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/*
 * This program 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) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Not Zed <notzed@lostzed.mmc.com.au>
 *      Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifndef _FILTER_ELEMENT_H
#define _FILTER_ELEMENT_H

#include <gtk/gtk.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>

#define FILTER_TYPE_ELEMENT            (filter_element_get_type ())
#define FILTER_ELEMENT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), FILTER_TYPE_ELEMENT, FilterElement))
#define FILTER_ELEMENT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), FILTER_TYPE_ELEMENT, FilterElementClass))
#define IS_FILTER_ELEMENT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), FILTER_TYPE_ELEMENT))
#define IS_FILTER_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), FILTER_TYPE_ELEMENT))
#define FILTER_ELEMENT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), FILTER_TYPE_ELEMENT, FilterElementClass))

typedef struct _FilterElement FilterElement;
typedef struct _FilterElementClass FilterElementClass;

typedef FilterElement *(*FilterElementFunc)(gpointer data);

struct _FilterElement {
    GObject parent_object;

    gchar *name;
    gpointer data;
};

struct _FilterPart;

struct _FilterElementClass {
    GObjectClass parent_class;

    /* virtual methods */
    gboolean (*validate) (FilterElement *fe);
    gint (*eq) (FilterElement *fe, FilterElement *cm);

    void (*xml_create) (FilterElement *, xmlNodePtr);
    xmlNodePtr (*xml_encode) (FilterElement *);
    gint (*xml_decode) (FilterElement *, xmlNodePtr);

    FilterElement *(*clone) (FilterElement *fe);
    void (*copy_value)(FilterElement *fe, FilterElement *se);

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

    /* signals */
};

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

void            filter_element_set_data (FilterElement *fe, gpointer data);

/* methods */
gboolean        filter_element_validate         (FilterElement *fe);
int     filter_element_eq       (FilterElement *fe, FilterElement *cm);

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);
void        filter_element_copy_value   (FilterElement *de, FilterElement *se);

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 */