path: root/mail/component-factory.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* component-factory.c
 *
 * Authors: Ettore Perazzoli <ettore@ximian.com>
 *
 * 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.
 */

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

#include <bonobo/bonobo-generic-factory.h>
#include <gal/widgets/e-gui-utils.h>

#include "camel.h"

#include "Evolution.h"
#include "evolution-storage.h"

#include "folder-browser-factory.h"
#include "evolution-shell-component.h"
#include "evolution-shell-component-dnd.h"
#include "folder-browser.h"
#include "mail.h"       /* YUCK FIXME */
#include "mail-config.h"
#include "mail-tools.h"
#include "mail-ops.h"
#include "mail-offline-handler.h"
#include "mail-local.h"
#include "mail-session.h"
#include "mail-mt.h"
#include "mail-importer.h"
#include "mail-vfolder.h"             /* vfolder_create_storage */

#include "component-factory.h"

#include "mail-send-recv.h"

char *default_drafts_folder_uri;
CamelFolder *drafts_folder = NULL;
char *default_sent_folder_uri;
CamelFolder *sent_folder = NULL;
char *default_outbox_folder_uri;
CamelFolder *outbox_folder = NULL;
char *evolution_dir;

#define COMPONENT_FACTORY_ID "OAFIID:GNOME_Evolution_Mail_ShellComponentFactory"
#define SUMMARY_FACTORY_ID   "OAFIID:GNOME_Evolution_Mail_ExecutiveSummaryComponentFactory"

static BonoboGenericFactory *component_factory = NULL;
static GHashTable *storages_hash;
static EvolutionShellComponent *shell_component;

enum {
    ACCEPTED_DND_TYPE_MESSAGE_RFC822,
    ACCEPTED_DND_TYPE_X_EVOLUTION_MESSAGE,
    ACCEPTED_DND_TYPE_TEXT_URI_LIST,
};

static char *accepted_dnd_types[] = {
    "message/rfc822",
    "x-evolution-message",    /* ...from an evolution message list... */
    "text/uri-list",          /* ...from nautilus... */
    NULL
};

enum {
    EXPORTED_DND_TYPE_TEXT_URI_LIST,
};

static char *exported_dnd_types[] = {
    "text/uri-list",          /* we have to export to nautilus as text/uri-list */
    NULL
};

static const EvolutionShellComponentFolderType folder_types[] = {
    { "mail", "evolution-inbox.png", accepted_dnd_types, exported_dnd_types },
    { "mailstorage", "evolution-inbox.png", NULL, NULL },
    { "vtrash", "evolution-trash.png", NULL, NULL },
    { NULL, NULL, NULL, NULL }
};

/* EvolutionShellComponent methods and signals.  */

static EvolutionShellComponentResult
create_view (EvolutionShellComponent *shell_component,
         const char *physical_uri,
         const char *folder_type,
         BonoboControl **control_return,
         void *closure)
{
    EvolutionShellClient *shell_client;
    GNOME_Evolution_Shell corba_shell;
    BonoboControl *control;
    
    shell_client = evolution_shell_component_get_owner (shell_component);
    corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell_client));

    if (g_strcasecmp (folder_type, "mail") == 0) {
        control = folder_browser_factory_new_control (physical_uri,
                                  corba_shell);
    } else if (g_strcasecmp (folder_type, "mailstorage") == 0) {
        CamelService *store;
        EvolutionStorage *storage;

        store = camel_session_get_service (session, physical_uri,
                           CAMEL_PROVIDER_STORE, NULL);
        if (!store)
            return EVOLUTION_SHELL_COMPONENT_NOTFOUND;
        storage = g_hash_table_lookup (storages_hash, store);
        if (!storage) {
            camel_object_unref (CAMEL_OBJECT (store));
            return EVOLUTION_SHELL_COMPONENT_NOTFOUND;
        }

        if (!gtk_object_get_data (GTK_OBJECT (storage), "connected"))
            mail_scan_subfolders (CAMEL_STORE(store), storage);
        camel_object_unref (CAMEL_OBJECT (store));

        control = folder_browser_factory_new_control ("", corba_shell);
    } else if (g_strcasecmp (folder_type, "vtrash") == 0) {
        control = folder_browser_factory_new_control ("vtrash:file:/", corba_shell);
    } else
        return EVOLUTION_SHELL_COMPONENT_UNSUPPORTEDTYPE;

    if (!control)
        return EVOLUTION_SHELL_COMPONENT_NOTFOUND;

    *control_return = control;
    return EVOLUTION_SHELL_COMPONENT_OK;
}

static void
do_create_folder (char *uri, CamelFolder *folder, void *data)
{
    GNOME_Evolution_ShellComponentListener listener = data;
    CORBA_Environment ev;
    GNOME_Evolution_ShellComponentListener_Result result;

    if (folder)
        result = GNOME_Evolution_ShellComponentListener_OK;
    else
        result = GNOME_Evolution_ShellComponentListener_INVALID_URI;

    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellComponentListener_notifyResult (listener, result, &ev);
    CORBA_Object_release (listener, &ev);
    CORBA_exception_free (&ev);
}

static void
create_folder (EvolutionShellComponent *shell_component,
           const char *physical_uri,
           const char *type,
           const GNOME_Evolution_ShellComponentListener listener,
           void *closure)
{
    char *uri;
    CORBA_Environment ev;
    
    CORBA_exception_init (&ev);
    if (!strcmp (type, "mail")) {
        /* This makes the uri start with mbox://file://, which
           looks silly but turns into a CamelURL that has
           url->provider of "mbox" */
        uri = g_strdup_printf ("mbox://%s", physical_uri);
        mail_create_folder (uri, do_create_folder, CORBA_Object_duplicate (listener, &ev));
        GNOME_Evolution_ShellComponentListener_notifyResult (listener,
                                     GNOME_Evolution_ShellComponentListener_OK, &ev);
                                     
    } else {
        GNOME_Evolution_ShellComponentListener_notifyResult (
            listener, GNOME_Evolution_ShellComponentListener_UNSUPPORTED_TYPE, &ev);
    }
    CORBA_exception_free (&ev);
}

static void
do_remove_folder (char *uri, gboolean removed, void *data)
{
    GNOME_Evolution_ShellComponentListener listener = data;
    GNOME_Evolution_ShellComponentListener_Result result;
    CORBA_Environment ev;
    
    if (removed)
        result = GNOME_Evolution_ShellComponentListener_OK;
    else
        result = GNOME_Evolution_ShellComponentListener_INVALID_URI;
    
    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellComponentListener_notifyResult (listener, result, &ev);
    CORBA_Object_release (listener, &ev);
    CORBA_exception_free (&ev);
}

static void
remove_folder (EvolutionShellComponent *shell_component,
           const char *physical_uri,
           const GNOME_Evolution_ShellComponentListener listener,
           void *closure)
{
    CORBA_Environment ev;
    
    CORBA_exception_init (&ev);

    mail_remove_folder (physical_uri, do_remove_folder, CORBA_Object_duplicate (listener, &ev));
    GNOME_Evolution_ShellComponentListener_notifyResult (listener,
                                 GNOME_Evolution_ShellComponentListener_OK, &ev);
    
    CORBA_exception_free (&ev);
}

static void
do_xfer_folder (char *src_uri, char *dest_uri, gboolean remove_source, CamelFolder *dest_folder, void *data)
{
    GNOME_Evolution_ShellComponentListener listener = data;
    GNOME_Evolution_ShellComponentListener_Result result;
    CORBA_Environment ev;
    
    if (dest_folder)
        result = GNOME_Evolution_ShellComponentListener_OK;
    else
        result = GNOME_Evolution_ShellComponentListener_INVALID_URI;
    
    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellComponentListener_notifyResult (listener, result, &ev);
    CORBA_Object_release (listener, &ev);
    CORBA_exception_free (&ev);
}

static void
xfer_folder (EvolutionShellComponent *shell_component,
         const char *source_physical_uri,
         const char *destination_physical_uri,
         gboolean remove_source,
         const GNOME_Evolution_ShellComponentListener listener,
         void *closure)
{
    CORBA_Environment ev;
    
    CORBA_exception_init (&ev);
    mail_xfer_folder (source_physical_uri, destination_physical_uri, remove_source, do_xfer_folder,
              CORBA_Object_duplicate (listener, &ev));
    GNOME_Evolution_ShellComponentListener_notifyResult (listener,
                                 GNOME_Evolution_ShellComponentListener_OK, &ev);
    CORBA_exception_free (&ev);
}

static char *
get_dnd_selection (EvolutionShellComponent *shell_component,
           const char *physical_uri,
           int type,
           int *format_return,
           const char **selection_return,
           int *selection_length_return,
           void *closure)
{
    g_print ("should get dnd selection for %s\n", physical_uri);
    
    return NULL;
}

/* Destination side DnD */
static CORBA_boolean
destination_folder_handle_motion (EvolutionShellComponentDndDestinationFolder *folder,
                  const char *physical_uri,
                  const GNOME_Evolution_ShellComponentDnd_DestinationFolder_Context *destination_context,
                  GNOME_Evolution_ShellComponentDnd_Action *suggested_action_return,
                  gpointer user_data)
{
    g_print ("in destination_folder_handle_motion (%s)\n", physical_uri);
    
    *suggested_action_return = GNOME_Evolution_ShellComponentDnd_ACTION_MOVE;
    
    return TRUE;
}

static void
message_rfc822_dnd (CamelFolder *dest, CamelStream *stream, CamelException *ex)
{
    CamelMimeParser *mp;
    
    mp = camel_mime_parser_new ();
    camel_mime_parser_scan_from (mp, TRUE);
    camel_mime_parser_init_with_stream (mp, stream);
    
    while (camel_mime_parser_step (mp, 0, 0) == HSCAN_FROM) {
        CamelMessageInfo *info;
        CamelMimeMessage *msg;
        
        msg = camel_mime_message_new ();
        if (camel_mime_part_construct_from_parser (CAMEL_MIME_PART (msg), mp) == -1) {
            camel_object_unref (CAMEL_OBJECT (msg));
            break;
        }
        
        /* append the message to the folder... */
        info = g_new0 (CamelMessageInfo, 1);
        camel_folder_append_message (dest, msg, info, ex);
        camel_object_unref (CAMEL_OBJECT (msg));
        
        if (camel_exception_is_set (ex))
            break;
        
        /* skip over the FROM_END state */
        camel_mime_parser_step (mp, 0, 0);
    }
    
    camel_object_unref (CAMEL_OBJECT (mp));
}

static CORBA_boolean
destination_folder_handle_drop (EvolutionShellComponentDndDestinationFolder *folder,
                const char *physical_uri,
                const GNOME_Evolution_ShellComponentDnd_DestinationFolder_Context *destination_context,
                const GNOME_Evolution_ShellComponentDnd_Action action,
                const GNOME_Evolution_ShellComponentDnd_Data *data,
                gpointer user_data)
{
    char *url, *name, *in, *inptr, *inend;
    gboolean retval = FALSE;
    CamelFolder *source;
    CamelStream *stream;
    CamelException ex;
    GPtrArray *uids;
    CamelURL *uri;
    int type, fd;
    
    if (action == GNOME_Evolution_ShellComponentDnd_ACTION_LINK)
        return FALSE; /* we can't create links */
    
    g_print ("in destination_folder_handle_drop (%s)\n", physical_uri);
    
    for (type = 0; accepted_dnd_types[type]; type++)
        if (!strcmp (destination_context->dndType, accepted_dnd_types[type]))
            break;
    
    camel_exception_init (&ex);
    
    switch (type) {
    case ACCEPTED_DND_TYPE_TEXT_URI_LIST:
        source = mail_tool_uri_to_folder (physical_uri, NULL);
        if (!source)
            return FALSE;
        
        url = g_strndup (data->bytes._buffer, data->bytes._length);
        inend = strchr (url, '\n');
        if (inend)
            *inend = '\0';
        
        /* get the path component */
        g_strstrip (url);
        uri = camel_url_new (url, NULL);
        g_free (url);
        url = uri->path;
        uri->path = NULL;
        camel_url_free (uri);
        
        fd = open (url, O_RDONLY);
        if (fd == -1) {
            g_free (url);
            return FALSE;
        }
        
        stream = camel_stream_fs_new_with_fd (fd);
        message_rfc822_dnd (source, stream, &ex);
        camel_object_unref (CAMEL_OBJECT (stream));
        camel_object_unref (CAMEL_OBJECT (source));
        
        retval = !camel_exception_is_set (&ex);
        
        if (action == GNOME_Evolution_ShellComponentDnd_ACTION_MOVE && retval)
            unlink (url);
        
        g_free (url);
        break;
    case ACCEPTED_DND_TYPE_MESSAGE_RFC822:
        source = mail_tool_uri_to_folder (physical_uri, NULL);
        if (!source)
            return FALSE;
        
        /* write the message(s) out to a CamelStream so we can use it */
        stream = camel_stream_mem_new ();
        camel_stream_write (stream, data->bytes._buffer, data->bytes._length);
        camel_stream_reset (stream);
        
        message_rfc822_dnd (source, stream, &ex);
        camel_object_unref (CAMEL_OBJECT (stream));
        camel_object_unref (CAMEL_OBJECT (source));
        break;
    case ACCEPTED_DND_TYPE_X_EVOLUTION_MESSAGE:
        /* format: "url folder_name uid1\0uid2\0uid3\0...\0uidn" */
        
        in = data->bytes._buffer;
        inend = in + data->bytes._length;
        
        inptr = strchr (in, ' ');
        url = g_strndup (in, inptr - in);
        
        name = inptr + 1;
        inptr = strchr (name, ' ');
        name = g_strndup (name, inptr - name);
        
        source = mail_tool_get_folder_from_urlname (url, name, 0, NULL);
        g_free (name);
        g_free (url);
        
        if (!source)
            return FALSE;
        
        /* split the uids */
        inptr++;
        uids = g_ptr_array_new ();
        while (inptr < inend) {
            char *start = inptr;
            
            while (inptr < inend && *inptr)
                inptr++;
            
            g_ptr_array_add (uids, g_strndup (start, inptr - start));
            inptr++;
        }
        
        mail_do_transfer_messages (source, uids,
                       action == GNOME_Evolution_ShellComponentDnd_ACTION_MOVE,
                       physical_uri);
        
        camel_object_unref (CAMEL_OBJECT (source));
        break;
    default:
        break;
    }
    
    camel_exception_clear (&ex);
    
    return retval;
}


static struct {
    char *name, **uri;
    CamelFolder **folder;
} standard_folders[] = {
    { "Drafts", &default_drafts_folder_uri, &drafts_folder },
    { "Outbox", &default_outbox_folder_uri, &outbox_folder },
    { "Sent", &default_sent_folder_uri, &sent_folder },
};

static void
unref_standard_folders (void)
{
    int i;
    
    for (i = 0; i < sizeof (standard_folders) / sizeof (standard_folders[0]); i++) {
        if (standard_folders[i].folder)
            camel_object_unref (CAMEL_OBJECT (*standard_folders[i].folder));
    }
}

static void
got_folder (char *uri, CamelFolder *folder, void *data)
{
    CamelFolder **fp = data;
    
    if (folder) {
        *fp = folder;
        camel_object_ref (CAMEL_OBJECT (folder));
    }
}

static void
owner_set_cb (EvolutionShellComponent *shell_component,
          EvolutionShellClient *shell_client,
          const char *evolution_homedir,
          gpointer user_data)
{
    GNOME_Evolution_Shell corba_shell;
    const GSList *accounts;
#ifdef ENABLE_NNTP
    const GSList *news;
#endif
    int i;

    g_print ("evolution-mail: Yeeeh! We have an owner!\n"); /* FIXME */

    evolution_dir = g_strdup (evolution_homedir);
    mail_session_init ();
    
    mail_config_init ();
    
    storages_hash = g_hash_table_new (NULL, NULL);
    
    vfolder_create_storage (shell_component);

    corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell_client));
    
    accounts = mail_config_get_accounts ();
    mail_load_storages (corba_shell, accounts, TRUE);
    
#ifdef ENABLE_NNTP
    news = mail_config_get_news ();
    mail_load_storages (corba_shell, news, FALSE);
#endif

    mail_local_storage_startup (shell_client, evolution_dir);
    mail_importer_init (shell_client);
    
    for (i = 0; i < sizeof (standard_folders) / sizeof (standard_folders[0]); i++) {
        *standard_folders[i].uri = g_strdup_printf ("file://%s/local/%s", evolution_dir, standard_folders[i].name);
        mail_msg_wait (mail_get_folder (*standard_folders[i].uri, got_folder, standard_folders[i].folder));
    }
    
    mail_session_enable_interaction (TRUE);
    
    mail_autoreceive_setup ();
}

static void
free_storage (gpointer service, gpointer storage, gpointer data)
{
    camel_service_disconnect (CAMEL_SERVICE (service), TRUE, NULL);
    camel_object_unref (CAMEL_OBJECT (service));
    bonobo_object_unref (BONOBO_OBJECT (storage));
}

static gboolean
idle_quit (gpointer user_data)
{
    if (e_list_length (folder_browser_factory_get_control_list ()))
        return TRUE;

    bonobo_object_unref (BONOBO_OBJECT (component_factory));
    g_hash_table_foreach (storages_hash, free_storage, NULL);
    g_hash_table_destroy (storages_hash);

    gtk_main_quit ();

    return FALSE;
}   

static void
owner_unset_cb (EvolutionShellComponent *shell_component, gpointer user_data)
{
    unref_standard_folders ();
    mail_importer_uninit ();
    
    g_idle_add_full (G_PRIORITY_LOW, idle_quit, NULL, NULL);
}

static void
debug_cb (EvolutionShellComponent *shell_component, gpointer user_data)
{
    extern gboolean camel_verbose_debug;

    camel_verbose_debug = 1;
}

static BonoboObject *
component_fn (BonoboGenericFactory *factory, void *closure)
{
    EvolutionShellComponentDndDestinationFolder *destination_interface;
    MailOfflineHandler *offline_handler;
    
    shell_component = evolution_shell_component_new (folder_types,
                             create_view,
                             create_folder,
                             remove_folder,
                             xfer_folder,
                             NULL, /* populate_folder_context_menu_fn */
                             get_dnd_selection,
                             NULL);
    
    destination_interface = evolution_shell_component_dnd_destination_folder_new (destination_folder_handle_motion,
                                              destination_folder_handle_drop,
                                              shell_component);
    
    bonobo_object_add_interface (BONOBO_OBJECT (shell_component),
                     BONOBO_OBJECT (destination_interface));
    
    gtk_signal_connect (GTK_OBJECT (shell_component), "owner_set",
                GTK_SIGNAL_FUNC (owner_set_cb), NULL);
    gtk_signal_connect (GTK_OBJECT (shell_component), "owner_unset",
                GTK_SIGNAL_FUNC (owner_unset_cb), NULL);
    gtk_signal_connect (GTK_OBJECT (shell_component), "debug",
                GTK_SIGNAL_FUNC (debug_cb), NULL);
    gtk_signal_connect (GTK_OBJECT (shell_component), "destroy",
                GTK_SIGNAL_FUNC (owner_unset_cb), NULL);
    
    offline_handler = mail_offline_handler_new ();
    bonobo_object_add_interface (BONOBO_OBJECT (shell_component), BONOBO_OBJECT (offline_handler));
    
    return BONOBO_OBJECT (shell_component);
}

void
component_factory_init (void)
{
    component_factory = bonobo_generic_factory_new (COMPONENT_FACTORY_ID,
                            component_fn, NULL);

    evolution_mail_config_factory_init ();
    evolution_folder_info_factory_init ();

    if (component_factory == NULL) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize Evolution's mail component."));
        exit (1);
    }
}

static int
storage_create_folder (EvolutionStorage *storage,
               const char *path,
               const char *type,
               const char *description,
               const char *parent_physical_uri,
               gpointer user_data)
{
    CamelStore *store = user_data;
    char *prefix, *name;
    CamelURL *url;
    CamelException ex;
    CamelFolderInfo *fi;

    if (strcmp (type, "mail") != 0)
        return EVOLUTION_STORAGE_ERROR_UNSUPPORTED_TYPE;

    name = strrchr (path, '/');
    if (!name++)
        return EVOLUTION_STORAGE_ERROR_INVALID_URI;
    
    camel_exception_init (&ex);
    if (*parent_physical_uri) {
        url = camel_url_new (parent_physical_uri, NULL);
        if (!url)
            return EVOLUTION_STORAGE_ERROR_INVALID_URI;
        
        fi = camel_store_create_folder (store, url->path + 1, name, &ex);
        camel_url_free (url);
    } else
        fi = camel_store_create_folder (store, NULL, name, &ex);
    
    if (camel_exception_is_set (&ex)) {
        /* FIXME: do better than this */
        camel_exception_clear (&ex);
        return EVOLUTION_STORAGE_ERROR_INVALID_URI;
    }
    
    if (camel_store_supports_subscriptions (store))
        camel_store_subscribe_folder (store, fi->full_name, NULL);
    
    prefix = g_strndup (path, name - path - 1);
    folder_created (store, prefix, fi);
    g_free (prefix);
    
    camel_store_free_folder_info (store, fi);
    
    return EVOLUTION_STORAGE_OK;
}

static int
storage_remove_folder (EvolutionStorage *storage,
               const char *path,
               const char *physical_uri,
               gpointer user_data)
{
    CamelStore *store = user_data;
    CamelURL *url = NULL;
    CamelFolderInfo *fi;
    CamelException ex;
    
    g_warning ("storage_remove_folder: path=\"%s\"; uri=\"%s\"", path, physical_uri);
    
    if (*physical_uri) {
        url = camel_url_new (physical_uri, NULL);
        if (!url)
            return EVOLUTION_STORAGE_ERROR_INVALID_URI;
    } else {
        if (!*path)
            return EVOLUTION_STORAGE_ERROR_INVALID_URI;
    }
    
    camel_exception_init (&ex);
    fi = camel_store_get_folder_info (store, url ? url->path + 1 : path + 1,
                      CAMEL_STORE_FOLDER_INFO_FAST, &ex);
    if (url)
        camel_url_free (url);
    if (camel_exception_is_set (&ex))
        goto exception;
    
    camel_store_delete_folder (store, fi->full_name, &ex);
    if (camel_exception_is_set (&ex))
        goto exception;
    
    if (camel_store_supports_subscriptions (store))
        camel_store_unsubscribe_folder (store, fi->full_name, NULL);
    
    folder_deleted (store, fi);
    
    camel_store_free_folder_info (store, fi);
    
    return EVOLUTION_STORAGE_OK;
    
 exception:
    /* FIXME: do better than this... */
    
    if (fi)
        camel_store_free_folder_info (store, fi);
    
    return EVOLUTION_STORAGE_ERROR_INVALID_URI;
}

static void
add_storage (const char *name, const char *uri, CamelService *store,
         GNOME_Evolution_Shell corba_shell, CamelException *ex)
{
    EvolutionStorage *storage;
    EvolutionStorageResult res;
    
    storage = evolution_storage_new (name, uri, "mailstorage");
    gtk_signal_connect (GTK_OBJECT (storage), "create_folder",
                GTK_SIGNAL_FUNC (storage_create_folder),
                store);
    gtk_signal_connect (GTK_OBJECT (storage), "remove_folder",
                GTK_SIGNAL_FUNC (storage_remove_folder),
                store);
    
    res = evolution_storage_register_on_shell (storage, corba_shell);
    
    switch (res) {
    case EVOLUTION_STORAGE_OK:
        mail_hash_storage (store, storage);
        mail_scan_subfolders (CAMEL_STORE (store), storage);
        /* falllll */
    case EVOLUTION_STORAGE_ERROR_ALREADYREGISTERED:
    case EVOLUTION_STORAGE_ERROR_EXISTS:
        return;
    default:
        camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
                     _("Cannot register storage with shell"));
        break;
    }
}


/* FIXME: 'is_account_data' is an ugly hack, if we remove support for NNTP we can take it out -- fejj */
void
mail_load_storages (GNOME_Evolution_Shell shell, const GSList *sources, gboolean is_account_data)
{
    CamelException ex;
    const GSList *iter;
    
    camel_exception_init (&ex);
    
    /* Load each service (don't connect!). Check its provider and
     * see if this belongs in the shell's folder list. If so, add
     * it.
     */
    
    for (iter = sources; iter; iter = iter->next) {
        const MailConfigAccount *account = NULL;
        const MailConfigService *service = NULL;
        CamelService *store;
        CamelProvider *prov;
        char *name;
        
        if (is_account_data) {
            account = iter->data;
            service = account->source;
        } else {
            service = iter->data;
        }
        
        if (service->url == NULL || service->url[0] == '\0')
            continue;
        
        prov = camel_session_get_provider (session, service->url, &ex);
        if (prov == NULL) {
            /* FIXME: real error dialog */
            g_warning ("couldn't get service %s: %s\n", service->url,
                   camel_exception_get_description (&ex));
            camel_exception_clear (&ex);
            continue;
        }
        
        /* FIXME: this case is ambiguous for things like the
         * mbox provider, which can really be a spool
         * (/var/spool/mail/user) or a storage (~/mail/, eg).
         * That issue can't be resolved on the provider level
         * -- it's a per-URL problem.
         *  MPZ Added a hack to let spool protocol through temporarily ...
         */
        if ((!(prov->flags & CAMEL_PROVIDER_IS_STORAGE) ||
             !(prov->flags & CAMEL_PROVIDER_IS_REMOTE))
            && !((strcmp(prov->protocol, "spool") == 0)
             || strcmp(prov->protocol, "maildir") == 0))
            continue;
        
        store = camel_session_get_service (session, service->url,
                           CAMEL_PROVIDER_STORE, &ex);
        if (store == NULL) {
            /* FIXME: real error dialog */
            g_warning ("couldn't get service %s: %s\n", service->url,
                   camel_exception_get_description (&ex));
            camel_exception_clear (&ex);
            continue;
        }
        
        if (is_account_data)
            name = g_strdup (account->name);
        else
            name = camel_service_get_name (store, TRUE);
        
        add_storage (name, service->url, store, shell, &ex);
        g_free (name);
        
        if (camel_exception_is_set (&ex)) {
            /* FIXME: real error dialog */
            g_warning ("Cannot load storage: %s",
                   camel_exception_get_description (&ex));
            camel_exception_clear (&ex);
        }
        
        camel_object_unref (CAMEL_OBJECT (store));
    }
}

void
mail_hash_storage (CamelService *store, EvolutionStorage *storage)
{
    camel_object_ref (CAMEL_OBJECT (store));
    g_hash_table_insert (storages_hash, store, storage);
}

EvolutionStorage*
mail_lookup_storage (CamelStore *store)
{
    EvolutionStorage *storage;
    
    /* Because the storages_hash holds a reference to each store
     * used as a key in it, none of them will ever be gc'ed, meaning
     * any call to camel_session_get_{service,store} with the same
     * URL will always return the same object. So this works.
     */
    
    storage = g_hash_table_lookup (storages_hash, store);
    if (storage)
        gtk_object_ref (GTK_OBJECT (storage));
    
    return storage;
}

void
mail_remove_storage (CamelStore *store)
{
    EvolutionStorage *storage;
    EvolutionShellClient *shell_client;
    GNOME_Evolution_Shell corba_shell;
    
    /* Because the storages_hash holds a reference to each store
     * used as a key in it, none of them will ever be gc'ed, meaning
     * any call to camel_session_get_{service,store} with the same
     * URL will always return the same object. So this works.
     */

    storage = g_hash_table_lookup (storages_hash, store);
    g_hash_table_remove (storages_hash, store);
    
    shell_client = evolution_shell_component_get_owner (shell_component);
    corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell_client));

    evolution_storage_deregister_on_shell (storage, corba_shell);
    
    camel_service_disconnect (CAMEL_SERVICE (store), TRUE, NULL);
    camel_object_unref (CAMEL_OBJECT (store));
}

int
mail_storages_count (void)
{
    return g_hash_table_size (storages_hash);
}

void
mail_storages_foreach (GHFunc func, gpointer data)
{
    g_hash_table_foreach (storages_hash, func, data);
}