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/*
 *  Copyright (C) 2000 Helix Code Inc.
 *
 *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _FILTER_ELEMENT_H
#define _FILTER_ELEMENT_H

#include <gtk/gtk.h>
#include <gnome-xml/parser.h>

#define FILTER_ELEMENT(obj) GTK_CHECK_CAST (obj, filter_element_get_type (), FilterElement)
#define FILTER_ELEMENT_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, filter_element_get_type (), FilterElementClass)
#define IS_FILTER_ELEMENT(obj)      GTK_CHECK_TYPE (obj, filter_element_get_type ())

typedef struct _FilterElement   FilterElement;
typedef struct _FilterElementClass  FilterElementClass;

struct _FilterElement {
    GtkObject parent;
    struct _FilterElementPrivate *priv;

    char *name;
};

struct _FilterPart;

struct _FilterElementClass {
    GtkObjectClass parent_class;

    /* virtual methods */
    void (*xml_create)(FilterElement *, xmlNodePtr);
    xmlNodePtr (*xml_encode)(FilterElement *);
    int (*xml_decode)(FilterElement *, xmlNodePtr);

    FilterElement *(*clone)(FilterElement *fe);

    GtkWidget *(*get_widget)(FilterElement *);
    void (*build_code)(FilterElement *, GString *, struct _FilterPart *ff);
    void (*format_sexp)(FilterElement *, GString *);

    /* signals */
};

guint       filter_element_get_type (void);
FilterElement   *filter_element_new (void);

FilterElement   *filter_element_new_type_name   (const char *type);

/* methods */
void        filter_element_xml_create   (FilterElement *fe, xmlNodePtr node);

xmlNodePtr  filter_element_xml_encode   (FilterElement *fe);
int     filter_element_xml_decode   (FilterElement *fe, xmlNodePtr node);
FilterElement   *filter_element_clone       (FilterElement *fe);

GtkWidget   *filter_element_get_widget  (FilterElement *fe);
void        filter_element_build_code   (FilterElement *fe, GString *out, struct _FilterPart *ff);
void        filter_element_format_sexp  (FilterElement *fe, GString *out);

#endif /* ! _FILTER_ELEMENT_H */