303 lines
10 KiB
PHP
303 lines
10 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Action for displaying the public stream
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Public
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2008-2009 StatusNet, Inc.
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* @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/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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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
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define('MAX_PUBLIC_PAGE', 100);
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/**
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* Action for displaying the public stream
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*
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* @category Public
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @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/
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*
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* @see PublicrssAction
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* @see PublicxrdsAction
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*/
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class PublicAction extends Action
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{
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/**
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* page of the stream we're on; default = 1
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*/
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var $page = null;
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var $notice;
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var $userProfile = null;
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function isReadOnly($args)
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{
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return true;
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}
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/**
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* Read and validate arguments
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*
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* @param array $args URL parameters
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*
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* @return boolean success value
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*/
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function prepare($args)
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{
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parent::prepare($args);
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$this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
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if ($this->page > MAX_PUBLIC_PAGE) {
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// TRANS: Client error displayed when requesting a public timeline page beyond the page limit.
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// TRANS: %s is the page limit.
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$this->clientError(sprintf(_('Beyond the page limit (%s).'), MAX_PUBLIC_PAGE));
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}
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common_set_returnto($this->selfUrl());
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$this->userProfile = Profile::current();
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$user = common_current_user();
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if (!empty($user) && $user->streamModeOnly()) {
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$stream = new PublicNoticeStream($this->userProfile);
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} else {
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$stream = new ThreadingPublicNoticeStream($this->userProfile);
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}
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$this->notice = $stream->getNotices(($this->page-1)*NOTICES_PER_PAGE,
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NOTICES_PER_PAGE + 1);
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if (!$this->notice) {
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// TRANS: Server error displayed when a public timeline cannot be retrieved.
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$this->serverError(_('Could not retrieve public timeline.'));
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return;
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}
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if($this->page > 1 && $this->notice->N == 0){
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// TRANS: Server error when page not found (404).
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$this->serverError(_('No such page.'),$code=404);
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}
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return true;
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}
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/**
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* handle request
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*
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* Show the public stream, using recipe method showPage()
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*
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* @param array $args arguments, mostly unused
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*
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* @return void
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*/
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function handle($args)
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{
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parent::handle($args);
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$this->showPage();
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}
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/**
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* Title of the page
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*
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* @return page title, including page number if over 1
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*/
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function title()
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{
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if ($this->page > 1) {
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// TRANS: Title for all public timeline pages but the first.
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// TRANS: %d is the page number.
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return sprintf(_('Public timeline, page %d'), $this->page);
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} else {
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// TRANS: Title for the first public timeline page.
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return _('Public timeline');
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}
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}
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function extraHead()
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{
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parent::extraHead();
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$this->element('meta', array('http-equiv' => 'X-XRDS-Location',
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'content' => common_local_url('publicxrds')));
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$rsd = common_local_url('rsd');
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// RSD, http://tales.phrasewise.com/rfc/rsd
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$this->element('link', array('rel' => 'EditURI',
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'type' => 'application/rsd+xml',
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'href' => $rsd));
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if ($this->page != 1) {
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$this->element('link', array('rel' => 'canonical',
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'href' => common_local_url('public')));
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}
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}
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/**
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* Output <head> elements for RSS and Atom feeds
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*
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* @return void
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*/
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function getFeeds()
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{
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return array(new Feed(Feed::JSON,
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common_local_url('ApiTimelinePublic',
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array('format' => 'as')),
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// TRANS: Link description for public timeline feed.
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_('Public Timeline Feed (Activity Streams JSON)')),
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new Feed(Feed::RSS1, common_local_url('publicrss'),
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// TRANS: Link description for public timeline feed.
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_('Public Timeline Feed (RSS 1.0)')),
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new Feed(Feed::RSS2,
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common_local_url('ApiTimelinePublic',
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array('format' => 'rss')),
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// TRANS: Link description for public timeline feed.
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_('Public Timeline Feed (RSS 2.0)')),
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new Feed(Feed::ATOM,
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common_local_url('ApiTimelinePublic',
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array('format' => 'atom')),
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// TRANS: Link description for public timeline feed.
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_('Public Timeline Feed (Atom)')));
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}
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function showEmptyList()
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{
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// 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.') . ' ';
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if (common_logged_in()) {
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// TRANS: Additional text displayed for public feed when there are no public notices for a logged in user.
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$message .= _('Be the first to post!');
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}
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else {
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if (! (common_config('site','closed') || common_config('site','inviteonly'))) {
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// TRANS: Additional text displayed for public feed when there are no public notices for a not logged in user.
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$message .= _('Why not [register an account](%%action.register%%) and be the first to post!');
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}
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}
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$this->elementStart('div', 'guide');
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$this->raw(common_markup_to_html($message));
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$this->elementEnd('div');
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}
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/**
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* Fill the content area
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*
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* Shows a list of the notices in the public stream, with some pagination
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* controls.
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*
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* @return void
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*/
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function showContent()
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{
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$user = common_current_user();
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if (!empty($user) && $user->streamModeOnly()) {
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$nl = new NoticeList($this->notice, $this);
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} else {
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$nl = new ThreadedNoticeList($this->notice, $this, $this->userProfile);
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}
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$cnt = $nl->show();
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if ($cnt == 0) {
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$this->showEmptyList();
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}
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$this->pagination($this->page > 1, $cnt > NOTICES_PER_PAGE,
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$this->page, 'public');
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}
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function showSections()
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{
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// Show invite button, as long as site isn't closed, and
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// we have a logged in user.
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if (common_config('invite', 'enabled') && !common_config('site', 'closed') && common_logged_in()) {
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if (!common_config('site', 'private')) {
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$ibs = new InviteButtonSection(
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$this,
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// TRANS: Button text for inviting more users to the StatusNet instance.
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// TRANS: Less business/enterprise-oriented language for public sites.
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_m('BUTTON', 'Send invite')
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);
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} else {
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$ibs = new InviteButtonSection($this);
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}
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$ibs->show();
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}
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$p = Profile::current();
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$pop = new PopularNoticeSection($this, $p);
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$pop->show();
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if (!common_config('performance', 'high')) {
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$cloud = new PublicTagCloudSection($this);
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$cloud->show();
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}
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$feat = new FeaturedUsersSection($this);
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$feat->show();
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}
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function showAnonymousMessage()
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{
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if (! (common_config('site','closed') || common_config('site','inviteonly'))) {
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// TRANS: Message for not logged in users at an invite-only site trying to view the public feed of notices.
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// TRANS: This message contains Markdown links. Please mind the formatting.
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$m = _('This is %%site.name%%, a [micro-blogging](http://en.wikipedia.org/wiki/Micro-blogging) service ' .
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'based on the Free Software [StatusNet](http://status.net/) tool. ' .
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'[Join now](%%action.register%%) to share notices about yourself with friends, family, and colleagues! ' .
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'([Read more](%%doc.help%%))');
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} else {
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// TRANS: Message for not logged in users at a closed site trying to view the public feed of notices.
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// TRANS: This message contains Markdown links. Please mind the formatting.
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$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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}
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$this->elementStart('div', array('id' => 'anon_notice'));
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$this->raw(common_markup_to_html($m));
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$this->elementEnd('div');
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}
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}
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class ThreadingPublicNoticeStream extends ThreadingNoticeStream
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{
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function __construct($profile)
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{
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parent::__construct(new PublicNoticeStream($profile));
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}
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}
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