargs
         self.page_param = page_param
         self.partial_param = partial_param
         self.onclick = onclick
         self.link_attr = link_attr or {'class': 'pager_link', 'rel': 'prerender'}
         self.dotdot_attr = dotdot_attr or {'class': 'pager_dotdot'}
         # Don't show navigator if there is no more than one page
         if self.page_count == 0 or (self.page_count == 1 and not show_if_single_page):
             return ''
         from string import Template
         # Replace ~...~ in token format by range of pages
         result = re.sub(r'~(\d+)~', self._range, format)
         # Interpolate '%' variables
         result = Template(result).safe_substitute({
             'first_page': self.first_page,
             'last_page': self.last_page,
             'page': self.page,
             'page_count': self.page_count,
             'items_per_page': self.items_per_page,
             'first_item': self.first_item,
             'last_item': self.last_item,
             'item_count': self.item_count,
             'link_first': self.page > self.first_page and \
                     self._pagerlink(self.first_page, symbol_first) or '',
             'link_last': self.page < self.last_page and \
                     self._pagerlink(self.last_page, symbol_last) or '',
             'link_previous': self.previous_page and \
                     self._pagerlink(self.previous_page, symbol_previous) \
                     or HTML.span(symbol_previous, class_="yui-pg-previous"),
             'link_next': self.next_page and \
                     self._pagerlink(self.next_page, symbol_next) \
                     or HTML.span(symbol_next, class_="yui-pg-next")
         })
         return literal(result)
 #==============================================================================
 # REPO PAGER, PAGER FOR REPOSITORY
 #==============================================================================
 class RepoPage(Page):
     def __init__(self, collection, page=1, items_per_page=20,
                  item_count=None, **kwargs):
         """Create a "RepoPage" instance. special pager for paging
         repository
         """
         # TODO: call baseclass __init__
         self._url_generator = kwargs.pop('url', url.current)
         # Safe the kwargs class-wide so they can be used in the pager() method
         self.kwargs = kwargs
         # Save a reference to the collection
         self.original_collection = collection
         self.collection = collection
         # The self.page is the number of the current page.
         # The first page has the number 1!
         try:
             self.page = int(page)  # make it int() if we get it as a string
         except (ValueError, TypeError):
             self.page = 1
         self.items_per_page = items_per_page
         # Unless the user tells us how many items the collections has
         # we calculate that ourselves.
         if item_count is not None:
             self.item_count = item_count
         else:
             self.item_count = len(self.collection)
         # Compute the number of the first and last available page
         if self.item_count > 0:
             self.first_page = 1
             self.page_count = int(math.ceil(float(self.item_count) /
                                             self.items_per_page))
             self.last_page = self.first_page + self.page_count - 1
             # Make sure that the requested page number is the range of
             # valid pages
             if self.page > self.last_page:
                 self.page = self.last_page
             elif self.page < self.first_page:
                 self.page = self.first_page
             # Note: the number of items on this page can be less than
             #       items_per_page if the last page is not full
             self.first_item = max(0, (self.item_count) - (self.page *
                                                           items_per_page))
             self.last_item = ((self.item_count - 1) - items_per_page *
                               (self.page - 1))
             self.items = list(self.collection[self.first_item:self.last_item + 1])
             # Links to previous and next page
             if self.page > self.first_page:
                 self.previous_page = self.page - 1
             else:
                 self.previous_page = None
             if self.page < self.last_page:
                 self.next_page = self.page + 1
             else:
                 self.next_page = None
         # No items available
         else:
             self.first_page = None
             self.page_count = 0
             self.last_page = None
             self.first_item = None
             self.last_item = None
             self.previous_page = None
             self.next_page = None
             self.items = []
         # This is a subclass of the 'list' type. Initialise the list now.
         list.__init__(self, reversed(self.items))
 def changed_tooltip(nodes):
     """
     Generates a html string for changed nodes in changeset page.
     It limits the output to 30 entries
     :param nodes: LazyNodesGenerator
     """
     if nodes:
         pref = ': <br/> '
         suf = ''
         if len(nodes) > 30:

kallithea/lib/page.py

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@@ new file 100644 @@
 # -*- coding: utf-8 -*-
 # This program 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 3 of the License, or
 # (at your option) any later version.
+#
 # This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Custom paging classes
 """
 import math
 import re
 from kallithea.config.routing import url
 from webhelpers.html import literal, HTML
 from webhelpers.paginate import Page as _Page
 class Page(_Page):
     """
     Custom pager to match rendering style with YUI paginator
     """
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('url', url.current)
         _Page.__init__(self, *args, **kwargs)
     def _get_pos(self, cur_page, max_page, items):
         edge = (items / 2) + 1
         if (cur_page <= edge):
             radius = max(items / 2, items - cur_page)
         elif (max_page - cur_page) < edge:
             radius = (items - 1) - (max_page - cur_page)
         else:
             radius = items / 2
         left = max(1, (cur_page - (radius)))
         right = min(max_page, cur_page + (radius))
         return left, cur_page, right
     def _range(self, regexp_match):
         """
         Return range of linked pages (e.g. '1 2 [3] 4 5 6 7 8').
         Arguments:
         regexp_match
             A "re" (regular expressions) match object containing the
             radius of linked pages around the current page in
             regexp_match.group(1) as a string
         This function is supposed to be called as a callable in
         re.sub.
         """
         radius = int(regexp_match.group(1))
         # Compute the first and last page number within the radius
         # e.g. '1 .. 5 6 [7] 8 9 .. 12'
         # -> leftmost_page  = 5
         # -> rightmost_page = 9
         leftmost_page, _cur, rightmost_page = self._get_pos(self.page,
                                                             self.last_page,
                                                             (radius * 2) + 1)
         nav_items = []
         # Create a link to the first page (unless we are on the first page
         # or there would be no need to insert '..' spacers)
         if self.page != self.first_page and self.first_page < leftmost_page:
             nav_items.append(self._pagerlink(self.first_page, self.first_page))
         # Insert dots if there are pages between the first page
         # and the currently displayed page range
         if leftmost_page - self.first_page > 1:
             # Wrap in a SPAN tag if nolink_attr is set
             text_ = '..'
             if self.dotdot_attr:
                 text_ = HTML.span(c=text_, **self.dotdot_attr)
             nav_items.append(text_)
         for thispage in xrange(leftmost_page, rightmost_page + 1):
             # Highlight the current page number and do not use a link
             text_ = str(thispage)
             if thispage == self.page:
                 # Wrap in a SPAN tag if nolink_attr is set
                 if self.curpage_attr:
                     text_ = HTML.span(c=text_, **self.curpage_attr)
                 nav_items.append(text_)
             # Otherwise create just a link to that page
             else:
                 nav_items.append(self._pagerlink(thispage, text_))
         # Insert dots if there are pages between the displayed
         # page numbers and the end of the page range
         if self.last_page - rightmost_page > 1:
             text_ = '..'
             # Wrap in a SPAN tag if nolink_attr is set
             if self.dotdot_attr:
                 text_ = HTML.span(c=text_, **self.dotdot_attr)
             nav_items.append(text_)
         # Create a link to the very last page (unless we are on the last
         # page or there would be no need to insert '..' spacers)
         if self.page != self.last_page and rightmost_page < self.last_page:
             nav_items.append(self._pagerlink(self.last_page, self.last_page))
         #_page_link = url.current()
         #nav_items.append(literal('<link rel="prerender" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         #nav_items.append(literal('<link rel="prefetch" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         return self.separator.join(nav_items)
     def pager(self, format='~2~', page_param='page', partial_param='partial',
         show_if_single_page=False, separator=' ', onclick=None,
         symbol_first='<<', symbol_last='>>',
         symbol_previous='<', symbol_next='>',
         link_attr=None,
         curpage_attr=None,
         dotdot_attr=None, **kwargs):
         self.curpage_attr = curpage_attr or {'class': 'pager_curpage'}
         self.separator = separator
         self.pager_kwargs = kwargs
         self.page_param = page_param
         self.partial_param = partial_param
         self.onclick = onclick
         self.link_attr = link_attr or {'class': 'pager_link', 'rel': 'prerender'}
         self.dotdot_attr = dotdot_attr or {'class': 'pager_dotdot'}
         # Don't show navigator if there is no more than one page
         if self.page_count == 0 or (self.page_count == 1 and not show_if_single_page):
             return ''
         from string import Template
         # Replace ~...~ in token format by range of pages
         result = re.sub(r'~(\d+)~', self._range, format)
         # Interpolate '%' variables
         result = Template(result).safe_substitute({
             'first_page': self.first_page,
             'last_page': self.last_page,
             'page': self.page,
             'page_count': self.page_count,
             'items_per_page': self.items_per_page,
             'first_item': self.first_item,
             'last_item': self.last_item,
             'item_count': self.item_count,
             'link_first': self.page > self.first_page and \
                     self._pagerlink(self.first_page, symbol_first) or '',
             'link_last': self.page < self.last_page and \
                     self._pagerlink(self.last_page, symbol_last) or '',
             'link_previous': self.previous_page and \
                     self._pagerlink(self.previous_page, symbol_previous) \
                     or HTML.span(symbol_previous, class_="yui-pg-previous"),
             'link_next': self.next_page and \
                     self._pagerlink(self.next_page, symbol_next) \
                     or HTML.span(symbol_next, class_="yui-pg-next")
         })
         return literal(result)
 class RepoPage(Page):
     def __init__(self, collection, page=1, items_per_page=20,
                  item_count=None, **kwargs):
         """Create a "RepoPage" instance. special pager for paging
         repository
         """
         # TODO: call baseclass __init__
         self._url_generator = kwargs.pop('url', url.current)
         # Safe the kwargs class-wide so they can be used in the pager() method
         self.kwargs = kwargs
         # Save a reference to the collection
         self.original_collection = collection
         self.collection = collection
         # The self.page is the number of the current page.
         # The first page has the number 1!
         try:
             self.page = int(page)  # make it int() if we get it as a string
         except (ValueError, TypeError):
             self.page = 1
         self.items_per_page = items_per_page
         # Unless the user tells us how many items the collections has
         # we calculate that ourselves.
         if item_count is not None:
             self.item_count = item_count
         else:
             self.item_count = len(self.collection)
         # Compute the number of the first and last available page
         if self.item_count > 0:
             self.first_page = 1
             self.page_count = int(math.ceil(float(self.item_count) /
                                             self.items_per_page))
             self.last_page = self.first_page + self.page_count - 1
             # Make sure that the requested page number is the range of
             # valid pages
             if self.page > self.last_page:
                 self.page = self.last_page
             elif self.page < self.first_page:
                 self.page = self.first_page
             # Note: the number of items on this page can be less than
             #       items_per_page if the last page is not full
             self.first_item = max(0, (self.item_count) - (self.page *
                                                           items_per_page))
             self.last_item = ((self.item_count - 1) - items_per_page *
                               (self.page - 1))
             self.items = list(self.collection[self.first_item:self.last_item + 1])
             # Links to previous and next page
             if self.page > self.first_page:
                 self.previous_page = self.page - 1
             else:
                 self.previous_page = None
             if self.page < self.last_page:
                 self.next_page = self.page + 1
             else:
                 self.next_page = None
         # No items available
         else:
             self.first_page = None
             self.page_count = 0
             self.last_page = None
             self.first_item = None
             self.last_item = None
             self.previous_page = None
             self.next_page = None
             self.items = []
         # This is a subclass of the 'list' type. Initialise the list now.
         list.__init__(self, reversed(self.items))

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