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/* mg-xml-storage.c
*
* Copyright (C) 2003 Vivien Malerba
*
* 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
*/
#include "mg-xml-storage.h"
#include "marshal.h"
/* signals */
enum
{
LAST_SIGNAL
};
static gint mg_xml_storage_signals[LAST_SIGNAL] = { };
static void mg_xml_storage_iface_init (gpointer g_class);
GType
mg_xml_storage_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof (MgXmlStorageIface),
(GBaseInitFunc) mg_xml_storage_iface_init,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) NULL,
NULL,
NULL,
0,
0,
(GInstanceInitFunc) NULL
};
type = g_type_register_static (G_TYPE_INTERFACE, "MgXmlStorage", &info, 0);
g_type_interface_add_prerequisite (type, G_TYPE_OBJECT);
}
return type;
}
static void
mg_xml_storage_iface_init (gpointer g_class)
{
static gboolean initialized = FALSE;
if (! initialized) {
initialized = TRUE;
}
}
/**
* mg_xml_storage_get_xml_id
* @iface: an object which implements the #MgXmlStorage interface
*
* Fetch the xml id string of the object, it's up to the caller to
* free the string.
*
* Returns: the xml id.
*/
gchar *
mg_xml_storage_get_xml_id (MgXmlStorage *iface)
{
g_return_val_if_fail (iface && IS_MG_XML_STORAGE (iface), NULL);
if (MG_XML_STORAGE_GET_IFACE (iface)->get_xml_id)
return (MG_XML_STORAGE_GET_IFACE (iface)->get_xml_id) (iface);
return NULL;
}
/**
* mg_xml_storage_save_to_xml
* @iface: an object which implements the #MgXmlStorage interface
* @error: location to store error, or %NULL
*
* Creates a new xmlNodePtr structure and fills it with data representing the
* object given as argument.
*
* Returns: the new XML node, or NULL if an error occurred.
*/
xmlNodePtr
mg_xml_storage_save_to_xml (MgXmlStorage *iface, GError **error)
{
g_return_val_if_fail (iface && IS_MG_XML_STORAGE (iface), NULL);
if (MG_XML_STORAGE_GET_IFACE (iface)->save_to_xml)
return (MG_XML_STORAGE_GET_IFACE (iface)->save_to_xml) (iface, error);
return NULL;
}
/**
* mg_xml_storage_load_from_xml
* @iface: an object which implements the #MgXmlStorage interface
* @node: an XML node from an XML structure
* @error: location to store error, or %NULL
*
* Updates the object with data stored in the XML node. The object MUST already
* exist and be of the correct type before calling this function.
* This is a virtual function.
*
* Returns: TRUE if no error occurred.
*/
gboolean
mg_xml_storage_load_from_xml (MgXmlStorage *iface, xmlNodePtr node, GError **error)
{
g_return_val_if_fail (iface && IS_MG_XML_STORAGE (iface), FALSE);
if (MG_XML_STORAGE_GET_IFACE (iface)->load_from_xml)
return (MG_XML_STORAGE_GET_IFACE (iface)->load_from_xml) (iface, node, error);
return TRUE;
}
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