mirror of
https://github.com/EGroupware/egroupware.git
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224 lines
6.7 KiB
PHP
224 lines
6.7 KiB
PHP
<?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 backends
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* @link http://www.egroupware.org
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* @author Cornelius Weiss <nelius@cwtech.de>, Christian Binder <christian@jaytraxx.de>
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* @version $Id$
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*/
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/**
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* Instant user notification with egroupware popup.
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*
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* @abstract egwpopup is a two stage notification. In the first stage
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* notification is written into self::_notification_table.
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* 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. The second stage is done in class.notifications_ajax.inc.php
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*
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* Todo:
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* - save the messages by uid instead of sessionid into the notification table, this
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* has several advantages (users poll the messages via ajax from multiple logins, and
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* do not have to read one message twice, poll after re-login with different sessionid)
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* - delete message from the table only if the user has really seen it
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* - if the above things are done we should get rid of rendering the links here,
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* instead it should be done by the ajax class, so sessionids in links could be possible then
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*
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* (multidisplay is supported)
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*
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*/
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class notifications_popup implements notifications_iface {
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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 who sends the message
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*
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* @var object
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*/
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private $sender;
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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 $recipient;
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/**
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* holds config object (sitewide application config)
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*
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* @var object
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*/
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private $config;
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/**
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* holds preferences object of user to notify
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*
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* @var object
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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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* @var egw_db
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*/
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private $db;
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/**
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* constructor of notifications_egwpopup
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*
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* @param object $_sender
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* @param object $_recipient
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* @param object $_config
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* @param object $_preferences
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*/
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public function __construct($_sender, $_recipient, $_config = null, $_preferences = null) {
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if(!is_object($_sender)) { throw new Exception("no sender given."); }
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if(!is_object($_recipient)) { throw new Exception("no recipient given."); }
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$this->sender = $_sender;
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$this->recipient = $_recipient;
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$this->config = $_config;
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$this->preferences = $_preferences;
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$this->db = &$GLOBALS['egw']->db;
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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 array $_messages
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* @param string $_subject
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* @param array $_links
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* @param array $_attachments
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*/
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public function send(array $_messages, $_subject = false, $_links = false, $_attachments = false) {
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// Check access log to see if user is still logged in
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if ( !egw_session::notifications_active($this->recipient->account_id) )
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{
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throw new Exception("User {$this->recipient->account_lid} isn't online. Can't send notification via popup");
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}
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$message = $this->render_infos($_subject)
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.html::hr()
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.$_messages['html']
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.$this->render_links($_links);
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$this->save( $message );
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}
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/**
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* saves notification into database so that the client can fetch it from there
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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( $_message ) {
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$result = $this->db->insert( self::_notification_table, array(
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'account_id' => $this->recipient->account_id,
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'message' => $_message
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), false,__LINE__,__FILE__,self::_appname);
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if ($result === false) throw new Exception("Can't save notification into SQL table");
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}
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/**
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* renders plaintext/html links from given link array
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* should be moved to the ajax class later - like mentioned in the Todo
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*
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* @param array $_links
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* @return html rendered link(s) as complete string with jspopup or a new window
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*/
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private function render_links($_links = false) {
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if(!is_array($_links) || count($_links) == 0) { return false; }
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$newline = "<br />";
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$rendered_links = array();
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foreach($_links as $link) {
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if(!$link->popup) { $link->view['no_popup'] = 1; }
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$url = html::link('/index.php', $link->view);
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// do not expose sensitive data
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$url = preg_replace('/(sessionid|kp3|domain)=[^&]+&?/','',$url);
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// extract application-icon from menuaction
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if($link->view['menuaction']) {
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$menuaction_arr = explode('.',$link->view['menuaction']);
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$application = $menuaction_arr[0];
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$image = $application ? html::image($application,'navbar',$link->text,'align="middle" style="width: 24px; margin-right: 0.5em;"') : '';
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} else {
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$image = '';
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}
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if($link->popup) {
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$dimensions = explode('x', $link->popup);
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$rendered_links[] = html::div($image.$link->text,'onclick="'.$this->jspopup($url, '_blank', $dimensions[0], $dimensions[1]).'"','link');
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} else {
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$rendered_links[] = html::div('<a href="'.$url.'" target="_blank">'.$image.$link->text.'</a>','','link');
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}
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}
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if(count($rendered_links) > 0) {
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return html::hr().html::bold(lang('Linked entries:')).$newline.implode($newline,$rendered_links);
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}
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}
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/**
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* returns javascript to open a popup window: window.open(...)
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*
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* @param string $link link or this.href
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* @param string $target='_blank' name of target or this.target
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* @param int $width=750 width of the window
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* @param int $height=400 height of the window
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* @return string javascript (using single quotes)
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*/
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private function jspopup($link,$target='_blank',$width=750,$height=410)
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{
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return 'egw_openWindowCentered2('.($link == 'this.href' ? $link : "'".$link."'").','.
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($target == 'this.target' ? $target : "'".$target."'").",$width,$height,'yes')";
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}
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/**
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* renders additional infos from sender and subject
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*
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* @param string $_subject
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* @return html rendered info as complete string
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*/
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private function render_infos($_subject = false) {
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$infos = array();
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$newline = "<br />";
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$sender = $this->sender->account_fullname ? $this->sender->account_fullname : $this->sender_account_email;
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$infos[] = lang('Message from').': '.$sender;
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if(!empty($_subject)) { $infos[] = html::bold($_subject); }
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return implode($newline,$infos);
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}
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/**
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* Actions to take when deleting an account
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*
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* @param settings array with keys account_id and new_owner (new_owner is optional)
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*/
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public function deleteaccount($settings) {
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if($settings['new_owner']) {
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$this->db->update( self::_notification_table, array(
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'account_id' => $settings['new_owner']
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), array(
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'account_id' => $settings['account_id']
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),__LINE__,__FILE__,self::_appname);
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} else {
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$this->db->delete( self::_notification_table, array(
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'account_id' => $settings['account_id']
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),__LINE__,__FILE__,self::_appname);
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}
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}
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}
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