[evolution] Bug #274144 - 'Update attendee status' might not be done multiple times

[Milan Crha <mcrha src gnome org>]

commit 19862450dc4511daabb81c4766879fbc4a059baa
Author: Milan Crha <mcrha redhat com>
Date:   Wed Aug 21 14:34:40 2013 +0200

    Bug #274144 - 'Update attendee status' might not be done multiple times

 modules/itip-formatter/itip-view.c |   90 ++++++++++++++++++++++++++++++++++--
 1 files changed, 86 insertions(+), 4 deletions(-)
---
diff --git a/modules/itip-formatter/itip-view.c b/modules/itip-formatter/itip-view.c
index 32ac52d..1e4a549 100644
--- a/modules/itip-formatter/itip-view.c
+++ b/modules/itip-formatter/itip-view.c
@@ -3499,16 +3499,86 @@ adjust_item (EMailPartItip *pitip,
        }
 }
 
+static gboolean
+same_attendee_status (EMailPartItip *pitip,
+                     ECalComponent *received_comp)
+{
+       ECalComponent *saved_comp;
+       GSList *received_attendees = NULL, *saved_attendees = NULL, *riter, *siter;
+       gboolean same = FALSE;
+
+       g_return_val_if_fail (pitip != NULL, FALSE);
+
+       saved_comp = get_real_item (pitip);
+       if (!saved_comp)
+               return FALSE;
+
+       e_cal_component_get_attendee_list (received_comp, &received_attendees);
+       e_cal_component_get_attendee_list (saved_comp, &saved_attendees);
+
+       same = received_attendees && saved_attendees;
+
+       for (riter = received_attendees; same && riter; riter = g_slist_next (riter)) {
+               const ECalComponentAttendee *rattendee = riter->data;
+
+               if (!rattendee) {
+                       same = FALSE;
+                       continue;
+               }
+
+               /* no need to create a hash table for quicker searches, there might
+                  be one attendee in the received component only */
+               for (siter = saved_attendees; siter; siter = g_slist_next (siter)) {
+                       const ECalComponentAttendee *sattendee = siter->data;
+
+                       if (!sattendee)
+                               continue;
+
+                       if (rattendee->value && sattendee->value &&
+                           g_ascii_strcasecmp (rattendee->value, sattendee->value) == 0) {
+                               same = rattendee->status == sattendee->status;
+                               break;
+                       }
+               }
+
+               /* received attendee was not found in the saved attendees */
+               if (!siter)
+                       same = FALSE;
+       }
+
+       e_cal_component_free_attendee_list (received_attendees);
+       e_cal_component_free_attendee_list (saved_attendees);
+       g_object_unref (saved_comp);
+
+       return same;
+}
+
 static void
 set_buttons_sensitive (EMailPartItip *pitip,
                        ItipView *view)
 {
-       gboolean read_only = TRUE;
+       gboolean enabled = pitip->current_client != NULL;
 
-       if (pitip->current_client)
-               read_only = e_client_is_readonly (E_CLIENT (pitip->current_client));
+       if (enabled && pitip->current_client)
+               enabled = !e_client_is_readonly (E_CLIENT (pitip->current_client));
+
+       itip_view_set_buttons_sensitive (view, enabled);
+
+       if (enabled && itip_view_get_mode (view) == ITIP_VIEW_MODE_REPLY &&
+           pitip->comp && same_attendee_status (pitip, pitip->comp)) {
+               itip_view_add_lower_info_item (
+                       view, ITIP_VIEW_INFO_ITEM_TYPE_INFO,
+                       _("Attendee status updated"));
 
-       itip_view_set_buttons_sensitive (view, pitip->current_client != NULL && !read_only);
+               if (view->priv->dom_document) {
+                       WebKitDOMElement *el;
+
+                       el = webkit_dom_document_get_element_by_id (
+                               view->priv->dom_document, BUTTON_UPDATE_ATTENDEE_STATUS);
+                       webkit_dom_html_button_element_set_disabled (
+                               WEBKIT_DOM_HTML_BUTTON_ELEMENT (el), TRUE);
+               }
+       }
 }
 
 static void
@@ -4948,6 +5018,18 @@ modify_object_cb (GObject *ecalclient,
                itip_view_add_lower_info_item (
                        view, ITIP_VIEW_INFO_ITEM_TYPE_INFO,
                        _("Attendee status updated"));
+
+               if (view->priv->dom_document) {
+                       WebKitDOMElement *el;
+
+                       el = webkit_dom_document_get_element_by_id (
+                               view->priv->dom_document, BUTTON_UPDATE_ATTENDEE_STATUS);
+                       webkit_dom_html_button_element_set_disabled (
+                               WEBKIT_DOM_HTML_BUTTON_ELEMENT (el), TRUE);
+               }
+
+               if (pitip->delete_message && pitip->folder)
+                       camel_folder_delete_message (pitip->folder, pitip->uid);
        }
 }