[evolution/gnome-3-18] Bug 544813 - Allow recurrence editing for non-detached instances

[Milan Crha <mcrha src gnome org>]

commit f24533ac9c3a920f88460945f835d8b455827cfc
Author: Milan Crha <mcrha redhat com>
Date:   Mon Sep 21 15:41:50 2015 +0200

    Bug 544813 - Allow recurrence editing for non-detached instances

 calendar/gui/dialogs/recurrence-page.c |   17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)
---
diff --git a/calendar/gui/dialogs/recurrence-page.c b/calendar/gui/dialogs/recurrence-page.c
index 89daa42..f19ef38 100644
--- a/calendar/gui/dialogs/recurrence-page.c
+++ b/calendar/gui/dialogs/recurrence-page.c
@@ -639,10 +639,23 @@ rpage_get_objects_for_uid_cb (GObject *source_object,
                g_clear_error (&error);
        }
 
+       if (g_slist_length (ecalcomps) > 1 && rpage->priv->comp) {
+               icalcomponent *icalcomp;
+               gboolean has_rrule;
+
+               icalcomp = e_cal_component_get_icalcomponent (rpage->priv->comp);
+               has_rrule = icalcomponent_get_first_property (icalcomp, ICAL_RRULE_PROPERTY) != NULL;
+
+               if (has_rrule) {
+                       /* Not a detached instance, can edit recurrences */
+                       g_slist_free_full (ecalcomps, g_object_unref);
+                       ecalcomps = NULL;
+               }
+       }
+
        update_with_readonly (rpage, g_slist_length (ecalcomps) > 1);
 
-       g_slist_foreach (ecalcomps, (GFunc) g_object_unref, NULL);
-       g_slist_free (ecalcomps);
+       g_slist_free_full (ecalcomps, g_object_unref);
 }
 
 static void