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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: 8; c-basic-offset: 8 -*- */
/*
* Nautilus
*
* Copyright (C) 2000 Eazel, Inc.
*
* Nautilus is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* Nautilus 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* nautilus-component-adapter-factory.c - client wrapper for the
* special adapter component, which wraps Bonobo components as
* Nautilus Views and in the process keeps evil synchronous I/O out of
* the Nautilus process itself.
*/
#include <config.h>
#include "nautilus-component-adapter-factory.h"
#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-moniker-util.h>
#include <bonobo/bonobo-object.h>
#include <eel/eel-debug.h>
#include <libgnome/gnome-macros.h>
#include <libnautilus-adapter/nautilus-adapter-factory.h>
#define NAUTILUS_COMPONENT_ADAPTER_FACTORY_IID "OAFIID:Nautilus_Adapter_Factory"
struct NautilusComponentAdapterFactoryDetails {
Nautilus_ComponentAdapterFactory corba_factory;
};
static NautilusComponentAdapterFactory *global_component_adapter_factory = NULL;
GNOME_CLASS_BOILERPLATE (NautilusComponentAdapterFactory, nautilus_component_adapter_factory,
GtkObject, GTK_TYPE_OBJECT)
static void
activate_factory (NautilusComponentAdapterFactory *factory)
{
factory->details->corba_factory = bonobo_get_object
(NAUTILUS_COMPONENT_ADAPTER_FACTORY_IID,
"IDL:Nautilus/ComponentAdapterFactory:1.0", NULL);
}
static void
unref_factory (NautilusComponentAdapterFactory *factory)
{
CORBA_Environment ev;
CORBA_exception_init (&ev);
Bonobo_Unknown_unref (factory->details->corba_factory, &ev);
CORBA_exception_free (&ev);
}
static void
release_factory (NautilusComponentAdapterFactory *factory)
{
CORBA_Object_release (factory->details->corba_factory, NULL);
factory->details->corba_factory = CORBA_OBJECT_NIL;
}
static Nautilus_ComponentAdapterFactory
get_corba_factory (NautilusComponentAdapterFactory *factory)
{
CORBA_Environment ev;
Nautilus_ComponentAdapterFactory result;
gboolean need_unref;
CORBA_exception_init (&ev);
need_unref = FALSE;
if (CORBA_Object_is_nil (factory->details->corba_factory, &ev)
|| BONOBO_EX (&ev)
|| CORBA_Object_non_existent (factory->details->corba_factory, &ev)
|| BONOBO_EX (&ev)) {
release_factory (factory);
activate_factory (factory);
need_unref = TRUE;
}
CORBA_exception_free (&ev);
result = bonobo_object_dup_ref (factory->details->corba_factory, NULL);
if (need_unref) {
unref_factory (factory);
}
return result;
}
static void
nautilus_component_adapter_factory_instance_init (NautilusComponentAdapterFactory *factory)
{
factory->details = g_new0 (NautilusComponentAdapterFactoryDetails, 1);
}
static void
nautilus_component_adapter_factory_destroy (GtkObject *object)
{
NautilusComponentAdapterFactory *factory;
factory = NAUTILUS_COMPONENT_ADAPTER_FACTORY (object);
release_factory (factory);
g_free (factory->details);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
nautilus_component_adapter_factory_class_init (NautilusComponentAdapterFactoryClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass *) klass;
object_class->destroy = nautilus_component_adapter_factory_destroy;
}
static void
component_adapter_factory_at_exit_destructor (void)
{
if (global_component_adapter_factory != NULL) {
g_object_unref (global_component_adapter_factory);
}
}
NautilusComponentAdapterFactory *
nautilus_component_adapter_factory_get (void)
{
NautilusComponentAdapterFactory *factory;
if (global_component_adapter_factory == NULL) {
factory = NAUTILUS_COMPONENT_ADAPTER_FACTORY
(g_object_new (NAUTILUS_TYPE_COMPONENT_ADAPTER_FACTORY, NULL));
g_object_ref (factory);
gtk_object_sink (GTK_OBJECT (factory));
global_component_adapter_factory = factory;
eel_debug_call_at_shutdown (component_adapter_factory_at_exit_destructor);
}
return global_component_adapter_factory;
}
Nautilus_View
nautilus_component_adapter_factory_create_adapter (NautilusComponentAdapterFactory *factory,
Bonobo_Unknown component)
{
Nautilus_View nautilus_view;
Bonobo_Control bonobo_control;
Nautilus_ComponentAdapterFactory corba_factory;
CORBA_Environment ev;
CORBA_exception_init (&ev);
nautilus_view = Bonobo_Unknown_queryInterface
(component, "IDL:Nautilus/View:1.0", &ev);
if (BONOBO_EX (&ev)) {
nautilus_view = CORBA_OBJECT_NIL;
}
if (nautilus_view != CORBA_OBJECT_NIL) {
/* Object has the View interface, great! We might not
* need to adapt it.
*/
bonobo_control = Bonobo_Unknown_queryInterface
(component, "IDL:Bonobo/Control:1.0", &ev);
if (BONOBO_EX (&ev)) {
bonobo_control = CORBA_OBJECT_NIL;
}
if (bonobo_control != CORBA_OBJECT_NIL) {
/* It has the control interface too, so all is peachy. */
bonobo_object_release_unref (bonobo_control, NULL);
} else {
/* No control interface; we have no way to
* support a View that doesn't also support
* the Control interface, so fail.
*/
bonobo_object_release_unref (nautilus_view, NULL);
nautilus_view = CORBA_OBJECT_NIL;
}
} else {
/* No View interface, we must adapt the object */
corba_factory = get_corba_factory (factory);
nautilus_view = Nautilus_ComponentAdapterFactory_create_adapter
(corba_factory, component, &ev);
if (BONOBO_EX (&ev)) {
nautilus_view = CORBA_OBJECT_NIL;
}
bonobo_object_release_unref (corba_factory, NULL);
}
CORBA_exception_free (&ev);
return nautilus_view;
}
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