From a40f98f433ed324b7fc3992f2c59d37d11c4cd73 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Wed, 27 Jul 2011 10:48:40 +0200
Subject: [PATCH] Enable free-busy UI for Kolab; show passed free-busy slots as
 'unknown'

---
 plugins/calendar/calendar_ui.js                 | 2 +-
 plugins/calendar/drivers/kolab/kolab_driver.php | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/plugins/calendar/calendar_ui.js b/plugins/calendar/calendar_ui.js
index 59fa93a7..938f6932 100644
--- a/plugins/calendar/calendar_ui.js
+++ b/plugins/calendar/calendar_ui.js
@@ -462,7 +462,7 @@ function rcube_calendar_ui(settings)
         for (var j=0; j < event.attendees.length; j++)
           add_attendee(event.attendees[j], true);
       }
-//      $('#edit-attendee-schedule')[(calendar.freebusy?'show':'hide')]();
+      $('#edit-attendee-schedule')[(calendar.freebusy?'show':'hide')]();
 
       // attachments
       if (calendar.attachments) {
diff --git a/plugins/calendar/drivers/kolab/kolab_driver.php b/plugins/calendar/drivers/kolab/kolab_driver.php
index 20329332..7b97afa1 100644
--- a/plugins/calendar/drivers/kolab/kolab_driver.php
+++ b/plugins/calendar/drivers/kolab/kolab_driver.php
@@ -26,6 +26,7 @@ class kolab_driver extends calendar_driver
   // features this backend supports
   public $alarms = true;
   public $attendees = true;
+  public $freebusy = true;
   public $attachments = true;
   public $undelete = true;
   public $categoriesimmutable = true;
@@ -786,7 +787,11 @@ class kolab_driver extends calendar_driver
           $type = $params[$from]['FBTYPE'];
           $result[] = array($from, $to, isset($fbtypemap[$type]) ? $fbtypemap[$type] : calendar::FREEBUSY_BUSY);
         }
-        
+
+        // set period from $start till the begin of the free-busy information as 'unknown'
+        if (($fbstart = $fb->getStart()) && $start < $fbstart) {
+          array_unshift($result, array($start, $fbstart, calendar::FREEBUSY_UNKNOWN));
+        }
         return $result;
       }
     }