path: root/filter/filter-context.c

/*
 *  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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

#include <gtk/gtktypeutils.h>
#include <gtk/gtkobject.h>

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

/* For poking into filter-folder guts */
#include "filter-folder.h"

#define d(x)

static void filter_context_class_init   (FilterContextClass *class);
static void filter_context_init (FilterContext *gspaper);
static void filter_context_finalise (GtkObject *obj);

static int filter_rename_uri(RuleContext *f, const char *olduri, const char *newuri, GCompareFunc cmp);
static int filter_delete_uri(RuleContext *f, const char *uri, GCompareFunc cmp);

#define _PRIVATE(x) (((FilterContext *)(x))->priv)

struct _FilterContextPrivate {
};

static RuleContextClass *parent_class;

enum {
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

guint
filter_context_get_type (void)
{
    static guint type = 0;
    
    if (!type) {
        GtkTypeInfo type_info = {
            "FilterContext",
            sizeof(FilterContext),
            sizeof(FilterContextClass),
            (GtkClassInitFunc)filter_context_class_init,
            (GtkObjectInitFunc)filter_context_init,
            (GtkArgSetFunc)NULL,
            (GtkArgGetFunc)NULL
        };
        
        type = gtk_type_unique(rule_context_get_type (), &type_info);
    }
    
    return type;
}

static void
filter_context_class_init (FilterContextClass *class)
{
    GtkObjectClass *object_class;
    RuleContextClass *rule_class = (RuleContextClass *)class;

    object_class = (GtkObjectClass *)class;
    parent_class = gtk_type_class(rule_context_get_type ());

    object_class->finalize = filter_context_finalise;

    /* override methods */
    rule_class->rename_uri = filter_rename_uri;
    rule_class->delete_uri = filter_delete_uri;

    /* signals */

    gtk_object_class_add_signals(object_class, signals, LAST_SIGNAL);
}

static void
filter_context_init (FilterContext *o)
{
    o->priv = g_malloc0(sizeof(*o->priv));

    rule_context_add_part_set((RuleContext *)o, "partset", filter_part_get_type(),
                  rule_context_add_part, rule_context_next_part);
    rule_context_add_part_set((RuleContext *)o, "actionset", filter_part_get_type(),
                  (RCPartFunc)filter_context_add_action,
                  (RCNextPartFunc)filter_context_next_action);

    rule_context_add_rule_set((RuleContext *)o, "ruleset", filter_filter_get_type(),
                  (RCRuleFunc)rule_context_add_rule, rule_context_next_rule);
}

static void
filter_context_finalise(GtkObject *obj)
{
    FilterContext *o = (FilterContext *)obj;

    g_list_foreach(o->actions, (GFunc)gtk_object_unref, NULL);
    g_list_free(o->actions);

        ((GtkObjectClass *)(parent_class))->finalize(obj);
}

/**
 * filter_context_new:
 *
 * Create a new FilterContext object.
 * 
 * Return value: A new #FilterContext object.
 **/
FilterContext *
filter_context_new(void)
{
    FilterContext *o = (FilterContext *)gtk_type_new(filter_context_get_type ());
    return o;
}

void filter_context_add_action(FilterContext *f, FilterPart *action)
{
    d(printf("find action : "));
    f->actions = g_list_append(f->actions, action);
}

FilterPart *filter_context_find_action(FilterContext *f, const char *name)
{
    d(printf("find action : "));
    return filter_part_find_list(f->actions, name);
}

FilterPart  *filter_context_create_action(FilterContext *f, const char *name)
{
    FilterPart *part;

    part = filter_context_find_action(f, name);
    if (part)
        part = filter_part_clone(part);
    return part;
}

FilterPart  *filter_context_next_action(FilterContext *f, FilterPart *last)
{
    return filter_part_next_list(f->actions, last);
}

/* We search for any folders in our actions list that need updating, update them */
static int filter_rename_uri(RuleContext *f, const char *olduri, const char *newuri, GCompareFunc cmp)
{
    FilterRule *rule;
    GList *l, *el;
    FilterPart *action;
    FilterElement *element;
    const char *name;
    int count = 0;

    name = strrchr(newuri, '/');
    if (name)
        name++;
    else
        name = newuri;

    d(printf("uri '%s' renamed to '%s'\n", olduri, newuri));

    /* For all rules, for all actions, for all elements, rename any folder elements */
    /* Yes we could do this inside each part itself, but not today */
    rule = NULL;
    while ( (rule = rule_context_next_rule(f, rule, NULL)) ) {
        int rulecount = 0;

        d(printf("checking rule '%s'\n", rule->name));
        
        l = FILTER_FILTER(rule)->actions;
        while (l) {
            action = l->data;

            d(printf("checking action '%s'\n", action->name));
            
            el = action->elements;
            while (el) {
                element = el->data;

                d(printf("checking element '%s'\n", element->name));
                if (IS_FILTER_FOLDER(element))
                    d(printf(" is folder, existing uri = '%s'\n", FILTER_FOLDER(element)->uri));

                if (IS_FILTER_FOLDER(element)
                    && cmp(((FilterFolder *)element)->uri, olduri)) {
                    d(printf(" Changed!\n"));
                    filter_folder_set_value((FilterFolder *)element, newuri, name);
                    rulecount++;
                }
                el = el->next;
            }
            l = l->next;
        }

        if (rulecount)
            filter_rule_emit_changed(rule);

        count += rulecount;
    }

    return count + parent_class->rename_uri(f, olduri, newuri, cmp);
}

static int filter_delete_uri(RuleContext *f, const char *uri, GCompareFunc cmp)
{
    /* We basically should do similar to above, but when we find it,
       Remove the action, and if thats the last action, remove the rule? */

    /* But i'm not confident the rest of the mailer wont accidentlly delete
       something which was just temporarily not available. */

    return parent_class->delete_uri(f, uri, cmp);
}