[evolution] EClientSelector: Pre-fetch selected clients.

[Matthew Barnes <mbarnes src gnome org>]

commit 7bd9b878a383628dcebda23fd556a21b58812d95
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Mar 1 18:02:37 2013 -0500

    EClientSelector: Pre-fetch selected clients.

 e-util/e-client-selector.c |   51 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 51 insertions(+), 0 deletions(-)
---
diff --git a/e-util/e-client-selector.c b/e-util/e-client-selector.c
index e164c80..6ea98ea 100644
--- a/e-util/e-client-selector.c
+++ b/e-util/e-client-selector.c
@@ -141,6 +141,21 @@ client_selector_client_notify_cb (EClientCache *client_cache,
 }
 
 static void
+client_selector_prefetch_cb (GObject *source_object,
+                             GAsyncResult *result,
+                             gpointer user_data)
+{
+       EClient *client;
+
+       /* We don't care about errors here.  this is just to try and
+        * get the EClient instances we'll need cached ahead of time. */
+       client = e_client_selector_get_client_finish (
+               E_CLIENT_SELECTOR (source_object), result, NULL);
+
+       g_clear_object (&client);
+}
+
+static void
 client_selector_set_client_cache (EClientSelector *selector,
                                   EClientCache *client_cache)
 {
@@ -224,9 +239,12 @@ client_selector_constructed (GObject *object)
 {
        EClientSelector *selector;
        EClientCache *client_cache;
+       ESourceRegistry *registry;
        GtkTreeView *tree_view;
        GtkTreeViewColumn *column;
        GtkCellRenderer *renderer;
+       const gchar *extension_name;
+       GList *list, *link;
        gulong handler_id;
 
        selector = E_CLIENT_SELECTOR (object);
@@ -270,6 +288,39 @@ client_selector_constructed (GObject *object)
        selector->priv->client_notify_online_handler_id = handler_id;
 
        g_object_unref (client_cache);
+
+       /* Pre-fetch EClient instances for all relevant ESources.
+        * This is just to try and make sure they get cache ahead
+        * of time, so we need not worry about reporting errors. */
+
+       registry = e_source_selector_get_registry (
+               E_SOURCE_SELECTOR (selector));
+       extension_name = e_source_selector_get_extension_name (
+               E_SOURCE_SELECTOR (selector));
+
+       list = e_source_registry_list_sources (registry, extension_name);
+
+       for (link = list; link != NULL; link = g_list_next (link)) {
+               ESource *source = E_SOURCE (link->data);
+               ESourceExtension *extension;
+
+               extension = e_source_get_extension (source, extension_name);
+
+               /* If selectable, skip unselected sources. */
+               if (E_IS_SOURCE_SELECTABLE (extension)) {
+                       ESourceSelectable *selectable;
+
+                       selectable = E_SOURCE_SELECTABLE (extension);
+                       if (!e_source_selectable_get_selected (selectable))
+                               continue;
+               }
+
+               e_client_selector_get_client (
+                       selector, source, NULL,
+                       client_selector_prefetch_cb, NULL);
+       }
+
+       g_list_free_full (list, (GDestroyNotify) g_object_unref);
 }
 
 static void