path: root/calendar/gui/calendar-component.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* calendar-component.c
 *
 * Copyright (C) 2003  Novell, 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.
 *
 * Authors: Ettore Perazzoli <ettore@ximian.com>
 *          Rodrigo Moya <rodrigo@ximian.com>
 */

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

#include <string.h>
#include <errno.h>
#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-i18n.h>
#include <bonobo/bonobo-exception.h>
#include <libical/icalvcal.h>
#include "e-pub-utils.h"
#include "e-cal-view.h"
#include "calendar-config-keys.h"
#include "calendar-config.h"
#include "calendar-component.h"
#include "calendar-commands.h"
#include "control-factory.h"
#include "gnome-cal.h"
#include "migration.h"
#include "e-comp-editor-registry.h"
#include "comp-util.h"
#include "common/authentication.h"
#include "dialogs/calendar-setup.h"
#include "dialogs/comp-editor.h"
#include "dialogs/copy-source-dialog.h"
#include "dialogs/event-editor.h"
#include "widgets/misc/e-source-selector.h"


/* IDs for user creatable items */
#define CREATE_EVENT_ID        "event"
#define CREATE_MEETING_ID      "meeting"
#define CREATE_ALLDAY_EVENT_ID "allday-event"
#define CREATE_CALENDAR_ID      "calendar"

enum DndTargetType {
    DND_TARGET_TYPE_CALENDAR_LIST,
};
#define CALENDAR_TYPE "text/calendar"
#define XCALENDAR_TYPE "text/x-calendar"
static GtkTargetEntry drag_types[] = {
    { CALENDAR_TYPE, 0, DND_TARGET_TYPE_CALENDAR_LIST },
    { XCALENDAR_TYPE, 0, DND_TARGET_TYPE_CALENDAR_LIST }
};
static gint num_drag_types = sizeof(drag_types) / sizeof(drag_types[0]);

#define PARENT_TYPE bonobo_object_get_type ()
static BonoboObjectClass *parent_class = NULL;

struct _CalendarComponentPrivate {
    char *base_directory;
    char *config_directory;

    GConfClient *gconf_client;
    int gconf_notify_id;
    ESourceList *source_list;
    GSList *source_selection;
    
    GnomeCalendar *calendar;
    GtkWidget *source_selector;

    BonoboControl *view_control;

    ECal *create_ecal;

    GList *notifications;

    EActivityHandler *activity_handler;
};

/* FIXME This should be gnome cal likely */
extern ECompEditorRegistry *comp_editor_registry;

/* Utility functions.  */

static gboolean
is_in_selection (GSList *selection, ESource *source)
{
    GSList *l;
    
    for (l = selection; l; l = l->next) {
        ESource *selected_source = l->data;
        
        if (!strcmp (e_source_peek_uid (selected_source), e_source_peek_uid (source)))
            return TRUE;
    }

    return FALSE;
}

static gboolean
is_in_uids (GSList *uids, ESource *source)
{
    GSList *l;
    
    for (l = uids; l; l = l->next) {
        const char *uid = l->data;
        
        if (!strcmp (uid, e_source_peek_uid (source)))
            return TRUE;
    }

    return FALSE;
}

static void
update_uris_for_selection (CalendarComponent *calendar_component)
{
    CalendarComponentPrivate *priv;
    GSList *selection, *l, *uids_selected = NULL;
    
    priv = calendar_component->priv;
    
    selection = e_source_selector_get_selection (E_SOURCE_SELECTOR (priv->source_selector));

    for (l = priv->source_selection; l; l = l->next) {
        ESource *old_selected_source = l->data;

        if (!is_in_selection (selection, old_selected_source))
            gnome_calendar_remove_event_source (priv->calendar, old_selected_source);
    }

    for (l = selection; l; l = l->next) {
        ESource *selected_source = l->data;
        
        gnome_calendar_add_event_source (priv->calendar, selected_source);
        uids_selected = g_slist_append (uids_selected, (char *) e_source_peek_uid (selected_source));
    }
    
    e_source_selector_free_selection (priv->source_selection);
    priv->source_selection = selection;

    /* Save the selection for next time we start up */
    calendar_config_set_calendars_selected (uids_selected);
    g_slist_free (uids_selected);
}

static void
update_uri_for_primary_selection (CalendarComponent *calendar_component)
{
    CalendarComponentPrivate *priv;
    ESource *source;

    priv = calendar_component->priv;

    source = e_source_selector_peek_primary_selection (E_SOURCE_SELECTOR (priv->source_selector));
    if (!source)
        return;

    /* Set the default */
    gnome_calendar_set_default_source (priv->calendar, source);

    /* Make sure we are embedded first */
    calendar_control_sensitize_calendar_commands (priv->view_control, priv->calendar, TRUE);

    /* Save the selection for next time we start up */
    calendar_config_set_primary_calendar (e_source_peek_uid (source));
}

static void
update_selection (CalendarComponent *calendar_component)
{
    CalendarComponentPrivate *priv;
    GSList *selection, *uids_selected, *l;

    priv = calendar_component->priv;

    /* Get the selection in gconf */
    uids_selected = calendar_config_get_calendars_selected ();

    /* Remove any that aren't there any more */
    selection = e_source_selector_get_selection (E_SOURCE_SELECTOR (priv->source_selector));

    for (l = selection; l; l = l->next) {
        ESource *source = l->data;

        if (!is_in_uids (uids_selected, source)) 
            e_source_selector_unselect_source (E_SOURCE_SELECTOR (priv->source_selector), source);
    }
    
    e_source_selector_free_selection (selection);

    /* Make sure the whole selection is there */
    for (l = uids_selected; l; l = l->next) {
        char *uid = l->data;
        ESource *source;

        source = e_source_list_peek_source_by_uid (priv->source_list, uid);
        if (source) 
            e_source_selector_select_source (E_SOURCE_SELECTOR (priv->source_selector), source);
        
        g_free (uid);
    }
    g_slist_free (uids_selected);
}

static void
update_primary_selection (CalendarComponent *calendar_component)
{
    CalendarComponentPrivate *priv;
    ESource *source = NULL;
    char *uid;

    priv = calendar_component->priv;

    uid = calendar_config_get_primary_calendar ();
    if (uid) {
        source = e_source_list_peek_source_by_uid (priv->source_list, uid);
        g_free (uid);
    }
    
    if (source) {
        e_source_selector_set_primary_selection (E_SOURCE_SELECTOR (priv->source_selector), source);
    } else {
        /* Try to create a default if there isn't one */
        source = e_source_list_peek_source_any (priv->source_list);
        if (source)
            e_source_selector_set_primary_selection (E_SOURCE_SELECTOR (priv->source_selector), source);
    }
}

/* Callbacks.  */
static void
add_popup_menu_item (GtkMenu *menu, const char *label, const char *pixmap,
             GCallback callback, gpointer user_data, gboolean sensitive)
{
    GtkWidget *item, *image;

    if (pixmap) {
        item = gtk_image_menu_item_new_with_label (label);

        /* load the image */
        if (g_file_test (pixmap, G_FILE_TEST_EXISTS))
            image = gtk_image_new_from_file (pixmap);
        else
            image = gtk_image_new_from_stock (pixmap, GTK_ICON_SIZE_MENU);

        if (image) {
            gtk_widget_show (image);
            gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
        }
    } else {
        item = gtk_menu_item_new_with_label (label);
    }

    if (callback)
        g_signal_connect (G_OBJECT (item), "activate", callback, user_data);

    if (!sensitive)
        gtk_widget_set_sensitive (item, FALSE);

    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
    gtk_widget_show (item);
}

static void
copy_calendar_cb (GtkWidget *widget, CalendarComponent *comp)
{
    ESource *selected_source;
    CalendarComponentPrivate *priv;

    priv = comp->priv;
    
    selected_source = e_source_selector_peek_primary_selection (E_SOURCE_SELECTOR (priv->source_selector));
    if (!selected_source)
        return;

    copy_source_dialog (GTK_WINDOW (gtk_widget_get_toplevel (widget)), selected_source, E_CAL_SOURCE_TYPE_EVENT);
}

static void
delete_calendar_cb (GtkWidget *widget, CalendarComponent *comp)
{
    ESource *selected_source;
    CalendarComponentPrivate *priv;
    GtkWidget *dialog;

    priv = comp->priv;
    
    selected_source = e_source_selector_peek_primary_selection (E_SOURCE_SELECTOR (priv->source_selector));
    if (!selected_source)
        return;

    /* create the confirmation dialog */
    dialog = gtk_message_dialog_new (
        GTK_WINDOW (gtk_widget_get_toplevel (widget)),
        GTK_DIALOG_MODAL,
        GTK_MESSAGE_QUESTION,
        GTK_BUTTONS_YES_NO,
        _("Calendar '%s' will be removed. Are you sure you want to continue?"),
        e_source_peek_name (selected_source));
    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_YES) {
        ECal *cal;
        char *uri;

        /* first, ask the backend to remove the calendar */
        uri = e_source_get_uri (selected_source);
        cal = e_cal_model_get_client_for_uri (gnome_calendar_get_calendar_model (priv->calendar), uri);
        g_free (uri);
        if (cal) {
            if (e_cal_remove (cal, NULL)) {
                if (e_source_selector_source_is_selected (E_SOURCE_SELECTOR (priv->source_selector),
                                      selected_source)) {
                    gnome_calendar_remove_event_source (priv->calendar, selected_source);
                    e_source_selector_unselect_source (E_SOURCE_SELECTOR (priv->source_selector),
                                       selected_source);
                }
        
                e_source_group_remove_source (e_source_peek_group (selected_source), selected_source);
                e_source_list_sync (priv->source_list, NULL);
            }
        }
    }

    gtk_widget_destroy (dialog);
}

static void
new_calendar_cb (GtkWidget *widget, CalendarComponent *comp)
{
    calendar_setup_new_calendar (GTK_WINDOW (gtk_widget_get_toplevel (widget)));
}

static void
edit_calendar_cb (GtkWidget *widget, CalendarComponent *comp)
{
    CalendarComponentPrivate *priv;
    ESource *selected_source;

    priv = comp->priv;
    
    selected_source = e_source_selector_peek_primary_selection (E_SOURCE_SELECTOR (priv->source_selector));
    if (!selected_source)
        return;

    calendar_setup_edit_calendar (GTK_WINDOW (gtk_widget_get_toplevel (widget)), selected_source);
}

static void
fill_popup_menu_cb (ESourceSelector *selector, GtkMenu *menu, CalendarComponent *comp)
{
    gboolean sensitive;

    sensitive = e_source_selector_peek_primary_selection (E_SOURCE_SELECTOR (comp->priv->source_selector)) ?
        TRUE : FALSE;

    add_popup_menu_item (menu, _("New Calendar"), EVOLUTION_IMAGESDIR "/evolution-calendar-mini.png",
                 G_CALLBACK (new_calendar_cb), comp, TRUE);
    add_popup_menu_item (menu, _("Copy"), EVOLUTION_IMAGESDIR "/folder-copy-16.png",
                 G_CALLBACK (copy_calendar_cb), comp, sensitive);
    add_popup_menu_item (menu, _("Delete"), GTK_STOCK_DELETE, G_CALLBACK (delete_calendar_cb), comp, sensitive);
    add_popup_menu_item (menu, _("Properties..."), NULL, G_CALLBACK (edit_calendar_cb), comp, sensitive);
}

static void
source_selection_changed_cb (ESourceSelector *selector, 
                 CalendarComponent *calendar_component)
{
    update_uris_for_selection (calendar_component);
}

static void
primary_source_selection_changed_cb (ESourceSelector *selector,
                     CalendarComponent *calendar_component)
{
    CalendarComponentPrivate *priv = calendar_component->priv;

    if (priv->create_ecal) {
        g_object_unref (priv->create_ecal);
        priv->create_ecal = NULL;
    }

    update_uri_for_primary_selection (calendar_component);
}

static void
config_selection_changed_cb (GConfClient *client, guint id, GConfEntry *entry, gpointer data)
{
    update_selection (data);
}


static void
config_primary_selection_changed_cb (GConfClient *client, guint id, GConfEntry *entry, gpointer data)
{
    update_primary_selection (data);
}

static gboolean
init_calendar_publishing_cb (gpointer data)
{   
    /* Publish if it is time to publish again */
    e_pub_publish (FALSE);

    return FALSE;
}

static void
conf_changed_callback (GConfClient *client,
               unsigned int connection_id,
               GConfEntry *entry,
               void *user_data)
{
    /* publish config changed, so publish */
    e_pub_publish (TRUE);
}

/* GObject methods.  */

static void
impl_dispose (GObject *object)
{
    CalendarComponentPrivate *priv = CALENDAR_COMPONENT (object)->priv;
    GList *l;
    
    if (priv->source_list != NULL) {
        g_object_unref (priv->source_list);
        priv->source_list = NULL;
    }

    if (priv->source_selection != NULL) {
        e_source_selector_free_selection (priv->source_selection);
        priv->source_selection = NULL;
    }
    
    if (priv->gconf_client != NULL) {
        g_object_unref (priv->gconf_client);
        priv->gconf_client = NULL;
    }

    if (priv->create_ecal) {
        g_object_unref (priv->create_ecal);
        priv->create_ecal = NULL;
    }
        
    for (l = priv->notifications; l; l = l->next)
        calendar_config_remove_notification (GPOINTER_TO_UINT (l->data));
    g_list_free (priv->notifications);
    priv->notifications = NULL;

    if (priv->activity_handler != NULL) {
        g_object_unref (priv->activity_handler);
        priv->activity_handler = NULL;
    }

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

static void
impl_finalize (GObject *object)
{
    CalendarComponentPrivate *priv = CALENDAR_COMPONENT (object)->priv;

    g_free (priv->base_directory);
    g_free (priv->config_directory);
    g_free (priv);

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


/* Evolution::Component CORBA methods.  */

static CORBA_boolean
impl_upgradeFromVersion (PortableServer_Servant servant,
             CORBA_short major,
             CORBA_short minor,
             CORBA_short revision,
             CORBA_Environment *ev)
{
    CalendarComponent *calendar_component = CALENDAR_COMPONENT (bonobo_object_from_servant (servant));

    migrate_calendars (calendar_component, major, minor, revision);

    return CORBA_TRUE;
}

static void
init_calendar_publishing (CalendarComponent *calendar_component)
{
    guint idle_id = 0;
    CalendarComponentPrivate *priv;
    
    priv = calendar_component->priv;
    
    gconf_client_add_dir (priv->gconf_client, CALENDAR_CONFIG_PUBLISH, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);

    priv->gconf_notify_id
        = gconf_client_notify_add (priv->gconf_client, CALENDAR_CONFIG_PUBLISH,
                       (GConfClientNotifyFunc) conf_changed_callback, NULL,
                       NULL, NULL);
    
    idle_id = g_idle_add ((GSourceFunc) init_calendar_publishing_cb, GINT_TO_POINTER (idle_id));
}

static gboolean
selector_tree_drag_drop (GtkWidget *widget, 
             GdkDragContext *context, 
             int x, 
             int y, 
             guint time, 
             CalendarComponent *component)
{
    GtkTreeViewColumn *column;
    int cell_x;
    int cell_y;
    GtkTreePath *path;
    GtkTreeModel *model;
    GtkTreeIter iter;
    gpointer data;
    
    if (!gtk_tree_view_get_path_at_pos  (GTK_TREE_VIEW (widget), x, y, &path, 
                         &column, &cell_x, &cell_y))
        return FALSE;
    
    
    model = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));

    if (!gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_path_free (path);
        return FALSE;
    }

    gtk_tree_model_get (model, &iter, 0, &data, -1);
    
    if (E_IS_SOURCE_GROUP (data)) {
        g_object_unref (data);
        gtk_tree_path_free (path);
        return FALSE;
    }
    
    gtk_drag_get_data (widget, context, gdk_atom_intern (CALENDAR_TYPE, FALSE), time);
    gtk_tree_path_free (path);
    return TRUE;
}
    
static gboolean
selector_tree_drag_motion (GtkWidget *widget,
               GdkDragContext *context,
               int x,
               int y)
{
    GtkTreePath *path;
    GtkTreeViewDropPosition pos;
    gpointer data;
    GtkTreeModel *model;
    GtkTreeIter iter;
    
    if (!gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
                        x, y, &path, &pos))
        return FALSE;
    
    model = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
    
    if (!gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_path_free (path);
        return FALSE;
    }
    
    gtk_tree_model_get (model, &iter, 0, &data, -1);

    if (E_IS_SOURCE_GROUP (data) || e_source_get_readonly (data)) {
        g_object_unref (data);
        gtk_tree_path_free (path);
        return FALSE;
    }   
    
    gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), path, GTK_TREE_VIEW_DROP_INTO_OR_BEFORE);
    
    gtk_tree_path_free (path);
    return TRUE;
}

static gboolean
update_single_object (ECal *client, icalcomponent *icalcomp)
{
    char *uid;
    icalcomponent *tmp_icalcomp;

    uid = (char *) icalcomponent_get_uid (icalcomp);
    
    if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
        return e_cal_modify_object (client, icalcomp, CALOBJ_MOD_ALL, NULL);

    return e_cal_create_object (client, icalcomp, &uid, NULL);  
}

static gboolean
update_objects (ECal *client, icalcomponent *icalcomp)
{
    icalcomponent *subcomp;
    icalcomponent_kind kind;

    kind = icalcomponent_isa (icalcomp);
    if (kind == ICAL_VTODO_COMPONENT || kind == ICAL_VEVENT_COMPONENT)
        return update_single_object (client, icalcomp);
    else if (kind != ICAL_VCALENDAR_COMPONENT)
        return FALSE;

    subcomp = icalcomponent_get_first_component (icalcomp, ICAL_ANY_COMPONENT);
    while (subcomp) {
        gboolean success;
        
        kind = icalcomponent_isa (subcomp);
        if (kind == ICAL_VTIMEZONE_COMPONENT) {
            icaltimezone *zone;

            zone = icaltimezone_new ();
            icaltimezone_set_component (zone, subcomp);

            success = e_cal_add_timezone (client, zone, NULL);
            icaltimezone_free (zone, 1);
            if (!success)
                return success;
        } else if (kind == ICAL_VTODO_COMPONENT ||
               kind == ICAL_VEVENT_COMPONENT) {
            success = update_single_object (client, subcomp);
            if (!success)
                return success;
        }

        subcomp = icalcomponent_get_next_component (icalcomp, ICAL_ANY_COMPONENT);
    }

    return TRUE;
}

static gboolean 
selector_tree_drag_data_received (GtkWidget *widget, 
                  GdkDragContext *context, 
                  gint x, 
                  gint y, 
                  GtkSelectionData *data,
                  guint info,
                  guint time,
                  gpointer user_data)
{
    GtkTreePath *path;
    GtkTreeViewDropPosition pos;
    gpointer source;
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean ret = FALSE;

    if (!gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
                        x, y, &path, &pos))
        return FALSE;
    
    model = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
    
    if (!gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_path_free (path);
        return FALSE;
    }
    
    gtk_tree_model_get (model, &iter, 0, &source, -1);

    if (E_IS_SOURCE_GROUP (source) || e_source_get_readonly (source)) {
        g_object_unref (source);
        gtk_tree_path_free (path);
        return FALSE;
    }   
    
    
    if ((data->length >= 0) && (data->format == 8)) {
        gtk_drag_finish (context, FALSE, TRUE, time);
    } else {
        gtk_drag_finish (context, FALSE, FALSE, time);
    }
    gtk_tree_path_free (path);

    
    //e_source_selector_set_primary_selection (E_SOURCE_SELECTOR (widget), source);
    {
        icalcomponent *ical_comp = NULL;
        icalvcal_defaults defaults = { 0 };
        VObject *vcal;
        ECal *client = NULL;
            
            
        vcal = Parse_MIME (data->data, data->length);
        if (vcal) {
            ical_comp = icalvcal_convert_with_defaults (vcal, &defaults);
            cleanVObject (vcal);
            
            if (ical_comp)
                client = auth_new_cal_from_source (source, 
                                   E_CAL_SOURCE_TYPE_EVENT);
            
            if (client) {
                if (e_cal_open (client, TRUE, NULL)) {
                    /* FIXME should the drag status be set here? */
                    update_objects (client, ical_comp);
                }

                g_object_unref (client);
            }
        }
    }

    return ret;
}   

static void
selector_tree_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time, gpointer data)
{
    gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), 
                    NULL, GTK_TREE_VIEW_DROP_BEFORE);
}

static void
impl_createControls (PortableServer_Servant servant,
             Bonobo_Control *corba_sidebar_control,
             Bonobo_Control *corba_view_control,
             Bonobo_Control *corba_statusbar_control,
             CORBA_Environment *ev)
{
    CalendarComponent *calendar_component = CALENDAR_COMPONENT (bonobo_object_from_servant (servant));
    CalendarComponentPrivate *priv;
    GtkWidget *selector_scrolled_window;
    GtkWidget *statusbar_widget;
    BonoboControl *sidebar_control;
    BonoboControl *statusbar_control;
    guint not;
    
    priv = calendar_component->priv;
    
    /* Create sidebar selector */
    priv->source_selector = e_source_selector_new (calendar_component->priv->source_list);

    g_signal_connect (priv->source_selector, "drag-motion", G_CALLBACK (selector_tree_drag_motion), 
              calendar_component);
    g_signal_connect (priv->source_selector, "drag-leave", G_CALLBACK (selector_tree_drag_leave), 
              calendar_component);
    g_signal_connect (priv->source_selector, "drag-drop", G_CALLBACK (selector_tree_drag_drop), 
              calendar_component);
    g_signal_connect (priv->source_selector, "drag-data-received", 
              G_CALLBACK (selector_tree_drag_data_received), calendar_component);

    gtk_drag_dest_set(priv->source_selector, GTK_DEST_DEFAULT_ALL, drag_types,
              num_drag_types, GDK_ACTION_COPY | GDK_ACTION_MOVE);

    gtk_widget_show (priv->source_selector);

    selector_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_container_add (GTK_CONTAINER (selector_scrolled_window), priv->source_selector);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (selector_scrolled_window),
                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (selector_scrolled_window),
                         GTK_SHADOW_IN);
    gtk_widget_show (selector_scrolled_window);

    sidebar_control = bonobo_control_new (selector_scrolled_window);

    /* Create main calendar view */
    /* FIXME Instead of returning, we should make a control with a
     * label describing the problem */
    priv->view_control = control_factory_new_control ();
    if (!priv->view_control) {
        g_warning (G_STRLOC ": could not create the control!");
        bonobo_exception_set (ev, ex_GNOME_Evolution_Component_Failed);
        return;
    }

    priv->calendar = (GnomeCalendar *) bonobo_control_get_widget (priv->view_control);

    statusbar_widget = e_task_bar_new ();
    e_activity_handler_attach_task_bar (priv->activity_handler, E_TASK_BAR (statusbar_widget));
    gtk_widget_show (statusbar_widget);
    statusbar_control = bonobo_control_new (statusbar_widget);

    /* Initialize Calendar Publishing */
    init_calendar_publishing (calendar_component);
    
    /* connect after setting the initial selections, or we'll get unwanted calls
       to calendar_control_sensitize_calendar_commands */
    g_signal_connect_object (priv->source_selector, "selection_changed",
                 G_CALLBACK (source_selection_changed_cb), 
                 G_OBJECT (calendar_component), 0);
    g_signal_connect_object (priv->source_selector, "primary_selection_changed",
                 G_CALLBACK (primary_source_selection_changed_cb), 
                 G_OBJECT (calendar_component), 0);
    g_signal_connect_object (priv->source_selector, "fill_popup_menu",
                 G_CALLBACK (fill_popup_menu_cb),
                 G_OBJECT (calendar_component), 0);

    /* Load the selection from the last run */
    update_selection (calendar_component);  
    update_primary_selection (calendar_component);

    /* If it gets fiddled with update */
    not = calendar_config_add_notification_calendars_selected (config_selection_changed_cb, 
                                   calendar_component);
    priv->notifications = g_list_prepend (priv->notifications, GUINT_TO_POINTER (not));

    not = calendar_config_add_notification_primary_calendar (config_primary_selection_changed_cb, 
                                 calendar_component);
    priv->notifications = g_list_prepend (priv->notifications, GUINT_TO_POINTER (not));

    /* Return the controls */
    *corba_sidebar_control = CORBA_Object_duplicate (BONOBO_OBJREF (sidebar_control), ev);
    *corba_view_control = CORBA_Object_duplicate (BONOBO_OBJREF (priv->view_control), ev);
    *corba_statusbar_control = CORBA_Object_duplicate (BONOBO_OBJREF (statusbar_control), ev);
}


static GNOME_Evolution_CreatableItemTypeList *
impl__get_userCreatableItems (PortableServer_Servant servant,
                  CORBA_Environment *ev)
{
    GNOME_Evolution_CreatableItemTypeList *list = GNOME_Evolution_CreatableItemTypeList__alloc ();

    list->_length  = 4;
    list->_maximum = list->_length;
    list->_buffer  = GNOME_Evolution_CreatableItemTypeList_allocbuf (list->_length);

    CORBA_sequence_set_release (list, FALSE);

    list->_buffer[0].id = CREATE_EVENT_ID;
    list->_buffer[0].description = _("New appointment");
    list->_buffer[0].menuDescription = _("_Appointment");
    list->_buffer[0].tooltip = _("Create a new appointment");
    list->_buffer[0].menuShortcut = 'a';
    list->_buffer[0].iconName = "new_appointment.xpm";

    list->_buffer[1].id = CREATE_MEETING_ID;
    list->_buffer[1].description = _("New meeting");
    list->_buffer[1].menuDescription = _("M_eeting");
    list->_buffer[1].tooltip = _("Create a new meeting request");
    list->_buffer[1].menuShortcut = 'e';
    list->_buffer[1].iconName = "meeting-request-16.png";

    list->_buffer[2].id = CREATE_ALLDAY_EVENT_ID;
    list->_buffer[2].description = _("New all day appointment");
    list->_buffer[2].menuDescription = _("All _Day Appointment");
    list->_buffer[2].tooltip = _("Create a new all-day appointment");
    list->_buffer[2].menuShortcut = 'd';
    list->_buffer[2].iconName = "new_all_day_event.png";

    list->_buffer[3].id = CREATE_CALENDAR_ID;
    list->_buffer[3].description = _("New calendar");
    list->_buffer[3].menuDescription = _("C_alendar");
    list->_buffer[3].tooltip = _("Create a new calendar");
    list->_buffer[3].menuShortcut = 'a';
    list->_buffer[3].iconName = "evolution-calendar-mini.png";

    return list;
}

static void
config_create_ecal_changed_cb (GConfClient *client, guint id, GConfEntry *entry, gpointer data)
{   
    CalendarComponent *calendar_component = data;
    CalendarComponentPrivate *priv;
    
    priv = calendar_component->priv;

    g_object_unref (priv->create_ecal);
    priv->create_ecal = NULL;
    
    priv->notifications = g_list_remove (priv->notifications, GUINT_TO_POINTER (id));
}

static gboolean
setup_create_ecal (CalendarComponent *calendar_component) 
{
    CalendarComponentPrivate *priv;
    ESource *source = NULL;
    char *uid;
    guint not;
    
    priv = calendar_component->priv;

    if (priv->create_ecal)
        return TRUE; 

    /* Try to use the client from the calendar first to avoid re-opening things */
    if (priv->calendar) {
        ECal *default_ecal;
        
        default_ecal = gnome_calendar_get_default_client (priv->calendar);
        if (default_ecal) {
            priv->create_ecal = g_object_ref (default_ecal);
            return TRUE;
        }
    }
    
    /* Get the current primary calendar, or try to set one if it doesn't already exist */       
    uid = calendar_config_get_primary_calendar ();
    if (uid) {
        source = e_source_list_peek_source_by_uid (priv->source_list, uid);
        g_free (uid);

        priv->create_ecal = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_EVENT);
    } 

    if (!priv->create_ecal) {
        /* Try to create a default if there isn't one */
        source = e_source_list_peek_source_any (priv->source_list);
        if (source)
            priv->create_ecal = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_EVENT);
    }
        
    if (priv->create_ecal) {
        if (!e_cal_open (priv->create_ecal, FALSE, NULL)) {
            GtkWidget *dialog;
            
            dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
                             GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
                             _("Unable to open the calendar '%s' for creating events and meetings"), 
                               e_source_peek_name (source));
            gtk_dialog_run (GTK_DIALOG (dialog));
            gtk_widget_destroy (dialog);

            return FALSE;
        }
    } else {
        GtkWidget *dialog;
            
        dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
                         GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
                         _("There is no calendar available for creating events and meetings"));
        gtk_dialog_run (GTK_DIALOG (dialog));
        gtk_widget_destroy (dialog);

        return FALSE;
    }       

    /* Handle the fact it may change on us */
    not = calendar_config_add_notification_primary_calendar (config_create_ecal_changed_cb, 
                                 calendar_component);
    priv->notifications = g_list_prepend (priv->notifications, GUINT_TO_POINTER (not));

    /* Save the primary source for use elsewhere */
    calendar_config_set_primary_calendar (e_source_peek_uid (source));

    return TRUE;
}

static void
create_new_event (CalendarComponent *calendar_component, gboolean is_allday, gboolean is_meeting, CORBA_Environment *ev)
{
    CalendarComponentPrivate *priv = calendar_component->priv;
    gboolean read_only;
    ECalendarView *view;

    if (!setup_create_ecal (calendar_component)) {
        bonobo_exception_set (ev, ex_GNOME_Evolution_Component_Failed);
        return;
    }
    if (!e_cal_is_read_only (priv->create_ecal, &read_only, NULL) || read_only)
        return;

    if (priv->calendar && (view = E_CALENDAR_VIEW (gnome_calendar_get_current_view_widget (priv->calendar))))
        e_calendar_view_new_appointment_full (view, is_allday, is_meeting);
    else {
        ECalComponent *comp;
        EventEditor *editor;

        editor = event_editor_new (priv->create_ecal);
        comp = cal_comp_event_new_with_current_time (priv->create_ecal, is_allday);

        comp_editor_edit_comp (COMP_EDITOR (editor), comp);
        if (is_meeting)
            event_editor_show_meeting (editor);
        comp_editor_focus (COMP_EDITOR (editor));

        e_comp_editor_registry_add (comp_editor_registry, COMP_EDITOR (editor), TRUE);
    }
}

static void
impl_requestCreateItem (PortableServer_Servant servant,
            const CORBA_char *item_type_name,
            CORBA_Environment *ev)
{
    CalendarComponent *calendar_component = CALENDAR_COMPONENT (bonobo_object_from_servant (servant));
    
    if (strcmp (item_type_name, CREATE_EVENT_ID) == 0)
        create_new_event (calendar_component, FALSE, FALSE, ev);
    else if (strcmp (item_type_name, CREATE_ALLDAY_EVENT_ID) == 0)
        create_new_event (calendar_component, TRUE, FALSE, ev);
    else if (strcmp (item_type_name, CREATE_MEETING_ID) == 0)
        create_new_event (calendar_component, FALSE, TRUE, ev);
    else if (strcmp (item_type_name, CREATE_CALENDAR_ID) == 0)
        calendar_setup_new_calendar (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (calendar_component->priv->calendar))));
    else
        bonobo_exception_set (ev, ex_GNOME_Evolution_Component_UnknownType);
}

/* Initialization.  */

static void
calendar_component_class_init (CalendarComponentClass *class)
{
    POA_GNOME_Evolution_Component__epv *epv = &class->epv;
    GObjectClass *object_class = G_OBJECT_CLASS (class);

    parent_class = g_type_class_peek_parent (class);

    epv->upgradeFromVersion      = impl_upgradeFromVersion;
    epv->createControls          = impl_createControls;
    epv->_get_userCreatableItems = impl__get_userCreatableItems;
    epv->requestCreateItem       = impl_requestCreateItem;

    object_class->dispose  = impl_dispose;
    object_class->finalize = impl_finalize;
}

static void
calendar_component_init (CalendarComponent *component)
{
    CalendarComponentPrivate *priv;

    priv = g_new0 (CalendarComponentPrivate, 1);

    priv->base_directory = g_build_filename (g_get_home_dir (), ".evolution", NULL);
    priv->config_directory = g_build_filename (g_get_home_dir (),
                           ".evolution", "calendar", "config",
                           NULL);

    /* EPFIXME: Should use a custom one instead?  Also we should add
     * calendar_component_peek_gconf_client().  */
    priv->gconf_client = gconf_client_get_default ();

    priv->source_list = e_source_list_new_for_gconf (priv->gconf_client,
                             "/apps/evolution/calendar/sources");

    priv->activity_handler = e_activity_handler_new ();

    component->priv = priv;
}


/* Public API.  */

CalendarComponent *
calendar_component_peek (void)
{
    static CalendarComponent *component = NULL;

    if (component == NULL) {
        component = g_object_new (calendar_component_get_type (), NULL);

        if (e_mkdir_hier (calendar_component_peek_config_directory (component), 0777) != 0) {
            g_warning (G_STRLOC ": Cannot create directory %s: %s",
                   calendar_component_peek_config_directory (component),
                   g_strerror (errno));
            g_object_unref (component);
            component = NULL;
        }
    }

    return component;
}

const char *
calendar_component_peek_base_directory (CalendarComponent *component)
{
    return component->priv->base_directory;
}

const char *
calendar_component_peek_config_directory (CalendarComponent *component)
{
    return component->priv->config_directory;
}

ESourceList *
calendar_component_peek_source_list (CalendarComponent *component)
{
    return component->priv->source_list;
}

ESourceSelector *
calendar_component_peek_source_selector (CalendarComponent *component)
{
    return component->priv->source_selector;
}

EActivityHandler *
calendar_component_peek_activity_handler (CalendarComponent *component)
{
    return component->priv->activity_handler;
}


BONOBO_TYPE_FUNC_FULL (CalendarComponent, GNOME_Evolution_Component, PARENT_TYPE, calendar_component)