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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
 *           Jeffrey Stedfast <fejj@ximian.com>
 *
 * 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */


#ifndef _RULE_EDITOR_H
#define _RULE_EDITOR_H

#include <gtk/gtk.h>
#include <glade/glade.h>

#include "rule-context.h"
#include "filter-rule.h"

#define RULE_TYPE_EDITOR            (rule_editor_get_type ())
#define RULE_EDITOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), RULE_TYPE_EDITOR, RuleEditor))
#define RULE_EDITOR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), RULE_TYPE_EDITOR, RuleEditorClass))
#define IS_RULE_EDITOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), RULE_TYPE_EDITOR))
#define IS_RULE_EDITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), RULE_TYPE_EDITOR))
#define RULE_EDITOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), RULE_TYPE_EDITOR, RuleEditorClass))

typedef struct _RuleEditor  RuleEditor;
typedef struct _RuleEditorClass RuleEditorClass;
typedef struct _RuleEditorUndo  RuleEditorUndo;

struct _RuleEditor {
    GtkDialog parent_object;

    GtkListStore *model;
    GtkTreeView *list;

    RuleContext *context;
    FilterRule *current;
    FilterRule *edit;   /* for editing/adding rules, so we only do 1 at a time */

    GtkWidget *dialog;

    char *source;

    struct _RuleEditorUndo *undo_log;   /* cancel/undo log */
    unsigned int undo_active:1; /* we're performing undo */

    struct _RuleEditorPrivate *priv;
};

struct _RuleEditorClass {
    GtkDialogClass parent_class;

    /* virtual methods */
    void (*set_sensitive) (RuleEditor *);
    void (*set_source) (RuleEditor *, const char *source);

    FilterRule *(*create_rule) (RuleEditor *);

    /* signals */
};

enum {
    RULE_EDITOR_LOG_EDIT,
    RULE_EDITOR_LOG_ADD,
    RULE_EDITOR_LOG_REMOVE,
    RULE_EDITOR_LOG_RANK,
};

struct _RuleEditorUndo {
    struct _RuleEditorUndo *next;

    unsigned int type;
    FilterRule *rule;
    int rank;
    int newrank;
};

GType rule_editor_get_type(void);
RuleEditor *rule_editor_new(RuleContext *rc, const char *source, const char *label);

void rule_editor_construct(RuleEditor *re, RuleContext *context, GladeXML *gui, const char *source, const char *label);

/* methods */
void rule_editor_set_source(RuleEditor *re, const char *source);
/* calculates the sensitivity of the editor */
void rule_editor_set_sensitive(RuleEditor *re);
/* used internally to create a new rule appropriate for the editor */
struct _FilterRule *rule_editor_create_rule(RuleEditor *re);

#endif /* ! _RULE_EDITOR_H */