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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* evolution-config-control.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
 */

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

#include "evolution-config-control.h"

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

#include <gtk/gtksignal.h>

#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-event-source.h>


#define PARENT_TYPE BONOBO_X_OBJECT_TYPE
static BonoboXObjectClass *parent_class = NULL;

struct _EvolutionConfigControlPrivate {
    gboolean changed;
    BonoboControl *control;
    BonoboEventSource *event_source;
};

enum {
    APPLY,
    LAST_SIGNAL
};
static int signals[LAST_SIGNAL] = { 0 };


/* GObject methods.  */

static void
impl_finalize (GObject *object)
{
    EvolutionConfigControl *config_control;
    EvolutionConfigControlPrivate *priv;

    config_control = EVOLUTION_CONFIG_CONTROL (object);
    priv = config_control->priv;

    if (priv != NULL) {
        bonobo_object_unref (BONOBO_OBJECT (priv->control));
        bonobo_object_unref (BONOBO_OBJECT (priv->event_source));

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

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


/* Evolution::ConfigControl CORBA methods.  */

static void
impl_apply (PortableServer_Servant servant,
        CORBA_Environment *ev)
{
    EvolutionConfigControl *config_control;
    EvolutionConfigControlPrivate *priv;

    config_control = EVOLUTION_CONFIG_CONTROL (bonobo_object_from_servant (servant));
    priv = config_control->priv;

    g_signal_emit (GTK_OBJECT (config_control), signals[APPLY], 0);

    priv->changed = FALSE;
}

static Bonobo_Control
impl__get_control (PortableServer_Servant servant,
           CORBA_Environment *ev)
{
    EvolutionConfigControl *config_control;
    EvolutionConfigControlPrivate *priv;

    config_control = EVOLUTION_CONFIG_CONTROL (bonobo_object_from_servant (servant));
    priv = config_control->priv;

    bonobo_object_ref (BONOBO_OBJECT (priv->control));

    return CORBA_Object_duplicate (bonobo_object_corba_objref (BONOBO_OBJECT (priv->control)), ev);
}

static Bonobo_EventSource
impl__get_eventSource (PortableServer_Servant servant,
               CORBA_Environment *ev)
{
    EvolutionConfigControl *config_control;
    EvolutionConfigControlPrivate *priv;

    config_control = EVOLUTION_CONFIG_CONTROL (bonobo_object_from_servant (servant));
    priv = config_control->priv;

    bonobo_object_ref (BONOBO_OBJECT (priv->event_source));

    return CORBA_Object_duplicate (bonobo_object_corba_objref (BONOBO_OBJECT (priv->event_source)), ev);
}


static void
class_init (EvolutionConfigControlClass *class)
{
    POA_GNOME_Evolution_ConfigControl__epv *epv;
    GObjectClass *object_class;

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

    epv = &class->epv;
    epv->apply            = impl_apply;
    epv->_get_control     = impl__get_control;
    epv->_get_eventSource = impl__get_eventSource;

    signals[APPLY] = gtk_signal_new ("apply", GTK_RUN_FIRST,
                     GTK_CLASS_TYPE (object_class),
                     GTK_SIGNAL_OFFSET (EvolutionConfigControlClass, apply),
                     gtk_marshal_NONE__NONE,
                     GTK_TYPE_NONE, 0);

    parent_class = gtk_type_class (PARENT_TYPE);
}

static void
init (EvolutionConfigControl *config_control)
{
    EvolutionConfigControlPrivate *priv;

    priv = g_new (EvolutionConfigControlPrivate, 1);
    priv->changed      = FALSE;
    priv->control      = NULL;
    priv->event_source = bonobo_event_source_new ();

    config_control->priv = priv;
}


void
evolution_config_control_construct (EvolutionConfigControl *control,
                    GtkWidget *widget)
{
    EvolutionConfigControlPrivate *priv;

    g_return_if_fail (EVOLUTION_IS_CONFIG_CONTROL (control));
    g_return_if_fail (GTK_IS_WIDGET (widget));

    priv = control->priv;

    priv->control = bonobo_control_new (widget);
}

EvolutionConfigControl *
evolution_config_control_new (GtkWidget *widget)
{
    EvolutionConfigControl *new;

    g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);

    new = g_object_new (evolution_config_control_get_type (), NULL);
    evolution_config_control_construct (new, widget);

    return new;
}

void
evolution_config_control_changed (EvolutionConfigControl *config_control)
{
    EvolutionConfigControlPrivate *priv;
    CORBA_Environment ev;
    CORBA_any *null_value;

    g_return_if_fail (EVOLUTION_IS_CONFIG_CONTROL (config_control));

    priv = config_control->priv;

    if (priv->changed)
        return;

    priv->changed = TRUE;

    CORBA_exception_init (&ev);

    null_value = CORBA_any__alloc ();
    null_value->_type = TC_null;

    bonobo_event_source_notify_listeners (priv->event_source, "changed", null_value, &ev);

    CORBA_free (null_value);

    CORBA_exception_free (&ev);
}


E_MAKE_X_TYPE (evolution_config_control, "EvolutionConfigControl", EvolutionConfigControl,
           class_init, init, PARENT_TYPE,
           POA_GNOME_Evolution_ConfigControl__init,
           GTK_STRUCT_OFFSET (EvolutionConfigControlClass, epv))