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/*
 *  Copyright (C) 2000 Ximian 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 version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 */

#ifndef _FILTER_RULE_H
#define _FILTER_RULE_H

#include <gtk/gtkobject.h>
#include "filter-part.h"

#define FILTER_RULE(obj)    GTK_CHECK_CAST (obj, filter_rule_get_type (), FilterRule)
#define FILTER_RULE_CLASS(klass)    GTK_CHECK_CLASS_CAST (klass, filter_rule_get_type (), FilterRuleClass)
#define IS_FILTER_RULE(obj)      GTK_CHECK_TYPE (obj, filter_rule_get_type ())

typedef struct _FilterRule  FilterRule;
typedef struct _FilterRuleClass FilterRuleClass;

struct _RuleContext;

enum _filter_grouping_t {
    FILTER_GROUP_ALL,   /* all rules must match */
    FILTER_GROUP_ANY    /* any rule must match */
};


#define FILTER_SOURCE_INCOMING "incoming" /* performed on incoming email */
#define FILTER_SOURCE_DEMAND   "demand"   /* performed on the selected folder
                       * when the user asks for it */
#define FILTER_SOURCE_OUTGOING  "outgoing"/* performed on outgoing mail */

struct _FilterRule {
    GtkObject parent;
    struct _FilterRulePrivate *priv;
    
    char *name;
    char *source;
    
    enum _filter_grouping_t grouping;
    GList *parts;
};

struct _FilterRuleClass {
    GtkObjectClass parent_class;
    
    /* virtual methods */
    int (*validate)(FilterRule *);
    int (*eq)(FilterRule *fr, FilterRule *cm);

    xmlNodePtr (*xml_encode)(FilterRule *);
    int (*xml_decode)(FilterRule *, xmlNodePtr, struct _RuleContext *);
    
    void (*build_code)(FilterRule *, GString *out);

    void (*copy)(FilterRule *dest, FilterRule *src);
    
    GtkWidget *(*get_widget)(FilterRule *fr, struct _RuleContext *f);
    
    /* signals */
    void (*changed)(FilterRule *fr);
};

guint       filter_rule_get_type    (void);
FilterRule  *filter_rule_new    (void);

FilterRule  *filter_rule_clone  (FilterRule *base);

/* methods */
void        filter_rule_set_name    (FilterRule *fr, const char *name);
void        filter_rule_set_source  (FilterRule *fr, const char *source);

int     filter_rule_validate    (FilterRule *fr);
int     filter_rule_eq      (FilterRule *fr, FilterRule *cm);

xmlNodePtr  filter_rule_xml_encode  (FilterRule *fr);
int     filter_rule_xml_decode  (FilterRule *fr, xmlNodePtr node, struct _RuleContext *f);

void            filter_rule_copy        (FilterRule *dest, FilterRule *src);

void        filter_rule_add_part    (FilterRule *fr, FilterPart *fp);
void        filter_rule_remove_part (FilterRule *fr, FilterPart *fp);
void        filter_rule_replace_part(FilterRule *fr, FilterPart *fp, FilterPart *new);

GtkWidget   *filter_rule_get_widget (FilterRule *fr, struct _RuleContext *f);

void        filter_rule_build_code  (FilterRule *fr, GString *out);
/*
void        filter_rule_build_action(FilterRule *fr, GString *out);
*/

void        filter_rule_emit_changed    (FilterRule *fr);

/* static functions */
FilterRule  *filter_rule_next_list      (GList *l, FilterRule *last, const char *source);
FilterRule  *filter_rule_find_list      (GList *l, const char *name, const char *source);


#endif /* ! _FILTER_RULE_H */