[evolution-data-server] I#106 - [IMAPx] Return cached folder list even when being online

[Milan Crha <mcrha src gnome org>]

commit 4a801883de0c7b9aaedcfadac5f78a6dd29e5a05
Author: Milan Crha <mcrha redhat com>
Date:   Tue May 7 11:58:05 2019 +0200

    I#106 - [IMAPx] Return cached folder list even when being online
    
    Closes https://gitlab.gnome.org/GNOME/evolution-data-server/issues/106

 src/camel/providers/imapx/camel-imapx-store.c | 50 +++++++++++++++++----------
 1 file changed, 31 insertions(+), 19 deletions(-)
---
diff --git a/src/camel/providers/imapx/camel-imapx-store.c b/src/camel/providers/imapx/camel-imapx-store.c
index 887efc624..868f7b7ff 100644
--- a/src/camel/providers/imapx/camel-imapx-store.c
+++ b/src/camel/providers/imapx/camel-imapx-store.c
@@ -1879,9 +1879,10 @@ exit:
 static void
 imapx_refresh_finfo (CamelSession *session,
                      GCancellable *cancellable,
-                     CamelIMAPXStore *store,
+                     gpointer user_data,
                      GError **error)
 {
+       CamelIMAPXStore *store = user_data;
        CamelService *service;
        const gchar *display_name;
 
@@ -2069,6 +2070,30 @@ imapx_store_get_folder_sync (CamelStore *store,
        return folder;
 }
 
+static void
+imapx_store_schedule_folder_list_update (CamelStore *store)
+{
+       CamelSession *session;
+       CamelService *service;
+
+       g_return_if_fail (CAMEL_IS_IMAPX_STORE (store));
+
+       service = CAMEL_SERVICE (store);
+       session = camel_service_ref_session (service);
+
+       if (session) {
+               gchar *description;
+
+               description = g_strdup_printf (_("Retrieving folder list for “%s”"), 
camel_service_get_display_name (service));
+
+               camel_session_submit_job (session, description, imapx_refresh_finfo,
+                       g_object_ref (store), g_object_unref);
+
+               g_object_unref (session);
+               g_free (description);
+       }
+}
+
 static CamelFolderInfo *
 imapx_store_get_folder_info_sync (CamelStore *store,
                                   const gchar *top,
@@ -2116,29 +2141,16 @@ imapx_store_get_folder_info_sync (CamelStore *store,
                        time (NULL) - imapx_store->priv->last_refresh_time;
 
                if (time_since_last_refresh > FINFO_REFRESH_INTERVAL) {
-                       CamelSession *session;
-                       gchar *description;
-
                        imapx_store->priv->last_refresh_time = time (NULL);
-
-                       session = camel_service_ref_session (service);
-                       if (session) {
-                               description = g_strdup_printf (_("Retrieving folder list for “%s”"), 
camel_service_get_display_name (service));
-
-                               camel_session_submit_job (
-                                       session, description, (CamelSessionCallback)
-                                       imapx_refresh_finfo,
-                                       g_object_ref (store),
-                                       (GDestroyNotify) g_object_unref);
-
-                               g_object_unref (session);
-                               g_free (description);
-                       }
+                       imapx_store_schedule_folder_list_update (store);
                }
        }
 
        /* Avoid server interaction if the FAST flag is set. */
-       if (!initial_setup && flags & CAMEL_STORE_FOLDER_INFO_FAST) {
+       if ((flags & CAMEL_STORE_FOLDER_INFO_FAST)) {
+               if (initial_setup)
+                       imapx_store_schedule_folder_list_update (store);
+
                fi = get_folder_info_offline (store, top, flags, cancellable, error);
                goto exit;
        }