path: root/calendar/gui/e-cal-view.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* 
 * Author : 
 *  Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright 2003, 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
 */

#include <config.h>
#include <string.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkinvisible.h>
#include <gtk/gtkstock.h>
#include <libgnome/gnome-i18n.h>
#include <gal/util/e-util.h>
#include "e-util/e-dialog-utils.h"
#include "cal-util/cal-util-marshal.h"
#include "cal-util/timeutil.h"
#include "evolution-activity-client.h"
#include "calendar-commands.h"
#include "calendar-config.h"
#include "comp-util.h"
#include "e-cal-model-calendar.h"
#include "e-cal-view.h"
#include "itip-utils.h"
#include "dialogs/delete-comp.h"
#include "dialogs/delete-error.h"
#include "dialogs/send-comp.h"
#include "dialogs/cancel-comp.h"
#include "dialogs/recur-comp.h"
#include "print.h"
#include "goto.h"
#include "ea-calendar.h"

/* Used for the status bar messages */
#define EVOLUTION_CALENDAR_PROGRESS_IMAGE "evolution-calendar-mini.png"
static GdkPixbuf *progress_icon[2] = { NULL, NULL };

struct _ECalViewPrivate {
    /* The GnomeCalendar we are associated to */
    GnomeCalendar *calendar;

    /* The calendar model we are monitoring */
    ECalModel *model;

    /* The activity client used to show messages on the status bar. */
    EvolutionActivityClient *activity;

    /* the invisible widget to manage the clipboard selections */
    GtkWidget *invisible;
    gchar *clipboard_selection;

    /* The popup menu */
    EPopupMenu *view_menu;

    /* The timezone. */
    icaltimezone *zone;
};

static void e_cal_view_class_init (ECalViewClass *klass);
static void e_cal_view_init (ECalView *cal_view, ECalViewClass *klass);
static void e_cal_view_destroy (GtkObject *object);

static GObjectClass *parent_class = NULL;
static GdkAtom clipboard_atom = GDK_NONE;

/* Signal IDs */
enum {
    SELECTION_CHANGED,
    TIMEZONE_CHANGED,
    EVENT_CHANGED,
    EVENT_ADDED,
    LAST_SIGNAL
};

static guint e_cal_view_signals[LAST_SIGNAL] = { 0 };

static void
e_cal_view_class_init (ECalViewClass *klass)
{
    GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    /* Create class' signals */
    e_cal_view_signals[SELECTION_CHANGED] =
        g_signal_new ("selection_changed",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECalViewClass, selection_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);
    e_cal_view_signals[TIMEZONE_CHANGED] =
        g_signal_new ("timezone_changed",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECalViewClass, timezone_changed),
                  NULL, NULL,
                  cal_util_marshal_VOID__POINTER_POINTER,
                  G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_POINTER);

    e_cal_view_signals[EVENT_CHANGED] =
        g_signal_new ("event_changed",
                  G_TYPE_FROM_CLASS (object_class),
                  G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
                  G_STRUCT_OFFSET (ECalViewClass, event_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__POINTER,
                  G_TYPE_NONE, 1,
                  G_TYPE_POINTER);

    e_cal_view_signals[EVENT_ADDED] =
        g_signal_new ("event_added",
                  G_TYPE_FROM_CLASS (object_class),
                  G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
                  G_STRUCT_OFFSET (ECalViewClass, event_added),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__POINTER,
                  G_TYPE_NONE, 1,
                  G_TYPE_POINTER);

    /* Method override */
    object_class->destroy = e_cal_view_destroy;

    klass->selection_changed = NULL;
    klass->event_changed = NULL;
    klass->event_added = NULL;

    klass->get_selected_events = NULL;
    klass->get_selected_time_range = NULL;
    klass->set_selected_time_range = NULL;
    klass->get_visible_time_range = NULL;
    klass->update_query = NULL;

    /* clipboard atom */
    if (!clipboard_atom)
        clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);

    /* init the accessibility support for e_day_view */
    e_cal_view_a11y_init ();
}

static void
model_changed_cb (ETableModel *etm, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_update_query (cal_view);
}

static void
model_row_changed_cb (ETableModel *etm, int row, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_update_query (cal_view);
}

static void
model_rows_changed_cb (ETableModel *etm, int row, int count, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_update_query (cal_view);
}

static void
selection_get (GtkWidget *invisible,
           GtkSelectionData *selection_data,
           guint info,
           guint time_stamp,
           ECalView *cal_view)
{
    if (cal_view->priv->clipboard_selection != NULL) {
        gtk_selection_data_set (selection_data,
                    GDK_SELECTION_TYPE_STRING,
                    8,
                    cal_view->priv->clipboard_selection,
                    strlen (cal_view->priv->clipboard_selection));
    }
}

static void
selection_clear_event (GtkWidget *invisible,
               GdkEventSelection *event,
               ECalView *cal_view)
{
    if (cal_view->priv->clipboard_selection != NULL) {
        g_free (cal_view->priv->clipboard_selection);
        cal_view->priv->clipboard_selection = NULL;
    }
}

static void
selection_received (GtkWidget *invisible,
            GtkSelectionData *selection_data,
            guint time,
            ECalView *cal_view)
{
    char *comp_str, *default_tzid;
    icalcomponent *icalcomp;
    icalcomponent_kind kind;
    CalComponent *comp;
    time_t selected_time_start, selected_time_end;
    struct icaltimetype itime;
    time_t tt_start, tt_end;
    struct icaldurationtype ic_dur;
    char *uid;
    icaltimezone *default_zone;
    CalClient *client;

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (selection_data->length < 0 ||
        selection_data->type != GDK_SELECTION_TYPE_STRING) {
        return;
    }

    comp_str = (char *) selection_data->data;
    icalcomp = icalparser_parse_string ((const char *) comp_str);
    if (!icalcomp)
        return;

    default_tzid = calendar_config_get_timezone ();
    client = e_cal_model_get_default_client (cal_view->priv->model);
    cal_client_get_timezone (client, default_tzid, &default_zone);

    /* check the type of the component */
    kind = icalcomponent_isa (icalcomp);
    if (kind != ICAL_VCALENDAR_COMPONENT &&
        kind != ICAL_VEVENT_COMPONENT &&
        kind != ICAL_VTODO_COMPONENT &&
        kind != ICAL_VJOURNAL_COMPONENT) {
        return;
    }

    e_cal_view_set_status_message (cal_view, _("Updating objects"));
    e_cal_view_get_selected_time_range (cal_view, &selected_time_start, &selected_time_end);

    if (kind == ICAL_VCALENDAR_COMPONENT) {
        icalcomponent_kind child_kind;
        icalcomponent *subcomp;

        subcomp = icalcomponent_get_first_component (icalcomp, ICAL_ANY_COMPONENT);
        while (subcomp) {
            child_kind = icalcomponent_isa (subcomp);
            if (child_kind == ICAL_VEVENT_COMPONENT ||
                child_kind == ICAL_VTODO_COMPONENT ||
                child_kind == ICAL_VJOURNAL_COMPONENT) {
                tt_start = icaltime_as_timet (icalcomponent_get_dtstart (subcomp));
                tt_end = icaltime_as_timet (icalcomponent_get_dtend (subcomp));
                ic_dur = icaldurationtype_from_int (tt_end - tt_start);
                itime = icaltime_from_timet_with_zone (selected_time_start,
                                       FALSE, default_zone);

                icalcomponent_set_dtstart (subcomp, itime);
                itime = icaltime_add (itime, ic_dur);
                icalcomponent_set_dtend (subcomp, itime);

                uid = cal_component_gen_uid ();
                comp = cal_component_new ();
                cal_component_set_icalcomponent (
                    comp, icalcomponent_new_clone (subcomp));
                cal_component_set_uid (comp, uid);

                cal_client_update_object (client, comp);
                if (itip_organizer_is_user (comp, client) &&
                    send_component_dialog ((GtkWindow *) gtk_widget_get_toplevel (GTK_WIDGET (cal_view)),
                               client, comp, TRUE)) {
                    itip_send_comp (CAL_COMPONENT_METHOD_REQUEST, comp,
                            client, NULL);
                }

                free (uid);
                g_object_unref (comp);
            }
            subcomp = icalcomponent_get_next_component (
                icalcomp, ICAL_ANY_COMPONENT);
        }

        icalcomponent_free (icalcomp);

    }
    else {
        tt_start = icaltime_as_timet (icalcomponent_get_dtstart (icalcomp));
        tt_end = icaltime_as_timet (icalcomponent_get_dtend (icalcomp));
        ic_dur = icaldurationtype_from_int (tt_end - tt_start);
        itime = icaltime_from_timet_with_zone (selected_time_start, FALSE, default_zone);

        icalcomponent_set_dtstart (icalcomp, itime);
        itime = icaltime_add (itime, ic_dur);
        icalcomponent_set_dtend (icalcomp, itime);

        uid = cal_component_gen_uid ();
        comp = cal_component_new ();
        cal_component_set_icalcomponent (
            comp, icalcomponent_new_clone (icalcomp));
        cal_component_set_uid (comp, uid);

        cal_client_update_object (client, comp);
        if (itip_organizer_is_user (comp, client) &&
            send_component_dialog ((GtkWindow *) gtk_widget_get_toplevel (GTK_WIDGET (cal_view)),
                       client, comp, TRUE)) {
            itip_send_comp (CAL_COMPONENT_METHOD_REQUEST, comp,
                    client, NULL);
        }

        free (uid);
        g_object_unref (comp);
    }

    e_cal_view_set_status_message (cal_view, NULL);
}

static void
e_cal_view_init (ECalView *cal_view, ECalViewClass *klass)
{
    cal_view->priv = g_new0 (ECalViewPrivate, 1);

    cal_view->priv->model = (ECalModel *) e_cal_model_calendar_new ();

    /* Set up the invisible widget for the clipboard selections */
    cal_view->priv->invisible = gtk_invisible_new ();
    gtk_selection_add_target (cal_view->priv->invisible,
                  clipboard_atom,
                  GDK_SELECTION_TYPE_STRING,
                  0);
    g_signal_connect (cal_view->priv->invisible, "selection_get",
              G_CALLBACK (selection_get), (gpointer) cal_view);
    g_signal_connect (cal_view->priv->invisible, "selection_clear_event",
              G_CALLBACK (selection_clear_event), (gpointer) cal_view);
    g_signal_connect (cal_view->priv->invisible, "selection_received",
              G_CALLBACK (selection_received), (gpointer) cal_view);

    cal_view->priv->clipboard_selection = NULL;
}

static void
e_cal_view_destroy (GtkObject *object)
{
    ECalView *cal_view = (ECalView *) object;

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (cal_view->priv) {
        if (cal_view->priv->model) {
            g_signal_handlers_disconnect_by_func (cal_view->priv->model, model_changed_cb, cal_view);
            g_object_unref (cal_view->priv->model);
            cal_view->priv->model = NULL;
        }

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

        if (cal_view->priv->invisible) {
            gtk_widget_destroy (cal_view->priv->invisible);
            cal_view->priv->invisible = NULL;
        }

        if (cal_view->priv->clipboard_selection) {
            g_free (cal_view->priv->clipboard_selection);
            cal_view->priv->clipboard_selection = NULL;
        }

        g_free (cal_view->priv);
        cal_view->priv = NULL;
    }

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

E_MAKE_TYPE (e_cal_view, "ECalView", ECalView, e_cal_view_class_init,
         e_cal_view_init, GTK_TYPE_TABLE);

GnomeCalendar *
e_cal_view_get_calendar (ECalView *cal_view)
{
    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), NULL);

    return cal_view->priv->calendar;
}

void
e_cal_view_set_calendar (ECalView *cal_view, GnomeCalendar *calendar)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    cal_view->priv->calendar = calendar;
}

ECalModel *
e_cal_view_get_model (ECalView *cal_view)
{
    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), NULL);

    return cal_view->priv->model;
}

void
e_cal_view_set_model (ECalView *cal_view, ECalModel *model)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));
    g_return_if_fail (E_IS_CAL_MODEL (model));

    if (cal_view->priv->model) {
        g_signal_handlers_disconnect_matched (cal_view->priv->model, G_SIGNAL_MATCH_DATA,
                              0, 0, 0, NULL, cal_view);
        g_object_unref (cal_view->priv->model);
    }

    cal_view->priv->model = model;
    g_object_ref (cal_view->priv->model);
    g_signal_connect (G_OBJECT (cal_view->priv->model), "model_changed", G_CALLBACK (model_changed_cb), cal_view);
    g_signal_connect (G_OBJECT (cal_view->priv->model), "model_row_changed", G_CALLBACK (model_row_changed_cb), cal_view);
    g_signal_connect (G_OBJECT (cal_view->priv->model), "model_rows_inserted", G_CALLBACK (model_rows_changed_cb), cal_view);
    g_signal_connect (G_OBJECT (cal_view->priv->model), "model_rows_deleted", G_CALLBACK (model_rows_changed_cb), cal_view);

    e_cal_view_update_query (cal_view);
}

icaltimezone *
e_cal_view_get_timezone (ECalView *cal_view)
{
    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), NULL);
    return cal_view->priv->zone;
}

void
e_cal_view_set_timezone (ECalView *cal_view, icaltimezone *zone)
{
    icaltimezone *old_zone;

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (zone == cal_view->priv->zone)
        return;

    old_zone = cal_view->priv->zone;
    cal_view->priv->zone = zone;
    g_signal_emit (G_OBJECT (cal_view), e_cal_view_signals[TIMEZONE_CHANGED], 0,
               old_zone, cal_view->priv->zone);
}

void
e_cal_view_set_status_message (ECalView *cal_view, const gchar *message)
{
    extern EvolutionShellClient *global_shell_client; /* ugly */

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (!message || !*message) {
        if (cal_view->priv->activity) {
            g_object_unref (cal_view->priv->activity);
            cal_view->priv->activity = NULL;
        }
    } else if (!cal_view->priv->activity) {
        int display;
        char *client_id = g_strdup_printf ("%p", cal_view);

        if (progress_icon[0] == NULL)
            progress_icon[0] = gdk_pixbuf_new_from_file (EVOLUTION_IMAGESDIR "/" EVOLUTION_CALENDAR_PROGRESS_IMAGE, NULL);
        cal_view->priv->activity = evolution_activity_client_new (
            global_shell_client, client_id,
            progress_icon, message, TRUE, &display);

        g_free (client_id);
    } else
        evolution_activity_client_update (cal_view->priv->activity, message, -1.0);
}

GList *
e_cal_view_get_selected_events (ECalView *cal_view)
{
    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), NULL);

    if (E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_selected_events)
        return E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_selected_events (cal_view);

    return NULL;
}

void
e_cal_view_get_selected_time_range (ECalView *cal_view, time_t *start_time, time_t *end_time)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_selected_time_range) {
        E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_selected_time_range (
            cal_view, start_time, end_time);
    }
}

void
e_cal_view_set_selected_time_range (ECalView *cal_view, time_t start_time, time_t end_time)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    if (E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->set_selected_time_range) {
        E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->set_selected_time_range (
            cal_view, start_time, end_time);
    }
}

gboolean
e_cal_view_get_visible_time_range (ECalView *cal_view, time_t *start_time, time_t *end_time)
{
    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), FALSE);

    if (E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_visible_time_range) {
        return E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->get_visible_time_range (
            cal_view, start_time, end_time);
    }

    return FALSE;
}

void
e_cal_view_update_query (ECalView *cal_view)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    e_cal_view_set_status_message (cal_view, _("Searching"));

    if (E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->update_query) {
        E_CAL_VIEW_CLASS (G_OBJECT_GET_CLASS (cal_view))->update_query (cal_view);
    }

    e_cal_view_set_status_message (cal_view, NULL);
}

void
e_cal_view_cut_clipboard (ECalView *cal_view)
{
    GList *selected, *l;
    const char *uid;

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    e_cal_view_set_status_message (cal_view, _("Deleting selected objects"));

    e_cal_view_copy_clipboard (cal_view);
    for (l = selected; l != NULL; l = l->next) {
        CalComponent *comp;

        ECalViewEvent *event = (ECalViewEvent *) l->data;

        if (!event)
            continue;

        comp = cal_component_new ();
        cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

        if (itip_organizer_is_user (comp, event->comp_data->client) 
            && cancel_component_dialog ((GtkWindow *) gtk_widget_get_toplevel (GTK_WIDGET (cal_view)),
                        event->comp_data->client, comp, TRUE))
            itip_send_comp (CAL_COMPONENT_METHOD_CANCEL, comp,
                    event->comp_data->client, NULL);

        cal_component_get_uid (comp, &uid);
        delete_error_dialog (cal_client_remove_object (event->comp_data->client, uid),
                     CAL_COMPONENT_EVENT);

        g_object_unref (comp);
    }

    e_cal_view_set_status_message (cal_view, NULL);

    g_list_free (selected);
}

void
e_cal_view_copy_clipboard (ECalView *cal_view)
{
    GList *selected, *l;
    gchar *comp_str;
    icalcomponent *vcal_comp;
    icalcomponent *new_icalcomp;
    ECalViewEvent *event;

    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    /* create top-level VCALENDAR component and add VTIMEZONE's */
    vcal_comp = cal_util_new_top_level ();
    for (l = selected; l != NULL; l = l->next) {
        event = (ECalViewEvent *) l->data;

        if (event)
            cal_util_add_timezones_from_component (vcal_comp, event->comp_data->icalcomp);
    }

    for (l = selected; l != NULL; l = l->next) {
        event = (ECalViewEvent *) l->data;

        new_icalcomp = icalcomponent_new_clone (event->comp_data->icalcomp);
        icalcomponent_add_component (vcal_comp, new_icalcomp);
    }

    /* copy the VCALENDAR to the clipboard */
    comp_str = icalcomponent_as_ical_string (vcal_comp);
    if (cal_view->priv->clipboard_selection != NULL)
        g_free (cal_view->priv->clipboard_selection);
    cal_view->priv->clipboard_selection = g_strdup (comp_str);
    gtk_selection_owner_set (cal_view->priv->invisible, clipboard_atom, GDK_CURRENT_TIME);

    /* free memory */
    icalcomponent_free (vcal_comp);
    g_list_free (selected);
}

void
e_cal_view_paste_clipboard (ECalView *cal_view)
{
    g_return_if_fail (E_IS_CAL_VIEW (cal_view));

    gtk_selection_convert (cal_view->priv->invisible,
                   clipboard_atom,
                   GDK_SELECTION_TYPE_STRING,
                   GDK_CURRENT_TIME);
}

static void
delete_event (ECalView *cal_view, ECalViewEvent *event)
{
    CalComponent *comp;
    CalComponentVType vtype;

    comp = cal_component_new ();
    cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
    vtype = cal_component_get_vtype (comp);

    if (delete_component_dialog (comp, FALSE, 1, vtype, GTK_WIDGET (cal_view))) {
        const char *uid;

        if (itip_organizer_is_user (comp, event->comp_data->client) 
            && cancel_component_dialog ((GtkWindow *) gtk_widget_get_toplevel (GTK_WIDGET (cal_view)),
                        event->comp_data->client,
                        comp, TRUE))
            itip_send_comp (CAL_COMPONENT_METHOD_CANCEL, comp,
                    event->comp_data->client, NULL);

        cal_component_get_uid (comp, &uid);
        if (!uid || !*uid) {
            g_object_unref (comp);
            return;
        }

        delete_error_dialog (
            cal_client_remove_object (event->comp_data->client, uid), CAL_COMPONENT_EVENT);
    }

    g_object_unref (comp);
}

void
e_cal_view_delete_selected_event (ECalView *cal_view)
{
    GList *selected;
    ECalViewEvent *event;

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    event = (ECalViewEvent *) selected->data;
    if (event)
        delete_event (cal_view, event);

    g_list_free (selected);
}

void
e_cal_view_delete_selected_events (ECalView *cal_view)
{
    GList *selected, *l;
    ECalViewEvent *event;

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    for (l = selected; l != NULL; l = l->next) {
        event = (ECalViewEvent *) l->data;
        if (event)
            delete_event (cal_view, event);
    }

    g_list_free (selected);
}

void
e_cal_view_delete_selected_occurrence (ECalView *cal_view)
{
    ECalViewEvent *event;
    GList *selected;

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    event = (ECalViewEvent *) selected->data;

    if (cal_util_component_is_instance (event->comp_data->icalcomp)) {
        const char *uid;

        uid = icalcomponent_get_uid (event->comp_data->icalcomp);
        delete_error_dialog (
            cal_client_remove_object_with_mod (event->comp_data->client, uid, CALOBJ_MOD_THIS),
            CAL_COMPONENT_EVENT);
    } else {
        CalComponent *comp;

        /* we must duplicate the CalComponent, or we won't know it has changed
           when we get the "update_event" signal */
        comp = cal_component_new ();
        cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
        cal_comp_util_add_exdate (comp, event->start, cal_view->priv->zone);

        if (cal_client_update_object (event->comp_data->client, comp)
            != CAL_CLIENT_RESULT_SUCCESS)
            g_message ("e_cal_view_delete_selected_occurrence(): Could not update the object!");

        g_object_unref (comp);
    }

    /* free memory */
    g_list_free (selected);
}

static void
on_new_appointment (GtkWidget *widget, gpointer user_data)
{
    time_t dtstart, dtend;
    ECalView *cal_view = (ECalView *) user_data;

    e_cal_view_get_selected_time_range (cal_view, &dtstart, &dtend);
    gnome_calendar_new_appointment_for (cal_view->priv->calendar, dtstart, dtend, FALSE, FALSE);
}

static void
on_new_event (GtkWidget *widget, gpointer user_data)
{
    time_t dtstart, dtend;
    ECalView *cal_view = (ECalView *) user_data;

    e_cal_view_get_selected_time_range (cal_view, &dtstart, &dtend);
    gnome_calendar_new_appointment_for (cal_view->priv->calendar, dtstart, dtend, TRUE, FALSE);
}

static void
on_new_meeting (GtkWidget *widget, gpointer user_data)
{
    time_t dtstart, dtend;
    ECalView *cal_view = (ECalView *) user_data;

    e_cal_view_get_selected_time_range (cal_view, &dtstart, &dtend);
    gnome_calendar_new_appointment_for (cal_view->priv->calendar, dtstart, dtend, FALSE, TRUE);
}

static void
on_new_task (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = (ECalView *) user_data;
    gnome_calendar_new_task (cal_view->priv->calendar);
}

static void
on_goto_date (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    goto_dialog (cal_view->priv->calendar);
}

static void
on_goto_today (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    calendar_goto_today (cal_view->priv->calendar);
}

static void
on_edit_appointment (GtkWidget *widget, gpointer user_data)
{
    GList *selected;
    ECalView *cal_view = E_CAL_VIEW (user_data);

    selected = e_cal_view_get_selected_events (cal_view);
    if (selected) {
        ECalViewEvent *event = (ECalViewEvent *) selected->data;

        if (event)
            gnome_calendar_edit_object (cal_view->priv->calendar, event->comp_data->client,
                            event->comp_data->icalcomp, FALSE);

        g_list_free (selected);
    }
}

static void
on_print (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;
    time_t start;
    GnomeCalendarViewType view_type;
    PrintView print_view;

    cal_view = E_CAL_VIEW (user_data);

    gnome_calendar_get_current_time_range (cal_view->priv->calendar, &start, NULL);
    view_type = gnome_calendar_get_view (cal_view->priv->calendar);

    switch (view_type) {
    case GNOME_CAL_DAY_VIEW :
        print_view = PRINT_VIEW_DAY;
        break;

    case GNOME_CAL_WORK_WEEK_VIEW :
    case GNOME_CAL_WEEK_VIEW:
        print_view = PRINT_VIEW_WEEK;
        break;

    case GNOME_CAL_MONTH_VIEW:
        print_view = PRINT_VIEW_MONTH;
        break;

    default:
        g_assert_not_reached ();
        return;
    }

    print_calendar (cal_view->priv->calendar, FALSE, start, print_view);
}

static void
on_save_as (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;
    GList *selected;
    char *filename;
    char *ical_string;
    FILE *file;
    ECalViewEvent *event;

    cal_view = E_CAL_VIEW (user_data);

    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    filename = e_file_dialog_save (_("Save as..."));
    if (filename == NULL)
        return;
    
    event = (ECalViewEvent *) selected->data;
    ical_string = cal_client_get_component_as_string (event->comp_data->client, event->comp_data->icalcomp);
    if (ical_string == NULL) {
        g_warning ("Couldn't convert item to a string");
        return;
    }
    
    file = fopen (filename, "w");
    if (file == NULL) {
        g_warning ("Couldn't save item");
        return;
    }
    
    fprintf (file, ical_string);
    g_free (ical_string);
    fclose (file);

    g_list_free (selected);
}

static void
on_print_event (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;
    GList *selected;
    ECalViewEvent *event;
    CalComponent *comp;

    cal_view = E_CAL_VIEW (user_data);
    selected = e_cal_view_get_selected_events (cal_view);
    if (!selected)
        return;

    event = (ECalViewEvent *) selected->data;

    comp = cal_component_new ();
    cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
    print_comp (comp, event->comp_data->client, FALSE);

    g_object_unref (comp);
}

static void
on_meeting (GtkWidget *widget, gpointer user_data)
{
    GList *selected;
    ECalView *cal_view = E_CAL_VIEW (user_data);

    selected = e_cal_view_get_selected_events (cal_view);
    if (selected) {
        ECalViewEvent *event = (ECalViewEvent *) selected->data;
        gnome_calendar_edit_object (cal_view->priv->calendar, event->comp_data->client, event->comp_data->icalcomp, TRUE);

        g_list_free (selected);
    }
}

static void
on_forward (GtkWidget *widget, gpointer user_data)
{
    GList *selected;
    ECalView *cal_view = E_CAL_VIEW (user_data);

    selected = e_cal_view_get_selected_events (cal_view);
    if (selected) {
        CalComponent *comp;
        ECalViewEvent *event = (ECalViewEvent *) selected->data;

        comp = cal_component_new ();
        cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
        itip_send_comp (CAL_COMPONENT_METHOD_PUBLISH, comp, event->comp_data->client, NULL);

        g_list_free (selected);
        g_object_unref (comp);
    }
}

static void
on_publish (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;
    icaltimezone *utc;
    time_t start = time (NULL), end;
    GList *comp_list, *client_list, *cl;

    cal_view = E_CAL_VIEW (user_data);

    utc = icaltimezone_get_utc_timezone ();
    start = time_day_begin_with_zone (start, utc);
    end = time_add_week_with_zone (start, 6, utc);

    client_list = e_cal_model_get_client_list (cal_view->priv->model);
    for (cl = client_list; cl != NULL; cl = cl->next) {
        comp_list = cal_client_get_free_busy ((CalClient *) cl->data, NULL, start, end);
        if (comp_list) {
            GList *l;

            for (l = comp_list; l; l = l->next) {
                CalComponent *comp = CAL_COMPONENT (l->data);
                itip_send_comp (CAL_COMPONENT_METHOD_PUBLISH, comp, (CalClient *) cl->data, NULL);

                g_object_unref (comp);
            }

            g_list_free (comp_list);
        }
    }

    g_list_free (client_list);
}

static void
on_settings (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;

    cal_view = E_CAL_VIEW (user_data);
    control_util_show_settings (cal_view->priv->calendar);
}

static void
on_delete_appointment (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;

    cal_view = E_CAL_VIEW (user_data);
    e_cal_view_delete_selected_event (cal_view);
}

static void
on_delete_occurrence (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view;

    cal_view = E_CAL_VIEW (user_data);
    e_cal_view_delete_selected_occurrence (cal_view);
}

static void
on_cut (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_cut_clipboard (cal_view);
}

static void
on_copy (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_copy_clipboard (cal_view);
}

static void
on_paste (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    e_cal_view_paste_clipboard (cal_view);
}

static void
on_unrecur_appointment (GtkWidget *widget, gpointer user_data)
{
    ECalView *cal_view = E_CAL_VIEW (user_data);

    gnome_calendar_unrecur_selection (cal_view->priv->calendar);
}

enum {
    /*
     * This is used to "flag" events that can not be editted
     */
    MASK_EDITABLE = 1,

    /*
     * To disable recurring actions to be displayed
     */
    MASK_RECURRING = 2,

    /*
     * To disable actions for non-recurring items to be displayed
     */
    MASK_SINGLE   = 4,

    /*
     * This is used to when an event is currently being edited
     * in another window and we want to disable the event
     * from being edited twice
     */
    MASK_EDITING  = 8,

    /*
     * This is used to when an event is already a meeting and
     * we want to disable the schedule meeting command
     */
    MASK_MEETING  = 16,

    /*
     * To disable cut and copy for meetings the user is not the
     * organizer of
     */
    MASK_MEETING_ORGANIZER = 32,

    /*
     * To disable things not valid for instances
     */
    MASK_INSTANCE = 64
};

static EPopupMenu main_items [] = {
    E_POPUP_ITEM (N_("New _Appointment..."), GTK_SIGNAL_FUNC (on_new_appointment), MASK_EDITABLE),
    E_POPUP_ITEM (N_("New All Day _Event"), GTK_SIGNAL_FUNC (on_new_event), MASK_EDITABLE),
    E_POPUP_ITEM (N_("New Meeting"), GTK_SIGNAL_FUNC (on_new_meeting), MASK_EDITABLE),
    E_POPUP_ITEM (N_("New Task"), GTK_SIGNAL_FUNC (on_new_task), MASK_EDITABLE),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Print..."), GTK_SIGNAL_FUNC (on_print), 0),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Paste"), GTK_SIGNAL_FUNC (on_paste), MASK_EDITABLE),

    E_POPUP_SEPARATOR,

    E_POPUP_SUBMENU (N_("Current View"), NULL, 0),
    
    E_POPUP_ITEM (N_("Go to _Today"), GTK_SIGNAL_FUNC (on_goto_today), 0),
    E_POPUP_ITEM (N_("_Go to Date..."), GTK_SIGNAL_FUNC (on_goto_date), 0),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Publish Free/Busy Information"), GTK_SIGNAL_FUNC (on_publish), 0),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Settings..."), GTK_SIGNAL_FUNC (on_settings), 0),

    E_POPUP_TERMINATOR
};

static EPopupMenu child_items [] = {
    E_POPUP_ITEM (N_("_Open"), GTK_SIGNAL_FUNC (on_edit_appointment), MASK_EDITING),
    E_POPUP_ITEM (N_("_Save As..."), GTK_SIGNAL_FUNC (on_save_as), MASK_EDITING),
    E_POPUP_ITEM (N_("_Print..."), GTK_SIGNAL_FUNC (on_print_event), MASK_EDITING),

    /* Only show this separator if one of the above is shown. */
    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("C_ut"), GTK_SIGNAL_FUNC (on_cut), MASK_EDITING | MASK_EDITABLE | MASK_MEETING_ORGANIZER),
    E_POPUP_ITEM (N_("_Copy"), GTK_SIGNAL_FUNC (on_copy), MASK_EDITING | MASK_MEETING_ORGANIZER),
    E_POPUP_ITEM (N_("_Paste"), GTK_SIGNAL_FUNC (on_paste), MASK_EDITABLE),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Schedule Meeting..."), GTK_SIGNAL_FUNC (on_meeting), MASK_EDITABLE | MASK_EDITING | MASK_MEETING),
    E_POPUP_ITEM (N_("_Forward as iCalendar..."), GTK_SIGNAL_FUNC (on_forward), MASK_EDITING),

    E_POPUP_SEPARATOR,

    E_POPUP_ITEM (N_("_Delete"), GTK_SIGNAL_FUNC (on_delete_appointment), MASK_EDITABLE | MASK_SINGLE | MASK_EDITING),
    E_POPUP_ITEM (N_("Make this Occurrence _Movable"), GTK_SIGNAL_FUNC (on_unrecur_appointment), MASK_RECURRING | MASK_EDITING | MASK_EDITABLE | MASK_INSTANCE),
    E_POPUP_ITEM (N_("Delete this _Occurrence"), GTK_SIGNAL_FUNC (on_delete_occurrence), MASK_RECURRING | MASK_EDITING | MASK_EDITABLE),
    E_POPUP_ITEM (N_("Delete _All Occurrences"), GTK_SIGNAL_FUNC (on_delete_appointment), MASK_RECURRING | MASK_EDITING | MASK_EDITABLE),

    E_POPUP_TERMINATOR
};

static void
free_view_popup (GtkWidget *widget, gpointer data)
{
    ECalView *cal_view = E_CAL_VIEW (data);

    if (cal_view->priv->view_menu == NULL)
        return;
    
    gnome_calendar_discard_view_popup (cal_view->priv->calendar, cal_view->priv->view_menu);
    cal_view->priv->view_menu = NULL;
}

static void
setup_popup_icons (EPopupMenu *context_menu)
{
    gint i;

    for (i = 0; context_menu[i].name; i++) {
        GtkWidget *pixmap_widget = NULL;

        if (!strcmp (context_menu[i].name, _("_Paste")))
            pixmap_widget = gtk_image_new_from_stock (GTK_STOCK_PASTE, GTK_ICON_SIZE_MENU);
        else if (!strcmp (context_menu[i].name, _("_Print...")))
            pixmap_widget = gtk_image_new_from_stock (GTK_STOCK_PRINT, GTK_ICON_SIZE_MENU);

        if (pixmap_widget)
            gtk_widget_show (pixmap_widget);
        context_menu[i].pixmap_widget = pixmap_widget;
    }
}

GtkMenu *
e_cal_view_create_popup_menu (ECalView *cal_view)
{
    gboolean being_edited, have_selection;
    GList *selected;
    EPopupMenu *context_menu;
    guint32 disable_mask = 0, hide_mask = 0;
    GtkMenu *popup;
    CalClient *client = NULL;

    g_return_val_if_fail (E_IS_CAL_VIEW (cal_view), NULL);

    /* get the selection */
    being_edited = FALSE;
    selected = e_cal_view_get_selected_events (cal_view);

    have_selection = GTK_WIDGET_HAS_FOCUS (cal_view) && selected != NULL;

    if (selected == NULL) {
        cal_view->priv->view_menu = gnome_calendar_setup_view_popup (cal_view->priv->calendar);
        main_items[9].submenu = cal_view->priv->view_menu;
        context_menu = main_items;

        client = e_cal_model_get_default_client (cal_view->priv->model);
    } else {
        ECalViewEvent *event;

        context_menu = child_items;

        event = (ECalViewEvent *) selected->data;
        if (cal_util_component_has_recurrences (event->comp_data->icalcomp))
            hide_mask |= MASK_SINGLE;
        else
            hide_mask |= MASK_RECURRING;

        if (cal_util_component_is_instance (event->comp_data->icalcomp))
            hide_mask |= MASK_INSTANCE;

        if (cal_util_component_has_organizer (event->comp_data->icalcomp)) {
            CalComponent *comp;

            disable_mask |= MASK_MEETING;

            comp = cal_component_new ();
            cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
            if (!itip_organizer_is_user (comp, event->comp_data->client))
                disable_mask |= MASK_MEETING_ORGANIZER;

            g_object_unref (comp);
        }

        client = event->comp_data->client;
    }

    if (cal_client_is_read_only (client))
        disable_mask |= MASK_EDITABLE;

    if (being_edited)
        disable_mask |= MASK_EDITING;

    setup_popup_icons (context_menu);
    popup = e_popup_menu_create (context_menu, disable_mask, hide_mask, cal_view);
    g_signal_connect (popup, "selection-done", G_CALLBACK (free_view_popup), cal_view);

    return popup;
}