path: root/shell/e-shell-offline-sync.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-shell-offline-sync.c - Sync folders before going into Offline mode.
 *
 * Copyright (C) 2002 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 <ettore@ximian.com>
 */

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

#include "e-shell-offline-sync.h"

#include "e-shell.h"
#include "e-shell-constants.h"

#include "Evolution.h"

#include <gconf/gconf-client.h>

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

#include <gtk/gtklabel.h>
#include <gtk/gtkmain.h>
#include <gtk/gtkprogressbar.h>
#include <gtk/gtksignal.h>

#include <libgnomeui/gnome-dialog.h>
#include <libgnome/gnome-i18n.h>

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


typedef struct _SyncData SyncData;
typedef struct _SyncFolderProgressListenerServant SyncFolderProgressListenerServant;

struct _SyncFolderProgressListenerServant {
    POA_GNOME_Evolution_SyncFolderProgressListener servant;
    SyncData *sync_data;
};

struct _SyncData {
    /* The shell.  */
    EShell *shell;

    /* The progress dialog.  */
    GtkWidget *dialog;

    /* Label in the progress dialog.  */
    GtkWidget *label;

    /* Progress bar in the progress dialog.  */
    GtkWidget *progress_bar;

    /* Path of the folder currently being synced.  */
    char *current_folder_path;

    /* Whether to cancel the current folder's syncing.  */
    gboolean cancel;

    /* Whether the current folder is finished syncing; used for async
       notification of completion.  */
    gboolean current_folder_finished;

    /* CORBA cruft.  */
    SyncFolderProgressListenerServant *progress_listener_servant;
    GNOME_Evolution_SyncFolderProgressListener progress_listener_objref;
};


/* The progress listener interface.  */

static PortableServer_ServantBase__epv SyncFolderProgressListener_base_epv;
static POA_GNOME_Evolution_SyncFolderProgressListener__epv SyncFolderProgressListener_epv;
static POA_GNOME_Evolution_SyncFolderProgressListener__vepv SyncFolderProgressListener_vepv;

static SyncFolderProgressListenerServant *
progress_listener_servant_new (SyncData *sync_data)
{
    SyncFolderProgressListenerServant *servant;

    servant = g_new0 (SyncFolderProgressListenerServant, 1);

    servant->servant.vepv = &SyncFolderProgressListener_vepv;
    servant->sync_data    = sync_data;

    return servant;
}

static void
progress_listener_servant_free (SyncFolderProgressListenerServant *servant)
{
    CORBA_Environment ev;
    PortableServer_ObjectId *oid;

    CORBA_exception_init (&ev);

    oid = PortableServer_POA_servant_to_id (bonobo_poa (), servant, &ev);
    PortableServer_POA_deactivate_object (bonobo_poa (), oid, &ev);
    CORBA_free (oid);

    CORBA_exception_free (&ev);

    g_free (servant);
}

static void
impl_SyncFolderProgressListener_updateProgress (PortableServer_Servant servant,
                        const CORBA_float percent,
                        CORBA_Environment *ev)
{
    SyncData *sync_data;

    sync_data = ((SyncFolderProgressListenerServant *) servant)->sync_data;
    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (sync_data->progress_bar), percent);
}

static void
impl_SyncFolderProgressListener_reportSuccess (PortableServer_Servant servant,
                           CORBA_Environment *ev)
{
    SyncData *sync_data;

    sync_data = ((SyncFolderProgressListenerServant *) servant)->sync_data;
    sync_data->current_folder_finished = TRUE;
}

static void
impl_SyncFolderProgressListener_reportFailure (PortableServer_Servant servant,
                           const CORBA_char *message,
                           CORBA_Environment *ev)
{
    EFolder *folder;
    SyncData *sync_data;

    sync_data = ((SyncFolderProgressListenerServant *) servant)->sync_data;

    folder = e_storage_set_get_folder (e_shell_get_storage_set (sync_data->shell),
                       sync_data->current_folder_path);

    /* FIXME -- We probably should give the user more of a chance to do
       something about it.  */
    e_notice (GTK_WINDOW (sync_data->dialog), GTK_MESSAGE_ERROR,
          _("Error synchronizing \"%s\":\n%s"), e_folder_get_name (folder), message);

    sync_data->current_folder_finished = TRUE;
}

static gboolean
setup_progress_listener (SyncData *sync_data)
{
    SyncFolderProgressListenerServant *servant;
    CORBA_Environment ev;

    SyncFolderProgressListener_base_epv._private    = NULL;
    SyncFolderProgressListener_base_epv.finalize    = NULL;
    SyncFolderProgressListener_base_epv.default_POA = NULL;

    SyncFolderProgressListener_epv.updateProgress = impl_SyncFolderProgressListener_updateProgress;
    SyncFolderProgressListener_epv.reportSuccess  = impl_SyncFolderProgressListener_reportSuccess;
    SyncFolderProgressListener_epv.reportFailure  = impl_SyncFolderProgressListener_reportFailure;

    SyncFolderProgressListener_vepv._base_epv = &SyncFolderProgressListener_base_epv;
    SyncFolderProgressListener_vepv.GNOME_Evolution_SyncFolderProgressListener_epv = &SyncFolderProgressListener_epv;

    servant = progress_listener_servant_new (sync_data);

    CORBA_exception_init (&ev);

    POA_GNOME_Evolution_SyncFolderProgressListener__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Cannot initialize GNOME::Evolution::Offline::ProgressListener");
        progress_listener_servant_free (servant);
        CORBA_exception_free (&ev);
        return FALSE;
    }

    CORBA_free (PortableServer_POA_activate_object (bonobo_poa (), servant, &ev));

    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Cannot activate GNOME::Evolution::Offline::ProgressListener");
        progress_listener_servant_free (servant);
        CORBA_exception_free (&ev);
        return FALSE;
    }

    sync_data->progress_listener_servant = servant;
    sync_data->progress_listener_objref = PortableServer_POA_servant_to_reference (bonobo_poa (),
                                               servant, &ev);

    CORBA_exception_free (&ev);

    return TRUE;
}


/* Setting up the progress dialog.  */

static int
progress_dialog_close_callback (GnomeDialog *dialog,
                void *data)
{
    /* Don't allow the dialog to be closed through the window manager close
       command.  */
    return TRUE;
}

static void
progress_dialog_clicked_callback (GnomeDialog *dialog,
                  int button_num,
                  void *data)
{
    SyncData *sync_data;

    sync_data = (SyncData *) data;
    sync_data->cancel = TRUE;
}

static void
setup_dialog (SyncData *sync_data)
{
    sync_data->dialog = gnome_dialog_new (_("Syncing Folder"), GNOME_STOCK_BUTTON_CANCEL, NULL);
    gtk_widget_set_size_request (sync_data->dialog, 300, -1);
    gtk_window_set_resizable (GTK_WINDOW (sync_data->dialog), FALSE);

    g_signal_connect (sync_data->dialog, "close",
              G_CALLBACK (progress_dialog_close_callback), sync_data);
    g_signal_connect (sync_data->dialog, "clicked",
              G_CALLBACK (progress_dialog_clicked_callback), sync_data);

    sync_data->label = gtk_label_new ("");
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (sync_data->dialog)->vbox),
                sync_data->label, FALSE, TRUE, 0);

    sync_data->progress_bar = gtk_progress_bar_new ();
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (sync_data->dialog)->vbox),
                sync_data->progress_bar, FALSE, TRUE, 0);

    gtk_widget_show_all (sync_data->dialog);
}


/* Sync the folder at the specified @folder_path.  */
static void
sync_folder (SyncData *sync_data,
         const char *folder_path,
         int num,
         int total)
{
    EvolutionShellComponentClient *component_client;
    EStorageSet *storage_set;
    GNOME_Evolution_Folder *corba_folder;
    GNOME_Evolution_Offline offline_interface;
    CORBA_Environment ev;
    EFolder *folder;
    char *evolution_uri;
    char *msg;

    CORBA_exception_init (&ev);

    /* Retrieve the folder that needs to be synced from the storage set, as
       well as the component that should perform the syncing.  */

    storage_set = e_shell_get_storage_set (sync_data->shell);

    folder = e_storage_set_get_folder (storage_set, folder_path);
    if (folder == NULL) {
        /* This might be a remote folder that is not visible right now,
           or is otherwise hidden from the tree somehow.  So we just
           ignore it, and keep going without signalling any error.  */
        return;
    }

    /* Don't attempt to sync folders that don't have the can_sync_offline
       property set.  */
    if (! e_folder_get_can_sync_offline (folder))
        return;

    component_client = e_folder_type_registry_get_handler_for_type (e_shell_get_folder_type_registry (sync_data->shell),
                                    e_folder_get_type_string (folder));

    offline_interface = evolution_shell_component_client_get_offline_interface (component_client);
    if (offline_interface == CORBA_OBJECT_NIL) {
        /* The component doesn't support going off-line, just ignore
           this as it's probably a programming error in the
           implementation of the component.  */
        return;
    }

    /* Prepare the CORBA folder to be passed to the component.  */

    corba_folder = GNOME_Evolution_Folder__alloc ();
    evolution_uri = g_strconcat (E_SHELL_URI_PREFIX, "/", folder_path, NULL);
    e_folder_to_corba (folder, evolution_uri, corba_folder);
    g_free (evolution_uri);

    /* Prepare the dialog.  */

    msg = g_strdup_printf (_("Synchronizing \"%s\" (%d of %d) ..."),
                   e_folder_get_name (folder), num, total);
    gtk_label_set_text (GTK_LABEL (sync_data->label), msg);
    g_free (msg);

    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (sync_data->progress_bar), 0.0);

    /* Get the data ready.  */

    g_free (sync_data->current_folder_path);
    sync_data->current_folder_path = g_strdup (folder_path);
    sync_data->current_folder_finished = FALSE;
    sync_data->cancel = FALSE;

    /* Tell the component to start syncing.  */

    GNOME_Evolution_Offline_syncFolder (offline_interface,
                        corba_folder,
                        sync_data->progress_listener_objref,
                        &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Error invoking ::syncFolder -- %s", BONOBO_EX_REPOID (&ev));
        CORBA_free (corba_folder);
        CORBA_exception_free (&ev);
        return;
    }

    /* Wait for the component to signal completion...  */

    while (! sync_data->current_folder_finished && ! sync_data->cancel) {
        gtk_main_iteration ();

        /* Check if the user clicked the Cancel button.  */
        if (sync_data->cancel) {
            gnome_dialog_set_sensitive (GNOME_DIALOG (sync_data->dialog), 0, FALSE);

            GNOME_Evolution_Offline_cancelSyncFolder (offline_interface, corba_folder, &ev);

            while (! sync_data->current_folder_finished)
                gtk_main_iteration ();

            break;
        }
    }

    /* All done.  */

    CORBA_free (corba_folder);
    CORBA_exception_free (&ev);
}

/* Free up the data needed for syncing.  */
static void
cleanup (SyncData *sync_data)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    if (sync_data->dialog != NULL)
        gtk_widget_destroy (sync_data->dialog);

    if (sync_data->progress_listener_servant != NULL)
        progress_listener_servant_free (sync_data->progress_listener_servant);

    if (sync_data->progress_listener_objref != CORBA_OBJECT_NIL)
        CORBA_Object_release (sync_data->progress_listener_objref, &ev);

    g_free (sync_data);

    CORBA_exception_free (&ev);
}


void
e_shell_offline_sync_all_folders (EShell *shell,
                  GtkWindow *parent_window)
{
    GConfClient *gconf_client;
    SyncData *sync_data;
    GSList *path_list;
    GSList *p;
    int i;

    gconf_client = gconf_client_get_default ();

    path_list = gconf_client_get_list (gconf_client, "/apps/evolution/shell/offline/folder_paths",
                       GCONF_VALUE_STRING, NULL);

    sync_data = g_new0 (SyncData, 1);
    sync_data->shell = shell;

    /* Initialize everything, then go ahead and sync.  */

    if (! setup_progress_listener (sync_data))
        goto done;

    setup_dialog (sync_data);

    for (p = path_list, i = 1; p != NULL; p = p->next, i ++) {
        const char *path;

        path = (const char *) p->data;

        sync_folder (sync_data, path, i, g_slist_length (path_list));

        /* If the operation has been cancelled, stop syncing and
           return.  */
        if (sync_data->cancel) {
            /* FIXME: Do we want to pop up a dialog asking for
               confirmation?  */
            break;
        }
    }

 done:
    cleanup (sync_data);

    g_slist_foreach (path_list, (GFunc) g_free, NULL);
    g_slist_free (path_list);
}