path: root/shell/e-corba-config-page.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-corba-config-page.c
 *
 * Copyright (C) 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 <ettore@ximian.com>
 */

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

#include "e-corba-config-page.h"

#include "Evolution.h"

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

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


#define PARENT_TYPE e_config_page_get_type ()
static EConfigPageClass *parent_class = NULL;

struct _ECorbaConfigPagePrivate {
    GNOME_Evolution_ConfigControl config_control_interface;

    BonoboListener *listener;
    Bonobo_EventSource_ListenerId listener_id;

    Bonobo_EventSource event_source;
};


/* ::ConfigControl interface handling.  */

static void
listener_event_callback (BonoboListener *listener,
             char *event_name, 
             CORBA_any *any,
             CORBA_Environment *ev,
             void *data)
{
    ECorbaConfigPage *corba_config_page;

    corba_config_page = E_CORBA_CONFIG_PAGE (data);

    if (strcmp (event_name, "changed") == 0)
        e_config_page_changed (E_CONFIG_PAGE (corba_config_page));
}

static void
setup_listener (ECorbaConfigPage *corba_config_page,
        GNOME_Evolution_ConfigControl config_control_interface)
{
    ECorbaConfigPagePrivate *priv;
    Bonobo_EventSource event_source;
    CORBA_Environment ev;

    priv = corba_config_page->priv;

    CORBA_exception_init (&ev);

    event_source = GNOME_Evolution_ConfigControl__get_eventSource (config_control_interface, &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Cannot get eventSource interface for ConfigPage -- %s", BONOBO_EX_ID (&ev));
    } else {
        priv->listener = bonobo_listener_new (listener_event_callback, corba_config_page);
        priv->listener_id = Bonobo_EventSource_addListener (event_source,
                                    bonobo_object_corba_objref (BONOBO_OBJECT (priv->listener)),
                                    &ev);

        if (! BONOBO_EX (&ev)) {
            priv->config_control_interface = config_control_interface;
            priv->event_source = event_source;
        } else {
            g_warning ("Cannot add listener for ConfigPage -- %s", BONOBO_EX_ID (&ev));

            bonobo_object_unref (BONOBO_OBJECT (priv->listener));
            priv->listener = NULL;
        }
    }

    CORBA_exception_free (&ev);
}


/* GtkObject methods.  */

static void
impl_destroy (GtkObject *object)
{
    ECorbaConfigPage *corba_config_page;
    ECorbaConfigPagePrivate *priv;

    corba_config_page = E_CORBA_CONFIG_PAGE (object);
    priv = corba_config_page->priv;

    if (priv != NULL) {
        CORBA_Environment ev;

        CORBA_exception_init (&ev);

        if (priv->config_control_interface != CORBA_OBJECT_NIL)
            bonobo_object_release_unref (priv->config_control_interface, &ev);

        if (priv->listener != NULL) {
            Bonobo_EventSource_removeListener (priv->event_source, priv->listener_id, &ev);
            bonobo_object_unref (BONOBO_OBJECT (priv->listener));

            bonobo_object_release_unref (priv->event_source, &ev);
        }

        CORBA_exception_free (&ev);

        g_free (priv);
        corba_config_page->priv = NULL;
    }

    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


/* EConfigPage methods.  */

static void
impl_apply (EConfigPage *config_page)
{
    ECorbaConfigPage *corba_config_page;
    ECorbaConfigPagePrivate *priv;
    CORBA_Environment ev;

    corba_config_page = E_CORBA_CONFIG_PAGE (config_page);
    priv = corba_config_page->priv;

    CORBA_exception_init (&ev);

    GNOME_Evolution_ConfigControl_apply (priv->config_control_interface, &ev);

    if (BONOBO_EX (&ev))
        g_warning ("Cannot apply settings -- %s", BONOBO_EX_ID (&ev));

    CORBA_exception_free (&ev);
}


/* GTK+ ctors.  */

static void
class_init (ECorbaConfigPageClass *class)
{
    GtkObjectClass *object_class;
    EConfigPageClass *config_page_class;

    object_class = GTK_OBJECT_CLASS (class);
    object_class->destroy = impl_destroy;

    config_page_class = E_CONFIG_PAGE_CLASS (class);
    config_page_class->apply = impl_apply;

    parent_class = gtk_type_class (PARENT_TYPE);
}

static void
init (ECorbaConfigPage *corba_config_page)
{
    ECorbaConfigPagePrivate *priv;

    priv = g_new (ECorbaConfigPagePrivate, 1);
    priv->config_control_interface = CORBA_OBJECT_NIL;
    priv->listener                 = NULL;
    priv->listener_id              = (Bonobo_EventSource_ListenerId) 0;
    priv->event_source             = CORBA_OBJECT_NIL;

    corba_config_page->priv = priv;
}


gboolean
e_corba_config_page_construct (ECorbaConfigPage *corba_config_page,
                   GNOME_Evolution_ConfigControl corba_object)
{
    Bonobo_Control control;
    GtkWidget *control_widget;
    CORBA_Environment ev;

    g_return_val_if_fail (E_IS_CORBA_CONFIG_PAGE (corba_config_page), FALSE);
    g_return_val_if_fail (corba_object != CORBA_OBJECT_NIL, FALSE);

    CORBA_exception_init (&ev);

    control = GNOME_Evolution_ConfigControl__get_control (corba_object, &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Can't get control from ::ConfigControl -- %s", BONOBO_EX_ID (&ev));
        CORBA_exception_init (&ev);
        return FALSE;
    }

    control_widget = bonobo_widget_new_control_from_objref (control, CORBA_OBJECT_NIL);
    gtk_widget_show (control_widget);
    gtk_container_add (GTK_CONTAINER (corba_config_page), control_widget);

    setup_listener (corba_config_page, corba_object);

    /* Notice we *don't* unref the corba_object here as
       bonobo_widget_new_control_from_objref() effectively takes ownership
       for the object that we get from ::__get_control.  */

    CORBA_exception_free (&ev);

    return TRUE;
}

GtkWidget *
e_corba_config_page_new_from_objref (GNOME_Evolution_ConfigControl corba_object)
{
    ECorbaConfigPage *corba_config_page;

    g_return_val_if_fail (corba_object != CORBA_OBJECT_NIL, NULL);
    g_return_val_if_fail (corba_object != CORBA_OBJECT_NIL, NULL);

    corba_config_page = gtk_type_new (e_corba_config_page_get_type ());
    if (! e_corba_config_page_construct (corba_config_page, corba_object)) {
        gtk_widget_destroy (GTK_WIDGET (corba_config_page));
        return NULL;
    }

    return GTK_WIDGET (corba_config_page);
}


E_MAKE_TYPE (e_corba_config_page, "ECorbaConfigPgae", ECorbaConfigPage, class_init, init, PARENT_TYPE)