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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* evolution-importer-client.c
 *
 * Copyright (C) 2000  Ximian, Inc.
 *
 * This program 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.
 *
 * 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: Iain Holmes  <iain@ximian.com>
 * Based on evolution-shell-component-client.c by Ettore Perazzoli
 */

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

#include "evolution-importer-client.h"

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

#include <liboaf/liboaf.h>

#include "GNOME_Evolution_Importer.h"

#define PARENT_TYPE gtk_object_get_type ()
static GtkObjectClass *parent_class = NULL;


static void
destroy (GtkObject *object)
{
    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static void
class_init (EvolutionImporterClientClass *klass)
{
    GtkObjectClass *object_class;

    object_class = GTK_OBJECT_CLASS (klass);
    parent_class = gtk_type_class (PARENT_TYPE);

    object_class->destroy = destroy;
}

static void
init (EvolutionImporterClient *client)
{
}

/**
 * evolution_importer_client_new:
 * @objref: The CORBA_Object to make a client for.
 *
 * Makes a client for @objref. @objref should be an Evolution_Importer.
 * 
 * Returns: A newly created EvolutionImporterClient.
 */
EvolutionImporterClient *
evolution_importer_client_new (const CORBA_Object objref)
{
    EvolutionImporterClient *client;

    g_return_val_if_fail (objref != CORBA_OBJECT_NIL, NULL);

    client = gtk_type_new (evolution_importer_client_get_type ());
    client->objref = objref;

    return client;
}

/**
 * evolution_importer_client_new_from_id:
 * @id: The oafiid of the component to make a client for.
 *
 * Makes a client for the object returned by activating @id.
 * 
 * Returns: A newly created EvolutionImporterClient.
 */
EvolutionImporterClient *
evolution_importer_client_new_from_id (const char *id)
{
    CORBA_Environment ev;
    CORBA_Object objref;

    g_return_val_if_fail (id != NULL, NULL);

    CORBA_exception_init (&ev);
    objref = oaf_activate_from_id ((char *) id, 0, NULL, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        g_warning ("Could not start %s.", id);
        return NULL;
    }

    CORBA_exception_free (&ev);
    if (objref == CORBA_OBJECT_NIL) {
        g_warning ("Could not activate component %s", id);
        return NULL;
    }

    return evolution_importer_client_new (objref);
}

/* API */
/**
 * evolution_importer_client_support_format:
 * @client: The EvolutionImporterClient.
 * @filename: Name of the file to check.
 *
 * Checks whether @client is able to import @filename.
 *
 * Returns: TRUE if @client can import @filename, FALSE otherwise.
 */
gboolean
evolution_importer_client_support_format (EvolutionImporterClient *client,
                      const char *filename)
{
    GNOME_Evolution_Importer corba_importer;
    gboolean result;
    CORBA_Environment ev;

    g_return_val_if_fail (client != NULL, FALSE);
    g_return_val_if_fail (EVOLUTION_IS_IMPORTER_CLIENT (client), FALSE);
    g_return_val_if_fail (filename != NULL, FALSE);

    CORBA_exception_init (&ev);
    corba_importer = client->objref;
    result = GNOME_Evolution_Importer_supportFormat (corba_importer, 
                             filename, &ev);
    CORBA_exception_free (&ev);

    return result;
}

/**
 * evolution_importer_client_load_file:
 * @client: The EvolutionImporterClient.
 * @filename: The file to load.
 * @folderpath: The full path to the folder, or NULL for Inbox.
 *
 * Loads and initialises the importer.
 *
 * Returns: TRUE on sucess, FALSE on failure.
 */
gboolean
evolution_importer_client_load_file (EvolutionImporterClient *client,
                     const char *filename,
                     const char *folderpath)
{
    GNOME_Evolution_Importer corba_importer;
    gboolean result;
    CORBA_Environment ev;

    g_return_val_if_fail (client != NULL, FALSE);
    g_return_val_if_fail (EVOLUTION_IS_IMPORTER_CLIENT (client), FALSE);
    g_return_val_if_fail (filename != NULL, FALSE);

    CORBA_exception_init (&ev);
    corba_importer = client->objref;
    result = GNOME_Evolution_Importer_loadFile (corba_importer,
                            filename,
                            folderpath ? folderpath : "",
                            &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Oh there *WAS* an exception.\nIt was %s",
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return FALSE;
    }
    CORBA_exception_free (&ev);

    return result;
}

/**
 * evolution_importer_client_process_item:
 * @client: The EvolutionImporterClient.
 * @listener: The EvolutionImporterListener.
 *
 * Starts importing the next item in the file. @listener will be notified
 * when the item has finished.
 */
void
evolution_importer_client_process_item (EvolutionImporterClient *client,
                    EvolutionImporterListener *listener)
{
    GNOME_Evolution_Importer corba_importer;
    GNOME_Evolution_ImporterListener corba_listener;
    CORBA_Environment ev;

    g_return_if_fail (client != NULL);
    g_return_if_fail (EVOLUTION_IS_IMPORTER_CLIENT (client));
    g_return_if_fail (listener != NULL);
    g_return_if_fail (EVOLUTION_IS_IMPORTER_LISTENER (listener));

    CORBA_exception_init (&ev);

    corba_importer = client->objref;
    corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (listener));
    GNOME_Evolution_Importer_processItem (corba_importer,
                          corba_listener, &ev);
    CORBA_exception_free (&ev);
}

/**
 * evolution_importer_client_get_error:
 * @client: The EvolutionImporterClient.
 *
 * Gets the error as a string. 
 *
 * Returns: The error as a string. If there is no error NULL is returned. 
 * Importers need not support this method and if so, NULL is also returned.
 */
const char *
evolution_importer_client_get_error (EvolutionImporterClient *client)
{
    GNOME_Evolution_Importer corba_importer;
    CORBA_char *str;
    CORBA_Environment ev;

    g_return_val_if_fail (client != NULL, NULL);
    g_return_val_if_fail (EVOLUTION_IS_IMPORTER_CLIENT (client), NULL);

    corba_importer = client->objref;

    CORBA_exception_init (&ev);
    str = GNOME_Evolution_Importer_getError (corba_importer, &ev);
    
    return str;
}

E_MAKE_TYPE (evolution_importer_client, "EvolutionImporterClient",
         EvolutionImporterClient, class_init, init, PARENT_TYPE)