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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:
 *      David Trowbridge <trowbrds@cs.colorado.edu>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "eab-config.h"

static GObjectClass *ecp_parent_class;

struct _EABConfigPrivate {
    guint source_changed_id;
};

static void
ecp_init (EABConfig *cfg)
{
    cfg->priv = G_TYPE_INSTANCE_GET_PRIVATE (
        cfg, EAB_TYPE_CONFIG, EABConfigPrivate);
}

static void
ecp_target_free (EConfig *ec, EConfigTarget *t)
{
    struct _EABConfigPrivate *p = EAB_CONFIG (ec)->priv;

    if (ec->target == t) {
        switch (t->type) {
        case EAB_CONFIG_TARGET_SOURCE: {
            EABConfigTargetSource *s = (EABConfigTargetSource *) t;

            if (p->source_changed_id) {
                g_signal_handler_disconnect (s->source, p->source_changed_id);
                p->source_changed_id = 0;
            }
            break; }
        }
    }

    switch (t->type) {
    case EAB_CONFIG_TARGET_SOURCE: {
        EABConfigTargetSource *s = (EABConfigTargetSource *) t;

        if (s->source)
            g_object_unref (s->source);
        break; }
    }

    ((EConfigClass *) ecp_parent_class)->target_free (ec, t);
}

static void
ecp_source_changed (struct _ESource *source, EConfig *ec)
{
    e_config_target_changed (ec, E_CONFIG_TARGET_CHANGED_STATE);
}

static void
ecp_set_target (EConfig *ec, EConfigTarget *t)
{
    struct _EABConfigPrivate *p = EAB_CONFIG (ec)->priv;

    ((EConfigClass *) ecp_parent_class)->set_target (ec, t);

    if (t) {
        switch (t->type) {
        case EAB_CONFIG_TARGET_SOURCE: {
            EABConfigTargetSource *s = (EABConfigTargetSource *) t;

            p->source_changed_id = g_signal_connect (
                s->source, "changed",
                G_CALLBACK (ecp_source_changed), ec);
            break; }
        }
    }
}

static void
ecp_class_init (GObjectClass *klass)
{
    ((EConfigClass *) klass)->set_target = ecp_set_target;
    ((EConfigClass *) klass)->target_free = ecp_target_free;

    g_type_class_add_private (klass, sizeof (struct _EABConfigPrivate));
}

GType
eab_config_get_type (void)
{
    static GType type = 0;

    if (!type) {
        static const GTypeInfo info = {
            sizeof (EABConfigClass),
            NULL, NULL,
            (GClassInitFunc) ecp_class_init,
            NULL, NULL,
            sizeof (EABConfig), 0,
            (GInstanceInitFunc) ecp_init
        };

        ecp_parent_class = g_type_class_ref (e_config_get_type ());
        type = g_type_register_static (e_config_get_type (), "EABConfig", &info, 0);
    }

    return type;
}

EABConfig *
eab_config_new (gint type, const gchar *menuid)
{
    EABConfig *ecp = g_object_new (eab_config_get_type (), NULL);
    e_config_construct (&ecp->config, type, menuid);
    return ecp;
}

EABConfigTargetSource *
eab_config_target_new_source (EABConfig *ecp, struct _ESource *source)
{
    EABConfigTargetSource *t = e_config_target_new (
        &ecp->config, EAB_CONFIG_TARGET_SOURCE, sizeof (*t));

    t->source = source;
    g_object_ref (source);

    return t;
}