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cfb30b2d722edda40e6c7777df951536f04c986c
gtk3/gtk/gtkobject.c
Owen Taylor 4e32ede287 Remove G_DISABLE_CONST_RETURNS. 
Tue Oct 23 11:53:00 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/Makefile.am (INCLUDES): Remove G_DISABLE_CONST_RETURNS.

	* gtk/gtkfontsel.[ch]: Make gtk_font_selection_get_font()
	G_CONST_RETURN. (Murray Cumming)

	* gtk/gtkfontsel.c (gtk_font_selection_dialog_get_preview_text):
	Make G_CONST_RETURN.

	* gtk/gtkfilesel.c (open_user_dir): Fix bug with freeing
	results of g_get_home_dir().

	* gtk/gtkfilesel.c: Make filesel->fileop_file a duplicated
	copy. Storing the return from gtk_entry_get_text() is evil.

	* gtk/gtkcombo.c gtk/gtkcellrenderertext.c gtk/gtkbindings.c
	gtk/gtkfilesel.c gtk/gtkfontsel.c gtk/gtkimmodule.c
	gtk/gtkobject.c gtk/gtkoldeditable.c gtk/gtktreedatalist.c
	gtk/gtksignal.c: Add const.

	* gdk/x11/gdkkeys-x11.c (get_direction): Add missing const.

	* gtk/gtktreeview.c: Namespace object data keys to be safe, even
	if we are setting them on private widgets.

	* gtk/gtktreeview.c (gtk_tree_view_real_start_interactive_search):
	Duplicate entry->text before setting it as object data.
2001-10-23 16:02:23 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include "gtkobject.h"
#include "gtksignal.h"
enum {
DESTROY,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_USER_DATA,
};
extern void gtk_object_init_type (void); /* for gtktypeutils.h */
static void gtk_object_base_class_init (GtkObjectClass *class);
static void gtk_object_base_class_finalize (GtkObjectClass *class);
static void gtk_object_class_init (GtkObjectClass *klass);
static void gtk_object_init (GtkObject *object,
GtkObjectClass *klass);
static void gtk_object_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_object_dispose (GObject *object);
static void gtk_object_real_destroy (GtkObject *object);
static void gtk_object_finalize (GObject *object);
static void gtk_object_notify_weaks (GtkObject *object);
static gpointer parent_class = NULL;
static guint object_signals[LAST_SIGNAL] = { 0 };
static GQuark quark_user_data = 0;
static GQuark quark_weakrefs = 0;
/****************************************************
* GtkObject type, class and instance initialization
*
****************************************************/
GtkType
gtk_object_get_type (void)
{
static GtkType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GtkObjectClass),
(GBaseInitFunc) gtk_object_base_class_init,
(GBaseFinalizeFunc) gtk_object_base_class_finalize,
(GClassInitFunc) gtk_object_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkObject),
16, /* n_preallocs */
(GInstanceInitFunc) gtk_object_init,
};
object_type = g_type_register_static (G_TYPE_OBJECT, "GtkObject", &object_info, 0);
}
return object_type;
}
static void
gtk_object_base_class_init (GtkObjectClass *class)
{
/* reset instance specifc methods that don't get inherited */
class->get_arg = NULL;
class->set_arg = NULL;
}
static void
gtk_object_base_class_finalize (GtkObjectClass *class)
{
}
static inline gboolean
gtk_arg_set_from_value (GtkArg *arg,
const GValue *value,
gboolean copy_string)
{
switch (G_TYPE_FUNDAMENTAL (arg->type))
{
case G_TYPE_CHAR: GTK_VALUE_CHAR (*arg) = g_value_get_char (value); break;
case G_TYPE_UCHAR: GTK_VALUE_UCHAR (*arg) = g_value_get_uchar (value); break;
case G_TYPE_BOOLEAN: GTK_VALUE_BOOL (*arg) = g_value_get_boolean (value); break;
case G_TYPE_INT: GTK_VALUE_INT (*arg) = g_value_get_int (value); break;
case G_TYPE_UINT: GTK_VALUE_UINT (*arg) = g_value_get_uint (value); break;
case G_TYPE_LONG: GTK_VALUE_LONG (*arg) = g_value_get_long (value); break;
case G_TYPE_ULONG: GTK_VALUE_ULONG (*arg) = g_value_get_ulong (value); break;
case G_TYPE_ENUM: GTK_VALUE_ENUM (*arg) = g_value_get_enum (value); break;
case G_TYPE_FLAGS: GTK_VALUE_FLAGS (*arg) = g_value_get_flags (value); break;
case G_TYPE_FLOAT: GTK_VALUE_FLOAT (*arg) = g_value_get_float (value); break;
case G_TYPE_DOUBLE: GTK_VALUE_DOUBLE (*arg) = g_value_get_double (value); break;
case G_TYPE_BOXED: GTK_VALUE_BOXED (*arg) = g_value_get_boxed (value); break;
case G_TYPE_POINTER: GTK_VALUE_POINTER (*arg) = g_value_get_pointer (value); break;
case G_TYPE_OBJECT: GTK_VALUE_POINTER (*arg) = g_value_get_object (value); break;
case G_TYPE_STRING: if (copy_string)
GTK_VALUE_STRING (*arg) = g_value_dup_string (value);
else
GTK_VALUE_STRING (*arg) = (char *) g_value_get_string (value);
break;
default:
return FALSE;
}
return TRUE;
}
static inline gboolean
gtk_arg_to_value (GtkArg *arg,
GValue *value)
{
switch (G_TYPE_FUNDAMENTAL (arg->type))
{
case G_TYPE_CHAR: g_value_set_char (value, GTK_VALUE_CHAR (*arg)); break;
case G_TYPE_UCHAR: g_value_set_uchar (value, GTK_VALUE_UCHAR (*arg)); break;
case G_TYPE_BOOLEAN: g_value_set_boolean (value, GTK_VALUE_BOOL (*arg)); break;
case G_TYPE_INT: g_value_set_int (value, GTK_VALUE_INT (*arg)); break;
case G_TYPE_UINT: g_value_set_uint (value, GTK_VALUE_UINT (*arg)); break;
case G_TYPE_LONG: g_value_set_long (value, GTK_VALUE_LONG (*arg)); break;
case G_TYPE_ULONG: g_value_set_ulong (value, GTK_VALUE_ULONG (*arg)); break;
case G_TYPE_ENUM: g_value_set_enum (value, GTK_VALUE_ENUM (*arg)); break;
case G_TYPE_FLAGS: g_value_set_flags (value, GTK_VALUE_FLAGS (*arg)); break;
case G_TYPE_FLOAT: g_value_set_float (value, GTK_VALUE_FLOAT (*arg)); break;
case G_TYPE_DOUBLE: g_value_set_double (value, GTK_VALUE_DOUBLE (*arg)); break;
case G_TYPE_STRING: g_value_set_string (value, GTK_VALUE_STRING (*arg)); break;
case G_TYPE_BOXED: g_value_set_boxed (value, GTK_VALUE_BOXED (*arg)); break;
case G_TYPE_POINTER: g_value_set_pointer (value, GTK_VALUE_POINTER (*arg)); break;
case G_TYPE_OBJECT: g_value_set_object (value, GTK_VALUE_POINTER (*arg)); break;
default:
return FALSE;
}
return TRUE;
}
static void
gtk_arg_proxy_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkObjectClass *class = g_type_class_peek (pspec->owner_type);
GtkArg arg;
g_return_if_fail (class->set_arg != NULL);
memset (&arg, 0, sizeof (arg));
arg.type = G_VALUE_TYPE (value);
gtk_arg_set_from_value (&arg, value, FALSE);
arg.name = pspec->name;
class->set_arg (GTK_OBJECT (object), &arg, property_id);
}
static void
gtk_arg_proxy_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkObjectClass *class = g_type_class_peek (pspec->owner_type);
GtkArg arg;
g_return_if_fail (class->get_arg != NULL);
memset (&arg, 0, sizeof (arg));
arg.type = G_VALUE_TYPE (value);
arg.name = pspec->name;
class->get_arg (GTK_OBJECT (object), &arg, property_id);
gtk_arg_to_value (&arg, value);
}
void
gtk_object_add_arg_type (const gchar *arg_name,
GtkType arg_type,
guint arg_flags,
guint arg_id)
{
GObjectClass *oclass;
GParamSpec *pspec;
gchar *type_name, *pname;
GType type;
g_return_if_fail (arg_name != NULL);
g_return_if_fail (arg_type > G_TYPE_NONE);
g_return_if_fail (arg_id > 0);
g_return_if_fail (arg_flags & GTK_ARG_READWRITE);
if (arg_flags & G_PARAM_CONSTRUCT)
g_return_if_fail ((arg_flags & G_PARAM_CONSTRUCT_ONLY) == 0);
if (arg_flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
g_return_if_fail (arg_flags & G_PARAM_WRITABLE);
g_return_if_fail ((arg_flags & ~(GTK_ARG_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
pname = strchr (arg_name, ':');
g_return_if_fail (pname && pname[1] == ':');
type_name = g_strndup (arg_name, pname - arg_name);
pname += 2;
type = g_type_from_name (type_name);
g_free (type_name);
g_return_if_fail (G_TYPE_IS_OBJECT (type));
oclass = gtk_type_class (type);
if (arg_flags & GTK_ARG_READABLE)
{
if (oclass->get_property && oclass->get_property != gtk_arg_proxy_get_property)
{
g_warning (G_STRLOC ": GtkArg compatibility code can't be mixed with customized %s.get_property() implementation",
g_type_name (type));
return;
}
oclass->get_property = gtk_arg_proxy_get_property;
}
if (arg_flags & GTK_ARG_WRITABLE)
{
if (oclass->set_property && oclass->set_property != gtk_arg_proxy_set_property)
{
g_warning (G_STRLOC ": GtkArg compatibility code can't be mixed with customized %s.set_property() implementation",
g_type_name (type));
return;
}
oclass->set_property = gtk_arg_proxy_set_property;
}
switch (G_TYPE_FUNDAMENTAL (arg_type))
{
case G_TYPE_ENUM:
pspec = g_param_spec_enum (pname, NULL, NULL, arg_type, 0, arg_flags);
break;
case G_TYPE_FLAGS:
pspec = g_param_spec_flags (pname, NULL, NULL, arg_type, 0, arg_flags);
break;
case G_TYPE_CHAR:
pspec = g_param_spec_char (pname, NULL, NULL, -128, 127, 0, arg_flags);
break;
case G_TYPE_UCHAR:
pspec = g_param_spec_uchar (pname, NULL, NULL, 0, 255, 0, arg_flags);
break;
case G_TYPE_BOOLEAN:
pspec = g_param_spec_boolean (pname, NULL, NULL, FALSE, arg_flags);
break;
case G_TYPE_INT:
pspec = g_param_spec_int (pname, NULL, NULL, -2147483647, 2147483647, 0, arg_flags);
break;
case G_TYPE_UINT:
pspec = g_param_spec_uint (pname, NULL, NULL, 0, 4294967295U, 0, arg_flags);
break;
case G_TYPE_FLOAT:
pspec = g_param_spec_float (pname, NULL, NULL, -1E+37, 1E+37, 0, arg_flags);
break;
case G_TYPE_DOUBLE:
pspec = g_param_spec_double (pname, NULL, NULL, -1E+307, 1E+307, 0, arg_flags);
break;
case G_TYPE_STRING:
pspec = g_param_spec_string (pname, NULL, NULL, NULL, arg_flags);
break;
case G_TYPE_POINTER:
pspec = g_param_spec_pointer (pname, NULL, NULL, arg_flags);
break;
case G_TYPE_OBJECT:
pspec = g_param_spec_object (pname, NULL, NULL, arg_type, arg_flags);
break;
case G_TYPE_BOXED:
if (!G_TYPE_IS_FUNDAMENTAL (arg_type))
{
pspec = g_param_spec_boxed (pname, NULL, NULL, arg_type, arg_flags);
break;
}
default:
g_warning (G_STRLOC ": Property type `%s' is not supported by the GtkArg compatibility code",
g_type_name (arg_type));
return;
}
g_object_class_install_property (oclass, arg_id, pspec);
}
static void
gtk_object_class_init (GtkObjectClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
parent_class = g_type_class_ref (G_TYPE_OBJECT);
gobject_class->set_property = gtk_object_set_property;
gobject_class->get_property = gtk_object_get_property;
gobject_class->dispose = gtk_object_dispose;
gobject_class->finalize = gtk_object_finalize;
class->destroy = gtk_object_real_destroy;
g_object_class_install_property (gobject_class,
PROP_USER_DATA,
g_param_spec_pointer ("user_data", "User Data",
"Anonymous User Data Pointer",
G_PARAM_READABLE | G_PARAM_WRITABLE));
object_signals[DESTROY] =
gtk_signal_new ("destroy",
G_SIGNAL_RUN_CLEANUP | G_SIGNAL_NO_RECURSE | GTK_RUN_NO_HOOKS,
GTK_CLASS_TYPE (class),
GTK_SIGNAL_OFFSET (GtkObjectClass, destroy),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
}
static void
gtk_object_init (GtkObject *object,
GtkObjectClass *klass)
{
GTK_OBJECT_FLAGS (object) = GTK_FLOATING;
}
/********************************************
* Functions to end a GtkObject's life time
*
********************************************/
void
gtk_object_destroy (GtkObject *object)
{
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_OBJECT (object));
if (!GTK_OBJECT_DESTROYED (object))
g_object_run_dispose (G_OBJECT (object));
}
static void
gtk_object_dispose (GObject *gobject)
{
GtkObject *object = GTK_OBJECT (gobject);
/* guard against reinvocations during
* destruction with the GTK_DESTROYED flag.
*/
if (!GTK_OBJECT_DESTROYED (object))
{
GTK_OBJECT_SET_FLAGS (object, GTK_DESTROYED);
gtk_signal_emit (object, object_signals[DESTROY]);
GTK_OBJECT_UNSET_FLAGS (object, GTK_DESTROYED);
}
G_OBJECT_CLASS (parent_class)->dispose (gobject);
}
static void
gtk_object_real_destroy (GtkObject *object)
{
g_signal_handlers_destroy (G_OBJECT (object));
}
static void
gtk_object_finalize (GObject *gobject)
{
GtkObject *object = GTK_OBJECT (gobject);
gtk_object_notify_weaks (object);
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
/*****************************************
* GtkObject argument handlers
*
*****************************************/
static void
gtk_object_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_USER_DATA:
gtk_object_set_user_data (GTK_OBJECT (object), g_value_get_pointer (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_USER_DATA:
g_value_set_pointer (value, gtk_object_get_user_data (GTK_OBJECT (object)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/*****************************************
* gtk_object_sink:
*
* arguments:
*
* results:
*****************************************/
void
gtk_object_sink (GtkObject *object)
{
g_return_if_fail (GTK_IS_OBJECT (object));
if (GTK_OBJECT_FLOATING (object))
{
GTK_OBJECT_UNSET_FLAGS (object, GTK_FLOATING);
gtk_object_unref (object);
}
}
/*****************************************
* Weak references.
*
* Weak refs are very similar to the old "destroy" signal. They allow
* one to register a callback that is called when the weakly
* referenced object is finalized.
*
* They are not implemented as a signal because they really are
* special and need to be used with great care. Unlike signals, which
* should be able to execute any code whatsoever.
*
* A weakref callback is not allowed to retain a reference to the
* object. Object data keys may be retrieved in a weak reference
* callback.
*
* A weakref callback is called at most once.
*
*****************************************/
typedef struct _GtkWeakRef GtkWeakRef;
struct _GtkWeakRef
{
GtkWeakRef *next;
GtkDestroyNotify notify;
gpointer data;
};
void
gtk_object_weakref (GtkObject *object,
GtkDestroyNotify notify,
gpointer data)
{
GtkWeakRef *weak;
g_return_if_fail (notify != NULL);
g_return_if_fail (GTK_IS_OBJECT (object));
if (!quark_weakrefs)
quark_weakrefs = g_quark_from_static_string ("gtk-weakrefs");
weak = g_new (GtkWeakRef, 1);
weak->next = gtk_object_get_data_by_id (object, quark_weakrefs);
weak->notify = notify;
weak->data = data;
gtk_object_set_data_by_id (object, quark_weakrefs, weak);
}
void
gtk_object_weakunref (GtkObject *object,
GtkDestroyNotify notify,
gpointer data)
{
GtkWeakRef *weaks, *w, **wp;
g_return_if_fail (GTK_IS_OBJECT (object));
if (!quark_weakrefs)
return;
weaks = gtk_object_get_data_by_id (object, quark_weakrefs);
for (wp = &weaks; *wp; wp = &(*wp)->next)
{
w = *wp;
if (w->notify == notify && w->data == data)
{
if (w == weaks)
gtk_object_set_data_by_id (object, quark_weakrefs, w->next);
else
*wp = w->next;
g_free (w);
return;
}
}
}
static void
gtk_object_notify_weaks (GtkObject *object)
{
if (quark_weakrefs)
{
GtkWeakRef *w1, *w2;
w1 = gtk_object_get_data_by_id (object, quark_weakrefs);
while (w1)
{
w1->notify (w1->data);
w2 = w1->next;
g_free (w1);
w1 = w2;
}
}
}
GtkObject*
gtk_object_new (GtkType object_type,
const gchar *first_property_name,
...)
{
GtkObject *object;
va_list var_args;
g_return_val_if_fail (GTK_TYPE_IS_OBJECT (object_type), NULL);
va_start (var_args, first_property_name);
object = (GtkObject *)g_object_new_valist (object_type, first_property_name, var_args);
va_end (var_args);
return object;
}
void
gtk_object_get (GtkObject *object,
const gchar *first_property_name,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_OBJECT (object));
va_start (var_args, first_property_name);
g_object_get_valist (G_OBJECT (object), first_property_name, var_args);
va_end (var_args);
}
void
gtk_object_set (GtkObject *object,
const gchar *first_property_name,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_OBJECT (object));
va_start (var_args, first_property_name);
g_object_set_valist (G_OBJECT (object), first_property_name, var_args);
va_end (var_args);
}
/*****************************************
* GtkObject object_data mechanism
*
*****************************************/
void
gtk_object_set_data_by_id (GtkObject *object,
GQuark data_id,
gpointer data)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_datalist_id_set_data (&G_OBJECT (object)->qdata, data_id, data);
}
void
gtk_object_set_data (GtkObject *object,
const gchar *key,
gpointer data)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_return_if_fail (key != NULL);
g_datalist_set_data (&G_OBJECT (object)->qdata, key, data);
}
void
gtk_object_set_data_by_id_full (GtkObject *object,
GQuark data_id,
gpointer data,
GtkDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_datalist_id_set_data_full (&G_OBJECT (object)->qdata, data_id, data, destroy);
}
void
gtk_object_set_data_full (GtkObject *object,
const gchar *key,
gpointer data,
GtkDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_return_if_fail (key != NULL);
g_datalist_set_data_full (&G_OBJECT (object)->qdata, key, data, destroy);
}
gpointer
gtk_object_get_data_by_id (GtkObject *object,
GQuark data_id)
{
g_return_val_if_fail (GTK_IS_OBJECT (object), NULL);
return g_datalist_id_get_data (&G_OBJECT (object)->qdata, data_id);
}
gpointer
gtk_object_get_data (GtkObject *object,
const gchar *key)
{
g_return_val_if_fail (GTK_IS_OBJECT (object), NULL);
g_return_val_if_fail (key != NULL, NULL);
return g_datalist_get_data (&G_OBJECT (object)->qdata, key);
}
void
gtk_object_remove_data_by_id (GtkObject *object,
GQuark data_id)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_datalist_id_remove_data (&G_OBJECT (object)->qdata, data_id);
}
void
gtk_object_remove_data (GtkObject *object,
const gchar *key)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_return_if_fail (key != NULL);
g_datalist_remove_data (&G_OBJECT (object)->qdata, key);
}
void
gtk_object_remove_no_notify_by_id (GtkObject *object,
GQuark key_id)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_datalist_id_remove_no_notify (&G_OBJECT (object)->qdata, key_id);
}
void
gtk_object_remove_no_notify (GtkObject *object,
const gchar *key)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_return_if_fail (key != NULL);
g_datalist_remove_no_notify (&G_OBJECT (object)->qdata, key);
}
void
gtk_object_set_user_data (GtkObject *object,
gpointer data)
{
g_return_if_fail (GTK_IS_OBJECT (object));
if (!quark_user_data)
quark_user_data = g_quark_from_static_string ("user_data");
g_datalist_id_set_data (&G_OBJECT (object)->qdata, quark_user_data, data);
}
gpointer
gtk_object_get_user_data (GtkObject *object)
{
g_return_val_if_fail (GTK_IS_OBJECT (object), NULL);
return g_datalist_id_get_data (&G_OBJECT (object)->qdata, quark_user_data);
}
GtkObject*
gtk_object_ref (GtkObject *object)
{
g_return_val_if_fail (GTK_IS_OBJECT (object), NULL);
return (GtkObject*) g_object_ref ((GObject*) object);
}
void
gtk_object_unref (GtkObject *object)
{
g_return_if_fail (GTK_IS_OBJECT (object));
g_object_unref ((GObject*) object);
}
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