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-rw-r--r--mate-panel/panel-shell.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/mate-panel/panel-shell.c b/mate-panel/panel-shell.c
new file mode 100644
index 00000000..d54da4b9
--- /dev/null
+++ b/mate-panel/panel-shell.c
@@ -0,0 +1,164 @@
+/*
+ * panel-shell.c: panel shell interface implementation
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Authors:
+ * Jacob Berkman <[email protected]>
+ * Colin Walters <[email protected]>
+ * Vincent Untz <[email protected]>
+ */
+
+#include <config.h>
+#include <glib/gi18n.h>
+
+#include <libpanel-util/panel-cleanup.h>
+
+#include "panel-profile.h"
+#include "panel-session.h"
+
+#include "panel-shell.h"
+
+#define PANEL_DBUS_SERVICE "org.mate.Panel"
+
+static GDBusConnection *dbus_connection = NULL;
+
+static void
+panel_shell_on_name_lost (GDBusConnection *connection,
+ const gchar *sender_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *signal_name,
+ GVariant *parameters,
+ gpointer user_data)
+{
+ /* We lost our DBus name, and there is something replacing us.
+ * Tell the SM not to restart us automatically, then exit. */
+ g_printerr ("Panel leaving: a new panel shell is starting.\n");
+
+ panel_session_do_not_restart ();
+ panel_shell_quit ();
+}
+
+static void
+panel_shell_cleanup (gpointer data)
+{
+ if (dbus_connection != NULL) {
+ g_object_unref (dbus_connection);
+ dbus_connection = NULL;
+ }
+}
+
+gboolean
+panel_shell_register (gboolean replace)
+{
+ GBusNameOwnerFlags flags;
+ guint32 request_name_reply;
+ GVariant *result;
+ gboolean retval = FALSE;
+ GError *error = NULL;
+
+ if (dbus_connection != NULL)
+ return TRUE;
+
+ panel_cleanup_register (PANEL_CLEAN_FUNC (panel_shell_cleanup), NULL);
+
+ /* There isn't a sync version of g_bus_own_name, so we have to requeste
+ * the name manually here. There's no ui yet so it's safe to use this
+ * sync api */
+ dbus_connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
+ if (dbus_connection == NULL) {
+ g_warning ("Cannot register the panel shell: %s", error->message);
+ goto register_out;
+ }
+
+ flags = G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT;
+ if (replace)
+ flags |= G_BUS_NAME_OWNER_FLAGS_REPLACE;
+
+ result = g_dbus_connection_call_sync (dbus_connection,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "RequestName",
+ g_variant_new ("(su)",
+ PANEL_DBUS_SERVICE,
+ flags),
+ G_VARIANT_TYPE ("(u)"),
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, &error);
+ if (!result) {
+ g_warning ("Cannot register the panel shell: %s",
+ error->message);
+ g_error_free (error);
+
+ goto register_out;
+ }
+
+ g_variant_get (result, "(u)", &request_name_reply);
+ g_variant_unref (result);
+
+ switch (request_name_reply) {
+ case 1: /* DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER */
+ case 4: /* DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER */
+ retval = TRUE;
+ g_dbus_connection_signal_subscribe (dbus_connection,
+ "org.freedesktop.DBus",
+ "org.freedesktop.DBus",
+ "NameLost",
+ "/org/freedesktop/DBus",
+ PANEL_DBUS_SERVICE,
+ G_DBUS_SIGNAL_FLAGS_NONE,
+ (GDBusSignalCallback)panel_shell_on_name_lost,
+ NULL, NULL);
+ break;
+ case 2: /* DBUS_REQUEST_NAME_REPLY_IN_QUEUE */
+ case 3: /* DBUS_REQUEST_NAME_REPLY_EXISTS */
+ g_printerr ("Cannot register the panel shell: there is "
+ "already one running.\n");
+ break;
+ default:
+ g_warning ("Cannot register the panel shell: unhandled "
+ "reply %u from RequestName", request_name_reply);
+ }
+
+register_out:
+
+ if (!retval) {
+ panel_session_do_not_restart ();
+ panel_shell_cleanup (NULL);
+ }
+
+ return retval;
+}
+
+void
+panel_shell_quit (void)
+{
+ GSList *toplevels_to_destroy, *l;
+
+ toplevels_to_destroy = g_slist_copy (panel_toplevel_list_toplevels ());
+ for (l = toplevels_to_destroy; l; l = l->next)
+ gtk_widget_destroy (l->data);
+ g_slist_free (toplevels_to_destroy);
+
+ gtk_main_quit ();
+}