2006-09-07 09:04:15 +02:00
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<?php
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/**
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* eGroupWare - Notifications
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package notifications
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* @subpackage ajaxpopup
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* @link http://www.egroupware.org
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* @author Cornelius Weiss <nelius@cwtech.de>
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2006-09-25 09:00:51 +02:00
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* @version $id$
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2006-09-07 09:04:15 +02:00
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*/
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require_once('class.iface_notification.inc.php');
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/**
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* Instant user notification with egroupware popup.
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* egwpopup is a two stage notification. In the first stage
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* notification is written into self::_notification_egwpopup
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* table. In the second stage a request from the client reads
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* out the table to look if there is a notificaton for this
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* client. (multidisplay is supported)
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*/
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class notification_popup implements iface_notification {
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/**
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* Notification window {div|alert}
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*/
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const _window = 'div';
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/**
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* Appname
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*/
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const _appname = 'notifications';
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/**
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* Notification table in SQL database
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*/
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const _notification_table = 'egw_notificationpopup';
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/**
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* holds account object for user to notify
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*
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* @var object
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*/
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private $account;
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/**
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* holds preferences object of user to notify
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*
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2006-09-25 09:00:51 +02:00
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* @var object
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2006-09-07 09:04:15 +02:00
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*/
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private $preferences;
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/**
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* holds db object of SQL database
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*
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2006-09-25 09:00:51 +02:00
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* @var egw_db
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2006-09-07 09:04:15 +02:00
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*/
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private $db;
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/**
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* constructor of notification_egwpopup
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*
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* @param object $_account
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* @param object $_preferences
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*/
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public function __construct( $_account=false, $_preferences=false) {
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// If we are called from class notification account and prefs are objects.
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// otherwise we have to fetch this objects for current user.
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if (!is_object($_account)) {
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$account_id = $GLOBALS['egw_info']['user']['account_id'];
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$this->account = $GLOBALS['egw']->accounts->get_account_data($account_id);
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$this->account[$account_id]['id'] = $account_id;
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$this->account = (object)$this->account[$account_id];
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}
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else {
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$this->account = $_account;
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}
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$this->preferences = is_object($_preferences) ? $_preferences : $GLOBALS['egw']->preferences;
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$this->db = &$GLOBALS['egw']->db;
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$this->db->set_app( self::_appname );
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}
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/**
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* sends notification if user is online
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*
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* @param string $_message
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*/
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public function send( $_message ) {
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$sessions = $GLOBALS['egw']->session->list_sessions(0, 'asc', 'session_dla', true);
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$user_sessions = array();
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foreach ($sessions as $session) {
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if ($session['session_lid'] == $this->account->lid. '@'. $GLOBALS['egw_info']['user']['domain']) {
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$user_sessions[] = $session['session_id'];
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}
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}
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if ( empty($user_sessions) ) throw new Exception("Notice: User isn't online. Can't send notification via popup");
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$this->save( $_message, $user_sessions );
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}
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/**
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* Gets all notification for current user.
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* Requests and response is done via xajax
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*
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* @return xajax response
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*/
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public function ajax_get_notifications() {
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$response =& new xajaxResponse();
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$session_id = $GLOBALS['egw_info']['user']['sessionid'];
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$message = '';
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$this->db->select(self::_notification_table,
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'*', array(
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'account_id' => $this->account->id,
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'session_id' => $session_id,
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),
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__LINE__,__FILE__);
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if ($this->db->num_rows() != 0) {
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while ($notification = $this->db->row(true)) {
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switch (self::_window ) {
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case 'div' :
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$message .= nl2br($notification['message']). '<br>';
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break;
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case 'alert' :
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$message .= $notification['message']. "\n";
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break;
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}
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}
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$this->db->delete(self::_notification_table,array(
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'account_id' =>$this->account->id,
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'session_id' => $session_id,
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),__LINE__,__FILE__);
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switch (self::_window) {
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case 'div' :
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$response->addAppend('notificationwindow_message','innerHTML',$message);
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$response->addScript('notificationwindow_display();');
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break;
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case 'alert' :
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$response->addAlert($message);
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break;
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}
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}
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return $response->getXML();
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}
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/**
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* saves notification into database so that the client can fetch it from
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* there via notification->get
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*
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* @param string $_message
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* @param array $_user_sessions
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*/
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private function save( $_message, array $_user_sessions ) {
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foreach ($_user_sessions as $user_session) {
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$result =& $this->db->insert( self::_notification_table, array(
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'account_id' => $this->account->id,
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'session_id' => $user_session,
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'message' => $_message
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), false,__LINE__,__FILE__);
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}
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if ($result === false) throw new Exception("Error: Can't save notification into SQL table");
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}
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}
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