path: root/shell/e-component-registry.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-component-registry.c
 *
 * Copyright (C) 2000, 2001, 2002  Ximian, Inc.
 *
 * 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.
 *
 * Author: Ettore Perazzoli
 */

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

#include "e-component-registry.h"

#include "e-util/e-lang-utils.h"

#include <gal/util/e-util.h>

#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-exception.h>

#include <string.h>
#include <stdlib.h>


#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *parent_class = NULL;


struct _EComponentRegistryPrivate {
    GSList *infos;
};


/* EComponentInfo handling.  */

static EComponentInfo *
component_info_new (const char *id,
            const char *button_label,
            int sort_order,
            GdkPixbuf *button_icon)
{
    EComponentInfo *info = g_new0 (EComponentInfo, 1);

    info->id = g_strdup (id);
    info->button_label = g_strdup (button_label);
    info->sort_order = sort_order;

    info->button_icon = button_icon;
    g_object_ref (button_icon);

    return info;
}

static void
component_info_free (EComponentInfo *info)
{
    g_free (info->id);
    g_free (info->button_label);

    if (info->iface != NULL)
        bonobo_object_release_unref (info->iface, NULL);

    g_free (info);
}

static int
component_info_compare_func (EComponentInfo *a,
                 EComponentInfo *b)
{
    if (a->sort_order != b->sort_order)
        return a->sort_order - b->sort_order;

    return strcmp (a->button_label, b->button_label);
}


/* Utility methods.  */

static void
query_components (EComponentRegistry *registry)
{
    Bonobo_ServerInfoList *info_list;
    CORBA_Environment ev;
    GSList *language_list;
    int i;

    CORBA_exception_init (&ev);

    info_list = bonobo_activation_query ("repo_ids.has ('IDL:GNOME/Evolution/Component:1.0')", NULL, &ev);
    if (BONOBO_EX (&ev)) {
        char *ex_text = bonobo_exception_get_text (&ev);
        g_warning ("Cannot query for components: %s\n", ex_text);
        g_free (ex_text);
        CORBA_exception_free (&ev);
        return;
    }

    language_list = e_get_language_list ();

    for (i = 0; i < info_list->_length; i++) {
        const char *id = info_list->_buffer[i].iid;
        const char *label = bonobo_server_info_prop_lookup (& info_list->_buffer[i],
                                    "evolution:button_label",
                                    language_list);
        const char *sort_order_string = bonobo_server_info_prop_lookup (& info_list->_buffer[i],
                                        "evolution:button_sort_order",
                                        NULL);
        int sort_order;

        if (sort_order_string == NULL)
            sort_order = 0;
        else
            sort_order = atoi (sort_order_string);

        registry->priv->infos = g_slist_prepend (registry->priv->infos,
                             component_info_new (id, label, sort_order, NULL));
    }

    CORBA_free (info_list);
    CORBA_exception_free (&ev);

    registry->priv->infos = g_slist_sort (registry->priv->infos,
                          (GCompareFunc) component_info_compare_func);
}


/* GObject methods.  */

static void
impl_finalize (GObject *object)
{
    EComponentRegistry *component_registry;
    EComponentRegistryPrivate *priv;

    component_registry = E_COMPONENT_REGISTRY (object);
    priv = component_registry->priv;

    g_slist_foreach (priv->infos, (GFunc) component_info_free, NULL);
    g_free (priv);

    (* G_OBJECT_CLASS (parent_class)->finalize) (object);
}


static void
class_init (EComponentRegistryClass *klass)
{
    GObjectClass *object_class;

    object_class = G_OBJECT_CLASS (klass);
    object_class->finalize = impl_finalize;

    parent_class = g_type_class_ref(PARENT_TYPE);
}


static void
init (EComponentRegistry *registry)
{
    registry->priv = g_new0 (EComponentRegistryPrivate, 1);

    query_components (registry);
}


EComponentRegistry *
e_component_registry_new (void)
{
    return g_object_new (e_component_registry_get_type (), NULL);
}


GSList *
e_component_registry_peek_list (EComponentRegistry *registry)
{
    g_return_val_if_fail (E_IS_COMPONENT_REGISTRY (registry), NULL);

    return registry->priv->infos;
}


EComponentInfo *
e_component_registry_peek_info (EComponentRegistry *registry,
                const char *id)
{
    GSList *p;

    g_return_val_if_fail (E_IS_COMPONENT_REGISTRY (registry), NULL);

    for (p = registry->priv->infos; p != NULL; p = p->next) {
        EComponentInfo *info = p->data;

        if (strcmp (info->id, id) == 0)
            return info;
    }

    return NULL;
}

GNOME_Evolution_Component
e_component_registry_activate (EComponentRegistry *registry,
                   const char *id,
                   CORBA_Environment  *ev)
{
    EComponentInfo *info;

    g_return_val_if_fail (E_IS_COMPONENT_REGISTRY (registry), CORBA_OBJECT_NIL);

    info = e_component_registry_peek_info (registry, id);
    if (info == NULL) {
        g_warning (G_GNUC_FUNCTION " - Unknown id \"%s\"", id);
        return CORBA_OBJECT_NIL;
    }

    if (info->iface != CORBA_OBJECT_NIL)
        return bonobo_object_dup_ref (info->iface, NULL);

    info->iface = bonobo_activation_activate_from_id (info->id, 0, NULL, ev);
    if (BONOBO_EX (ev) || info->iface == CORBA_OBJECT_NIL) {
        info->iface = CORBA_OBJECT_NIL;
        return CORBA_OBJECT_NIL;
    }

    return bonobo_object_dup_ref (info->iface, NULL);
}


E_MAKE_TYPE (e_component_registry, "EComponentRegistry", EComponentRegistry,
         class_init, init, PARENT_TYPE)