[evolution] EBookShellView: Handle error signals from address book backends.

[Matthew Barnes <mbarnes src gnome org>]

commit c3268be7377a8d44216abc778d4f42169493cb0c
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Feb 15 18:32:11 2013 -0500

    EBookShellView: Handle error signals from address book backends.

 modules/addressbook/e-book-shell-view-private.c |   42 +++++++++++++++++++++++
 modules/addressbook/e-book-shell-view-private.h |    3 ++
 2 files changed, 45 insertions(+), 0 deletions(-)
---
diff --git a/modules/addressbook/e-book-shell-view-private.c b/modules/addressbook/e-book-shell-view-private.c
index 82b3395..6f23d4f 100644
--- a/modules/addressbook/e-book-shell-view-private.c
+++ b/modules/addressbook/e-book-shell-view-private.c
@@ -417,6 +417,30 @@ book_shell_view_selector_popup_menu_cb (EShellView *shell_view)
 }
 
 static void
+book_shell_view_backend_error_cb (EClientCache *client_cache,
+                                  EClient *client,
+                                  EAlert *alert,
+                                  EBookShellView *book_shell_view)
+{
+       EBookShellContent *book_shell_content;
+       ESource *source;
+       const gchar *extension_name;
+
+       book_shell_content = book_shell_view->priv->book_shell_content;
+
+       source = e_client_get_source (client);
+       extension_name = E_SOURCE_EXTENSION_ADDRESS_BOOK;
+
+       /* Only submit alerts from address book backends. */
+       if (e_source_has_extension (source, extension_name)) {
+               EAlertSink *alert_sink;
+
+               alert_sink = E_ALERT_SINK (book_shell_content);
+               e_alert_sink_submit_alert (alert_sink, alert);
+       }
+}
+
+static void
 book_shell_view_source_removed_cb (ESourceRegistry *registry,
                                    ESource *source,
                                    EBookShellView *book_shell_view)
@@ -549,12 +573,22 @@ e_book_shell_view_private_constructed (EBookShellView *book_shell_view)
 
        /* Keep our own reference to this so we can
         * disconnect our signal handler in dispose(). */
+       priv->client_cache = g_object_ref (e_shell_get_client_cache (shell));
+
+       /* Keep our own reference to this so we can
+        * disconnect our signal handler in dispose(). */
        priv->registry = g_object_ref (e_shell_get_registry (shell));
 
        selector = e_book_shell_sidebar_get_selector (
                E_BOOK_SHELL_SIDEBAR (shell_sidebar));
 
        handler_id = g_signal_connect (
+               priv->client_cache, "backend-error",
+               G_CALLBACK (book_shell_view_backend_error_cb),
+               book_shell_view);
+       priv->backend_error_handler_id = handler_id;
+
+       handler_id = g_signal_connect (
                priv->registry, "source-removed",
                G_CALLBACK (book_shell_view_source_removed_cb),
                book_shell_view);
@@ -589,6 +623,13 @@ e_book_shell_view_private_dispose (EBookShellView *book_shell_view)
 {
        EBookShellViewPrivate *priv = book_shell_view->priv;
 
+       if (priv->backend_error_handler_id > 0) {
+               g_signal_handler_disconnect (
+                       priv->client_cache,
+                       priv->backend_error_handler_id);
+               priv->backend_error_handler_id = 0;
+       }
+
        if (priv->source_removed_handler_id > 0) {
                g_signal_handler_disconnect (
                        priv->registry,
@@ -600,6 +641,7 @@ e_book_shell_view_private_dispose (EBookShellView *book_shell_view)
        g_clear_object (&priv->book_shell_content);
        g_clear_object (&priv->book_shell_sidebar);
 
+       g_clear_object (&priv->client_cache);
        g_clear_object (&priv->registry);
 
        g_hash_table_remove_all (priv->uid_to_view);
diff --git a/modules/addressbook/e-book-shell-view-private.h b/modules/addressbook/e-book-shell-view-private.h
index 108677b..a3fe09a 100644
--- a/modules/addressbook/e-book-shell-view-private.h
+++ b/modules/addressbook/e-book-shell-view-private.h
@@ -84,6 +84,9 @@ struct _EBookShellViewPrivate {
        EBookShellContent *book_shell_content;
        EBookShellSidebar *book_shell_sidebar;
 
+       EClientCache *client_cache;
+       gulong backend_error_handler_id;
+
        ESourceRegistry *registry;
        gulong source_removed_handler_id;