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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* evolution-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 "evolution-storage.h"

#include "Evolution.h"

#include "e-folder.h"
#include "e-folder-tree.h"
#include "e-shell-constants.h"
#include "e-shell-corba-icon-utils.h"

#include "e-shell-marshal.h"

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

#include <gtk/gtksignal.h>
#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-exception.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <glib.h>


#define PARENT_TYPE BONOBO_OBJECT_TYPE
static BonoboXObjectClass *parent_class = NULL;

struct _FolderPropertyItem {
    char *label;
    char *tooltip;
    GdkPixbuf *icon;
};
typedef struct _FolderPropertyItem FolderPropertyItem;

struct _EvolutionStoragePrivate {
    /* Name of the storage.  */
    char *name;

    /* Whether there are shared folders in this storage.  */
    gboolean has_shared_folders;

    /* What we will display as the name of the storage. */
    char *display_name;

    /* The set of folders we have in this storage.  */
    EFolderTree *folder_tree;

    /* Mappings from URIs to folder tree paths.  */
    GHashTable *uri_to_path;

    /* The listener registered on this storage.  */
    GList *corba_storage_listeners;

    /* The property items.  */
    GSList *folder_property_items;
};


enum {
    CREATE_FOLDER,
    REMOVE_FOLDER,
    XFER_FOLDER,
    UPDATE_FOLDER,
    OPEN_FOLDER,
    DISCOVER_SHARED_FOLDER,
    CANCEL_DISCOVER_SHARED_FOLDER,
    REMOVE_SHARED_FOLDER,
    SHOW_FOLDER_PROPERTIES,

    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };


/* Utility functions.  */

static void
list_through_listener_foreach (EFolderTree *tree,
                   const char *path,
                   void *data,
                   void *closure)
{
    const GNOME_Evolution_Folder *corba_folder;
    GNOME_Evolution_StorageListener corba_listener;
    CORBA_Environment ev;

    corba_folder = (GNOME_Evolution_Folder *) data;
    corba_listener = (GNOME_Evolution_StorageListener) closure;

    /* The root folder has no data.  */
    if (corba_folder == NULL)
        return;
    
    CORBA_exception_init (&ev);
    GNOME_Evolution_StorageListener_notifyFolderCreated (corba_listener, path, corba_folder, &ev);
    CORBA_exception_free (&ev);
}

static void
list_through_listener (EvolutionStorage *storage,
               GNOME_Evolution_StorageListener listener,
               CORBA_Environment *ev)
{
    EvolutionStoragePrivate *priv;

    priv = storage->priv;

    e_folder_tree_foreach (priv->folder_tree,
                   list_through_listener_foreach,
                   listener);
}

static GList *
find_listener_in_list (const GNOME_Evolution_StorageListener listener,
               GList *list)
{
    CORBA_Environment ev;
    GList *p;

    CORBA_exception_init (&ev);

    for (p = list; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener_item;

        listener_item = (GNOME_Evolution_StorageListener) p->data;

        if (CORBA_Object_is_equivalent (listener_item, listener, &ev) && ev._major == CORBA_NO_EXCEPTION)
            return p;
    }

    CORBA_exception_free (&ev);

    return NULL;
}

static gboolean
add_listener (EvolutionStorage *storage,
          const GNOME_Evolution_StorageListener listener)
{
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_StorageListener listener_copy;
    CORBA_Environment ev;

    priv = storage->priv;

    if (find_listener_in_list (listener, priv->corba_storage_listeners) != NULL)
        return FALSE;

    CORBA_exception_init (&ev);

    listener_copy = CORBA_Object_duplicate (listener, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        /* Panic.  */
        g_warning ("EvolutionStorage -- Cannot duplicate listener.");
        CORBA_exception_free (&ev);

        /* FIXME this will cause the ::add_listener implementation to
                   incorrectly raise `AlreadyListening' */
        return FALSE;
    }

    priv->corba_storage_listeners = g_list_prepend (priv->corba_storage_listeners,
                            listener_copy);

    list_through_listener (storage, listener_copy, &ev);

    CORBA_exception_free (&ev);

    return TRUE;
}

static gboolean
remove_listener (EvolutionStorage *storage,
         const GNOME_Evolution_StorageListener listener)
{
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;
    GList *p;

    priv = storage->priv;

    p = find_listener_in_list (listener, priv->corba_storage_listeners);
    if (p == NULL)
        return FALSE;

    CORBA_exception_init (&ev);
    CORBA_Object_release ((CORBA_Object) p->data, &ev);
    CORBA_exception_free (&ev);

    priv->corba_storage_listeners = g_list_remove_link (priv->corba_storage_listeners, p);

    return TRUE;
}


/* Functions for the EFolderTree in the storage.  */

static void
folder_destroy_notify (EFolderTree *tree,
               const char *path,
               void *data,
               void *closure)
{
    GNOME_Evolution_Folder *corba_folder;

    corba_folder = (GNOME_Evolution_Folder *) data;
    CORBA_free (data);
}


/* CORBA interface implementation.  */

static CORBA_char *
impl_Storage__get_name (PortableServer_Servant servant,
            CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);
    priv = storage->priv;

    return CORBA_string_dup (priv->name);
}

static CORBA_boolean
impl_Storage__get_hasSharedFolders (PortableServer_Servant servant,
                    CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);
    priv = storage->priv;

    return priv->has_shared_folders;
}

static GNOME_Evolution_Folder *
impl_Storage_getFolderAtPath (PortableServer_Servant servant,
                  const CORBA_char *path,
                  CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_Folder *corba_folder;
    GNOME_Evolution_Folder *return_value;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);
    priv = storage->priv;

        corba_folder = e_folder_tree_get_folder (priv->folder_tree, path);
    if (corba_folder == NULL) {
        CORBA_exception_set (ev, CORBA_USER_EXCEPTION, ex_GNOME_Evolution_Storage_NotFound, NULL);
        return NULL;
    }

    /* duplicate CORBA structure */
    return_value = GNOME_Evolution_Folder__alloc ();
    return_value->type = CORBA_string_dup (corba_folder->type);
    return_value->description = CORBA_string_dup (corba_folder->description);
    return_value->displayName = CORBA_string_dup (corba_folder->displayName);
    return_value->physicalUri = CORBA_string_dup (corba_folder->physicalUri);
    return_value->evolutionUri = CORBA_string_dup (corba_folder->evolutionUri);
    return_value->customIconName = CORBA_string_dup (corba_folder->customIconName);
    return_value->unreadCount = corba_folder->unreadCount;
    return_value->canSyncOffline = corba_folder->canSyncOffline;
    return_value->sortingPriority = corba_folder->sortingPriority;

    return return_value;
}

static void
get_folder_list_foreach (EFolderTree *tree,
             const char *path,
             void *data,
             void *closure)
{
    const GNOME_Evolution_Folder *corba_folder;
    GNOME_Evolution_Folder *new_corba_folder;
    GNOME_Evolution_FolderList *folder_list;
    
    corba_folder = (GNOME_Evolution_Folder *) data;
    folder_list = (GNOME_Evolution_FolderList *) closure;

    /* The root folder has no data.  */
    if (corba_folder == NULL)
        return;

    new_corba_folder = folder_list->_buffer + folder_list->_length;
    new_corba_folder->displayName     = CORBA_string_dup (corba_folder->displayName);
    new_corba_folder->description     = CORBA_string_dup (corba_folder->description);
    new_corba_folder->type            = CORBA_string_dup (corba_folder->type);
    new_corba_folder->physicalUri     = CORBA_string_dup (corba_folder->physicalUri);
    new_corba_folder->evolutionUri    = CORBA_string_dup (corba_folder->evolutionUri);
    new_corba_folder->unreadCount     = corba_folder->unreadCount;
    new_corba_folder->sortingPriority = corba_folder->sortingPriority;
    new_corba_folder->customIconName  = CORBA_string_dup (corba_folder->customIconName);
    
    folder_list->_length++;
}

static GNOME_Evolution_FolderList *
impl_Storage__get_folderList (PortableServer_Servant servant,
                  CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_FolderList *folder_list;
    
    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);
    priv = storage->priv;
    
    folder_list = GNOME_Evolution_FolderList__alloc ();
    folder_list->_maximum = e_folder_tree_get_count (priv->folder_tree) - 1;
    folder_list->_length = 0;
    folder_list->_buffer = CORBA_sequence_GNOME_Evolution_Folder_allocbuf (folder_list->_maximum);

    e_folder_tree_foreach (priv->folder_tree, get_folder_list_foreach, folder_list);

    CORBA_sequence_set_release (folder_list, TRUE);
    return folder_list;
}

static void
impl_Storage_asyncCreateFolder (PortableServer_Servant servant,
                const CORBA_char *path,
                const CORBA_char *type,
                const CORBA_char *description,
                const CORBA_char *parent_physical_uri,
                const Bonobo_Listener listener,
                CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    CORBA_Object obj_dup;
    EvolutionStorage *storage;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    obj_dup = CORBA_Object_duplicate (listener, ev);
    g_signal_emit (storage, signals[CREATE_FOLDER], 0,
               obj_dup, path, type, description, parent_physical_uri);
}


static void
impl_Storage_asyncRemoveFolder (PortableServer_Servant servant,
                const CORBA_char *path,
                const CORBA_char *physical_uri,
                const Bonobo_Listener listener,
                CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    CORBA_Object obj_dup;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    obj_dup = CORBA_Object_duplicate (listener, ev);
    g_signal_emit (storage, signals[REMOVE_FOLDER], 0,
               obj_dup, path, physical_uri);
}

static void
impl_Storage_asyncXferFolder (PortableServer_Servant servant,
                  const CORBA_char *source_path,
                  const CORBA_char *destination_path,
                  const CORBA_boolean remove_source,
                  const Bonobo_Listener listener,
                  CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    CORBA_Object obj_dup;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    obj_dup = CORBA_Object_duplicate (listener, ev);
    g_signal_emit (storage, signals[XFER_FOLDER], 0,
               obj_dup, source_path, destination_path, remove_source);
}

static void
impl_Storage_updateFolder (PortableServer_Servant servant,
               const CORBA_char *path,
               CORBA_long unread_count,
               CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStoragePrivate *priv;
    EvolutionStorage *storage;
    GList *p;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    g_signal_emit (storage, signals[UPDATE_FOLDER], 0,
               path, unread_count);

    priv = storage->priv;

    if (priv->corba_storage_listeners == NULL)
        return;

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;
        CORBA_Environment my_ev;

        CORBA_exception_init (&my_ev);

        listener = p->data;
        GNOME_Evolution_StorageListener_notifyFolderUpdated (listener, path,
                                     unread_count, &my_ev);

        CORBA_exception_free (&my_ev);
    }
}

static void
impl_Storage_asyncOpenFolder (PortableServer_Servant servant,
                  const CORBA_char *path,
                  CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    g_signal_emit (storage, signals[OPEN_FOLDER], 0,
               path);
}

static void
impl_Storage_asyncDiscoverSharedFolder (PortableServer_Servant servant,
                    const CORBA_char *user,
                    const CORBA_char *folder_name,
                    Bonobo_Listener listener,
                    CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    CORBA_Object obj_dup;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    obj_dup = CORBA_Object_duplicate (listener, ev);
    g_signal_emit (storage, signals[DISCOVER_SHARED_FOLDER], 0,
               obj_dup, user, folder_name);
}

static void
impl_Storage_cancelDiscoverSharedFolder (PortableServer_Servant servant,
                    const CORBA_char *user,
                    const CORBA_char *folder_name,
                    CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    g_signal_emit (storage, signals[CANCEL_DISCOVER_SHARED_FOLDER], 0,
               user, folder_name);
}

static void
impl_Storage_asyncRemoveSharedFolder (PortableServer_Servant servant,
                      const CORBA_char *path,
                      const Bonobo_Listener listener,
                      CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;
    CORBA_Object obj_dup;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    obj_dup = CORBA_Object_duplicate (listener, ev);
    g_signal_emit (storage, signals[REMOVE_SHARED_FOLDER], 0,
               obj_dup, path);
}

static void
impl_Storage_addListener (PortableServer_Servant servant,
              const GNOME_Evolution_StorageListener listener,
              CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    if (! add_listener (storage, listener))
        CORBA_exception_set (ev, CORBA_USER_EXCEPTION, ex_GNOME_Evolution_Storage_AlreadyListening, NULL);
}

static void
impl_Storage_removeListener (PortableServer_Servant servant,
                 const GNOME_Evolution_StorageListener listener,
                 CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionStorage *storage;

    bonobo_object = bonobo_object_from_servant (servant);
    storage = EVOLUTION_STORAGE (bonobo_object);

    if (! remove_listener (storage, listener))
        CORBA_exception_set (ev, CORBA_USER_EXCEPTION, ex_GNOME_Evolution_Storage_NotFound, NULL);
}

static void
impl_Storage_showFolderProperties (PortableServer_Servant servant,
                   const CORBA_char *path,
                   const CORBA_short item_number,
                   const CORBA_long parent_window_id,
                   CORBA_Environment *ev)
{
    EvolutionStorage *storage;

    storage = EVOLUTION_STORAGE (bonobo_object_from_servant (servant));
    g_signal_emit (storage, signals[SHOW_FOLDER_PROPERTIES], 0,
               path, item_number, parent_window_id);
}

static GNOME_Evolution_Storage_FolderPropertyItemList *
impl_Storage__get_folderPropertyItems (PortableServer_Servant servant,
                       CORBA_Environment *ev)
{
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_Storage_FolderPropertyItemList *list;
    GSList *p;
    int count;
    int i;

    storage = EVOLUTION_STORAGE (bonobo_object_from_servant (servant));
    priv = storage->priv;

    count = g_slist_length (priv->folder_property_items);

    list = GNOME_Evolution_Storage_FolderPropertyItemList__alloc ();
    list->_length = list->_maximum = count;
    list->_buffer = CORBA_sequence_GNOME_Evolution_Storage_FolderPropertyItem_allocbuf (list->_maximum);

    for (i = 0, p = priv->folder_property_items; p != NULL; i ++, p = p->next) {
        const FolderPropertyItem *item;

        item = (const FolderPropertyItem *) p->data;

        list->_buffer[i].label   = CORBA_string_dup (item->label);
        list->_buffer[i].tooltip = CORBA_string_dup (item->tooltip);
        e_store_corba_icon_from_pixbuf (item->icon, & list->_buffer[i].icon);
    }

    CORBA_sequence_set_release (list, TRUE);

    return list;
}


/* GObject methods.  */

static void
free_mapping (gpointer key, gpointer value, gpointer user_data)
{
    g_free (key);
    g_free (value);
}

static void
impl_dispose (GObject *object)
{
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;
    GList *p;

    storage = EVOLUTION_STORAGE (object);
    priv = storage->priv;

    CORBA_exception_init (&ev);

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;

        listener = p->data;

        GNOME_Evolution_StorageListener_notifyDestroyed (listener, &ev);

        /* (This is not a Bonobo object, so no unref.)  */
        CORBA_Object_release (listener, &ev);
    }

    g_list_free (priv->corba_storage_listeners);
    priv->corba_storage_listeners = NULL;

    CORBA_exception_free (&ev);

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

static void
impl_finalize (GObject *object)
{
    EvolutionStorage *storage;
    EvolutionStoragePrivate *priv;
    GSList *sp;

    storage = EVOLUTION_STORAGE (object);
    priv = storage->priv;

    g_free (priv->name);
    if (priv->folder_tree != NULL)
        e_folder_tree_destroy (priv->folder_tree);
    if (priv->uri_to_path != NULL) {
        g_hash_table_foreach (priv->uri_to_path, free_mapping, NULL);
        g_hash_table_destroy (priv->uri_to_path);
    }

    for (sp = priv->folder_property_items; sp != NULL; sp = sp->next) {
        FolderPropertyItem *item;

        item = (FolderPropertyItem *) sp->data;

        g_free (item->label);
        g_free (item->tooltip);
        if (item->icon != NULL)
            gdk_pixbuf_unref (item->icon);
        g_free (item);
    }
    g_slist_free (priv->folder_property_items);

    g_free (priv);

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


static void
class_init (EvolutionStorageClass *klass)
{
    POA_GNOME_Evolution_Storage__epv *epv;
    GObjectClass *object_class;

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

    epv = & klass->epv;
    epv->_get_name                  = impl_Storage__get_name;
    epv->_get_hasSharedFolders      = impl_Storage__get_hasSharedFolders;
    epv->getFolderAtPath            = impl_Storage_getFolderAtPath;
    epv->_get_folderList            = impl_Storage__get_folderList;
    epv->asyncCreateFolder          = impl_Storage_asyncCreateFolder;
    epv->asyncRemoveFolder          = impl_Storage_asyncRemoveFolder;
    epv->asyncXferFolder            = impl_Storage_asyncXferFolder;
    epv->asyncOpenFolder            = impl_Storage_asyncOpenFolder;
    epv->updateFolder               = impl_Storage_updateFolder;
    epv->asyncDiscoverSharedFolder  = impl_Storage_asyncDiscoverSharedFolder;
    epv->cancelDiscoverSharedFolder = impl_Storage_cancelDiscoverSharedFolder;
    epv->asyncRemoveSharedFolder    = impl_Storage_asyncRemoveSharedFolder;
    epv->addListener                = impl_Storage_addListener;
    epv->removeListener             = impl_Storage_removeListener;
    epv->showFolderProperties       = impl_Storage_showFolderProperties;
    epv->_get_folderPropertyItems   = impl_Storage__get_folderPropertyItems;

    parent_class = gtk_type_class (PARENT_TYPE);

    signals[CREATE_FOLDER] = gtk_signal_new ("create_folder",
                         GTK_RUN_LAST,
                         GTK_CLASS_TYPE (object_class),
                         GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                    create_folder),
                         e_shell_marshal_NONE__POINTER_STRING_STRING_STRING_STRING,
                         GTK_TYPE_NONE, 5,
                         GTK_TYPE_POINTER,
                         GTK_TYPE_STRING,
                         GTK_TYPE_STRING,
                         GTK_TYPE_STRING,
                         GTK_TYPE_STRING);

    signals[REMOVE_FOLDER] = gtk_signal_new ("remove_folder",
                         GTK_RUN_LAST,
                         GTK_CLASS_TYPE (object_class),
                         GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                    remove_folder),
                         e_shell_marshal_NONE__POINTER_STRING_STRING,
                         GTK_TYPE_NONE, 3,
                         GTK_TYPE_POINTER,
                         GTK_TYPE_STRING,
                         GTK_TYPE_STRING);

    signals[XFER_FOLDER] = gtk_signal_new ("xfer_folder",
                           GTK_RUN_LAST,
                           GTK_CLASS_TYPE (object_class),
                           GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                  xfer_folder),
                           e_shell_marshal_NONE__POINTER_STRING_STRING_BOOL,
                           GTK_TYPE_NONE, 4,
                           GTK_TYPE_POINTER,
                           GTK_TYPE_STRING,
                           GTK_TYPE_STRING,
                           GTK_TYPE_BOOL);
    
    signals[UPDATE_FOLDER] = gtk_signal_new ("update_folder",
                         GTK_RUN_FIRST,
                         GTK_CLASS_TYPE (object_class),
                         GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                    update_folder),
                         e_shell_marshal_NONE__STRING_INT,
                         GTK_TYPE_NONE, 2,
                         GTK_TYPE_STRING,
                         GTK_TYPE_INT);

    signals[OPEN_FOLDER] = gtk_signal_new ("open_folder",
                           GTK_RUN_LAST,
                           GTK_CLASS_TYPE (object_class),
                           GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                  open_folder),
                           e_shell_marshal_NONE__STRING,
                           GTK_TYPE_NONE, 1,
                           GTK_TYPE_STRING);

    signals[DISCOVER_SHARED_FOLDER] = gtk_signal_new ("discover_shared_folder",
                              GTK_RUN_LAST,
                              GTK_CLASS_TYPE (object_class),
                              GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                         discover_shared_folder),
                              e_shell_marshal_NONE__POINTER_STRING_STRING,
                              GTK_TYPE_NONE, 3,
                              GTK_TYPE_POINTER,
                              GTK_TYPE_STRING,
                              GTK_TYPE_STRING);

    signals[CANCEL_DISCOVER_SHARED_FOLDER] = gtk_signal_new ("cancel_discover_shared_folder",
                                 GTK_RUN_LAST,
                                 GTK_CLASS_TYPE (object_class),
                                 GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                            cancel_discover_shared_folder),
                                 e_shell_marshal_NONE__STRING_STRING,
                                 GTK_TYPE_NONE, 2,
                                 GTK_TYPE_STRING,
                                 GTK_TYPE_STRING);

    signals[REMOVE_SHARED_FOLDER] = gtk_signal_new ("remove_shared_folder",
                            GTK_RUN_LAST,
                            GTK_CLASS_TYPE (object_class),
                            GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                       remove_shared_folder),
                            e_shell_marshal_NONE__STRING_POINTER,
                            GTK_TYPE_NONE, 2,
                            GTK_TYPE_STRING,
                            GTK_TYPE_POINTER);

    signals[SHOW_FOLDER_PROPERTIES] = gtk_signal_new ("show_folder_properties",
                              GTK_RUN_LAST,
                              GTK_CLASS_TYPE (object_class),
                              GTK_SIGNAL_OFFSET (EvolutionStorageClass,
                                         show_folder_properties),
                              e_shell_marshal_NONE__STRING_INT_INT,
                              GTK_TYPE_NONE, 3,
                              GTK_TYPE_STRING,
                              GTK_TYPE_INT,
                              GTK_TYPE_INT);
}

static void
init (EvolutionStorage *storage)
{
    EvolutionStoragePrivate *priv;

    priv = g_new (EvolutionStoragePrivate, 1);
    priv->name                    = NULL;
    priv->has_shared_folders      = FALSE;
    priv->folder_tree             = e_folder_tree_new (folder_destroy_notify, storage);
    priv->uri_to_path             = g_hash_table_new (g_str_hash, g_str_equal);
    priv->corba_storage_listeners = NULL;
    priv->folder_property_items   = NULL;

    storage->priv = priv;
}


void
evolution_storage_construct (EvolutionStorage *storage,
                 const char *name,
                 gboolean has_shared_folders)
{
    EvolutionStoragePrivate *priv;

    g_return_if_fail (EVOLUTION_IS_STORAGE (storage));
    g_return_if_fail (name != NULL);
    g_return_if_fail (name[0] != '\0');

    priv = storage->priv;
    priv->name               = g_strdup (name);
    priv->has_shared_folders = !! has_shared_folders;
}

EvolutionStorage *
evolution_storage_new (const char *name,
               gboolean has_shared_folders)
{
    EvolutionStorage *new;

    g_return_val_if_fail (name != NULL, NULL);
    g_return_val_if_fail (name[0] != '\0', NULL);

    new = g_object_new (evolution_storage_get_type (), 0);

    evolution_storage_construct (new, name, has_shared_folders);

    return new;
}

void
evolution_storage_rename (EvolutionStorage *evolution_storage,
              const char *new_name)
{
    /* FIXME: Implement me */
}

EvolutionStorageResult
evolution_storage_register (EvolutionStorage *evolution_storage,
                GNOME_Evolution_StorageRegistry corba_storage_registry)
{
    EvolutionStorageResult result;
    GNOME_Evolution_StorageListener corba_storage_listener;
    GNOME_Evolution_Storage corba_storage;
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (corba_storage_registry != CORBA_OBJECT_NIL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    if (priv->corba_storage_listeners != NULL)
        return EVOLUTION_STORAGE_ERROR_ALREADYREGISTERED;

    CORBA_exception_init (&ev);

    corba_storage = bonobo_object_corba_objref (BONOBO_OBJECT (evolution_storage));
    corba_storage_listener = GNOME_Evolution_StorageRegistry_addStorage (corba_storage_registry,
                                         corba_storage,
                                         priv->name,
                                         &ev);

    if (ev._major == CORBA_NO_EXCEPTION) {
        add_listener (evolution_storage, corba_storage_listener);
        result = EVOLUTION_STORAGE_OK;
    } else {
        if (ev._major != CORBA_USER_EXCEPTION)
            result = EVOLUTION_STORAGE_ERROR_CORBA;
        else if (strcmp (CORBA_exception_id (&ev), ex_GNOME_Evolution_StorageRegistry_Exists) == 0)
            result = EVOLUTION_STORAGE_ERROR_EXISTS;
        else
            result = EVOLUTION_STORAGE_ERROR_GENERIC;
    }

    CORBA_exception_free (&ev);

    return result;
}

EvolutionStorageResult
evolution_storage_register_on_shell (EvolutionStorage *evolution_storage,
                     GNOME_Evolution_Shell corba_shell)
{
    GNOME_Evolution_StorageRegistry corba_storage_registry;
    EvolutionStorageResult result;
    CORBA_Environment ev;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (corba_shell != CORBA_OBJECT_NIL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    CORBA_exception_init (&ev);

    corba_storage_registry = Bonobo_Unknown_queryInterface (corba_shell,
                                "IDL:GNOME/Evolution/StorageRegistry:1.0",
                                &ev);
    if (corba_storage_registry == CORBA_OBJECT_NIL || ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        return EVOLUTION_STORAGE_ERROR_NOREGISTRY;
    }

    result = evolution_storage_register (evolution_storage, corba_storage_registry);

    Bonobo_Unknown_unref (corba_storage_registry, &ev);
    CORBA_Object_release (corba_storage_registry, &ev);

    CORBA_exception_free (&ev);

    return result;
}

EvolutionStorageResult
evolution_storage_deregister_on_shell (EvolutionStorage *evolution_storage,
                       GNOME_Evolution_Shell corba_shell)
{
    GNOME_Evolution_StorageRegistry corba_storage_registry;
    EvolutionStorageResult result;
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (corba_shell != CORBA_OBJECT_NIL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    CORBA_exception_init (&ev);

    corba_storage_registry = Bonobo_Unknown_queryInterface (corba_shell,
                                "IDL:GNOME/Evolution/StorageRegistry:1.0",
                                &ev);
    if (corba_storage_registry == CORBA_OBJECT_NIL || ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        return EVOLUTION_STORAGE_ERROR_NOREGISTRY;
    }

    GNOME_Evolution_StorageRegistry_removeStorageByName (corba_storage_registry,
                                 priv->name,
                                 &ev);

    if (ev._major == CORBA_NO_EXCEPTION)
        result = EVOLUTION_STORAGE_OK;
    else {
        if (ev._major != CORBA_USER_EXCEPTION)
            result = EVOLUTION_STORAGE_ERROR_CORBA;
        else if (strcmp (CORBA_exception_id (&ev), ex_GNOME_Evolution_StorageRegistry_NotFound) == 0)
            result = EVOLUTION_STORAGE_ERROR_EXISTS;
        else
            result = EVOLUTION_STORAGE_ERROR_GENERIC;
    }

    /* Now unref the EvolutionStorage */
    bonobo_object_unref (BONOBO_OBJECT (evolution_storage));

    Bonobo_Unknown_unref (corba_storage_registry, &ev);
    CORBA_Object_release (corba_storage_registry, &ev);

    CORBA_exception_free (&ev);

    return result;
}

static char *
make_full_uri (EvolutionStorage *storage,
           const char *path)
{
    const char *storage_name;
    char *full_path;

    storage_name = storage->priv->name;

    if (strcmp (path, E_PATH_SEPARATOR_S) == 0)
        full_path = g_strconcat (E_SHELL_URI_PREFIX,
                     E_PATH_SEPARATOR_S, storage_name,
                     NULL);
    else if (! g_path_is_absolute (path))
        full_path = g_strconcat (E_SHELL_URI_PREFIX,
                     E_PATH_SEPARATOR_S, storage_name,
                     E_PATH_SEPARATOR_S, path, NULL);
    else
        full_path = g_strconcat (E_SHELL_URI_PREFIX,
                     E_PATH_SEPARATOR_S, storage_name,
                     path, NULL);

    return full_path;
}

EvolutionStorageResult
evolution_storage_new_folder (EvolutionStorage *evolution_storage,
                  const char *path,
                  const char *display_name,
                  const char *type,
                  const char *physical_uri,
                  const char *description,
                  const char *custom_icon_name,
                  int         unread_count,
                  gboolean    can_sync_offline,
                  int         sorting_priority)
{
    EvolutionStorageResult   result;
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_Folder  *corba_folder;
    CORBA_Environment ev;
    GList *p;
    char *evolutionUri;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (path != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (g_path_is_absolute (path), EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (display_name != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (type != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (physical_uri != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    if (description == NULL)
        description = "";

    priv = evolution_storage->priv;

    CORBA_exception_init (&ev);

    corba_folder = GNOME_Evolution_Folder__alloc ();
    corba_folder->displayName     = CORBA_string_dup (display_name);
    corba_folder->description     = CORBA_string_dup (description);
    corba_folder->type            = CORBA_string_dup (type);
    corba_folder->physicalUri     = CORBA_string_dup (physical_uri);
    corba_folder->canSyncOffline  = (CORBA_boolean) can_sync_offline;
    corba_folder->sortingPriority = sorting_priority;

    if (custom_icon_name != NULL)
        corba_folder->customIconName = CORBA_string_dup (custom_icon_name);
    else
        corba_folder->customIconName = CORBA_string_dup ("");

    evolutionUri = make_full_uri (evolution_storage, path);
    corba_folder->evolutionUri = CORBA_string_dup (evolutionUri);
    g_free (evolutionUri);

    corba_folder->unreadCount  = unread_count;

    if (! e_folder_tree_add (priv->folder_tree, path, corba_folder)) {
        CORBA_free (corba_folder);
        return EVOLUTION_STORAGE_ERROR_EXISTS;
    }
    g_hash_table_insert (priv->uri_to_path, g_strdup (physical_uri), g_strdup (path));

    result = EVOLUTION_STORAGE_OK;

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;

        listener = p->data;
        GNOME_Evolution_StorageListener_notifyFolderCreated (listener, path, corba_folder, &ev);

        if (ev._major == CORBA_NO_EXCEPTION)
            continue;

        if (ev._major != CORBA_USER_EXCEPTION)
            result = EVOLUTION_STORAGE_ERROR_CORBA;
        else if (strcmp (CORBA_exception_id (&ev), ex_GNOME_Evolution_StorageListener_Exists) == 0)
            result = EVOLUTION_STORAGE_ERROR_EXISTS;
        else
            result = EVOLUTION_STORAGE_ERROR_GENERIC;

        break;
    }

    CORBA_exception_free (&ev);

    return result;
}

EvolutionStorageResult
evolution_storage_update_folder (EvolutionStorage *evolution_storage,
                 const char       *path,
                 int               unread_count)
{
    EvolutionStorageResult result;
    EvolutionStoragePrivate *priv;
    GNOME_Evolution_Folder *corba_folder;
    GList *p;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (path != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (g_path_is_absolute (path), EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    g_signal_emit (evolution_storage, signals[UPDATE_FOLDER], 0,
               path, unread_count);

    if (priv->corba_storage_listeners == NULL)
        return EVOLUTION_STORAGE_ERROR_NOTREGISTERED;

    result = EVOLUTION_STORAGE_OK;

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;
        CORBA_Environment ev;

        CORBA_exception_init (&ev);

        listener = p->data;
        GNOME_Evolution_StorageListener_notifyFolderUpdated (listener, path, unread_count, &ev);

        CORBA_exception_free (&ev);
    }

    if (result == EVOLUTION_STORAGE_OK) {
        corba_folder = e_folder_tree_get_folder (priv->folder_tree, path);
        if (corba_folder != NULL)
            corba_folder->unreadCount = unread_count;
        else
            result = EVOLUTION_STORAGE_ERROR_NOTFOUND;
    }

    return result;
}

EvolutionStorageResult
evolution_storage_update_folder_by_uri (EvolutionStorage *evolution_storage,
                    const char       *physical_uri,
                    int               unread_count)
{
    EvolutionStoragePrivate *priv;
    char *path;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (physical_uri != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    path = g_hash_table_lookup (priv->uri_to_path, physical_uri);
    return evolution_storage_update_folder (evolution_storage, path, unread_count);
}

EvolutionStorageResult
evolution_storage_removed_folder (EvolutionStorage *evolution_storage,
                  const char *path)
{
    EvolutionStorageResult result;
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;
    GNOME_Evolution_Folder *corba_folder;
    gpointer key, value;
    GList *p;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (path != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (g_path_is_absolute (path), EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    if (priv->corba_storage_listeners == NULL)
        return EVOLUTION_STORAGE_ERROR_NOTREGISTERED;

    corba_folder = e_folder_tree_get_folder (priv->folder_tree, path);
    if (corba_folder == NULL)
        return EVOLUTION_STORAGE_ERROR_NOTFOUND;
    if (g_hash_table_lookup_extended (priv->uri_to_path, corba_folder->physicalUri, &key, &value)) {
        g_hash_table_remove (priv->uri_to_path, key);
        g_free (key);
        g_free (value);
    }
    e_folder_tree_remove (priv->folder_tree, path);

    CORBA_exception_init (&ev);

    result = EVOLUTION_STORAGE_OK;

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;

        listener = p->data;
        GNOME_Evolution_StorageListener_notifyFolderRemoved (listener, path, &ev);
        
        if (ev._major == CORBA_NO_EXCEPTION)
            continue;

        if (ev._major != CORBA_USER_EXCEPTION)
            result = EVOLUTION_STORAGE_ERROR_CORBA;
        else if (strcmp (CORBA_exception_id (&ev), ex_GNOME_Evolution_StorageListener_NotFound) == 0)
            result = EVOLUTION_STORAGE_ERROR_NOTFOUND;
        else
            result = EVOLUTION_STORAGE_ERROR_GENERIC;

        break;
    }

    CORBA_exception_free (&ev);

    return result;
}

gboolean
evolution_storage_folder_exists (EvolutionStorage *evolution_storage,
                 const char *path)
{
    EvolutionStoragePrivate *priv;

    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (path != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (g_path_is_absolute (path), EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    return e_folder_tree_get_folder (priv->folder_tree, path) != NULL;
}

EvolutionStorageResult
evolution_storage_has_subfolders (EvolutionStorage *evolution_storage,
                  const char       *path,
                  const char       *message)
{
    EvolutionStorageResult result;
    EvolutionStoragePrivate *priv;
    CORBA_Environment ev;
    GList *p;

    g_return_val_if_fail (evolution_storage != NULL,
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (EVOLUTION_IS_STORAGE (evolution_storage),
                  EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (path != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (g_path_is_absolute (path), EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);
    g_return_val_if_fail (message != NULL, EVOLUTION_STORAGE_ERROR_INVALIDPARAMETER);

    priv = evolution_storage->priv;

    if (priv->corba_storage_listeners == NULL)
        return EVOLUTION_STORAGE_ERROR_NOTREGISTERED;

    CORBA_exception_init (&ev);

    result = EVOLUTION_STORAGE_OK;

    for (p = priv->corba_storage_listeners; p != NULL; p = p->next) {
        GNOME_Evolution_StorageListener listener;

        listener = p->data;
        GNOME_Evolution_StorageListener_notifyHasSubfolders (listener, path, message, &ev);

        if (ev._major == CORBA_NO_EXCEPTION)
            continue;
        if (ev._major != CORBA_USER_EXCEPTION)
            result = EVOLUTION_STORAGE_ERROR_CORBA;
        else if (strcmp (CORBA_exception_id (&ev), ex_GNOME_Evolution_StorageListener_NotFound) == 0)
            result = EVOLUTION_STORAGE_ERROR_NOTFOUND;
        else
            result = EVOLUTION_STORAGE_ERROR_GENERIC;

        break;
    }

    CORBA_exception_free (&ev);

    return result;
}


/* Setting up property items.  */

void
evolution_storage_add_property_item  (EvolutionStorage *evolution_storage,
                      const char *label,
                      const char *tooltip,
                      GdkPixbuf *icon)
{
    FolderPropertyItem *item;

    g_return_if_fail (EVOLUTION_IS_STORAGE (evolution_storage));
    g_return_if_fail (label != NULL);

    item = g_new (FolderPropertyItem, 1);
    item->label   = g_strdup (label);
    item->tooltip = g_strdup (tooltip);
    item->icon    = icon;
    if (icon != NULL)
        gdk_pixbuf_ref (icon);

    evolution_storage->priv->folder_property_items = g_slist_append (evolution_storage->priv->folder_property_items,
                                     item);
}


E_MAKE_X_TYPE (evolution_storage, "EvolutionStorage", EvolutionStorage,
           class_init, init, PARENT_TYPE,
           POA_GNOME_Evolution_Storage__init,
           G_STRUCT_OFFSET (EvolutionStorageClass, epv))