gnu-social/plugins/Realtime/RealtimePlugin.php

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<?php
/**
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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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*
* 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
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* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @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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*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
}
/**
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* 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
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*
* @category Plugin
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* @package StatusNet
* @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;
protected $favorurl = null;
protected $deleteurl = null;
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/**
* When it's time to initialize the plugin, calculate and
* pass the URLs we need.
*/
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function onInitializePlugin()
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{
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$this->replyurl = common_local_url('newnotice');
$this->favorurl = common_local_url('favor');
$this->repeaturl = common_local_url('repeat');
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// FIXME: need to find a better way to pass this pattern in
$this->deleteurl = common_local_url('deletenotice',
array('notice' => '0000000000'));
return true;
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}
function onEndShowScripts($action)
{
$timeline = $this->_getTimeline($action);
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// If there's not a timeline on this page,
// just return true
if (empty($timeline)) {
return true;
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}
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$base = $action->selfUrl();
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if (mb_strstr($base, '?')) {
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$url = $base . '&realtime=1';
} else {
$url = $base . '?realtime=1';
}
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$scripts = $this->_getScripts();
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foreach ($scripts as $script) {
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$action->script($script);
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}
$user = common_current_user();
if (!empty($user->id)) {
$user_id = $user->id;
} else {
$user_id = 0;
}
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if ($action->boolean('realtime')) {
$realtimeUI = ' RealtimeUpdate.initPopupWindow();';
}
else {
$pluginPath = common_path('plugins/Realtime/');
$realtimeUI = ' RealtimeUpdate.initActions("'.$url.'", "'.$timeline.'", "'. $pluginPath .'");';
}
$script = ' $(document).ready(function() { '.
$realtimeUI.
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$this->_updateInitialize($timeline, $user_id).
'}); ';
$action->inlineScript($script);
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return true;
}
function onEndShowStatusNetStyles($action)
{
$action->cssLink('plugins/Realtime/realtimeupdate.css',
null, 'screen, projection, tv');
return true;
}
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function onHandleQueuedNotice($notice)
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{
$paths = array();
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// Add to the author's timeline
$user = User::staticGet('id', $notice->profile_id);
if (!empty($user)) {
$paths[] = array('showstream', $user->nickname);
}
// Add to the public timeline
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if ($notice->is_local == Notice::LOCAL_PUBLIC ||
($notice->is_local == Notice::REMOTE_OMB && !common_config('public', 'localonly'))) {
$paths[] = array('public');
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}
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// Add to the tags timeline
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$tags = $this->getNoticeTags($notice);
if (!empty($tags)) {
foreach ($tags as $tag) {
$paths[] = array('tag', $tag);
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}
}
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// Add to inbox timelines
// XXX: do a join
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$ni = $notice->whoGets();
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foreach (array_keys($ni) as $user_id) {
$user = User::staticGet('id', $user_id);
$paths[] = array('all', $user->nickname);
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}
// Add to the replies timeline
$reply = new Reply();
$reply->notice_id = $notice->id;
if ($reply->find()) {
while ($reply->fetch()) {
$user = User::staticGet('id', $reply->profile_id);
if (!empty($user)) {
$paths[] = array('replies', $user->nickname);
}
}
}
// Add to the group timeline
// XXX: join
$gi = new Group_inbox();
$gi->notice_id = $notice->id;
if ($gi->find()) {
while ($gi->fetch()) {
$ug = User_group::staticGet('id', $gi->group_id);
$paths[] = array('showgroup', $ug->nickname);
}
}
if (count($paths) > 0) {
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$json = $this->noticeAsJson($notice);
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$this->_connect();
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foreach ($paths as $path) {
$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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}
return true;
}
function onStartShowBody($action)
{
$realtime = $action->boolean('realtime');
if (!$realtime) {
return true;
}
$action->elementStart('body',
(common_current_user()) ? array('id' => $action->trimmed('action'),
'class' => 'user_in realtime-popup')
: array('id' => $action->trimmed('action'),
'class'=> 'realtime-popup'));
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// XXX hack to deal with JS that tries to get the
// root url from page output
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$action->elementStart('address');
$action->element('a', array('class' => 'url',
'href' => common_local_url('public')),
'');
$action->elementEnd('address');
if (common_logged_in()) {
$action->showNoticeForm();
}
$action->showContentBlock();
$action->showScripts();
$action->elementEnd('body');
return false; // No default processing
}
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function noticeAsJson($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 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();
$arr['html'] = htmlspecialchars($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'] = $profile->profileurl;
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// Add needed repeat data
if (!empty($notice->repeat_of)) {
$original = Notice::staticGet('id', $notice->repeat_of);
if (!empty($original)) {
$arr['retweeted_status']['url'] = $original->bestUrl();
$arr['retweeted_status']['html'] = htmlspecialchars($original->rendered);
$arr['retweeted_status']['source'] = htmlspecialchars($original->source);
$originalProfile = $original->getProfile();
$arr['retweeted_status']['user']['profile_url'] = $originalProfile->profileurl;
if (!empty($original->reply_to)) {
$originalReply = Notice::staticGet('id', $original->reply_to);
$arr['retweeted_status']['in_reply_to_status_url'] = $originalReply->bestUrl();
}
}
$original = null;
}
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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 $tags;
}
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function _getScripts()
{
return array('plugins/Realtime/realtimeupdate.js');
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}
function _updateInitialize($timeline, $user_id)
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{
return "RealtimeUpdate.init($user_id, \"$this->replyurl\", \"$this->favorurl\", \"$this->repeaturl\", \"$this->deleteurl\"); ";
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}
function _connect()
{
}
function _publish($timeline, $json)
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{
}
function _disconnect()
{
}
function _pathToChannel($path)
{
return '';
}
function _getTimeline($action)
{
$path = null;
$timeline = null;
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$action_name = $action->trimmed('action');
switch ($action_name) {
case 'public':
$path = array('public');
break;
case 'tag':
$tag = $action->trimmed('tag');
if (!empty($tag)) {
$path = array('tag', $tag);
}
break;
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case 'showstream':
case 'all':
case 'replies':
case 'showgroup':
$nickname = common_canonical_nickname($action->trimmed('nickname'));
if (!empty($nickname)) {
$path = array($action_name, $nickname);
}
break;
default:
break;
}
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if (!empty($path)) {
$timeline = $this->_pathToChannel($path);
}
return $timeline;
}
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}