# Copyright (C) 2011 The CentOS Project
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# ------------------------------------------------------------------
# $Id$
# ------------------------------------------------------------------
"""This module provides support to pages construction.
To this module, a page is an XHTML document consisting of several
independent components that, when put together, provide organization
to content. Each of these components is set as a method of Layout
class that can be instantiated later from application specific modules.
When you create a new application package, you need to create a page
module for it and instantiate the Layout class provided inside it.
Later, the following functions must be created: page_content(),
page_navibar() and main(). These functions are used to define the
content of your application and its navigation, as well. Both
application content and application navigation are logically organized
using variables passed through the URL.
Application
===========
URL variable: app
This variable contains the application id. It is a unique numerical
value that starts on 0 and increments one for each new application
that might be added. The application identified by number 0 is the one
used as default when no other application is provided. The
application identified by number 0 is added to database the first time
it is created as part of the initial configuration process.
Application is the highest level of organization inside
`centos-web.cgi' script. Inside applications, it is defined pages and
contents. In other words, both pages and contents are specific to
applications.
Pages
=====
URL variable: page
This variable contains the page id. It is a unique numerical value
that starts on 0 and increments in one for each new page added to the
application. In contrast to applications, the page identified by
number 0 is not used as default page when no other page is provided.
This configuration is specific to each application and can be
customized inside each application individually. Generally, when a
page variable isn't passed through the URL, the application module
uses the `content_list()' method to display a list of all
related contents while links to pages are displayed in the related
navigation bar in order for users to access them. The unique
numerical value of pages is specific to each application, so there is
one page 0 for each application available. No page is added to
database the first time the database is created as part of the initial
configuration process.
Pages contain similar information to that described by contents with
few exceptions. Pages, in contrast to contents, can differentiate the
page title from the page name. The page title goes in the page content
itself and describes what the page is about with a phrase. On the
other hand, the page name is generaly one word describing the page
content and is used as link on the related application navigation bar.
When no page name is explicitly provided, the first word of page title
is used instead.
Pages are always accessible inside the same application while contents
aren't. Pages are permanently visible and linkend from each
application specific navigation bar. This kind of pages can be
managed by editors or administrators and can be marked as `draft' to
put it on a special state where it is possible for editors and authors
to work on it, but impossible for others to read it until the page be
marked as `published' by either the page author or any members of
editor's or administrator's groups.
Pages can be converted to contents and the oposite. When convertion
occurs, unused information looses its meaning and is kept for
informative purpose, specially in situations when it might be needed
to realize a convertion back into the former state. Notice that in
order to realize such a backward and forward convertion it is required
that both pages and entires share the same definition structure. In
fact, that be the same thing, but able to differentiate themselves
either as page or entry (e.g., through `type' field.).
Pages content is under version controlled. When a page (or entry) is
changed, a verification is performed to determine whether the
information entered in edition matches the last record in the page
history table. When both the information coming from edition and the
last record in the page history table are the same (e.g., no change
happens) the edition action is cancelled and a message is printed out
to notify the action. Otherwise, when the information entered in
edition differs from the last record in the page history table, the
information comming from edition passes to be the last record in the
page history table. In case, a page be reverted to a revision
different to that one being currently the active page, the reverted
revision becomes the active page (e.g., by changing a `status' field
from `false' to `true' in the history table).
Categories
==========
Categories exists to organize contents. When an entry is created it is
automatically linked to a category. Categories are managed by
administrators and editors only. Categories can be nested one another
and provide another way of finding information inside the web
environment. Categories are specific to each web application, just as
contents and pages are. The `Unknown' category is created when the
categories table is created for first time, as part of the initial
configuration process so if no explicit category assignation is set by
the user, a default value (the `Unknown' category in this case) is
used to satisfy the connection between contents and categories.
Referential integrity
=====================
Referential integrity is not handle in the logic layer provided by
this module, but set inside the database system used to store the
information handled by this module. The most we do about it here, is
to display a confirmation message before committing such actions, so
you can be aware of them.
"""
import cgi
import cgitb; cgitb.enable()
from Apps import xhtml
class Layout(xhtml.Strict):
"""Page modeling."""
def __init__(self):
"""Initialize page data."""
self.qs = cgi.parse()
self.name = 'Home'
self.title = 'The CentOS Project'
self.description = 'Community Enterprise Operating System'
self.keywords = 'centos, project, community, enterprise, operating system'
self.copyright = '2009-2011 The CentOS Project. All rights reserved.'
self.language = 'en'
# Define page header. This is the information displayed
# between the page top and the page content.
self.header = self.logo()
self.header += self.google()
self.header += self.navibar()
self.header += self.releases()
self.header += self.page_links()
self.header += self.page_navibar()
# Define page body. This is the information displayed between
# the page header and page footer.
self.body = 'None'
# Define page footer. This is the information displayed
# between the page bottom and the page content, the last
# information displayed in the page.
self.footer = self.credits()
def logo(self):
"""Returns The CentOS Logo.
The page logo is displayed on the top-left corner of the page.
We use this area to show The CentOS Logo, the main visual
representation of The CentOS Project. In order to print the
page logo correctly, the image related must be 78 pixels of
height.
"""
attrs = []
attrs.append({'id': 'logo'})
attrs.append({'title': 'Community Enterprise Operating System', 'href': '/centos-web/'})
attrs.append({'src': '/centos-web-pub/Images/centos-logo.png', 'alt': 'CentOS'})
return self.tag_div(attrs[0], [8,1], self.tag_a(attrs[1], [12,1], self.tag_img(attrs[2], [0,0]), 0), 1)
def google(self):
"""Returns Google advertisements (468x60 pixels)."""
output = """
<div class="ads-google">
<a title="Google Advertisement" href=""><img src="/centos-web-pub/Images/ads-sample-468x60.png" alt="Google Advertisement" /></a>
<script type="text/javascript"><!--
google_ad_client = "pub-6973128787810819";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_type = "text_image";
google_ad_channel = "";
google_color_border = "204c8d";
google_color_bg = "345c97";
google_color_link = "0000FF";
google_color_text = "FFFFFF";
google_color_url = "008000";
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</div>
<div class="page-line"><hr style="display:none;" /></div>
"""
return output
def navibar(self):
"""Returns top-level navigation bar.
The top-level navigation bar organizes links to main web
applications The CentOS Project makes use of. Links to these
web applications stay always visible, no matter what web
application you be visiting (e.g., Wiki, Lists, Forums,
Projects, Bugs, Docs, Downloads and Sponsors.).
"""
names = ['Home', 'Wiki', 'Lists', 'Forums', 'Projects', 'Bugs', 'Docs', 'Downloads', 'Sponsors']
attrs = []
focus = self.name
for i in range(len(names)):
if names[i].lower() == 'home':
attrs.append({'href': '/centos-web/'})
else:
attrs.append({'href': '/centos-web/?app=' + names[i].lower()})
tabs = self.navibar_tabs(names, attrs, focus)
tabs += self.separator()
return tabs
def navibar_tabs(self, names, attrs, focus=''):
"""Returns navigation tabs.
The navigation tabs are the smaller components a navigation
bar like "top-level navigation bar" and "application
navigation bar" are made of.
names: List containing link names of tabs.
attrs: List containing a dictionary for each tab link name
inside the `names' list. Dictionaries inside attrs
argument contain the link attributes (e.g., accesskey,
title, and href) used by link names so they can be
linkable once rendered.
focus: Name of the link marked as current.
"""
navibar_tabs = ''
for i in range(len(names)):
output = self.tag_span('', [0,0], str(names[i]))
output = self.tag_a(attrs[i], [16,1], output)
if str(names[i]).lower() == focus.lower():
output = self.tag_span({'class': 'current'}, [12,1], output, 1)
else:
output = self.tag_span('', [12,1], output, 1)
navibar_tabs += output
return self.tag_div({'class': 'tabs'}, [8,1], navibar_tabs, 1)
def releases(self, names=['6.0'], attrs=[{'href': '/centos-web/p=releases&id=6.0'}]):
"""Returns The CentOS Distribution last releases.
This method introduces the `releases' method by providing
links to it.
names: List containing release numbers in the form M.N, where M
means major release and N minor release.
attrs: List containing a dictionary for each release number
provided in `names' argument. These dictionaries provide
the link attributes required by release numbers in order
for them to be transformed into valid links once the page
be rendered.
"""
releases = ''
title = self.tag_a({'href': '/centos-web/?p=releases'}, [0,0], 'Last Releases') + ':'
title = self.tag_span({'class': 'title'}, [16,1], title)
for i in range(len(names)):
link = self.tag_a(attrs[i], [20,1], names[i])
if i == len(names) - 1:
span = self.tag_span({'class': 'last release'}, [16,1], link, 1)
else:
span = self.tag_span({'class': 'release'}, [16,1], link, 1)
releases += span
releases = self.tag_div({'class': 'left'}, [12,1], title + releases, 1)
rsslink = self.tag_span('', [0,0], 'RSS')
rsslink = self.tag_a({'href': self.qs_args({'rss':'releases'}), 'title': 'RSS'}, [20,1], rsslink)
rsslink = self.tag_span({'class': 'rss'}, [16,1], rsslink, 1)
rsslink = self.tag_div({'class': 'right'}, [12, 1], rsslink, 1)
return self.tag_div({'id': 'last-releases'}, [8,1], releases + rsslink, 1)
def user_links_logs(self):
"""Return links related to user's logs.
This function introduces the `logs' module. The `logs' module
registers all user's activity, from login to logout. This link
must be display/accessible only after a user has successfully
login.
"""
last_visit = self.tag_a({'href': self.qs_args({'app':'', 'p':'logs'})}, [0,0], 'Logs')
return self.tag_div({'class': 'logs'}, [12, 1], last_visit, 1)
def user_links_session(self):
"""Returns links related to user's session.
This function introduces the `session' module. The `session'
module provides state to user interactions so their action can
be registered individually.
"""
names = []
attrs = []
session = ''
names.append('Lost your password?')
attrs.append({'href': self.qs_args({'app':'', 'p':'lostpwd'})})
names.append('Register')
attrs.append({'href': self.qs_args({'app':'', 'p':'register'})})
names.append('Login')
attrs.append({'href': self.qs_args({'app':'', 'p':'login'})})
for i in range(len(names)):
output = self.tag_a(attrs[i], [20,1], str(names[i]), 0)
if i == len(names) - 1:
output = self.tag_span({'class': 'last'}, [16,1], output, 1)
else:
output = self.tag_span('', [16,1], output, 1)
session += output
return self.tag_div({'class': 'session'}, [12,1], session, 1)
def user_links_trails(self, names=['None'], attrs=[{'href': '/centos-web/'}]):
"""Returns page trails (a.k.a. breadcrumbs).
The page breadcrumbs record the last pages the user visited
inside the current web application. Notice that page
breadcrumbs are user-specific information, so it isn't
possible to implement them until a way to manage user sessions
be implemeneted inside `centos-web.cgi' script. Until then,
keep the tag construction commented and return an empty value.
names: List with trail link names.
attrs: Dictionary with trail link attributes.
"""
links = ''
for i in range(len(names)):
if i == len(names) - 1:
output = self.tag_span({'class':'last'}, [16,1], self.tag_a(attrs[i], [20, 1], names[i]), 1)
else:
output = self.tag_span('', [16,1], self.tag_a(attrs[i], [20, 1], names[i], 0), 1)
links += output
return self.tag_div({'class': 'trail'}, [12,1], links, 1)
def user_links(self):
"""Returns user related links.
The user links are specific to each web application. They are
shown over the application navigation bar.
"""
userlinks = self.user_links_logs()
userlinks += self.user_links_session()
userlinks += self.user_links_trails()
return self.tag_div({'class': 'userlinks'}, [8,1], userlinks, 1)
def page_navibar(self, names=['Welcome'], attrs=[{'href':'/centos-web/?p=welcome'}], focus='Welcome'):
"""Returns navigation bar for application main pages.
names: List containing link names.
attrs: List containing one dictionary for each link name in
`names' argument. Dictionaries here contain the link
attributes needed to make linkable tabs once the page is
rendered.
"""
navibar_app = self.navibar_tabs(names, attrs, focus)
navibar_app += self.separator({'class': 'page-line white'}, [8,1])
return navibar_app
def separator(self, attrs={'class': 'page-line'}, indent=[16,1]):
"""Returns separator.
The separator construction is mainly used to clear both sides
inside the page, specially when floating elements are around.
attrs: Dictionary containing hr's div attributes.
indent: List containing hr's div indentation values.
"""
line = self.tag_hr({'style': 'display:none;'}, [0,0])
line = self.tag_div(attrs, indent, line)
return line
def license(self):
"""Retruns license link."""
license = 'Creative Commons Attribution-Share Alike 3.0 Unported License'
license = self.tag_a({'href': 'http://creativecommons.org/licenses/by-sa/3.0/'}, [0,0], license) + '.'
return license
def metadata(self):
"""Returns metadata."""
metadata = self.tag_meta({'http-equiv': 'content-type', 'content': 'text/html; charset=UTF-8'}, [4,1])
metadata += self.tag_meta({'http-equiv': 'content-style-type', 'content': 'text/css'}, [4,0])
metadata += self.tag_meta({'http-equiv': 'content-language', 'content': str(self.language)}, [4,1])
metadata += self.tag_meta({'name': 'keywords', 'content': str(self.keywords)}, [4,0])
metadata += self.tag_meta({'name': 'description', 'content': str(self.description)}, [4,1])
metadata += self.tag_meta({'name': 'copyright', 'content': 'Copyright © ' + str(self.copyright)}, [4,0])
metadata += self.tag_title('', [4,1], self.title)
metadata += self.tag_link({'href': '/centos-web-pub/stylesheet.css','rel': 'stylesheet', 'type': 'text/css'}, [4,0])
metadata += self.tag_link({'href': '/centos-web-pub/Images/centos-fav.png', 'rel': 'shortcut icon', 'type': 'image/png'}, [4,1])
return self.tag_head('', [0,1], metadata)
def qs_args(self, names={}):
"""Returns query string arguments.
The query string arguments are used to build links dynamically
and, this way, to create a browsable and logically organized
web environment. Such a construction generally needs to
retrive some of the values previously passed to the query
string and add new ones to it.
names: A dictionary containing the variable name and value
pair used to build a new query string.
When a variable is provied without a value, then its value is
retrived from the current query string. If a value isn't found
there neither, then the variable is removed from the new query
string.
When a variable is provided with its value, then its value is
used to build the new query string.
"""
output = ''
names_keys = names.keys()
names_keys.sort()
for key in names_keys:
if names[key] == '':
if key in self.qs:
names[key] = self.qs[key][0]
else:
continue
if output == '':
output = '?'
else:
output += '&'
output += key + '=' + str(names[key])
return '/centos-web/' + output
def searchform(self, size=20):
"""Returns search form.
The search form redirects the search up to the search page. Is
there, in the search page, where the search occurs.
size: A number discribe how large the search text box is.
"""
input = self.tag_input({'type':'text', 'value':'', 'size':size}, [24,1])
action = self.tag_dt({}, [20,1], 'Search', 1)
action += self.tag_dd({}, [20,1], input)
action = self.tag_dl({'class':'search'}, [16,1], action, 1)
return self.tag_form({'action': self.qs_args({'app':'', 'p':'search'}),
'method':'post', 'title':'Search'},
[12,1], action, 1)
def content_resumen(self, attrs, id, title, user_id, commit_date,
update_date, category_id, comments, abstract):
"""Returns content resumen.
The content resumen is used to build the list of contents
output by `content_list()'. The content resumen pretends to be
concise and informative so the user can grab an idea what the
content is about. The content resumen is made of the following
information:
attrs: A dictionary discribing the rows style. This is
useful to alternate the row background colors.
id: A unique numerical value referring the content
identification. This is the value used on
administrative tasks like updating and deleting.
title: A few words phrase describing the content,
up to 255 characters.
author_id: A string referring the user email address, as
specified by RFC2822. The user email address is used
as id inside The CentOS User LDAP server, where user
specific information (e.g., surname, lastname, office,
phone, etc.) are stored in. This is the field that
bonds the user with the content he/she produces.
commit_date: A string referring the timestamp the content
arrived to database for time.
update_date: A string representing the timestamp the
content was updated/revised for last time.
category_id: A number refering the category id the
content is attached to.
abstract: One paragraphs describing the content. This
information is used to build the page metadata
information. When this value is not provided no
abstract information is displayed in the page, but the
<meta name="description".../> is built using article's
first 255 characters.
comments: A number representing how many comments the
content has received since it is in the database.
The content itself is not displayed in the resumen, but in
`content_detailed()'.
"""
title = self.tag_a({'href': self.qs_args({'app':'', 'p':'entry', 'id':id})}, [0,0], title)
title = self.tag_h3({'class': 'title'}, [20,1], title, 0)
info = self.content_info(id, user_id, commit_date, update_date, category_id, comments, abstract)
return self.tag_div(attrs, [16,1], title + info, 1)
def pagination(self):
"""Return content pagination."""
previous = self.tag_a({'href':''}, [12,1], 'Previous')
previous = self.tag_span({'class':'previous'}, [12,1], previous, 1)
next = self.tag_a({'href':''}, [12,1], 'Next')
next = self.tag_span({'class':'next'}, [12,1], next, 1)
return self.tag_div({'class':'pagination'}, [12,1], previous + next + self.separator(), 1)
def content_info(self, content_id, user_id, commit_date, update_date, category_id, comments, abstract):
"""Return content information.
The content information provides a reduced view of content so
people can make themselves an idea of what the content talks
about. The content information displays content's title,
author, timestamp, related category, number of comments and an
abstract of the whole content.
"""
categories = []
categories.append('Unknown')
categories.append('Erratas')
categories.append('Articles')
categories.append('Events')
if category_id <= len(categories):
category_name = categories[category_id].capitalize()
else:
category_id = 0
category_name = categories[category_id].capitalize()
category_name = self.tag_a({'href': self.qs_args({'app':'', 'p':'categories', 'id':category_id})}, [0,0], category_name)
category_name = self.tag_span({'class':'category'}, [24,1], category_name)
users = {}
users['al@centos.org'] = 'Alain Reguera Delgado'
users['ana@centos.org'] = 'Ana Tamara Reguera Gattorno'
users['alina@centos.org'] = 'Alina Reguera Gattorno'
if user_id in users.keys():
user_name = self.tag_a({'href':'mailto:' + user_id}, [0,0], users[user_id])
user_name = self.tag_span({'class':'author'}, [24,1], 'Written by ' + user_name)
if update_date != commit_date:
date = self.tag_span({'class':'date'}, [24,1], update_date)
else:
date = self.tag_span({'class':'date'}, [24,1], commit_date)
comments_attrs = {'href': self.qs_args({'app':'', 'p':'entry', 'id':content_id}) + '#comments'}
if comments == 1:
comments = self.tag_a(comments_attrs, [0,0], str(comments) + ' comment')
elif comments > 1:
comments = self.tag_a(comments_attrs, [0,0], str(comments) + ' comments')
else:
comments = 'No comments'
comments = self.tag_span({'class':'comment'}, [24,1], comments)
abstract = self.tag_p({'class':'abstract'}, [24,1], abstract)
return self.tag_div({'class': 'info'}, [20,1], user_name + date + category_name + comments + abstract, 1)
def content_list(self):
"""Return list of content.
The list of content is used to explore the content available
inside specific pages of specific web applications. The
information is displayed through paginated rows of content
that can be filtered to reduce the search results based on
patterns. By default, the list of content displays 15 rows,
but this value can be changed in user's preferences.
"""
output = ''
count = 0
rows = []
rows.append([0, 'Introduction to CentOS Web Environment',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
0,
0,
'This is the abstract paragrah of content. '*10])
rows.append([1, 'Creating New Applications',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
2,
1,
'This is the abstract paragrah of content. '*5])
rows.append([2, 'Texinfo Documentation Backend',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
1,
5,
'This is the abstract paragrah of content. '*8])
for row in rows:
if count == 0:
attrs = {'class': 'dark row'}
count += 1
else:
attrs = {'class': 'light row'}
count = 0
output += self.content_resumen(attrs, *row)
list = output + self.pagination() + self.separator()
list = self.tag_div({'id':'content-list'}, [12,1], list, 1)
actions = self.searchform(16) + self.categories() + self.archives()
actions = self.tag_div({'id':'content-actions'}, [8,1], actions, 1)
return actions + list
def content_details(self):
"""Return content details.
The content detail is shown for contents and pages.
"""
output = ''
rows = []
rows.append([0, 'Introduction to CentOS Web Environment',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
0,
0,
'This is the abstract paragrah of content. '*10,
'This is the first paragraph of content'*10 + "\n"
'This is the second paragraph of content'*20 +
"\n" + 'This is the third paragraph of content.'*10 + "\n"])
rows.append([1, 'Creating New Applications',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
2,
1,
'This is the abstract paragrah of content. '*5,
"This is the first paragraph of content\n\
This is the second paragraph of content.\n\
This is the third paragraph of content."])
rows.append([2, 'Texinfo Documentation Backend',
'al@centos.org',
'2011-8-30 12:33:11',
'2011-8-30 12:33:11',
1,
5,
'This is the abstract paragrah of content. '*8,
"This is the first paragraph of content.\n\
This is the second paragraph of content.\n\
This is the third paragraph of content."])
if 'id' in self.qs:
id = int(self.qs['id'][0])
title = rows[id][1]
email = rows[id][2]
commit_date = rows[id][3]
update_date = rows[id][4]
category = rows[id][5]
comments = rows[id][6]
abstract = self.tag_p({}, [0,0], rows[id][7])
output = self.tag_h1({'class':'title'}, [12,1], title)
output += self.content_info(id, email, commit_date, update_date, category, comments, abstract)
output += self.tag_p({}, [20,1], rows[id][8])
output += self.comments()
return self.tag_div({'id':'content-details'}, [12,1], output, 1)
def comments(self):
"""Returns content specific list of comments.
"""
output = self.tag_a({'name':'comment'}, [0,0], 'Comments')
output = self.tag_h2({'class':'title comments'}, [12,1], output, 0)
return output
def categories(self):
"""Returns list of categories.
"""
categories = ['Unknown', 'Articles', 'Erratas', 'Events']
dt = self.tag_dt({}, [12,1], 'Categories')
dd = ''
for id in range(len(categories)):
category_attrs = {'href': self.qs_args({'app':'', 'p':'categories', 'id':id})}
a = self.tag_a(category_attrs, [16,0], categories[id] + ' (0)')
dd += self.tag_dd({}, [12,1], a, 1)
return self.tag_dl({},[8,1], dt + dd, 1)
def archives(self):
"""Returns archives."""
archives = {}
archives['2011'] = ['January', 'February', 'March', 'April', 'May']
archives['2010'] = ['January', 'February']
dt = self.tag_dt({}, [12,1], 'Archives')
year_dl = ''
year_dd = ''
for key in archives.keys():
year_dt = self.tag_dt({},[12,1], key, 1)
for id in range(len(archives[key])):
a = self.tag_a({'href': self.qs_args({'app':'',
'p':'archives', 'year': key, 'month': id + 1})},
[16,1], archives[key][id] + ' (0)')
year_dd += self.tag_dd({}, [12,1], a)
year_dl += self.tag_dl({'class':'year'}, [12,1], year_dt + year_dd, 1)
year_dd = ''
return self.tag_dl({},[8,1], dt + year_dl, 1)
def page_top(self):
"""Returns page top anchor."""
return self.tag_a({'name':'top'}, [0,1])
def page_header(self):
"""Returns page header.
The page_header is common to all application modules and
"""
return self.tag_div({'id': 'page-header'}, [4,1], self.header, 1)
def page_body(self):
"""Returns page body.
The page_body is specific to each application module and is
there where it must be constructed. The construction itself
takes place through the `page_content()' function which does a
return through an instantiated `content_' prefixed method.
The `content_' prefixed method used depends on the kind of
content you want to print out (e.g., `content_list()' for a
content list, `detail()' for a detailed view of content,
etc.). Later, the `body' variable instantiated from this class
is reset in the `main()' function with the value returned from
`page_content()' so the desired content layout can be printed
out.
"""
return self.tag_div({'id':'page-body'}, [4,1], self.body, 1)
def page_links(self):
"""Returns page links."""
page_links = self.user_links()
return self.tag_div({'id': 'pagelinks'}, [8,1], page_links, 1)
def page_footer(self):
"""Retruns page footer."""
return self.tag_div({'id': 'page-footer'}, [4,1], self.credits(), 1)
def page_wrap(self):
"""Returns page wrap."""
return self.tag_div({'id': 'wrap'}, [0,1], self.page_header() + self.page_body() + self.page_footer(), 1)
def admonition(self, title='Note', subtitle="", body=""):
"""Returns page admonition.
title: Admonition's title.
subtitle: Admonition's subtitle. The value of this argument is
concatenated on the right side of title using a colon (:)
as separator. Notice that this value is expanded inside
the <h3> tag and there is no need to introduce extra tags
here.
body: Admonition's body. The values passed through this
arguments needs to be XHTML code returned from
`self.tag()'. Preferably, paragraphs (p), tables (table),
lists (ul, ol, dl) and pre-formatted texts (pre).
"""
if title == '':
return ''
else:
title = str(title.capitalize())
if subtitle != '':
subtitle = ': ' + str(subtitle.capitalize())
if body != '':
body = str(body)
admonitions = ['Note', 'Tip', 'Important', 'Caution', 'Warning', 'Redirected', 'Success', 'Error']
if title in admonitions:
attrs = {'class': 'admonition ' + title.lower()}
image = self.tag_img({'src': '/centos-web-pub/Images/' + title.lower() + '.png', 'alt': title}, [16,1])
title = self.tag_h3({'class': 'title'}, [16,1], title + subtitle, 0)
output = image + title + body + self.separator()
else:
attrs = {'class': 'admonition unknown'}
title = self.tag_h3({'class': 'title'}, [16,1], title + subtitle, 1)
output = title + body
return self.tag_div(attrs, [12,1], output, 1)
def credits(self):
"""Returns page credits."""
copyright = self.tag_p({'class': 'copyright'}, [12,1], 'Copyright © ' + str(self.copyright))
license = self.tag_p({'class': 'license'}, [12,1], 'This website is licensed under a ' + str(self.license()))
credits = self.tag_img({'src': '/centos-web-pub/Images/top.png', 'alt': 'Top'}, [0,0])
credits = self.tag_a({'title': 'Top', 'href': '#top'}, [16,1], credits)
credits = self.tag_div({'class': 'top'}, [12,1], credits, 1)
credits = str(credits) + str(copyright) + str(license)
credits = self.tag_div({'class': 'credits'}, [8,1], credits, 1)
return credits
def page(self):
"""Returns page final output."""
html = self.doctype()
html += self.tag_html({'xmlns': 'http://www.w3.org/1999/xhtml', 'dir': 'ltr',
'lang': str(self.language), 'xml:lang': str(self.language)}, [0,1],
self.metadata() + self.page_top() + self.page_wrap())
return html