/* GObject - GLib Type, Object, Parameter and Signal Library

  * Copyright (C) 2006 Imendio AB

  * Portions copyright (c) 2009 Nokia Corporation.  All rights reserved.

  * This library is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public

  * License as published by the Free Software Foundation; either

  * version 2 of the License, or (at your option) any later version.

  *

  * This library 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

  * Lesser General Public License for more details.

  *

  * You should have received a copy of the GNU Lesser General

  * Public License along with this library; if not, write to the

  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,

  * Boston, MA 02111-1307, USA.

  */

 #undef  G_LOG_DOMAIN

 #define G_LOG_DOMAIN "TestSingleton"

 #include <glib-object.h>

 #include <string.h>

 #ifdef __SYMBIAN32__

 #include "mrt2_glib2_test.h"

 #endif //__SYMBIAN32__

 /* --- MySingleton class --- */

 typedef struct {

   GObject parent_instance;

 } MySingleton;

 typedef struct {

   GObjectClass parent_class;

 } MySingletonClass;

 #define MY_TYPE_SINGLETON         (my_singleton_get_type ())

 #define MY_SINGLETON(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), MY_TYPE_SINGLETON, MySingleton))

 #define MY_IS_SINGLETON(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), MY_TYPE_SINGLETON))

 #define MY_SINGLETON_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST ((c), MY_TYPE_SINGLETON, MySingletonClass))

 #define MY_IS_SINGLETON_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE ((c), MY_TYPE_SINGLETON))

 #define MY_SINGLETON_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), MY_TYPE_SINGLETON, MySingletonClass))

 G_DEFINE_TYPE (MySingleton, my_singleton, G_TYPE_OBJECT);

 static MySingleton *the_one_and_only = NULL;

 /* --- methods --- */

 static GObject*

 my_singleton_constructor (GType                  type,

                           guint                  n_construct_properties,

                           GObjectConstructParam *construct_properties)

 {

   if (the_one_and_only)

     return g_object_ref (the_one_and_only);

   else

     return G_OBJECT_CLASS (my_singleton_parent_class)->constructor (type, n_construct_properties, construct_properties);

 }

 static void

 my_singleton_init (MySingleton *self)

 {

   g_assert (the_one_and_only == NULL);

   the_one_and_only = self;

 }

 static void

 my_singleton_class_init (MySingletonClass *klass)

 {

   G_OBJECT_CLASS (klass)->constructor = my_singleton_constructor;

 }

 /* --- test program --- */

 int

 main (int   argc,

       char *argv[])

 {

   MySingleton *singleton, *obj;

     #ifdef __SYMBIAN32__

   g_log_set_handler (NULL,  G_LOG_FLAG_FATAL| G_LOG_FLAG_RECURSION | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE | G_LOG_LEVEL_INFO | G_LOG_LEVEL_DEBUG, &mrtLogHandler, NULL);

   g_set_print_handler(mrtPrintHandler);

   #endif /*__SYMBIAN32__*/

   g_type_init_with_debug_flags (G_TYPE_DEBUG_OBJECTS | G_TYPE_DEBUG_SIGNALS);

   /* create the singleton */

   singleton = g_object_new (MY_TYPE_SINGLETON, NULL);

   g_assert (singleton != NULL);

   /* assert _singleton_ creation */

   obj = g_object_new (MY_TYPE_SINGLETON, NULL);

   g_assert (singleton == obj);

   g_object_unref (obj);

   /* shutdown */

   g_object_unref (singleton);

       #ifdef __SYMBIAN32__

   testResultXml("singleton");

   #endif //__SYMBIAN32__

   return 0;

 }