gnu-social/actions/public.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Action for displaying the public stream
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Public
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2008-2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
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require_once INSTALLDIR.'/lib/publicgroupnav.php';
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require_once INSTALLDIR.'/lib/noticelist.php';
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require_once INSTALLDIR.'/lib/feedlist.php';
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// Farther than any human will go
define('MAX_PUBLIC_PAGE', 100);
/**
* Action for displaying the public stream
*
* @category Public
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
*
* @see PublicrssAction
* @see PublicxrdsAction
*/
class PublicAction extends Action
{
/**
* page of the stream we're on; default = 1
*/
var $page = null;
var $notice;
var $userProfile = null;
function isReadOnly($args)
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{
return true;
}
/**
* Read and validate arguments
*
* @param array $args URL parameters
*
* @return boolean success value
*/
function prepare($args)
{
parent::prepare($args);
$this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
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if ($this->page > MAX_PUBLIC_PAGE) {
// TRANS: Client error displayed when requesting a public timeline page beyond the page limit.
// TRANS: %s is the page limit.
$this->clientError(sprintf(_('Beyond the page limit (%s).'), MAX_PUBLIC_PAGE));
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}
common_set_returnto($this->selfUrl());
$this->userProfile = Profile::current();
$user = common_current_user();
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if (!empty($user) && $user->streamModeOnly()) {
$stream = new PublicNoticeStream($this->userProfile);
} else {
$stream = new ThreadingPublicNoticeStream($this->userProfile);
}
$this->notice = $stream->getNotices(($this->page-1)*NOTICES_PER_PAGE,
NOTICES_PER_PAGE + 1);
if (!$this->notice) {
// TRANS: Server error displayed when a public timeline cannot be retrieved.
$this->serverError(_('Could not retrieve public timeline.'));
return;
}
if($this->page > 1 && $this->notice->N == 0){
// TRANS: Server error when page not found (404).
$this->serverError(_('No such page.'),$code=404);
}
return true;
}
/**
* handle request
*
* Show the public stream, using recipe method showPage()
*
* @param array $args arguments, mostly unused
*
* @return void
*/
function handle($args)
{
parent::handle($args);
$this->showPage();
}
/**
* Title of the page
*
* @return page title, including page number if over 1
*/
function title()
{
if ($this->page > 1) {
// TRANS: Title for all public timeline pages but the first.
// TRANS: %d is the page number.
return sprintf(_('Public timeline, page %d'), $this->page);
} else {
// TRANS: Title for the first public timeline page.
return _('Public timeline');
}
}
function extraHead()
{
parent::extraHead();
$this->element('meta', array('http-equiv' => 'X-XRDS-Location',
'content' => common_local_url('publicxrds')));
$rsd = common_local_url('rsd');
// RSD, http://tales.phrasewise.com/rfc/rsd
$this->element('link', array('rel' => 'EditURI',
'type' => 'application/rsd+xml',
'href' => $rsd));
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if ($this->page != 1) {
$this->element('link', array('rel' => 'canonical',
'href' => common_local_url('public')));
}
}
/**
* Output <head> elements for RSS and Atom feeds
*
* @return void
*/
function getFeeds()
{
return array(new Feed(Feed::JSON,
common_local_url('ApiTimelinePublic',
array('format' => 'as')),
// TRANS: Link description for public timeline feed.
_('Public Timeline Feed (Activity Streams JSON)')),
new Feed(Feed::RSS1, common_local_url('publicrss'),
// TRANS: Link description for public timeline feed.
_('Public Timeline Feed (RSS 1.0)')),
new Feed(Feed::RSS2,
common_local_url('ApiTimelinePublic',
array('format' => 'rss')),
// TRANS: Link description for public timeline feed.
_('Public Timeline Feed (RSS 2.0)')),
new Feed(Feed::ATOM,
common_local_url('ApiTimelinePublic',
array('format' => 'atom')),
// TRANS: Link description for public timeline feed.
_('Public Timeline Feed (Atom)')));
}
function showEmptyList()
{
// TRANS: Text displayed for public feed when there are no public notices.
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$message = _('This is the public timeline for %%site.name%% but no one has posted anything yet.') . ' ';
if (common_logged_in()) {
// TRANS: Additional text displayed for public feed when there are no public notices for a logged in user.
$message .= _('Be the first to post!');
}
else {
if (! (common_config('site','closed') || common_config('site','inviteonly'))) {
// TRANS: Additional text displayed for public feed when there are no public notices for a not logged in user.
$message .= _('Why not [register an account](%%action.register%%) and be the first to post!');
}
}
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$this->elementStart('div', 'guide');
$this->raw(common_markup_to_html($message));
$this->elementEnd('div');
}
/**
* Fill the content area
*
* Shows a list of the notices in the public stream, with some pagination
* controls.
*
* @return void
*/
function showContent()
{
$user = common_current_user();
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if (!empty($user) && $user->streamModeOnly()) {
$nl = new NoticeList($this->notice, $this);
} else {
$nl = new ThreadedNoticeList($this->notice, $this, $this->userProfile);
}
$cnt = $nl->show();
if ($cnt == 0) {
$this->showEmptyList();
}
$this->pagination($this->page > 1, $cnt > NOTICES_PER_PAGE,
$this->page, 'public');
}
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function showSections()
{
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// Show invite button, as long as site isn't closed, and
// we have a logged in user.
if (common_config('invite', 'enabled') && !common_config('site', 'closed') && common_logged_in()) {
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if (!common_config('site', 'private')) {
$ibs = new InviteButtonSection(
$this,
// TRANS: Button text for inviting more users to the StatusNet instance.
// TRANS: Less business/enterprise-oriented language for public sites.
_m('BUTTON', 'Send invite')
);
} else {
$ibs = new InviteButtonSection($this);
}
$ibs->show();
}
$p = Profile::current();
$pop = new PopularNoticeSection($this, $p);
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$pop->show();
if (!common_config('performance', 'high')) {
$cloud = new PublicTagCloudSection($this);
$cloud->show();
}
$feat = new FeaturedUsersSection($this);
$feat->show();
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}
function showAnonymousMessage()
{
if (! (common_config('site','closed') || common_config('site','inviteonly'))) {
// TRANS: Message for not logged in users at an invite-only site trying to view the public feed of notices.
// TRANS: This message contains Markdown links. Please mind the formatting.
$m = _('This is %%site.name%%, a [micro-blogging](http://en.wikipedia.org/wiki/Micro-blogging) service ' .
'based on the Free Software [StatusNet](http://status.net/) tool. ' .
'[Join now](%%action.register%%) to share notices about yourself with friends, family, and colleagues! ' .
'([Read more](%%doc.help%%))');
} else {
// TRANS: Message for not logged in users at a closed site trying to view the public feed of notices.
// TRANS: This message contains Markdown links. Please mind the formatting.
$m = _('This is %%site.name%%, a [micro-blogging](http://en.wikipedia.org/wiki/Micro-blogging) service ' .
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'based on the Free Software [StatusNet](http://status.net/) tool.');
}
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$this->elementStart('div', array('id' => 'anon_notice'));
$this->raw(common_markup_to_html($m));
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$this->elementEnd('div');
}
}
class ThreadingPublicNoticeStream extends ThreadingNoticeStream
{
function __construct($profile)
{
parent::__construct(new PublicNoticeStream($profile));
}
}