413 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			413 lines
		
	
	
		
			12 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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 * Superclass for plugins that do "real time" updates of timelines using Ajax
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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  Plugin
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 * @package   StatusNet
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 * @author    Evan Prodromou <evan@status.net>
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 * @copyright 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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/**
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 * Superclass for plugin to do realtime updates
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 *
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 * Based on experience with the Comet and Meteor plugins,
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 * this superclass extracts out some of the common functionality
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 *
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 * @category Plugin
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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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class RealtimePlugin extends Plugin
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{
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    protected $replyurl = null;
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    protected $favorurl = null;
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    protected $deleteurl = null;
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    /**
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     * When it's time to initialize the plugin, calculate and
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     * pass the URLs we need.
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     */
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    function onInitializePlugin()
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    {
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        $this->replyurl = common_local_url('newnotice');
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        $this->favorurl = common_local_url('favor');
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        $this->repeaturl = common_local_url('repeat');
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        // FIXME: need to find a better way to pass this pattern in
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        $this->deleteurl = common_local_url('deletenotice',
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                                            array('notice' => '0000000000'));
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        return true;
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    }
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    function onEndShowScripts($action)
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    {
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        $timeline = $this->_getTimeline($action);
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        // If there's not a timeline on this page,
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        // just return true
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        if (empty($timeline)) {
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            return true;
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        }
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        $base = $action->selfUrl();
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        if (mb_strstr($base, '?')) {
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            $url = $base . '&realtime=1';
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        } else {
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            $url = $base . '?realtime=1';
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        }
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        $scripts = $this->_getScripts();
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        foreach ($scripts as $script) {
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            $action->script($script);
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        }
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        $user = common_current_user();
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        if (!empty($user->id)) {
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            $user_id = $user->id;
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        } else {
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            $user_id = 0;
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        }
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        if ($action->boolean('realtime')) {
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            $realtimeUI = ' RealtimeUpdate.initPopupWindow();';
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        }
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        else {
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            $pluginPath = common_path('plugins/Realtime/');
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            $realtimeUI = ' RealtimeUpdate.initActions("'.$url.'", "'.$timeline.'", "'. $pluginPath .'");';
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        }
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        $script = ' $(document).ready(function() { '.
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          $realtimeUI.
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          $this->_updateInitialize($timeline, $user_id).
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          '}); ';
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        $action->inlineScript($script);
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        return true;
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    }
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    function onEndShowStatusNetStyles($action)
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    {
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        $action->cssLink('plugins/Realtime/realtimeupdate.css',
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                         null, 'screen, projection, tv');
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        return true;
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    }
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    function onHandleQueuedNotice($notice)
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    {
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        $paths = array();
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        // Add to the author's timeline
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        $user = User::staticGet('id', $notice->profile_id);
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        if (!empty($user)) {
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            $paths[] = array('showstream', $user->nickname);
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        }
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        // Add to the public timeline
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        if ($notice->is_local == Notice::LOCAL_PUBLIC ||
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            ($notice->is_local == Notice::REMOTE_OMB && !common_config('public', 'localonly'))) {
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            $paths[] = array('public');
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        }
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        // Add to the tags timeline
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        $tags = $this->getNoticeTags($notice);
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        if (!empty($tags)) {
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            foreach ($tags as $tag) {
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                $paths[] = array('tag', $tag);
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            }
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        }
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        // Add to inbox timelines
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        // XXX: do a join
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        $ni = $notice->whoGets();
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        foreach (array_keys($ni) as $user_id) {
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            $user = User::staticGet('id', $user_id);
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            $paths[] = array('all', $user->nickname);
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        }
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        // Add to the replies timeline
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        $reply = new Reply();
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        $reply->notice_id = $notice->id;
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        if ($reply->find()) {
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            while ($reply->fetch()) {
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                $user = User::staticGet('id', $reply->profile_id);
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                if (!empty($user)) {
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                    $paths[] = array('replies', $user->nickname);
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                }
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            }
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        }
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        // Add to the group timeline
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        // XXX: join
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        $gi = new Group_inbox();
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        $gi->notice_id = $notice->id;
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        if ($gi->find()) {
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            while ($gi->fetch()) {
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                $ug = User_group::staticGet('id', $gi->group_id);
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                $paths[] = array('showgroup', $ug->nickname);
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            }
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        }
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        if (count($paths) > 0) {
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            $json = $this->noticeAsJson($notice);
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            $this->_connect();
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            foreach ($paths as $path) {
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                $timeline = $this->_pathToChannel($path);
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                $this->_publish($timeline, $json);
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            }
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            $this->_disconnect();
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        }
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        return true;
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    }
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    function onStartShowBody($action)
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    {
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        $realtime = $action->boolean('realtime');
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        if (!$realtime) {
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            return true;
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        }
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        $action->elementStart('body',
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                              (common_current_user()) ? array('id' => $action->trimmed('action'),
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                                                              'class' => 'user_in realtime-popup')
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                              : array('id' => $action->trimmed('action'),
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                                      'class'=> 'realtime-popup'));
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        // XXX hack to deal with JS that tries to get the
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        // root url from page output
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        $action->elementStart('address');
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        $action->element('a', array('class' => 'url',
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                                  'href' => common_local_url('public')),
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                         '');
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        $action->elementEnd('address');
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        if (common_logged_in()) {
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            $action->showNoticeForm();
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        }
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        $action->showContentBlock();
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        $action->showScripts();
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        $action->elementEnd('body');
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        return false; // No default processing
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    }
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    function noticeAsJson($notice)
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    {
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        // FIXME: this code should be abstracted to a neutral third
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        // party, like Notice::asJson(). I'm not sure of the ethics
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        // of refactoring from within a plugin, so I'm just abusing
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        // the ApiAction method. Don't do this unless you're me!
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        $act = new ApiAction('/dev/null');
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        $arr = $act->twitterStatusArray($notice, true);
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        $arr['url'] = $notice->bestUrl();
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        $arr['html'] = htmlspecialchars($notice->rendered);
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        $arr['source'] = htmlspecialchars($arr['source']);
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        $arr['conversation_url'] = $this->getConversationUrl($notice);
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        $profile = $notice->getProfile();
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        $arr['user']['profile_url'] = $profile->profileurl;
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        // Add needed repeat data
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        if (!empty($notice->repeat_of)) {
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            $original = Notice::staticGet('id', $notice->repeat_of);
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            if (!empty($original)) {
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                $arr['retweeted_status']['url'] = $original->bestUrl();
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                $arr['retweeted_status']['html'] = htmlspecialchars($original->rendered);
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                $arr['retweeted_status']['source'] = htmlspecialchars($original->source);
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                $originalProfile = $original->getProfile();
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                $arr['retweeted_status']['user']['profile_url'] = $originalProfile->profileurl;
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                $arr['retweeted_status']['conversation_url'] = $this->getConversationUrl($original);
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            }
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            $original = null;
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        }
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        return $arr;
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    }
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    function getNoticeTags($notice)
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    {
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        $tags = null;
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        $nt = new Notice_tag();
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        $nt->notice_id = $notice->id;
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        if ($nt->find()) {
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            $tags = array();
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            while ($nt->fetch()) {
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                $tags[] = $nt->tag;
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            }
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        }
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        $nt->free();
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        $nt = null;
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        return $tags;
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    }
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    function getConversationUrl($notice)
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    {
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        $convurl = null;
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        if ($notice->hasConversation()) {
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            $conv = Conversation::staticGet(
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                'id',
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                $notice->conversation
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            );
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            $convurl = $conv->uri;
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            if(empty($convurl)) {
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                $msg = sprintf(
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                    "Couldn't find Conversation ID %d to make 'in context'"
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                    . "link for Notice ID %d",
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                    $notice->conversation,
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                    $notice->id
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                );
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                common_log(LOG_WARNING, $msg);
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            } else {
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                $convurl .= '#notice-' . $notice->id;
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            }
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        }
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        return $convurl;
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    }
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    function _getScripts()
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    {
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        return array('plugins/Realtime/realtimeupdate.min.js');
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    }
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    /**
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     * Export any i18n messages that need to be loaded at runtime...
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     *
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     * @param Action $action
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     * @param array $messages
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     *
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     * @return boolean hook return value
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     */
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    function onEndScriptMessages($action, &$messages)
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    {
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        // TRANS: Text label for realtime view "play" button, usually replaced by an icon.
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        $messages['realtime_play'] = _m('BUTTON', 'Play');
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        // TRANS: Tooltip for realtime view "play" button.
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        $messages['realtime_play_tooltip'] = _m('TOOLTIP', 'Play');
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        // TRANS: Text label for realtime view "pause" button
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        $messages['realtime_pause'] = _m('BUTTON', 'Pause');
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        // TRANS: Tooltip for realtime view "pause" button
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        $messages['realtime_pause_tooltip'] = _m('TOOLTIP', 'Pause');
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        // TRANS: Text label for realtime view "popup" button, usually replaced by an icon.
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        $messages['realtime_popup'] = _m('BUTTON', 'Pop up');
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        // TRANS: Tooltip for realtime view "popup" button.
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        $messages['realtime_popup_tooltip'] = _m('TOOLTIP', 'Pop up in a window');
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        return true;
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    }
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    function _updateInitialize($timeline, $user_id)
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    {
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        return "RealtimeUpdate.init($user_id, \"$this->replyurl\", \"$this->favorurl\", \"$this->repeaturl\", \"$this->deleteurl\"); ";
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    }
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    function _connect()
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    {
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    }
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    function _publish($timeline, $json)
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    {
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    }
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    function _disconnect()
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    {
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    }
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    function _pathToChannel($path)
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    {
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        return '';
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    }
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    function _getTimeline($action)
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    {
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        $path = null;
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        $timeline = null;
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        $action_name = $action->trimmed('action');
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        switch ($action_name) {
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         case 'public':
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            $path = array('public');
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            break;
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         case 'tag':
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            $tag = $action->trimmed('tag');
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            if (!empty($tag)) {
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                $path = array('tag', $tag);
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            }
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            break;
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         case 'showstream':
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         case 'all':
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         case 'replies':
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         case 'showgroup':
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            $nickname = common_canonical_nickname($action->trimmed('nickname'));
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            if (!empty($nickname)) {
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                $path = array($action_name, $nickname);
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            }
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            break;
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         default:
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            break;
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        }
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        if (!empty($path)) {
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            $timeline = $this->_pathToChannel($path);
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        }
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        return $timeline;
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    }
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}
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