path: root/shell/e-corba-storage.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-corba-storage.c
 *
 * Copyright (C) 2000, 2001 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-corba-storage.h"

#include "e-shell-constants.h"

#include "Evolution.h"

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

#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-listener.h>

#include <gdk/gdkx.h>
#include <gtk/gtkmain.h>

#include <string.h>


#define PARENT_TYPE E_TYPE_STORAGE
static EStorageClass *parent_class = NULL;

typedef struct _StorageListenerServant StorageListenerServant;

struct _ECorbaStoragePrivate {
    GNOME_Evolution_Storage storage_interface;

    /* The Evolution::StorageListener interface we expose.  */
    GNOME_Evolution_StorageListener storage_listener_interface;
    StorageListenerServant *storage_listener_servant;

    GList *pending_opens;
};


/* Implementation of the CORBA Evolution::StorageListener interface.  */

static POA_GNOME_Evolution_StorageListener__vepv storage_listener_vepv;

struct _StorageListenerServant {
    POA_GNOME_Evolution_StorageListener servant;
    EStorage *storage;
};

static StorageListenerServant *
storage_listener_servant_new (ECorbaStorage *corba_storage)
{
    StorageListenerServant *servant;

    servant = g_new0 (StorageListenerServant, 1);

    servant->servant.vepv = &storage_listener_vepv;

    g_object_ref (corba_storage);
    servant->storage = E_STORAGE (corba_storage);

    return servant;
}

static void
storage_listener_servant_free (StorageListenerServant *servant)
{
    g_object_unref (servant->storage);

    g_free (servant);
}

#if 0
static void
impl_StorageListener_destroy (PortableServer_Servant servant,
                  CORBA_Environment *ev)
{
    /* FIXME */
}
#endif

static void
impl_StorageListener_notifyFolderCreated (PortableServer_Servant servant,
                      const CORBA_char *path,
                      const GNOME_Evolution_Folder *folder,
                      CORBA_Environment *ev)
{
    StorageListenerServant *storage_listener_servant;
    EStorage *storage;
    EFolder *e_folder;

    storage_listener_servant = (StorageListenerServant *) servant;
    storage = storage_listener_servant->storage;

    e_folder = e_folder_new (folder->displayName, folder->type, folder->description);

    e_folder_set_physical_uri     (e_folder, folder->physicalUri);
    e_folder_set_unread_count     (e_folder, folder->unreadCount);
    e_folder_set_can_sync_offline (e_folder, folder->canSyncOffline);
    e_folder_set_sorting_priority (e_folder, folder->sortingPriority);

    if (folder->customIconName[0] != '\0')
        e_folder_set_custom_icon (e_folder, folder->customIconName);

    if (! e_storage_new_folder (storage, path, e_folder)) {
        g_warning ("Cannot register folder -- %s %s\n", path, folder->displayName);
        CORBA_exception_set (ev,
                     CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_StorageListener_Exists,
                     NULL);
        g_object_unref (e_folder);
        return;
    }
}

static void
impl_StorageListener_notifyFolderUpdated (PortableServer_Servant servant,
                      const CORBA_char *path,
                      CORBA_long unread_count,
                      CORBA_Environment *ev)
{
    StorageListenerServant *storage_listener_servant;
    EStorage *storage;
    EFolder *e_folder;

    storage_listener_servant = (StorageListenerServant *) servant;
    storage = storage_listener_servant->storage;

    e_folder = e_storage_get_folder (storage, path);
    if (e_folder == NULL) {
        CORBA_exception_set (ev,
                     CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_StorageListener_NotFound,
                     NULL);
        return;
    }

    e_folder_set_unread_count (e_folder, unread_count);
}

static void
impl_StorageListener_notifyFolderRemoved (PortableServer_Servant servant,
                      const CORBA_char *path,
                      CORBA_Environment *ev)
{
    StorageListenerServant *storage_listener_servant;
    EStorage *storage;

    storage_listener_servant = (StorageListenerServant *) servant;
    storage = storage_listener_servant->storage;

    if (! e_storage_removed_folder (storage, path))
        CORBA_exception_set (ev,
                     CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_StorageListener_NotFound,
                     NULL);
}

static void
impl_StorageListener_notifyHasSubfolders (PortableServer_Servant servant,
                      const CORBA_char *path,
                      const CORBA_char *message,
                      CORBA_Environment *ev)
{
    StorageListenerServant *storage_listener_servant;
    EStorage *storage;

    storage_listener_servant = (StorageListenerServant *) servant;
    storage = storage_listener_servant->storage;

    if (! e_storage_declare_has_subfolders (storage, path, message)) {
        g_warning ("Cannot register subfolder tree -- %s\n", path);
        CORBA_exception_set (ev,
                     CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_StorageListener_Exists,
                     NULL);
    }
}


static gboolean
setup_storage_listener (ECorbaStorage *corba_storage)
{
    StorageListenerServant *servant;
    ECorbaStoragePrivate *priv;
    GNOME_Evolution_StorageListener storage_listener_interface;
    CORBA_Environment ev;

    priv = corba_storage->priv;

    servant = storage_listener_servant_new (corba_storage);

    CORBA_exception_init (&ev);

    POA_GNOME_Evolution_StorageListener__init (servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION)
        goto error;

    CORBA_free (PortableServer_POA_activate_object (bonobo_poa (), servant, &ev));
    if (ev._major != CORBA_NO_EXCEPTION)
        goto error;

    storage_listener_interface = PortableServer_POA_servant_to_reference (bonobo_poa (),
                                          servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION)
        goto error;

    priv->storage_listener_interface = storage_listener_interface;
    priv->storage_listener_servant = servant;

    return TRUE;

 error:
    storage_listener_servant_free (servant);
    CORBA_exception_free (&ev);
    return FALSE;
}


/* GObject methods.  */

static void
impl_dispose (GObject *object)
{
    CORBA_Environment ev;
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;

    corba_storage = E_CORBA_STORAGE (object);
    priv = corba_storage->priv;

    CORBA_exception_init (&ev);

    if (priv->storage_interface != CORBA_OBJECT_NIL) {
        Bonobo_Unknown_unref (priv->storage_interface, &ev);
        CORBA_Object_release (priv->storage_interface, &ev);
        priv->storage_interface = CORBA_OBJECT_NIL;
    }

    if (priv->storage_listener_interface != CORBA_OBJECT_NIL) {
        CORBA_Object_release (priv->storage_listener_interface, &ev);
        priv->storage_listener_interface = CORBA_OBJECT_NIL;
    }

    if (priv->storage_listener_servant != NULL) {
        PortableServer_ObjectId *object_id;

        object_id = PortableServer_POA_servant_to_id (bonobo_poa (), priv->storage_listener_servant,
                                  &ev);
        PortableServer_POA_deactivate_object (bonobo_poa (), object_id, &ev);

        CORBA_free (object_id);

        priv->storage_listener_servant = NULL;
    }

    CORBA_exception_free (&ev);

    if (priv->pending_opens != NULL) {
        g_warning ("destroying ECorbaStorage with pending async ops");
        priv->pending_opens = NULL;
    }

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

static void
impl_finalize (GObject *object)
{
    ECorbaStorage *corba_storage;

    corba_storage = E_CORBA_STORAGE (object);

    g_free (corba_storage->priv);

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


/* EStorage methods.  */

static void
get_folder_cb (EStorage *storage, EStorageResult result,
           const char *path, gpointer data)
{
    gboolean *done = data;

    *done = TRUE;
}

static EFolder *
get_folder (EStorage *storage, const char *path)
{
    EFolder *folder;
    char *path_dup, *p;

    folder = (* E_STORAGE_CLASS (parent_class)->get_folder) (storage, path);
    if (folder)
        return folder;

    /* If @path points to a part of the storage that hasn't been
     * opened yet, do that.
     */
    path_dup = g_strdup (path);
    p = strchr (path_dup + 1, '/');
    while (p) {
        *p = '\0';
        if (e_storage_get_has_subfolders (storage, path_dup)) {
            gboolean done = FALSE;

            e_storage_async_open_folder (storage, path_dup,
                             get_folder_cb, &done);
            while (!done)
                gtk_main_iteration ();
        }
        *p = '/';
        p = strchr (p + 1, '/');
    }

    return (* E_STORAGE_CLASS (parent_class)->get_folder) (storage, path);
}

struct async_folder_closure {
    EStorageResultCallback callback;
    EStorage *storage;
    void *data;
};

static void
async_folder_cb (BonoboListener *listener,
         const char *event_name, 
         const CORBA_any *any,
         CORBA_Environment *ev,
         gpointer user_data)
{
    struct async_folder_closure *closure = user_data;
    GNOME_Evolution_Storage_Result *corba_result;
    EStorageResult result;

    corba_result = any->_value;
    result = e_corba_storage_corba_result_to_storage_result (*corba_result);

    (* closure->callback) (closure->storage, result, closure->data);
    bonobo_object_unref (BONOBO_OBJECT (listener));

    g_object_unref (closure->storage);
    g_free (closure);
}


struct async_create_open_closure {
    EStorage *storage;
    char *path, *type, *description;
    EStorageResultCallback callback;
    void *data;
};

static void
async_create_open_cb (EStorage *storage, EStorageResult result,
              const char *path, void *data)
{
    struct async_create_open_closure *closure = data;

    if (result != E_STORAGE_OK) {
        (* closure->callback) (closure->storage, result,
                       closure->data);
    } else {
        e_storage_async_create_folder (closure->storage,
                           closure->path, closure->type,
                           closure->description,
                           closure->callback,
                           closure->data);
    }

    g_object_unref (closure->storage);
    g_free (closure->path);
    g_free (closure->type);
    g_free (closure->description);
    g_free (closure);
}

static void
async_create_folder (EStorage *storage, const char *path,
             const char *type, const char *description,
             EStorageResultCallback callback, void *data)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    const char *parent_uri;
    char *p;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    struct async_folder_closure *closure;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    p = strrchr (path, '/');
    if (p && p != path) {
        EFolder *parent;
        char *parent_path;

        parent_path = g_strndup (path, p - path);
        parent = e_storage_get_folder (storage, parent_path);
        parent_uri = e_folder_get_physical_uri (parent);

        if (e_folder_get_has_subfolders (parent)) {
            struct async_create_open_closure *open_closure;

            /* Force the parent folder to resolve its
             * children before creating the new folder.
             */
            open_closure = g_new (struct async_create_open_closure, 1);
            open_closure->storage = storage;
            g_object_ref (storage);
            open_closure->path = g_strdup (path);
            open_closure->type = g_strdup (type);
            open_closure->description = g_strdup (description);
            open_closure->callback = callback;
            open_closure->data = data;
            e_storage_async_open_folder (storage, parent_path,
                             async_create_open_cb,
                             open_closure);
            return;
        }
    } else
        parent_uri = "";

    closure = g_new (struct async_folder_closure, 1);
    closure->callback = callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    listener = bonobo_listener_new (async_folder_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncCreateFolder (priv->storage_interface,
                           path, type, description,
                           parent_uri,
                           corba_listener, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        (* callback) (storage, E_STORAGE_GENERICERROR, data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (storage);
        g_free (closure);
    }
    CORBA_exception_free (&ev);
}

static void
async_remove_folder (EStorage *storage,
             const char *path,
             EStorageResultCallback callback,
             void *data)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    EFolder *folder;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    struct async_folder_closure *closure;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    folder = e_storage_get_folder (storage, path);
    if (e_folder_get_is_stock (folder)) {
        (* callback) (storage, E_STORAGE_CANTCHANGESTOCKFOLDER, data);
        return;
    }
    if (e_folder_get_physical_uri (folder) == NULL) {
        (* callback) (storage, E_STORAGE_GENERICERROR, data);
        return;
    }

    closure = g_new (struct async_folder_closure, 1);
    closure->callback = callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    listener = bonobo_listener_new (async_folder_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncRemoveFolder (priv->storage_interface,
                           path,
                           e_folder_get_physical_uri (folder),
                           corba_listener, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        (* callback) (storage, E_STORAGE_GENERICERROR, data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (storage);
        g_free (closure);
    }
    CORBA_exception_free (&ev);
}

static void
async_xfer_folder (EStorage *storage,
           const char *source_path,
           const char *destination_path,
           gboolean remove_source,
           EStorageResultCallback callback,
           void *data)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    EFolder *folder;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    struct async_folder_closure *closure;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    folder = e_storage_get_folder (storage, source_path);
    if (e_folder_get_is_stock (folder) && remove_source)
        (* callback) (storage, E_STORAGE_CANTCHANGESTOCKFOLDER, data);

    closure = g_new (struct async_folder_closure, 1);
    closure->callback = callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    listener = bonobo_listener_new (async_folder_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncXferFolder (priv->storage_interface,
                         source_path, destination_path,
                         remove_source, corba_listener, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        (* callback) (storage, E_STORAGE_GENERICERROR, data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (storage);
        g_free (closure);
    }
    CORBA_exception_free (&ev);
}

struct async_open_closure {
    EStorageDiscoveryCallback callback;
    EStorage *storage;
    void *data;
    char *path;
};

static void
async_open_cb (BonoboListener *listener, const char *event_name, 
           const CORBA_any *any, CORBA_Environment *ev,
           gpointer user_data)
{
    struct async_open_closure *orig_closure = user_data, *closure;
    GNOME_Evolution_Storage_Result *corba_result;
    ECorbaStoragePrivate *priv;
    EStorageResult result;
    GList *p;

    corba_result = any->_value;
    result = e_corba_storage_corba_result_to_storage_result (*corba_result);
    bonobo_object_unref (BONOBO_OBJECT (listener));

    priv = E_CORBA_STORAGE (orig_closure->storage)->priv;
    p = priv->pending_opens;
    while (p) {
        closure = p->data;
        if (!strcmp (closure->path, orig_closure->path)) {
            (* closure->callback) (closure->storage, result,
                           closure->path, closure->data);
            if (closure != orig_closure) {
                g_object_unref (orig_closure->storage);
                g_free (closure->path);
                g_free (closure);
            }
            priv->pending_opens = g_list_remove (priv->pending_opens, p->data);
            p = priv->pending_opens;
        } else
            p = p->next;
    }

    g_object_unref (orig_closure->storage);
    g_free (orig_closure->path);
    g_free (orig_closure);
}

static gboolean
async_open_folder_idle (gpointer data)
{
    struct async_open_closure *closure = data, *old_closure;
    EStorage *storage = closure->storage;
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    GList *p;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    for (p = priv->pending_opens; p; p = p->next) {
        old_closure = p->data;
        if (!strcmp (closure->path, old_closure->path)) {
            priv->pending_opens = g_list_prepend (priv->pending_opens, closure);
            return FALSE;
        }
    }

    listener = bonobo_listener_new (async_open_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    priv->pending_opens = g_list_prepend (priv->pending_opens, closure);

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncOpenFolder (priv->storage_interface,
                         closure->path,
                         corba_listener, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        (* closure->callback) (storage, E_STORAGE_GENERICERROR,
                       closure->path, closure->data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (closure->storage);
        g_free (closure->path);
        g_free (closure);

        priv->pending_opens = g_list_delete_link (priv->pending_opens,
                              priv->pending_opens);
    }
    CORBA_exception_free (&ev);

    return FALSE;
}

static void
async_open_folder (EStorage *storage,
           const char *path,
           EStorageDiscoveryCallback callback,
           void *data)
{
    struct async_open_closure *closure;

    closure = g_new (struct async_open_closure, 1);
    closure->callback = callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    closure->path = g_strdup (path);

    g_idle_add (async_open_folder_idle, closure);
}


/* Shared folders.  */

static gboolean
supports_shared_folders (EStorage *storage)
{
    GNOME_Evolution_Storage storage_iface;
    CORBA_boolean has_shared_folders;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    storage_iface = e_corba_storage_get_corba_objref (E_CORBA_STORAGE (storage));
    g_assert (storage_iface != CORBA_OBJECT_NIL);

    has_shared_folders = GNOME_Evolution_Storage__get_hasSharedFolders (storage_iface, &ev);
    if (BONOBO_EX (&ev))
        has_shared_folders = FALSE;

    CORBA_exception_free (&ev);

    return has_shared_folders;
}

static void
async_folder_discovery_cb (BonoboListener *listener,
               const char *event_name, 
               const CORBA_any *any,
               CORBA_Environment *ev,
               gpointer user_data)
{
    struct async_folder_closure *closure = user_data;
    GNOME_Evolution_Storage_FolderResult *corba_result;
    EStorageDiscoveryCallback callback;
    EStorageResult result;
    char *path;

    corba_result = any->_value;
    result = e_corba_storage_corba_result_to_storage_result (corba_result->result);
    if (result == E_STORAGE_OK)
        path = corba_result->path;
    else
        path = NULL;

    callback = (EStorageDiscoveryCallback)closure->callback;
    (* callback) (closure->storage, result, path, closure->data);

    bonobo_object_unref (BONOBO_OBJECT (listener));
    g_object_unref (closure->storage);
    g_free (closure);
}

static void
async_discover_shared_folder (EStorage *storage,
                  const char *owner,
                  const char *folder_name,
                  EStorageDiscoveryCallback callback,
                  void *data)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    struct async_folder_closure *closure;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    closure = g_new (struct async_folder_closure, 1);
    closure->callback = (EStorageResultCallback)callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    listener = bonobo_listener_new (async_folder_discovery_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncDiscoverSharedFolder (priv->storage_interface,
                               owner, folder_name,
                               corba_listener, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        (* callback) (storage, E_STORAGE_GENERICERROR, NULL, data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (storage);
        g_free (closure);
    }
    CORBA_exception_free (&ev);
}

static void
cancel_discover_shared_folder (EStorage *storage,
                   const char *owner,
                   const char *folder_name)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    CORBA_Environment ev;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_cancelDiscoverSharedFolder (priv->storage_interface,
                                owner, folder_name, &ev);
    if (BONOBO_EX (&ev))
        g_warning ("Error invoking cancelDiscoverSharedFolder -- %s", BONOBO_EX_REPOID (&ev));
    CORBA_exception_free (&ev);
}

static void
async_remove_shared_folder (EStorage *storage,
                const char *path,
                EStorageResultCallback callback,
                void *data)
{
    ECorbaStorage *corba_storage;
    ECorbaStoragePrivate *priv;
    BonoboListener *listener;
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;
    struct async_folder_closure *closure;

    corba_storage = E_CORBA_STORAGE (storage);
    priv = corba_storage->priv;

    closure = g_new (struct async_folder_closure, 1);
    closure->callback = callback;
    closure->storage = storage;
    g_object_ref (storage);
    closure->data = data;
    listener = bonobo_listener_new (async_folder_cb, closure);
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_asyncRemoveSharedFolder (priv->storage_interface,
                             path, corba_listener,
                             &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        (* callback) (storage, E_STORAGE_GENERICERROR, data);
        bonobo_object_unref (BONOBO_OBJECT (listener));
        g_object_unref (storage);
        g_free (closure);
    }
    CORBA_exception_free (&ev);
}


static void
corba_class_init (void)
{
    POA_GNOME_Evolution_StorageListener__vepv *vepv;
    POA_GNOME_Evolution_StorageListener__epv *epv;
    PortableServer_ServantBase__epv *base_epv;

    base_epv = g_new0 (PortableServer_ServantBase__epv, 1);
    base_epv->_private    = NULL;
    base_epv->finalize    = NULL;
    base_epv->default_POA = NULL;

    epv = g_new0 (POA_GNOME_Evolution_StorageListener__epv, 1);
    epv->notifyFolderCreated = impl_StorageListener_notifyFolderCreated;
    epv->notifyFolderUpdated = impl_StorageListener_notifyFolderUpdated;
    epv->notifyFolderRemoved = impl_StorageListener_notifyFolderRemoved;
    epv->notifyHasSubfolders = impl_StorageListener_notifyHasSubfolders;

    vepv = &storage_listener_vepv;
    vepv->_base_epv                     = base_epv;
    vepv->GNOME_Evolution_StorageListener_epv = epv;
}

static void
class_init (ECorbaStorageClass *klass)
{
    GObjectClass *object_class;
    EStorageClass *storage_class;

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

    storage_class = E_STORAGE_CLASS (klass);
    storage_class->get_folder                    = get_folder;
    storage_class->async_create_folder           = async_create_folder;
    storage_class->async_remove_folder           = async_remove_folder;
    storage_class->async_xfer_folder             = async_xfer_folder;
    storage_class->async_open_folder             = async_open_folder;
    storage_class->supports_shared_folders       = supports_shared_folders;
    storage_class->async_discover_shared_folder  = async_discover_shared_folder;
    storage_class->cancel_discover_shared_folder = cancel_discover_shared_folder;
    storage_class->async_remove_shared_folder    = async_remove_shared_folder;

    corba_class_init ();

    parent_class = g_type_class_ref(PARENT_TYPE);
}

static void
init (ECorbaStorage *corba_storage)
{
    ECorbaStoragePrivate *priv;

    priv = g_new (ECorbaStoragePrivate, 1);
    priv->storage_interface = CORBA_OBJECT_NIL;
    priv->pending_opens = NULL;

    corba_storage->priv = priv;
}  


/* FIXME: OK to have a boolean construct function?  */
void
e_corba_storage_construct (ECorbaStorage *corba_storage,
               const GNOME_Evolution_Storage storage_interface,
               const char *name)
{
    ECorbaStoragePrivate *priv;
    CORBA_Environment ev;
    EFolder *root_folder;

    g_return_if_fail (corba_storage != NULL);
    g_return_if_fail (E_IS_CORBA_STORAGE (corba_storage));
    g_return_if_fail (storage_interface != CORBA_OBJECT_NIL);
    g_return_if_fail (name != NULL);

    /* FIXME: Need separate name and display name. */
    root_folder = e_folder_new (name, "noselect", "");
    e_storage_construct (E_STORAGE (corba_storage), name, root_folder);

    priv = corba_storage->priv;

    CORBA_exception_init (&ev);

    Bonobo_Unknown_ref (storage_interface, &ev);
    if (ev._major != CORBA_NO_EXCEPTION)
        g_warning ("e_corba_storage_construct() -- Cannot reference Bonobo object");
    else
        priv->storage_interface = CORBA_Object_duplicate (storage_interface, &ev);

    CORBA_exception_free (&ev);

    setup_storage_listener (corba_storage);
}

EStorage *
e_corba_storage_new (const GNOME_Evolution_Storage storage_interface,
             const char *name)
{
    EStorage *new;

    g_return_val_if_fail (storage_interface != CORBA_OBJECT_NIL, NULL);
    g_return_val_if_fail (name != NULL, NULL);

    new = g_object_new (e_corba_storage_get_type (), NULL);

    e_corba_storage_construct (E_CORBA_STORAGE (new),
                   storage_interface, name);

    return new;
}


const GNOME_Evolution_StorageListener
e_corba_storage_get_StorageListener (ECorbaStorage *corba_storage)
{
    g_return_val_if_fail (corba_storage != NULL, NULL);
    g_return_val_if_fail (E_IS_CORBA_STORAGE (corba_storage), NULL);

    return corba_storage->priv->storage_listener_interface;
}

GNOME_Evolution_Storage
e_corba_storage_get_corba_objref (ECorbaStorage *corba_storage)
{
    g_return_val_if_fail (corba_storage != NULL, CORBA_OBJECT_NIL);
    g_return_val_if_fail (E_IS_CORBA_STORAGE (corba_storage), CORBA_OBJECT_NIL);

    return corba_storage->priv->storage_interface;
}


GSList *
e_corba_storage_get_folder_property_items (ECorbaStorage *corba_storage)
{
    GNOME_Evolution_Storage_FolderPropertyItemList *corba_items;
    CORBA_Environment ev;
    GSList *list;
    int i;

    g_return_val_if_fail (E_IS_CORBA_STORAGE (corba_storage), NULL);

    CORBA_exception_init (&ev);

    corba_items = GNOME_Evolution_Storage__get_folderPropertyItems (corba_storage->priv->storage_interface,
                                    &ev);

    if (BONOBO_EX (&ev)) {
        CORBA_exception_free (&ev);
        return NULL;
    }

    list = NULL;
    for (i = 0; i < corba_items->_length; i ++) {
        ECorbaStoragePropertyItem *item;

        item = g_new (ECorbaStoragePropertyItem, 1);
        item->label   = g_strdup (corba_items->_buffer[i].label);
        item->tooltip = g_strdup (corba_items->_buffer[i].tooltip);
        item->icon    = NULL; /* We don't care for now -- FIXME */

        list = g_slist_prepend (list, item);
    }
    list = g_slist_reverse (list);

    CORBA_free (corba_items);
    CORBA_exception_free (&ev);

    return list;
}

void
e_corba_storage_free_property_items_list (GSList *list)
{
    GSList *p;

    for (p = list; p != NULL; p = p->next) {
        ECorbaStoragePropertyItem *item;

        item = (ECorbaStoragePropertyItem *) p->data;

        if (item->icon != NULL)
            g_object_unref (item->icon);
        g_free (item->label);
        g_free (item->tooltip);
        g_free (item);
    }

    g_slist_free (list);
}

void
e_corba_storage_show_folder_properties (ECorbaStorage *corba_storage,
                    const char *path,
                    int property_item_id,
                    GdkWindow *parent_window)
{
    CORBA_Environment ev;

    g_return_if_fail (E_IS_CORBA_STORAGE (corba_storage));
    g_return_if_fail (path != NULL && path[0] == E_PATH_SEPARATOR);

    CORBA_exception_init (&ev);

    GNOME_Evolution_Storage_showFolderProperties (corba_storage->priv->storage_interface,
                              path, property_item_id,
                              GDK_WINDOW_XWINDOW (parent_window),
                              &ev);
    if (BONOBO_EX (&ev))
        g_warning ("Error in Storage::showFolderProperties -- %s", BONOBO_EX_REPOID (&ev));

    CORBA_exception_free (&ev);
}

EStorageResult
e_corba_storage_corba_result_to_storage_result (GNOME_Evolution_Storage_Result corba_result)
{
    switch (corba_result) {
    case GNOME_Evolution_Storage_OK:
        return E_STORAGE_OK;
    case GNOME_Evolution_Storage_UNSUPPORTED_OPERATION:
        return E_STORAGE_UNSUPPORTEDOPERATION;
    case GNOME_Evolution_Storage_UNSUPPORTED_TYPE:
        return E_STORAGE_UNSUPPORTEDTYPE;
    case GNOME_Evolution_Storage_INVALID_URI:
        return E_STORAGE_INVALIDNAME;
    case GNOME_Evolution_Storage_ALREADY_EXISTS:
        return E_STORAGE_EXISTS;
    case GNOME_Evolution_Storage_DOES_NOT_EXIST:
        return E_STORAGE_NOTFOUND;
    case GNOME_Evolution_Storage_PERMISSION_DENIED:
        return E_STORAGE_PERMISSIONDENIED;
    case GNOME_Evolution_Storage_NO_SPACE:
        return E_STORAGE_NOSPACE;
    case GNOME_Evolution_Storage_NOT_EMPTY:
        return E_STORAGE_NOTEMPTY;
    case GNOME_Evolution_Storage_NOT_ONLINE:
        return E_STORAGE_NOTONLINE;
    case GNOME_Evolution_Storage_GENERIC_ERROR:
    default:
        return E_STORAGE_GENERICERROR;
    }
}


E_MAKE_TYPE (e_corba_storage, "ECorbaStorage", ECorbaStorage, class_init, init, PARENT_TYPE)