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/* -*- 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 "evolution-wizard.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 "mail-folder-cache.h"

#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;

EvolutionShellClient *global_shell_client = NULL;

#define COMPONENT_ID        "OAFIID:GNOME_Evolution_Mail_ShellComponent"
#define SUMMARY_FACTORY_ID  "OAFIID:GNOME_Evolution_Mail_ExecutiveSummaryComponentFactory"

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", N_("Mail"), N_("Folder containing mail"), TRUE, accepted_dnd_types, exported_dnd_types },
    { "mailstorage", "evolution-inbox.png", "Mailstorage", N_("Mail storage folder (internal)"), FALSE, NULL, NULL },
    { "vtrash", "evolution-trash.png", N_("Virtual Trash"), N_("Virtual Trash folder"), FALSE, accepted_dnd_types, exported_dnd_types },
    { NULL, NULL, NULL, NULL, FALSE, NULL, NULL }
};

static const char *schema_types[] = {
    "mailto",
    NULL
};

/* EvolutionShellComponent methods and signals.  */

static void
storage_activate (BonoboControl *control, gboolean activate,
          const char *physical_uri)
{
    CamelService *store;
    EvolutionStorage *storage;
    CamelException ex;

    if (!activate)
        return;

    camel_exception_init (&ex);
    store = camel_session_get_service (session, physical_uri,
                       CAMEL_PROVIDER_STORE, &ex);
    if (!store) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot connect to store: %s"),
              camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
        return;
    }
    camel_exception_clear (&ex);

    storage = g_hash_table_lookup (storages_hash, store);
    if (storage &&
        !gtk_object_get_data (GTK_OBJECT (storage), "connected")) {
        mail_note_store (CAMEL_STORE(store), storage,
                 CORBA_OBJECT_NIL, NULL, NULL);
    }
    camel_object_unref (CAMEL_OBJECT (store));
}   

static BonoboControl *
create_noselect_control (void)
{
    GtkWidget *label;

    label = gtk_label_new (_("This folder cannot contain messages."));
    gtk_widget_show (label);
    return bonobo_control_new (label);
}

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")) {
        const char *noselect;
        CamelURL *url;
        
        url = camel_url_new (physical_uri, NULL);
        noselect = url ? camel_url_get_param (url, "noselect") : NULL;
        if (noselect && !g_strcasecmp (noselect, "yes"))
            control = create_noselect_control ();
        else
            control = folder_browser_factory_new_control (physical_uri,
                                      corba_shell);
        camel_url_free (url);
    } else if (!g_strcasecmp (folder_type, "mailstorage")) {
        char *uri_dup = g_strdup (physical_uri);

        control = create_noselect_control ();
        gtk_object_set_data_full (GTK_OBJECT (control), "physical_uri",
                      uri_dup, g_free);
        gtk_signal_connect (GTK_OBJECT (control), "activate",
                    storage_activate, uri_dup);
    } else if (!g_strcasecmp (folder_type, "vtrash")) {
        if (!g_strncasecmp (physical_uri, "file:", 5))
            control = folder_browser_factory_new_control ("vtrash:file:/", corba_shell);
        else
            control = folder_browser_factory_new_control (physical_uri, 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
create_folder_done (char *uri, CamelFolder *folder, void *data)
{
    GNOME_Evolution_ShellComponentListener listener = data;
    GNOME_Evolution_ShellComponentListener_Result result;
    CORBA_Environment ev;

    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)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    
    if (!strcmp (type, "mail")) {
        mail_get_folder (physical_uri, CAMEL_STORE_FOLDER_CREATE, create_folder_done,
                 CORBA_Object_duplicate (listener, &ev), mail_thread_new);
    } else {
        GNOME_Evolution_ShellComponentListener_notifyResult (
            listener, GNOME_Evolution_ShellComponentListener_UNSUPPORTED_TYPE, &ev);
    }

    CORBA_exception_free (&ev);
}

static void
remove_folder_done (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 char *type,
           const GNOME_Evolution_ShellComponentListener listener,
           void *closure)
{
    CORBA_Environment ev;
    
    CORBA_exception_init (&ev);
    
    if (strcmp (type, "mail") != 0) {
        GNOME_Evolution_ShellComponentListener_notifyResult (listener,
                                     GNOME_Evolution_ShellComponentListener_UNSUPPORTED_TYPE, &ev);
        CORBA_exception_free (&ev);
        return;
    }
    
    mail_remove_folder (physical_uri, remove_folder_done, CORBA_Object_duplicate (listener, &ev));
    CORBA_exception_free (&ev);
}

typedef struct _xfer_folder_data {
    GNOME_Evolution_ShellComponentListener listener;
    gboolean remove_source;
    char *source_uri;
} xfer_folder_data;

static void
xfer_folder_done (gboolean ok, void *data)
{
    xfer_folder_data *xfd = (xfer_folder_data *)data;
    GNOME_Evolution_ShellComponentListener listener = xfd->listener;
    GNOME_Evolution_ShellComponentListener_Result result;
    CORBA_Environment ev;

    if (xfd->remove_source && ok) {
        mail_remove_folder (xfd->source_uri, remove_folder_done, xfd->listener);
    } else {
        if (ok)
            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);
    }

    g_free (xfd->source_uri);
    g_free (xfd);
}

static void
xfer_folder (EvolutionShellComponent *shell_component,
         const char *source_physical_uri,
         const char *destination_physical_uri,
         const char *type,
         gboolean remove_source,
         const GNOME_Evolution_ShellComponentListener listener,
         void *closure)
{
    CORBA_Environment ev;
    const char *noselect;
    CamelFolder *source;
    CamelException ex;
    GPtrArray *uids;
    CamelURL *url;

    url = camel_url_new (destination_physical_uri, NULL);
    noselect = url ? camel_url_get_param (url, "noselect") : NULL;
    
    if (noselect && !g_strcasecmp (noselect, "yes")) {
        camel_url_free (url);
        GNOME_Evolution_ShellComponentListener_notifyResult (listener, 
                                     GNOME_Evolution_ShellComponentListener_UNSUPPORTED_OPERATION, &ev);
        return;
    }
    
    camel_url_free (url);
    
    if (strcmp (type, "mail") != 0) {
        GNOME_Evolution_ShellComponentListener_notifyResult (listener,
                                     GNOME_Evolution_ShellComponentListener_UNSUPPORTED_TYPE, &ev);
        return;
    }

    camel_exception_init (&ex);
    source = mail_tool_uri_to_folder (source_physical_uri, 0, &ex);
    camel_exception_clear (&ex);
    
    CORBA_exception_init (&ev);
    if (source) {
        xfer_folder_data *xfd;

        xfd = g_new0 (xfer_folder_data, 1);
        xfd->remove_source = remove_source;
        xfd->source_uri = g_strdup (source_physical_uri);
        xfd->listener = CORBA_Object_duplicate (listener, &ev);

        uids = camel_folder_get_uids (source);
        mail_transfer_messages (source, uids, remove_source, destination_physical_uri,
                    CAMEL_STORE_FOLDER_CREATE, xfer_folder_done, xfd);
        camel_object_unref (CAMEL_OBJECT (source));
    } else
        GNOME_Evolution_ShellComponentListener_notifyResult (listener, GNOME_Evolution_ShellComponentListener_INVALID_URI, &ev);
    CORBA_exception_free (&ev);
}

#if 0
static void
populate_folder_context_menu (EvolutionShellComponent *shell_component,
                  BonoboUIComponent *uic,
                  const char *physical_uri,
                  const char *type,
                  void *closure)
{
#ifdef TRANSLATORS_ONLY
    static char popup_xml_i18n[] = {N_("Properties..."), N_("Change this folder's properties")};
#endif
    static char popup_xml[] =
        "<menuitem name=\"ChangeFolderProperties\" verb=\"ChangeFolderProperties\""
        "          _label=\"Properties...\" _tip=\"Change this folder's properties\"/>";

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

    bonobo_ui_component_set_translate (uic, EVOLUTION_SHELL_COMPONENT_POPUP_PLACEHOLDER,
                       popup_xml, NULL);
}
#endif

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)
{
    const char *noselect;
    CamelURL *url;
    
    g_print ("in destination_folder_handle_motion (%s)\n", physical_uri);
    
    url = camel_url_new (physical_uri, NULL);
    noselect = camel_url_get_param (url, "noselect");
    
    if (noselect && !g_strcasecmp (noselect, "yes"))
        /* uh, no way to say "illegal" */
        *suggested_action_return = GNOME_Evolution_ShellComponentDnd_ACTION_DEFAULT;
    else
        *suggested_action_return = GNOME_Evolution_ShellComponentDnd_ACTION_MOVE;
    
    camel_url_free (url);
    
    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 *dest_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 *tmp, *url, **urls, *in, *inptr, *inend;
    gboolean retval = FALSE;
    const char *noselect;
    CamelFolder *folder;
    CamelStream *stream;
    CamelException ex;
    GPtrArray *uids;
    CamelURL *uri;
    int i, type, fd;
    
    if (action == GNOME_Evolution_ShellComponentDnd_ACTION_LINK)
        return FALSE; /* we can't create links */
    
    /* this means the drag was cancelled */
    if (!data->bytes._buffer || data->bytes._length == -1)
        return FALSE;
    
    uri = camel_url_new (physical_uri, NULL);
    noselect = uri ? camel_url_get_param (uri, "noselect") : NULL;
    if (noselect && !g_strcasecmp (noselect, "yes")) {
        camel_url_free (uri);
        return FALSE;
    }
    camel_url_free (uri);
    
    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:
        folder = mail_tool_uri_to_folder (physical_uri, 0, NULL);
        if (!folder)
            return FALSE;
        
        tmp = g_strndup (data->bytes._buffer, data->bytes._length);
        urls = g_strsplit (tmp, "\n", 0);
        g_free (tmp);
        
        retval = TRUE;
        for (i = 0; urls[i] != NULL && retval; i++) {
            /* get the path component */
            url = g_strstrip (urls[i]);
            
            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);
                /* FIXME: okay, so what do we do in this case? */
                continue;
            }
            
            stream = camel_stream_fs_new_with_fd (fd);
            message_rfc822_dnd (folder, stream, &ex);
            camel_object_unref (CAMEL_OBJECT (stream));
            camel_object_unref (CAMEL_OBJECT (folder));
            
            retval = !camel_exception_is_set (&ex);
            
            if (action == GNOME_Evolution_ShellComponentDnd_ACTION_MOVE && retval)
                unlink (url);
            
            g_free (url);
        }
        
        g_free (urls);
        break;
    case ACCEPTED_DND_TYPE_MESSAGE_RFC822:
        folder = mail_tool_uri_to_folder (physical_uri, 0, &ex);
        if (!folder) {
            camel_exception_clear (&ex);
            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 (folder, stream, &ex);
        camel_object_unref (CAMEL_OBJECT (stream));
        camel_object_unref (CAMEL_OBJECT (folder));
        break;
    case ACCEPTED_DND_TYPE_X_EVOLUTION_MESSAGE:
        /* format: "uri uid1\0uid2\0uid3\0...\0uidn" */
        
        in = data->bytes._buffer;
        inend = in + data->bytes._length;
        
        inptr = strchr (in, ' ');
        url = g_strndup (in, inptr - in);
        
        folder = mail_tool_uri_to_folder (url, 0, &ex);
        g_free (url);
        
        if (!folder) {
            camel_exception_clear (&ex);
            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_transfer_messages (folder, uids,
                    action == GNOME_Evolution_ShellComponentDnd_ACTION_MOVE,
                    physical_uri, 0, NULL, NULL);
        
        camel_object_unref (CAMEL_OBJECT (folder));
        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) {
            CamelFolder *folder = *standard_folders[i].folder;

            *standard_folders[i].folder = NULL;
            camel_object_unref (CAMEL_OBJECT (folder));
        }
    }
}

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

        camel_object_ref(CAMEL_OBJECT (folder));

        /* emit a changed event, this is a little hack so that the folderinfo cache
           will update knowing whether this is the outbox_folder or not, etc */
        if (folder == outbox_folder) {
            CamelFolderChangeInfo *changes = camel_folder_change_info_new();

            camel_object_trigger_event((CamelObject *)folder, "folder_changed", changes);
            camel_folder_change_info_free(changes);
        }
    }
}

static void
shell_client_destroy (GtkObject *object)
{
    global_shell_client = NULL;
}

static void
warning_clicked (GtkWidget *dialog, gpointer user_data)
{
    gtk_widget_destroy (dialog);
}

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;
    
    /* FIXME: should we ref this? */
    global_shell_client = shell_client;
    gtk_signal_connect (GTK_OBJECT (shell_client), "destroy",
                shell_client_destroy, NULL);
    
    evolution_dir = g_strdup (evolution_homedir);
    mail_session_init ();

    storages_hash = g_hash_table_new (NULL, NULL);
    
    corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell_client));
    
    vfolder_load_storage(corba_shell);

    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, CAMEL_STORE_FOLDER_CREATE,
                        got_folder, standard_folders[i].folder, mail_thread_new));
    }
    
    mail_session_enable_interaction (TRUE);
        
    mail_autoreceive_setup ();
    
    if (mail_config_is_corrupt ()) {
        GtkWidget *dialog;
        
        dialog = gnome_warning_dialog (_("Some of your mail settings seem corrupt, "
                         "please check that everything is in order."));
        gtk_signal_connect (GTK_OBJECT (dialog), "clicked", warning_clicked, NULL);
        gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
        gtk_widget_show (dialog);
    }
}

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

static void
debug_cb (EvolutionShellComponent *shell_component, gpointer user_data)
{
    extern gboolean camel_verbose_debug;
    
    camel_verbose_debug = 1;
}

static void
handle_external_uri_cb (EvolutionShellComponent *shell_component,
            const char *uri,
            void *data)
{
    if (strncmp (uri, "mailto:", 7) != 0) {
        /* FIXME: Exception?  The EvolutionShellComponent object should
           give me a chance to do so, but currently it doesn't.  */
        g_warning ("Invalid URI requested to mail component -- %s", uri);
        return;
    }
        
    /* FIXME: Sigh.  This shouldn't be here.  But the code is messy, so
       I'll just put it here anyway.  */
    send_to_url (uri);
}

static void
user_create_new_item_cb (EvolutionShellComponent *shell_component,
             const char *id,
             const char *parent_folder_physical_uri,
             const char *parent_folder_type,
             gpointer data)
{
    if (!strcmp (id, "message")) {
        send_to_url (NULL);
        return;
    } 

    g_warning ("Don't know how to create item of type \"%s\"", id);
}

static gboolean
idle_quit (gpointer user_data)
{
    mail_msg_wait_all();

    if (e_list_length (folder_browser_factory_get_control_list ()))
        return TRUE;

    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);

/* Table for signal handler setup/cleanup */
static struct {
    char *sig;
    GtkSignalFunc func;
    int hand;
} shell_component_handlers[] = {
    { "owner_set", owner_set_cb, },
    { "owner_unset", owner_unset_cb, },
    { "debug", debug_cb, },
    { "destroy", owner_unset_cb, },
    { "handle_external_uri", handle_external_uri_cb, },
    { "user_create_new_item", user_create_new_item_cb }
};

static void
owner_unset_cb (EvolutionShellComponent *shell_component, gpointer user_data)
{
    int i;

    for (i=0;i<sizeof(shell_component_handlers)/sizeof(shell_component_handlers[0]);i++)
        gtk_signal_disconnect((GtkObject *)shell_component, shell_component_handlers[i].hand);

    if (mail_config_get_empty_trash_on_exit ())
        empty_trash (NULL, NULL, NULL);

    mail_msg_wait_all();
    
    unref_standard_folders ();
    mail_importer_uninit ();

    global_shell_client = NULL;
    
    mail_session_enable_interaction (FALSE);
    g_idle_add_full (G_PRIORITY_LOW, idle_quit, NULL, NULL);
}

static BonoboObject *
create_component (void)
{
    EvolutionShellComponentDndDestinationFolder *destination_interface;
    MailOfflineHandler *offline_handler;
    int i;

    shell_component = evolution_shell_component_new (folder_types,
                             schema_types,
                             create_view,
                             create_folder,
                             remove_folder,
                             xfer_folder,
                             /*populate_folder_context_menu*/NULL,
                             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));
    
    evolution_mail_config_wizard_init ();

    evolution_shell_component_add_user_creatable_item (shell_component, "message", _("New Mail Message"), _("New _Mail Message"), 'm');

    for (i=0;i<sizeof(shell_component_handlers)/sizeof(shell_component_handlers[0]);i++) {
        shell_component_handlers[i].hand = gtk_signal_connect(GTK_OBJECT(shell_component),
                                      shell_component_handlers[i].sig,
                                      shell_component_handlers[i].func, 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)
{
    BonoboObject *shell_component;
    int result;

    shell_component = create_component ();
    result = oaf_active_server_register (COMPONENT_ID, bonobo_object_corba_objref (shell_component));
    if (result == OAF_REG_ERROR) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize Evolution's mail component."));
        exit (1);
    } else if (result == OAF_REG_ALREADY_ACTIVE) {
        g_warning ("evolution-mail is already running");
        exit (1);
    }

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

    if (evolution_folder_info_factory_init () == FALSE) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize Evolution's folder info component."));
        exit (1);
    }
}

static void
notify_listener (const Bonobo_Listener listener, 
         GNOME_Evolution_Storage_Result corba_result)
{
    CORBA_any any;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    any._type = TC_GNOME_Evolution_Storage_Result;
    any._value = &corba_result;

    Bonobo_Listener_event (listener, "result", &any, &ev);

    CORBA_exception_free (&ev);
}

static void
storage_create_folder (EvolutionStorage *storage,
               const Bonobo_Listener listener,
               const char *path,
               const char *type,
               const char *description,
               const char *parent_physical_uri,
               gpointer user_data)
{
    CamelStore *store = user_data;
    CamelFolderInfo *root, *fi;
    char *name;
    CamelURL *url;
    CamelException ex;
    
    if (strcmp (type, "mail") != 0) {
        notify_listener (listener, GNOME_Evolution_Storage_UNSUPPORTED_TYPE);
        return;
    }
    
    name = strrchr (path, '/');
    if (!name++) {
        notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
        return;
    }
    
    camel_exception_init (&ex);
    if (*parent_physical_uri) {
        url = camel_url_new (parent_physical_uri, NULL);
        if (!url) {
            notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
            return;
        }
        
        root = camel_store_create_folder (store, url->path + 1, name, &ex);
        camel_url_free (url);
    } else
        root = camel_store_create_folder (store, NULL, name, &ex);
    
    if (camel_exception_is_set (&ex)) {
        /* FIXME: do better than this */
        camel_exception_clear (&ex);
        notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
        return;
    }
    
    if (camel_store_supports_subscriptions (store)) {
        for (fi = root; fi; fi = fi->child)
            camel_store_subscribe_folder (store, fi->full_name, NULL);
    }

    camel_store_free_folder_info (store, root);
    
    notify_listener (listener, GNOME_Evolution_Storage_OK);
}

static void
storage_remove_folder (EvolutionStorage *storage,
               const Bonobo_Listener listener,
               const char *path,
               const char *physical_uri,
               gpointer user_data)
{
    CamelStore *store = user_data;
    CamelURL *url = NULL;
    char *name;
    CamelException ex;
    
    g_warning ("storage_remove_folder: path=\"%s\"; uri=\"%s\"", path, physical_uri);
    
    if (!path || !physical_uri || !strncmp (physical_uri, "vtrash:", 7)) {
        notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
        return;
    }
    
    url = camel_url_new (physical_uri, NULL);
    if (!url) {
        notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
        return;
    }
    
    if (!*path) {
        camel_url_free (url);
        notify_listener (listener, GNOME_Evolution_Storage_INVALID_URI);
        return;
    }
    
    camel_exception_init (&ex);

    if (url->fragment)
        name = url->fragment;
    else if (url->path && url->path[0])
        name = url->path+1;
    else
        name = "";

    if (camel_store_supports_subscriptions (store))
        camel_store_unsubscribe_folder (store, name, NULL);
    
    camel_store_delete_folder (store, name, &ex);
    
    camel_url_free (url);
    if (camel_exception_is_set (&ex))
        goto exception;
    
    evolution_storage_removed_folder (storage, path);
    
    notify_listener (listener, GNOME_Evolution_Storage_OK);
    return;
    
 exception:
    /* FIXME: do better than this... */
    camel_exception_clear (&ex);
    notify_listener (listener, GNOME_Evolution_Storage_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_note_store((CamelStore *)store, storage, CORBA_OBJECT_NIL, NULL, NULL);
        /* 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;
    }
}

void
mail_load_storage_by_uri (GNOME_Evolution_Shell shell, const char *uri, const char *name)
{
    CamelException ex;
    CamelService *store;
    CamelProvider *prov;
    
    camel_exception_init (&ex);
    
    /* Load the service (don't connect!). Check its provider and
     * see if this belongs in the shell's folder list. If so, add
     * it.
     */

    prov = camel_session_get_provider (session, uri, &ex);
    if (prov == NULL) {
        /* FIXME: real error dialog */
        g_warning ("couldn't get service %s: %s\n", uri,
               camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
        return;
    }

    if (!(prov->flags & CAMEL_PROVIDER_IS_STORAGE) ||
        (prov->flags & CAMEL_PROVIDER_IS_EXTERNAL))
        return;

    store = camel_session_get_service (session, uri, CAMEL_PROVIDER_STORE, &ex);
    if (store == NULL) {
        /* FIXME: real error dialog */
        g_warning ("couldn't get service %s: %s\n", uri,
               camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
        return;
    }
    
    if (name == NULL) {
        char *service_name;
        
        service_name = camel_service_get_name (store, TRUE);
        add_storage (service_name, uri, store, shell, &ex);
        g_free (service_name);
    } else
        add_storage (name, uri, store, shell, &ex);
    
    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));
}

/* 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;
        char *name;
        
        if (is_account_data) {
            account = iter->data;
            service = account->source;
            name = account->name;
        } else {
            service = iter->data;
            name = NULL;
        }
        
        if (service == NULL || service->url == NULL || service->url[0] == '\0' || !service->enabled)
            continue;
        
        mail_load_storage_by_uri (shell, service->url, name);
    }
}

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)
        bonobo_object_ref (BONOBO_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));
}

void
mail_remove_storage_by_uri (const char *uri)
{
    CamelProvider *prov;
    CamelService *store;

    prov = camel_session_get_provider (session, uri, NULL);
    if (!prov)
        return;
    if (!(prov->flags & CAMEL_PROVIDER_IS_STORAGE) ||
        (prov->flags & CAMEL_PROVIDER_IS_EXTERNAL))
        return;

    store = camel_session_get_service (session, uri, CAMEL_PROVIDER_STORE, NULL);
    if (store != NULL) {
        mail_remove_storage (CAMEL_STORE (store));
        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);
}