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authorFederico Mena Quintero <federico@helixcode.com>2000-02-12 10:03:58 +0800
committerArturo Espinosa <unammx@src.gnome.org>2000-02-12 10:03:58 +0800
commitd2fe58c56857e9e4b2e37f87174da6956b0d985c (patch)
treee71df413e8a7862616755f64700b1dbbc513f9be /calendar/cal-backend.c
parent123f506198c535dcb073c1998fed37c25ad131f9 (diff)
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Implemented.
2000-02-11 Federico Mena Quintero <federico@helixcode.com> * cal-client.c (cal_client_update_object): Implemented. * cal.c (cal_notify_update): New function to notify the listener about an updated object. (Cal_update_object): Implemented. (Cal_get_uids): set_release() the sequence to TRUE. (Cal_get_events_in_range): Likewise. * cal-backend.c (remove_object): New function to remove objects from a calendar backend. (cal_backend_update_object): New public function to update an object and notify clients about it. * evolution-calendar.idl (Cal): Added update_object() and delete_object() methods. (Listener): Removed the obj_changed method and renamed obj_added to obj_updated. We now only have updated and removed notifiers. * cal-listener.[ch]: Removed the "changed" notification code. Changed the "added" notification code to the "updated" notification. * cal-client.c: Likewise. * tlacuache.c (create_cal_factory): Connect to "destroy" on the factory and exit the main loop when the factory is destroyed. * cal-factory.c (backend_destroy_cb): New callback used when a backend is destroyed. Removes the backend from the factory's hash table and unrefs the factory if all backends go away. (add_calendar_client): Free the environment. * cal.c (cal_new): Use bonobo_object_unref() if we fail to initialize. * cal-listener.c (cal_listener_new): Likewise. * layout.c (layout_events): Plug li.partition memory leak. svn path=/trunk/; revision=1742
Diffstat (limited to 'calendar/cal-backend.c')
-rw-r--r--calendar/cal-backend.c139
1 files changed, 138 insertions, 1 deletions
diff --git a/calendar/cal-backend.c b/calendar/cal-backend.c
index 18ed6a6c86..1ce4b615c3 100644
--- a/calendar/cal-backend.c
+++ b/calendar/cal-backend.c
@@ -197,6 +197,19 @@ cal_backend_destroy (GtkObject *object)
/* iCalObject manipulation functions */
+/* Looks up an object by its UID in the backend's object hash table */
+static iCalObject *
+lookup_object (CalBackend *backend, const char *uid)
+{
+ CalBackendPrivate *priv;
+ iCalObject *ico;
+
+ priv = backend->priv;
+ ico = g_hash_table_lookup (priv->object_hash, uid);
+
+ return ico;
+}
+
/* Ensures that an iCalObject has a unique identifier. If it doesn't have one,
* it will create one for it. Returns whether an UID was created or not.
*/
@@ -275,6 +288,49 @@ add_object (CalBackend *backend, iCalObject *ico)
#endif
}
+/* Removes an object from the backend's hash and lists. Does not perform
+ * notification on the clients.
+ */
+static void
+remove_object (CalBackend *backend, iCalObject *ico)
+{
+ CalBackendPrivate *priv;
+ GList **list, *l;
+
+ priv = backend->priv;
+
+ g_assert (ico->uid != NULL);
+ g_hash_table_remove (priv->object_hash, ico->uid);
+
+ switch (ico->type) {
+ case ICAL_EVENT:
+ list = &priv->events;
+ break;
+
+ case ICAL_TODO:
+ list = &priv->todos;
+ break;
+
+ case ICAL_JOURNAL:
+ list = &priv->journals;
+ break;
+
+ default:
+ list = NULL;
+ }
+
+ if (!list)
+ return;
+
+ l = g_list_find (*list, ico);
+ g_assert (l != NULL);
+
+ *list = g_list_remove_link (*list, l);
+ g_list_free_1 (l);
+
+ ical_object_destroy (ico);
+}
+
/* Load a calendar from a VObject */
static void
load_from_vobject (CalBackend *backend, VObject *vobject)
@@ -609,7 +665,7 @@ cal_backend_get_object (CalBackend *backend, const char *uid)
g_assert (priv->object_hash != NULL);
- ico = g_hash_table_lookup (priv->object_hash, uid);
+ ico = lookup_object (backend, uid);
if (!ico)
return NULL;
@@ -782,3 +838,84 @@ cal_backend_get_events_in_range (CalBackend *backend, time_t start, time_t end)
c.event_list = g_list_sort (c.event_list, compare_instance_func);
return c.event_list;
}
+
+/* Notifies a backend's clients that an object was updated */
+static void
+notify_update (CalBackend *backend, const char *uid)
+{
+ CalBackendPrivate *priv;
+ GList *l;
+
+ priv = backend->priv;
+
+ for (l = priv->clients; l; l = l->next) {
+ Cal *cal;
+
+ cal = CAL (l->data);
+ cal_notify_update (cal, uid);
+ }
+}
+
+/**
+ * cal_backend_update_object:
+ * @backend: A calendar backend.
+ * @uid: Unique identifier of the object to update.
+ * @calobj: String representation of the new calendar object.
+ *
+ * Updates an object in a calendar backend. It will replace any existing object
+ * that has the same UID as the specified one. The backend will in turn notify
+ * all of its clients about the change.
+ *
+ * Return value: TRUE on success, FALSE on being passed an invalid object.
+ **/
+gboolean
+cal_backend_update_object (CalBackend *backend, const char *uid, const char *calobj)
+{
+ CalBackendPrivate *priv;
+ iCalObject *ico, *new_ico;
+ CalObjFindStatus status;
+
+ g_return_val_if_fail (backend != NULL, FALSE);
+ g_return_val_if_fail (IS_CAL_BACKEND (backend), FALSE);
+
+ priv = backend->priv;
+ g_return_val_if_fail (priv->loaded, FALSE);
+
+ g_return_val_if_fail (uid != NULL, FALSE);
+ g_return_val_if_fail (calobj != NULL, FALSE);
+
+ /* Pull the object from the string */
+
+ status = ical_object_find_in_string (uid, calobj, &new_ico);
+
+ if (status != CAL_OBJ_FIND_SUCCESS)
+ return FALSE;
+
+ /* Update the object */
+
+ ico = lookup_object (backend, uid);
+
+ if (ico)
+ remove_object (backend, ico);
+
+ add_object (backend, new_ico);
+
+ notify_update (backend, new_ico->uid);
+ return TRUE;
+}
+
+void
+cal_backend_remove_object (CalBackend *backend, const char *uid)
+{
+ CalBackendPrivate *priv;
+
+ g_return_if_fail (backend != NULL);
+ g_return_if_fail (IS_CAL_BACKEND (backend));
+
+ priv = backend->priv;
+ g_return_if_fail (priv->loaded);
+
+ g_return_if_fail (uid != NULL);
+
+ /* FIXME */
+}