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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Superclass for plugins that do "real time" updates of timelines using Ajax
*
* 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 Plugin
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* Superclass for plugin to do realtime updates
*
* Based on experience with the Comet and Meteor plugins,
* this superclass extracts out some of the common functionality
*
* @category Plugin
* @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
* @link http://status.net/
*/
class RealtimePlugin extends Plugin
{
protected $replyurl = null;
protected $favorurl = null;
protected $deleteurl = null;
function onInitializePlugin()
{
$this->replyurl = common_local_url('newnotice');
$this->favorurl = common_local_url('favor');
// FIXME: need to find a better way to pass this pattern in
$this->deleteurl = common_local_url('deletenotice',
array('notice' => '0000000000'));
}
function onEndShowScripts($action)
{
$path = null;
switch ($action->trimmed('action')) {
case 'public':
$path = array('public');
break;
case 'tag':
$tag = $action->trimmed('tag');
if (!empty($tag)) {
$path = array('tag', $tag);
} else {
return true;
}
break;
default:
return true;
}
$timeline = $this->_pathToChannel($path);
$scripts = $this->_getScripts();
foreach ($scripts as $script) {
$action->script($script);
}
$user = common_current_user();
if (!empty($user->id)) {
$user_id = $user->id;
} else {
$user_id = 0;
}
$action->elementStart('script', array('type' => 'text/javascript'));
$action->raw("$(document).ready(function() { ");
$action->raw($this->_updateInitialize($timeline, $user_id));
$action->raw(" });");
$action->elementEnd('script');
return true;
}
function onEndNoticeSave($notice)
{
$paths = array();
// XXX: Add other timelines; this is just for the public one
if ($notice->is_local ||
($notice->is_local == 0 && !common_config('public', 'localonly'))) {
$paths[] = array('public');
}
$tags = $this->getNoticeTags($notice);
if (!empty($tags)) {
foreach ($tags as $tag) {
$paths[] = array('tag', $tag);
}
}
if (count($paths) > 0) {
$json = $this->noticeAsJson($notice);
$this->_connect();
foreach ($paths as $path) {
$timeline = $this->_pathToChannel($path);
$this->_publish($timeline, $json);
}
$this->_disconnect();
}
return true;
}
function noticeAsJson($notice)
{
// FIXME: this code should be abstracted to a neutral third
// party, like Notice::asJson(). I'm not sure of the ethics
// of refactoring from within a plugin, so I'm just abusing
// the TwitterApiAction method. Don't do this unless you're me!
require_once(INSTALLDIR.'/lib/twitterapi.php');
$act = new TwitterApiAction('/dev/null');
$arr = $act->twitter_status_array($notice, true);
$arr['url'] = $notice->bestUrl();
$arr['html'] = htmlspecialchars($notice->rendered);
$arr['source'] = htmlspecialchars($arr['source']);
if (!empty($notice->reply_to)) {
$reply_to = Notice::staticGet('id', $notice->reply_to);
if (!empty($reply_to)) {
$arr['in_reply_to_status_url'] = $reply_to->bestUrl();
}
$reply_to = null;
}
$profile = $notice->getProfile();
$arr['user']['profile_url'] = $profile->profileurl;
return $arr;
}
function getNoticeTags($notice)
{
$tags = null;
$nt = new Notice_tag();
$nt->notice_id = $notice->id;
if ($nt->find()) {
$tags = array();
while ($nt->fetch()) {
$tags[] = $nt->tag;
}
}
$nt->free();
$nt = null;
return $tags;
}
// Push this up to Plugin
function log($level, $msg)
{
common_log($level, get_class($this) . ': '.$msg);
}
function _getScripts()
{
return array('plugins/Realtime/realtimeupdate.js',
'plugins/Realtime/json2.js');
}
function _updateInitialize($timeline, $user_id)
{
return "RealtimeUpdate.init($user_id, \"$this->replyurl\", \"$this->favorurl\", \"$this->deleteurl\"); ";
}
function _connect()
{
}
function _publish($timeline, $json)
{
}
function _disconnect()
{
}
function _pathToChannel($path)
{
return '';
}
}
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