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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.
 *
 * 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 Lesser General Public License
 * along with this 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)
 *
 */

#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
#error "Only <e-util/e-util.h> should be included directly."
#endif

#ifndef E_RULE_CONTEXT_H
#define E_RULE_CONTEXT_H

#include <libxml/parser.h>

#include <e-util/e-filter-part.h>
#include <e-util/e-filter-rule.h>

/* Standard GObject macros */
#define E_TYPE_RULE_CONTEXT \
    (e_rule_context_get_type ())
#define E_RULE_CONTEXT(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_RULE_CONTEXT, ERuleContext))
#define E_RULE_CONTEXT_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_CAST \
    ((cls), E_TYPE_RULE_CONTEXT, ERuleContextClass))
#define E_IS_RULE_CONTEXT(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE \
    ((obj), E_TYPE_RULE_CONTEXT))
#define E_IS_RULE_CONTEXT_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_TYPE \
    ((cls), E_TYPE_RULE_CONTEXT))
#define E_RULE_CONTEXT_GET_CLASS(obj) \
    (G_TYPE_INSTANCE_GET_CLASS \
    ((obj), E_TYPE_RULE_CONTEXT, ERuleContextClass))

G_BEGIN_DECLS

typedef struct _ERuleContext ERuleContext;
typedef struct _ERuleContextClass ERuleContextClass;
typedef struct _ERuleContextPrivate ERuleContextPrivate;

/* backend capabilities, this is a hack since we don't support nested rules */
enum {
    E_RULE_CONTEXT_GROUPING = 1 << 0,
    E_RULE_CONTEXT_THREADING = 1 << 1
};

typedef void    (*ERuleContextRegisterFunc) (ERuleContext *context,
                         EFilterRule *rule,
                         gpointer user_data);
typedef void    (*ERuleContextPartFunc)     (ERuleContext *context,
                         EFilterPart *part);
typedef void    (*ERuleContextRuleFunc)     (ERuleContext *context,
                         EFilterRule *part);
typedef EFilterPart *
        (*ERuleContextNextPartFunc) (ERuleContext *context,
                         EFilterPart *part);
typedef EFilterRule *
        (*ERuleContextNextRuleFunc) (ERuleContext *context,
                         EFilterRule *rule,
                         const gchar *source);

struct _ERuleContext {
    GObject parent;
    ERuleContextPrivate *priv;

    gchar *error;       /* string version of error */

    guint32 flags;      /* capability flags */

    GList *parts;
    GList *rules;

    GHashTable *part_set_map; /* map set types to part types */
    GList *part_set_list;
    GHashTable *rule_set_map; /* map set types to rule types */
    GList *rule_set_list;
};

struct _ERuleContextClass {
    GObjectClass parent_class;

    /* methods */
    gint        (*load)         (ERuleContext *context,
                         const gchar *system,
                         const gchar *user);
    gint        (*save)         (ERuleContext *context,
                         const gchar *user);
    gint        (*revert)       (ERuleContext *context,
                         const gchar *user);

    GList *     (*delete_uri)       (ERuleContext *context,
                         const gchar *uri,
                         GCompareFunc compare_func);
    GList *     (*rename_uri)       (ERuleContext *context,
                         const gchar *old_uri,
                         const gchar *new_uri,
                         GCompareFunc compare_func);

    EFilterElement *(*new_element)      (ERuleContext *context,
                         const gchar *name);

    /* signals */
    void        (*rule_added)       (ERuleContext *context,
                         EFilterRule *rule);
    void        (*rule_removed)     (ERuleContext *context,
                         EFilterRule *rule);
    void        (*changed)      (ERuleContext *context);
};

struct _part_set_map {
    gchar *name;
    GType type;
    ERuleContextPartFunc append;
    ERuleContextNextPartFunc next;
};

struct _rule_set_map {
    gchar *name;
    GType type;
    ERuleContextRuleFunc append;
    ERuleContextNextRuleFunc next;
};

GType       e_rule_context_get_type     (void) G_GNUC_CONST;
ERuleContext *  e_rule_context_new      (void);

gint        e_rule_context_load     (ERuleContext *context,
                         const gchar *system,
                         const gchar *user);
gint        e_rule_context_save     (ERuleContext *context,
                         const gchar *user);
gint        e_rule_context_revert       (ERuleContext *context,
                         const gchar *user);

void        e_rule_context_add_part     (ERuleContext *context,
                         EFilterPart *part);
EFilterPart *   e_rule_context_find_part    (ERuleContext *context,
                         const gchar *name);
EFilterPart *   e_rule_context_create_part  (ERuleContext *context,
                         const gchar *name);
EFilterPart *   e_rule_context_next_part    (ERuleContext *context,
                         EFilterPart *last);

EFilterRule *   e_rule_context_next_rule    (ERuleContext *context,
                         EFilterRule *last,
                         const gchar *source);
EFilterRule *   e_rule_context_find_rule    (ERuleContext *context,
                         const gchar *name,
                         const gchar *source);
EFilterRule *   e_rule_context_find_rank_rule   (ERuleContext *context,
                         gint rank,
                         const gchar *source);
void        e_rule_context_add_rule     (ERuleContext *context,
                         EFilterRule *rule);
void        e_rule_context_add_rule_gui (ERuleContext *context,
                         EFilterRule *rule,
                         const gchar *title,
                         const gchar *path);
void        e_rule_context_remove_rule  (ERuleContext *context,
                         EFilterRule *rule);

void        e_rule_context_rank_rule    (ERuleContext *context,
                         EFilterRule *rule,
                         const gchar *source,
                         gint rank);
gint        e_rule_context_get_rank_rule    (ERuleContext *context,
                         EFilterRule *rule,
                         const gchar *source);

void        e_rule_context_add_part_set (ERuleContext *context,
                         const gchar *setname,
                         GType part_type,
                         ERuleContextPartFunc append,
                         ERuleContextNextPartFunc next);
void        e_rule_context_add_rule_set (ERuleContext *context,
                         const gchar *setname,
                         GType rule_type,
                         ERuleContextRuleFunc append,
                         ERuleContextNextRuleFunc next);

EFilterElement *e_rule_context_new_element  (ERuleContext *context,
                         const gchar *name);

GList *     e_rule_context_delete_uri   (ERuleContext *context,
                         const gchar *uri,
                         GCompareFunc compare);
GList *     e_rule_context_rename_uri   (ERuleContext *context,
                         const gchar *old_uri,
                         const gchar *new_uri,
                         GCompareFunc compare);

void        e_rule_context_free_uri_list    (ERuleContext *context,
                         GList *uris);

G_END_DECLS

#endif /* E_RULE_CONTEXT_H */