Ask about notifying attendess when moving event; finish import from ical mail attachments

plugins/calendar/calendar.php

@@ -120,6 +120,7 @@ class calendar extends rcube_plugin
       $this->register_action('freebusy-times', array($this, 'freebusy_times'));
       $this->register_action('randomdata', array($this, 'generate_randomdata'));
       $this->register_action('print', array($this,'print_view'));
+      $this->register_action('mailimportevent', array($this, 'mail_import_event'));
 
       // remove undo information...
       if ($undo = $_SESSION['calendar_event_undo']) {
@@ -137,10 +138,13 @@ class calendar extends rcube_plugin
       $this->add_hook('preferences_list', array($this, 'preferences_list'));
       $this->add_hook('preferences_save', array($this, 'preferences_save')); 
     }
-    else if ($this->rc->task == 'mail' && ($this->rc->action == 'show' || $this->rc->action == 'preview')) {
+    else if ($this->rc->task == 'mail') {
+      // hooks to catch event invitations on incoming mails
+      if ($this->rc->action == 'show' || $this->rc->action == 'preview') {
         $this->add_hook('message_load', array($this, 'mail_message_load'));
         $this->add_hook('template_object_messagebody', array($this, 'mail_messagebody_html'));
       }
+    }
     
     // add hook to display alarms
     $this->add_hook('keep_alive', array($this, 'keep_alive'));
@@ -583,7 +587,7 @@ class calendar extends rcube_plugin
     }
     
     // send out notifications
-    if ($success && $event['_notify'] && $event['attendees']) {
+    if ($success && $event['_notify'] && ($event['attendees'] || $old['attendees'])) {
       // make sure we have the complete record
       $event = $this->driver->get_event($event);
       
@@ -657,10 +661,10 @@ class calendar extends rcube_plugin
     $events = $this->driver->load_events($start, $end, null, $calendar_name, 0);
    
     header("Content-Type: text/calendar");
-    header("Content-Disposition: inline; filename=".$calendar_name);
+    header("Content-Disposition: inline; filename=".$calendar_name.'.ics');
     
     $this->load_ical();
-    echo $this->ical->export($events);
+    $this->ical->export($events, '', true);
     exit;
   }
 
@@ -841,7 +845,7 @@ class calendar extends rcube_plugin
         break;
     }
     
-    if ($rrule['INTERVAL'] == 1)
+    if ($rrule['INTERVAL'] <= 1)
       $freq = $this->gettext(strtolower($rrule['FREQ']));
       
     if ($rrule['COUNT'])
@@ -1526,7 +1530,7 @@ class calendar extends rcube_plugin
   }
 
   /**
-   * Add UI elements to copy event invitations or updates to the calendar
+   * Add UI element to copy event invitations or updates to the calendar
    */
   public function mail_messagebody_html($p)
   {
@@ -1545,6 +1549,7 @@ class calendar extends rcube_plugin
       if (empty($events))
           continue;
 
+      // TODO: show more iTip options like (accept, deny, etc.)
       foreach ($events as $idx => $event) {
         // add box below messsage body
         $html .= html::p('calendar-invitebox',
@@ -1553,7 +1558,7 @@ class calendar extends rcube_plugin
           html::tag('input', array(
             'type' => 'button',
             'class' => 'button',
-          #  'onclick' => "rcube_calendar.add_event_from_mail('" . JQ($part.':'.$idx) . "', '" . JQ($event['title']) . "')",
+            'onclick' => "rcube_calendar.add_event_from_mail('" . JQ($part.':'.$idx) . "', '" . JQ($event['title']) . "')",
             'value' => $this->gettext('importtocalendar'),
           ))
         );
@@ -1569,6 +1574,75 @@ class calendar extends rcube_plugin
     return $p;
   }
   
+  /**
+   * Handler for POST request to import an event attached to a mail message
+   */
+  public function mail_import_event()
+  {
+    $uid = get_input_value('_uid', RCUBE_INPUT_POST);
+    $mbox = get_input_value('_mbox', RCUBE_INPUT_POST);
+    $mime_id = get_input_value('_part', RCUBE_INPUT_POST);
+    
+    // establish imap connection
+    $this->rc->imap_connect();
+    $this->rc->imap->set_mailbox($mbox);
+
+    if ($uid && $mime_id) {
+      list($mime_id, $index) = explode(':', $mime_id);
+      $part = $this->rc->imap->get_message_part($uid, $mime_id);
+    }
+
+    $this->load_ical();
+    $events = $this->ical->import($part);
+    
+    $error_msg = $this->gettext('errorimportingevent');
+    $success = false;
+
+    // successfully parsed events?
+    if (!empty($events) && ($event = $events[$index])) {
+      // find writeable calendar to store event
+      $cal_id = $this->rc->config->get('calendar_default_calendar');
+      $calendars = $this->driver->list_calendars();
+      $calendar = $calendars[$cal_id] ? $calendars[$calname] : null;
+      if (!$calendar || $calendar['readonly']) {
+        foreach ($calendars as $cal) {
+          if (!$cal['readonly']) {
+            $calendar = $cal;
+            break;
+          }
+        }
+      }
+      
+      if ($calendar && !$calendar['readonly']) {
+        $event['id'] = $event['uid'];
+        $event['calendar'] = $calendar['id'];
+        
+        // check for existing event with the same UID
+        $existing = $this->driver->get_event($event);
+        
+        if ($existing) {
+          if ($event['changed'] >= $existing['changed'])
+            $success = $this->driver->edit_event($event);
+          else
+            $error_msg = $this->gettext('newerversionexists');
+        }
+        else if (!$existing) {
+          $success = $this->driver->new_event($event);
+        }
+      }
+      else
+        $error_msg = $this->gettext('nowritecalendarfound');
+    }
+
+    if ($success)
+      $this->rc->output->command('display_message', $this->gettext(array('name' => 'importedsuccessfully', 'vars' => array('calendar' => $calendar['name']))), 'confirmation');
+    else
+      $this->rc->output->command('display_message', $error_msg, 'error');
+
+    $this->rc->output->send();
+  }
+
+
   /**
    * Checks if specified message part is a vcalendar data
    *

plugins/calendar/calendar_base.js

@@ -166,6 +166,15 @@ function rcube_calendar(settings)
 
 }
 
+// static methods
+rcube_calendar.add_event_from_mail = function(mime_id, title)
+{
+  var lock = rcmail.set_busy(true, 'loading');
+  rcmail.http_post('calendar/mailimportevent', '_uid='+rcmail.env.uid+'&_mbox='+urlencode(rcmail.env.mailbox)+'&_part='+urlencode(mime_id), lock);
+  return false;
+};
+
+
 // extend jQuery
 (function($){
   $.fn.serializeJSON = function(){
@@ -183,5 +192,10 @@ window.rcmail && rcmail.addEventListener('init', function(evt) {
     var cal = new rcube_calendar(rcmail.env.calendar_settings);
     rcmail.addEventListener('plugin.display_alarms', function(alarms){ cal.display_alarms(alarms); });
   }
+  rcmail.addEventListener('plugin.ping_url', function(p){
+    var action = p.action;
+    p.action = p.event = null;
+    new Image().src = rcmail.url(action, p);
+  });
 });
 

plugins/calendar/calendar_ui.js

@@ -140,6 +140,12 @@ function rcube_calendar_ui(settings)
         return date.getHours() >= settings['work_start'] && date.getHours() < settings['work_end'];
     };
     
+    // check if the event has 'real' attendees, excluding the current user
+    var has_attendees = function(event)
+    {
+      return (event.attendees && (event.attendees.length > 1 || event.attendees[0].email != settings.event_owner.email));
+    };
+
     // create a nice human-readable string for the date/time range
     var event_date_text = function(event)
     {
@@ -465,7 +471,7 @@ function rcube_calendar_ui(settings)
         for (var j=0; j < event.attendees.length; j++)
           add_attendee(event.attendees[j], true);
         
-        if (event.attendees.length > 1 || event.attendees[0].email != settings.event_owner.email) {
+        if (has_attendees(event)) {
           notify.checked = invite.checked = true;  // enable notification by default
         }
       }
@@ -1292,43 +1298,86 @@ function rcube_calendar_ui(settings)
       return true;
     };
 
-    // display confirm dialog when modifying/deleting a recurring event where the user needs to select the savemode
+    // display confirm dialog when modifying/deleting an event
-    var recurring_edit_confirm = function(event, action) {
+    var update_event_confirm = function(action, event, data)
-      var $dialog = $('<div>').addClass('edit-recurring-warning');
+    {
-      $dialog.html('<div class="message"><span class="ui-icon ui-icon-alert"></span>' +
+      if (!data) data = event;
+      var html = '';
+      
+      // event has attendees, ask whether to notify them
+      if (has_attendees(event)) {
+        html += '<div class="message">' +
+          '<label><input class="confirm-attendees-donotify" type="checkbox" checked="checked" value="1" name="notify" />&nbsp;' +
+          rcmail.gettext('sendnotifications', 'calendar') + 
+          '</label></div>';
+      }
+      
+      // recurring event: user needs to select the savemode
+      if (event.recurrence) {
+        html += '<div class="message"><span class="ui-icon ui-icon-alert"></span>' +
           rcmail.gettext((action == 'remove' ? 'removerecurringeventwarning' : 'changerecurringeventwarning'), 'calendar') + '</div>' +
           '<div class="savemode">' +
             '<a href="#current" class="button">' + rcmail.gettext('currentevent', 'calendar') + '</a>' +
             '<a href="#future" class="button">' + rcmail.gettext('futurevents', 'calendar') + '</a>' +
             '<a href="#all" class="button">' + rcmail.gettext('allevents', 'calendar') + '</a>' +
             (action != 'remove' ? '<a href="#new" class="button">' + rcmail.gettext('saveasnew', 'calendar') + '</a>' : '') +
-        '</div>');
+          '</div>';
+      }
+      
+      // show dialog
+      if (html) {
+        var $dialog = $('<div>').html(html);
       
         $dialog.find('a.button').button().click(function(e){
-        event.savemode = String(this.href).replace(/.+#/, '');
+          data.savemode = String(this.href).replace(/.+#/, '');
-        update_event(action, event);
+          if ($dialog.find('input.confirm-attendees-donotify').get(0))
+            data._notify = $dialog.find('input.confirm-attendees-donotify').get(0).checked ? 1 : 0;
+          update_event(action, data);
           $dialog.dialog("destroy").hide();
           return false;
         });
         
+        var buttons = [{
+          text: rcmail.gettext('cancel', 'calendar'),
+          click: function() {
+            $(this).dialog("close");
+          }
+        }];
+        
+        if (!event.recurrence) {
+          buttons.push({
+            text: rcmail.gettext((action == 'remove' ? 'remove' : 'save'), 'calendar'),
+            click: function() {
+              data._notify = $dialog.find('input.confirm-attendees-donotify').get(0).checked ? 1 : 0;
+              update_event(action, data);
+              $(this).dialog("close");
+            }
+          });
+        }
+      
         $dialog.dialog({
           modal: true,
           width: 420,
           dialogClass: 'warning',
-        title: rcmail.gettext((action == 'remove' ? 'removerecurringevent' : 'changerecurringevent'), 'calendar'),
+          title: rcmail.gettext((action == 'remove' ? 'removeeventconfirm' : 'changeeventconfirm'), 'calendar'),
-        buttons: [
+          buttons: buttons,
-          {
-            text: rcmail.gettext('cancel', 'calendar'),
-            click: function() {
-              $(this).dialog("close");
-            }
-          }
-        ],
           close: function(){
             $dialog.dialog("destroy").hide();
+            if (!rcmail.busy)
               fc.fullCalendar('refetchEvents');
           }
-      }).show();
+        }).addClass('event-update-confirm').show();
+        
+        return false;
+      }
+      // show regular confirm box when deleting
+      else if (action == 'remove') {
+        if (!confirm(rcmail.gettext('deleteventconfirm', 'calendar')))
+          return false;
+      }
+
+      // do update
+      update_event(action, data);
       
       return true;
     };
@@ -1361,17 +1410,8 @@ function rcube_calendar_ui(settings)
 
     // delete the given event after showing a confirmation dialog
     this.delete_event = function(event) {
-      // show extended confirm dialog for recurring events, use jquery UI dialog
+      // show confirm dialog for recurring events, use jquery UI dialog
-      if (event.recurrence)
+      return update_event_confirm('remove', event, { id:event.id, calendar:event.calendar });
-        return recurring_edit_confirm({ id:event.id, calendar:event.calendar }, 'remove');
-      
-      // send remove request to plugin
-      if (confirm(rcmail.gettext('deleteventconfirm', 'calendar'))) {
-        update_event('remove', { id:event.id, calendar:event.calendar });
-        return true;
-      }
-
-      return false;
     };
     
     // opens a jquery UI dialog with event properties (or empty for creating a new calendar)
@@ -1752,10 +1792,7 @@ function rcube_calendar_ui(settings)
           end: date2unixtime(event.end),
           allday: allDay?1:0
         };
-        if (event.recurrence)
+        update_event_confirm('move', event, data);
-          recurring_edit_confirm(data, 'move');
-        else
-          update_event('move', data);
       },
       // callback for event resizing
       eventResize: function(event, delta) {
@@ -1766,10 +1803,7 @@ function rcube_calendar_ui(settings)
           start: date2unixtime(event.start),
           end: date2unixtime(event.end)
         };
-        if (event.recurrence)
+        update_event_confirm('resize', event, data);
-          recurring_edit_confirm(data, 'resize');
-        else
-          update_event('resize', data);
       },
       viewDisplay: function(view) {
         me.eventcount = [];
@@ -2046,7 +2080,6 @@ window.rcmail && rcmail.addEventListener('init', function(evt) {
   rcmail.addEventListener('plugin.reload_calendar', function(p){ $('#calendar').fullCalendar('refetchEvents', cal.calendars[p.source]); });
   rcmail.addEventListener('plugin.destroy_source', function(p){ cal.calendar_destroy_source(p.id); });
   rcmail.addEventListener('plugin.unlock_saving', function(p){ rcmail.set_busy(false, null, cal.saving_lock); });
-  rcmail.addEventListener('plugin.ping_url', function(p){ p.event = null; new Image().src = rcmail.url(p.action, p); });
 
   // let's go
   var cal = new rcube_calendar_ui(rcmail.env.calendar_settings);

plugins/calendar/drivers/calendar_driver.php

@@ -33,6 +33,7 @@
  *         'start' => <unixtime>,  // Event start date/time as unix timestamp
  *           'end' => <unixtime>,  // Event end date/time as unix timestamp
  *        'allday' => true|false,  // Boolean flag if this is an all-day event
+ *       'changed' => <unixtime>, // Last modification date of event
  *         'title' => 'Event title/summary',
  *      'location' => 'Location string',
  *   'description' => 'Event description',

plugins/calendar/drivers/database/database_driver.php

@@ -686,6 +686,7 @@ class database_driver extends calendar_driver
     $event['start'] = strtotime($event['start']);
     $event['end'] = strtotime($event['end']);
     $event['allday'] = intval($event['all_day']);
+    $event['changed'] = strtotime($event['changed']);
     $event['free_busy'] = $free_busy_map[$event['free_busy']];
     $event['calendar'] = $event['calendar_id'];
     $event['recurrence_id'] = intval($event['recurrence_id']);

plugins/calendar/drivers/kolab/kolab_calendar.php

@@ -561,6 +561,7 @@ class kolab_calendar
       'free_busy' => $rec['show-time-as'],
       'priority' => isset($priority_map[$rec['priority']]) ? $priority_map[$rec['priority']] : 1,
       'sensitivity' => $sensitivity_map[$rec['sensitivity']],
+      'changed' => $rec['last-modification-date'],
       'calendar' => $this->id,
     );
   }

plugins/calendar/drivers/kolab/kolab_driver.php

@@ -310,7 +310,7 @@ class kolab_driver extends calendar_driver
       $success = $storage->insert_event($event);
       
       if ($success)
-        $this->rc->output->command('plugin.ping_url', array('action' => 'push-freebusy', 'source' => $storage->id));
+        $this->rc->output->command('plugin.ping_url', array('action' => 'calendar/push-freebusy', 'source' => $storage->id));
       
       return $success;
     }
@@ -405,7 +405,7 @@ class kolab_driver extends calendar_driver
     }
 
     if ($success)
-      $this->rc->output->command('plugin.ping_url', array('action' => 'push-freebusy', 'source' => $storage->id));
+      $this->rc->output->command('plugin.ping_url', array('action' => 'calendar/push-freebusy', 'source' => $storage->id));
 
     return $success;
   }
@@ -558,7 +558,7 @@ class kolab_driver extends calendar_driver
     }
     
     if ($success)
-      $this->rc->output->command('plugin.ping_url', array('action' => 'push-freebusy', 'source' => $storage->id));
+      $this->rc->output->command('plugin.ping_url', array('action' => 'calendar/push-freebusy', 'source' => $storage->id));
     
     return $success;
   }

plugins/calendar/lib/calendar_ical.php

@@ -78,11 +78,13 @@ class calendar_ical
   {
     $event = array(
       'uid' => $ve->getAttributeDefault('UID'),
+      'changed' => $ve->getAttributeDefault('DTSTAMP', 0),
       'title' => $ve->getAttributeDefault('SUMMARY'),
-      'description' => $ve->getAttributeDefault('DESCRIPTION'),
-      'location' => $ve->getAttributeDefault('LOCATION'),
       'start' => $ve->getAttribute('DTSTART'),
       'end' => $ve->getAttribute('DTEND'),
+      // set defaults
+      'free_busy' => 'busy',
+      'priority' => 1,
     );
     
     // check for all-day dates
@@ -94,10 +96,96 @@ class calendar_ical
       $event['end'] = gmmktime(0, 0, 0, $event['end']['month'], $event['end']['mday'], $event['end']['year']) + $this->cal->gmt_offset - 60;
     }
     
-    // TODO: complete this
+    // map other attributes to internal fields
+    $_attendees = array();
+    foreach ($ve->getAllAttributes() as $attr) {
+      switch ($attr['name']) {
+        case 'ORGANIZER':
+          $organizer = array(
+            'name' => $attr['params']['CN'],
+            'email' => preg_replace('/^mailto:/', '', $attr['value']),
+            'role' => 'ORGANIZER',
+            'status' => 'ACCEPTED',
+          );
+          if (isset($_attendees[$organizer['email']])) {
+            $i = $_attendees[$organizer['email']];
+            $event['attendees'][$i]['role'] = $organizer['role'];
+          }
+          break;
         
+        case 'ATTENDEE':
+          $attendee = array(
+            'name' => $attr['params']['CN'],
+            'email' => preg_replace('/^mailto:/', '', $attr['value']),
+            'role' => $attr['params']['ROLE'] ? $attr['params']['ROLE'] : 'REQ-PARTICIPANT',
+            'status' => $attr['params']['PARTSTAT'],
+            'rsvp' => $attr['params']['RSVP'] == 'TRUE',
+          );
+          if ($organizer && $organizer['email'] == $attendee['email'])
+            $attendee['role'] = 'ORGANIZER';
           
-    // make sure event has an UID
+          $event['attendees'][] = $attendee;
+          $_attendees[$attendee['email']] = count($event['attendees']) - 1;
+          break;
+          
+        case 'TRANSP':
+          $event['free_busy'] = $attr['value'] == 'TRANSPARENT' ? 'free' : 'busy';
+          break;
+        
+        case 'STATUS':
+          if ($attr['value'] == 'TENTATIVE')
+            $event['free_busy'] == 'tentative';
+          break;
+        
+        case 'PRIORITY':
+          if (is_numeric($attr['value'])) {
+            $event['priority'] = $attr['value'] <= 4 ? 2 /* high */ :
+              ($attr['value'] == 5 ? 1 /* normal */ : 0 /* low */);
+          }
+          break;
+        
+        case 'RRULE':
+          // parse recurrence rule attributes
+          foreach (explode(';', $attr['value']) as $par) {
+            list($k, $v) = explode('=', $par);
+            $params[$k] = $v;
+          }
+          if ($params['UNTIL'])
+            $params['UNTIL'] = $ve->_parseDateTime($params['UNTIL']);
+          if (!$params['INTERVAL'])
+            $params['INTERVAL'] = 1;
+          
+          $event['recurrence'] = $params;
+          break;
+        
+        case 'EXDATE':
+          break;
+        
+        case 'DESCRIPTION':
+        case 'LOCATION':
+          $event[strtolower($attr['name'])] = $attr['value'];
+          break;
+        
+        case 'CLASS':
+        case 'X-CALENDARSERVER-ACCESS':
+          $sensitivity_map = array('PUBLIC' => 0, 'PRIVATE' => 1, 'CONFIDENTIAL' => 2);
+          $event['sensitivity'] = $sensitivity_map[$attr['value']];
+          break;
+
+        case 'X-MICROSOFT-CDO-BUSYSTATUS':
+          if ($attr['value'] == 'OOF')
+            $event['free_busy'] == 'outofoffice';
+          else if (in_array($attr['value'], array('FREE', 'BUSY', 'TENTATIVE')))
+            $event['free_busy'] = strtolower($attr['value']);
+          break;
+      }
+    }
+    
+    // add organizer to attendees list if not already present
+    if ($organizer && !isset($_attendees[$organizer['email']]))
+      array_unshift($event['attendees'], $organizer);
+
+    // make sure the event has an UID
     if (!$event['uid'])
       $event['uid'] = $this->cal->$this->generate_uid();
     
@@ -109,9 +197,11 @@ class calendar_ical
    * Export events to iCalendar format
    *
    * @param  array   Events as array
+   * @param  string  VCalendar method to advertise
+   * @param  boolean Directly send data to stdout instead of returning
    * @return string  Events in iCalendar format (http://tools.ietf.org/html/rfc5545)
    */
-  public function export($events, $method = null)
+  public function export($events, $method = null, $write = false)
   {
     if (!empty($this->rc->user->ID)) {
       $ical = "BEGIN:VCALENDAR" . self::EOL;
@@ -122,56 +212,72 @@ class calendar_ical
       if ($method)
         $ical .= "METHOD:" . strtoupper($method) . self::EOL;
         
+      if ($write) {
+        echo $ical;
+        $ical = '';
+      }
+      
       foreach ($events as $event) {
-        $ical .= "BEGIN:VEVENT" . self::EOL;
+        $vevent = "BEGIN:VEVENT" . self::EOL;
-        $ical .= "UID:" . self::escpape($event['uid']) . self::EOL;
+        $vevent .= "UID:" . self::escpape($event['uid']) . self::EOL;
+        $vevent .= "DTSTAMP:" . gmdate('Ymd\THis\Z', $event['changed'] ? $event['changed'] : time()) . self::EOL;
         // correctly set all-day dates
         if ($event['allday']) {
-          $ical .= "DTSTART;VALUE=DATE:" . gmdate('Ymd', $event['start'] + $this->cal->gmt_offset) . self::EOL;
+          $vevent .= "DTSTART;VALUE=DATE:" . gmdate('Ymd', $event['start'] + $this->cal->gmt_offset) . self::EOL;
-          $ical .= "DTEND;VALUE=DATE:" . gmdate('Ymd', $event['end'] + $this->cal->gmt_offset + 60) . self::EOL;  // ends the next day
+          $vevent .= "DTEND;VALUE=DATE:" . gmdate('Ymd', $event['end'] + $this->cal->gmt_offset + 60) . self::EOL;  // ends the next day
         }
         else {
-          $ical .= "DTSTART:" . gmdate('Ymd\THis\Z', $event['start']) . self::EOL;
+          $vevent .= "DTSTART:" . gmdate('Ymd\THis\Z', $event['start']) . self::EOL;
-          $ical .= "DTEND:" . gmdate('Ymd\THis\Z', $event['end']) . self::EOL;
+          $vevent .= "DTEND:" . gmdate('Ymd\THis\Z', $event['end']) . self::EOL;
         }
-        $ical .= "SUMMARY:" . self::escpape($event['title']) . self::EOL;
+        $vevent .= "SUMMARY:" . self::escpape($event['title']) . self::EOL;
-        $ical .= "DESCRIPTION:" . self::escpape($event['description']) . self::EOL;
+        $vevent .= "DESCRIPTION:" . self::escpape($event['description']) . self::EOL;
         
         if (!empty($event['attendees'])){
-          $ical .= $this->_get_attendees($event['attendees']);
+          $vevent .= $this->_get_attendees($event['attendees']);
         }
 
         if (!empty($event['location'])) {
-          $ical .= "LOCATION:" . self::escpape($event['location']) . self::EOL;
+          $vevent .= "LOCATION:" . self::escpape($event['location']) . self::EOL;
         }
         if ($event['recurrence']) {
-          $ical .= "RRULE:" . calendar::to_rrule($event['recurrence']) . self::EOL;
+          $vevent .= "RRULE:" . calendar::to_rrule($event['recurrence'], self::EOL) . self::EOL;
         }
         if(!empty($event['categories'])) {
-          $ical .= "CATEGORIES:" . self::escpape(strtoupper($event['categories'])) . self::EOL;
+          $vevent .= "CATEGORIES:" . self::escpape(strtoupper($event['categories'])) . self::EOL;
         }
         if ($event['sensitivity'] > 0) {
-          $ical .= "X-CALENDARSERVER-ACCESS:CONFIDENTIAL";
+          $vevent .= "CLASS:" . ($event['sensitivity'] == 2 ? 'CONFIDENTIAL' : 'PRIVATE') . self::EOL;
         }
         if ($event['alarms']) {
           list($trigger, $action) = explode(':', $event['alarms']);
           $val = calendar::parse_alaram_value($trigger);
           
-          $ical .= "BEGIN:VALARM\n";
+          $vevent .= "BEGIN:VALARM\n";
-          if ($val[1]) $ical .= "TRIGGER:" . preg_replace('/^([-+])(.+)/', '\\1PT\\2', $trigger) . self::EOL;
+          if ($val[1]) $vevent .= "TRIGGER:" . preg_replace('/^([-+])(.+)/', '\\1PT\\2', $trigger) . self::EOL;
-          else         $ical .= "TRIGGER;VALUE=DATE-TIME:" . gmdate('Ymd\THis\Z', $val[0]) . self::EOL;
+          else         $vevent .= "TRIGGER;VALUE=DATE-TIME:" . gmdate('Ymd\THis\Z', $val[0]) . self::EOL;
-          if ($action) $ical .= "ACTION:" . self::escpape(strtoupper($action)) . self::EOL;
+          if ($action) $vevent .= "ACTION:" . self::escpape(strtoupper($action)) . self::EOL;
-          $ical .= "END:VALARM\n";
+          $vevent .= "END:VALARM\n";
         }
-        $ical .= "TRANSP:" . ($event['free_busy'] == 'free' ? 'TRANSPARENT' : 'OPAQUE') . self::EOL;
+        $vevent .= "TRANSP:" . ($event['free_busy'] == 'free' ? 'TRANSPARENT' : 'OPAQUE') . self::EOL;
         
         // TODO: export attachments
         
-        $ical .= "END:VEVENT" . self::EOL;
+        $vevent .= "END:VEVENT" . self::EOL;
+        
+        if ($write)
+          echo rcube_vcard::rfc2425_fold($vevent);
+        else
+          $ical .= $vevent;
       }
       
       $ical .= "END:VCALENDAR" . self::EOL;
       
+      if ($write) {
+        echo $ical;
+        return true;
+      }
+
       // fold lines to 75 chars
       return rcube_vcard::rfc2425_fold($ical);
     }

plugins/calendar/localization/en_US.inc

@@ -60,6 +60,7 @@ $labels['generated'] = 'generated at';
 $labels['selectdate'] = 'Select date';
 $labels['printdescriptions'] = 'Print descriptions';
 $labels['parentcalendar'] = 'Superior calendar';
+$labels['importtocalendar'] = 'Save to my calendar';
 
 // alarm/reminder settings
 $labels['alarmemail'] = 'Send Email';
@@ -104,7 +105,7 @@ $labels['availtentative'] = 'Tentative';
 $labels['availoutofoffice'] = 'Out of Office';
 $labels['scheduletime'] = 'Find availability';
 $labels['sendinvitations'] = 'Send invitations';
-$labels['sendnotifications'] = 'Notify attendees about modifications';
+$labels['sendnotifications'] = 'Notify participants about modifications';
 $labels['onlyworkinghours'] = 'Find availability within my working hours';
 $labels['reqallattendees'] = 'Required/all participants';
 $labels['prevslot'] = 'Previous Slot';
@@ -133,6 +134,10 @@ $labels['searchnoresults'] = 'No events found in the selected calendars.';
 $labels['successremoval'] = 'The event has been deleted successfully.';
 $labels['successrestore'] = 'The event has been restored successfully.';
 $labels['errornotifying'] = 'Failed to send notifications to event participants';
+$labels['errorimportingevent'] = 'Failed to import the event';
+$labels['newerversionexists'] = 'A newer version of this event already exists! Aborted.';
+$labels['nowritecalendarfound'] = 'No calendar found to save the event';
+$labels['importedsuccessfully'] = 'The event was successfully added to \'$calendar\'';
 
 // recurrence form
 $labels['repeat'] = 'Repeat';
@@ -162,8 +167,8 @@ $labels['fourth'] = 'fourth';
 $labels['last'] = 'last';
 $labels['dayofmonth'] = 'Day of month';
 
-$labels['changerecurringevent'] = 'Change recurring event';
+$labels['changeeventconfirm'] = 'Change event';
-$labels['removerecurringevent'] = 'Remove recurring event';
+$labels['removeeventconfirm'] = 'Remove event';
 $labels['changerecurringeventwarning'] = 'This is a recurring event. Would you like to edit the current event only, this and all future occurences, all occurences or save it as a new event?';
 $labels['removerecurringeventwarning'] = 'This is a recurring event. Would you like to remove the current event only, this and all future occurences or all occurences of this event?';
 $labels['currentevent'] = 'Current';

plugins/calendar/skins/default/calendar.css

@@ -472,14 +472,20 @@ td.topalign {
 	padding: 0.2em 0;
 }
 
-.edit-recurring-warning {
+.ui-dialog .event-update-confirm {
+	padding: 0 0.5em 0.5em 0.5em;
+}
+
+.edit-recurring-warning,
+.event-update-confirm .message {
 	margin-top: 0.5em;
 	padding: 0.8em;
 	background-color: #F7FDCB;
 	border: 1px solid #C2D071;
 }
 
-.edit-recurring-warning .message {
+.edit-recurring-warning .message,
+.event-update-confirm .message {
 	margin-bottom: 0.5em;
 }
 
@@ -487,17 +493,23 @@ td.topalign {
 	padding-left: 20px;
 }
 
-.edit-recurring-warning span.ui-icon {
+.event-update-confirm .savemode {
+	padding-left: 30px;
+}
+
+.edit-recurring-warning span.ui-icon,
+.event-update-confirm span.ui-icon {
 	float: left;
 	margin: 0 7px 20px 0;
 }
 
-.edit-recurring-warning label {
+.edit-recurring-warning label,
+.event-update-confirm label {
 	min-width: 3em;
 	padding-right: 1em;
 }
 
-.edit-recurring-warning a.button {
+.event-update-confirm a.button {
 	margin: 0 0.5em 0 0.2em;
 	min-width: 5em;
 }