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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-simple-data-wrapper.c: a simple stream-backed data wrapper */
/*
* Author:
* Dan Winship <danw@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
*
* 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 <config.h>
#include "camel-simple-data-wrapper.h"
#include "camel-exception.h"
#include <errno.h>
static CamelDataWrapperClass *parent_class = NULL;
/* Returns the class for a CamelDataWrapper */
#define CDW_CLASS(so) CAMEL_DATA_WRAPPER_CLASS (GTK_OBJECT (so)->klass)
static int construct_from_stream (CamelDataWrapper *, CamelStream *);
static int write_to_stream (CamelDataWrapper *data_wrapper,
CamelStream *stream);
static void finalize (GtkObject *object);
static void
camel_simple_data_wrapper_class_init (CamelSimpleDataWrapperClass *camel_simple_data_wrapper_class)
{
GtkObjectClass *gtk_object_class =
GTK_OBJECT_CLASS (camel_simple_data_wrapper_class);
CamelDataWrapperClass *camel_data_wrapper_class =
CAMEL_DATA_WRAPPER_CLASS (camel_simple_data_wrapper_class);
parent_class = gtk_type_class (camel_data_wrapper_get_type ());
/* virtual method overload */
camel_data_wrapper_class->write_to_stream = write_to_stream;
camel_data_wrapper_class->construct_from_stream =
construct_from_stream;
gtk_object_class->finalize = finalize;
}
GtkType
camel_simple_data_wrapper_get_type (void)
{
static GtkType camel_simple_data_wrapper_type = 0;
if (!camel_simple_data_wrapper_type) {
GtkTypeInfo camel_simple_data_wrapper_info =
{
"CamelSimpleDataWrapper",
sizeof (CamelSimpleDataWrapper),
sizeof (CamelSimpleDataWrapperClass),
(GtkClassInitFunc) camel_simple_data_wrapper_class_init,
(GtkObjectInitFunc) NULL,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
camel_simple_data_wrapper_type = gtk_type_unique (camel_data_wrapper_get_type (), &camel_simple_data_wrapper_info);
}
return camel_simple_data_wrapper_type;
}
static void
finalize (GtkObject *object)
{
CamelSimpleDataWrapper *simple_data_wrapper =
CAMEL_SIMPLE_DATA_WRAPPER (object);
if (simple_data_wrapper->content)
gtk_object_unref (GTK_OBJECT (simple_data_wrapper->content));
GTK_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* camel_simple_data_wrapper_new:
*
* Create a new camel data wrapper object.
*
* Return value:
**/
CamelDataWrapper *
camel_simple_data_wrapper_new (void)
{
return gtk_type_new (camel_simple_data_wrapper_get_type ());
}
static int
construct_from_stream (CamelDataWrapper *wrapper, CamelStream *stream)
{
CamelSimpleDataWrapper *simple_data_wrapper =
CAMEL_SIMPLE_DATA_WRAPPER (wrapper);
if (simple_data_wrapper->content)
gtk_object_unref((GtkObject *)simple_data_wrapper->content);
simple_data_wrapper->content = stream;
gtk_object_ref (GTK_OBJECT (stream));
return 0;
}
static int
write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
CamelSimpleDataWrapper *simple_data_wrapper =
CAMEL_SIMPLE_DATA_WRAPPER (data_wrapper);
if (simple_data_wrapper->content == NULL)
return -1;
if (camel_stream_reset (simple_data_wrapper->content) == -1)
return -1;
return camel_stream_write_to_stream (simple_data_wrapper->content, stream);
}
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