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

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Evolution calendar - Commands for the calendar GUI control
 *
 * Copyright (C) 1998 The Free Software Foundation
 * Copyright (C) 2000 Ximian, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Authors: Miguel de Icaza <miguel@ximian.com>
 *          Federico Mena-Quintero <federico@ximian.com>
 *          Seth Alves <alves@hungry.com>
 *
 * 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 <pwd.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gtk/gtkfilesel.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>

#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-util.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <libgnomeui/gnome-messagebox.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnome/gnome-util.h>
#include <libgnome/gnome-i18n.h>
#include <bonobo/bonobo-ui-util.h>
#include <bonobo/bonobo-exception.h>
#include <cal-util/timeutil.h>
#include "shell/Evolution.h"
#include "calendar-commands.h"
#include "calendar-config.h"
#include "gnome-cal.h"
#include "goto.h"
#include "print.h"
#include "dialogs/cal-prefs-dialog.h"
#include "itip-utils.h"
#include "evolution-shell-component-utils.h"

/* A list of all of the calendars started */
static GList *all_calendars = NULL;

/* Focusing information for the calendar view.  We have to keep track of this
 * ourselves because with Bonobo controls, we may get unpaired focus_out events.
 */
typedef struct {
    guint calendar_focused : 1;
    guint taskpad_focused : 1;
} FocusData;

/* Prints the calendar at its current view and time range */
static void
print (GnomeCalendar *gcal, gboolean preview)
{
    time_t start;
    GnomeCalendarViewType view_type;
    PrintView print_view;

    gnome_calendar_get_current_time_range (gcal, &start, NULL);
    view_type = gnome_calendar_get_view (gcal);

    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 (gcal, preview, start, print_view);
}

/* File/Print callback */
static void
file_print_cb (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);
    print (gcal, FALSE);
}

static void
file_print_preview_cb (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);
    print (gcal, TRUE);
}

/* This iterates over each calendar telling them to update their config
   settings. */
void
update_all_config_settings (void)
{
    GList *l;

    for (l = all_calendars; l; l = l->next)
        gnome_calendar_update_config_settings (GNOME_CALENDAR (l->data), FALSE);
}


/* Sets a clock cursor for the specified calendar window */
static void
set_clock_cursor (GnomeCalendar *gcal)
{
    GdkCursor *cursor;

    cursor = gdk_cursor_new (GDK_WATCH);
    gdk_window_set_cursor (GTK_WIDGET (gcal)->window, cursor);
    gdk_cursor_destroy (cursor);
    gdk_flush ();
}

/* Resets the normal cursor for the specified calendar window */
static void
set_normal_cursor (GnomeCalendar *gcal)
{
    gdk_window_set_cursor (GTK_WIDGET (gcal)->window, NULL);
    gdk_flush ();
}

static void
previous_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    set_clock_cursor (gcal);
    gnome_calendar_previous (gcal);
    set_normal_cursor (gcal);
}

static void
next_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    set_clock_cursor (gcal);
    gnome_calendar_next (gcal);
    set_normal_cursor (gcal);
}

void
calendar_goto_today (GnomeCalendar *gcal)
{
    set_clock_cursor (gcal);
    gnome_calendar_goto_today (gcal);
    set_normal_cursor (gcal);
}

static void
today_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    calendar_goto_today (gcal);
}

static void
goto_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    goto_dialog (gcal);
}

static void
show_day_view_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    gnome_calendar_set_view (gcal, GNOME_CAL_DAY_VIEW, FALSE, TRUE);
}

static void
show_work_week_view_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    gnome_calendar_set_view (gcal, GNOME_CAL_WORK_WEEK_VIEW, FALSE, TRUE);
}

static void
show_week_view_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    gnome_calendar_set_view (gcal, GNOME_CAL_WEEK_VIEW, FALSE, TRUE);
}

static void
show_month_view_clicked (BonoboUIComponent *uic, gpointer data, const char *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    gnome_calendar_set_view (gcal, GNOME_CAL_MONTH_VIEW, FALSE, TRUE);
}



static void
cut_cmd (BonoboUIComponent *uic, gpointer data, const gchar *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);
    set_clock_cursor (gcal);
    gnome_calendar_cut_clipboard (gcal);
    set_normal_cursor (gcal);
}

static void
copy_cmd (BonoboUIComponent *uic, gpointer data, const gchar *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    set_clock_cursor (gcal);
    gnome_calendar_copy_clipboard (gcal);
    set_normal_cursor (gcal);
}

static void
paste_cmd (BonoboUIComponent *uic, gpointer data, const gchar *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    set_clock_cursor (gcal);
    gnome_calendar_paste_clipboard (gcal);
    set_normal_cursor (gcal);
}

static void
delete_cmd (BonoboUIComponent *uic, gpointer data, const gchar *path)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (data);

    set_clock_cursor (gcal);
    gnome_calendar_delete_selection (gcal);
    set_normal_cursor (gcal);
}

static void
publish_freebusy_cmd (BonoboUIComponent *uic, gpointer data, const gchar *path)
{
    GnomeCalendar *gcal;
    CalClient *client;
    GList *comp_list;
    icaltimezone *utc;
    time_t start = time (NULL), end;

    gcal = GNOME_CALENDAR (data);

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

    client = gnome_calendar_get_cal_client (gcal);
    comp_list = cal_client_get_free_busy (client, 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, client, NULL);

            gtk_object_unref (GTK_OBJECT (comp));
        }

        g_list_free (comp_list);
    }
}

/* Does a queryInterface on the control's parent control frame for the ShellView interface */
static GNOME_Evolution_ShellView
get_shell_view_interface (BonoboControl *control)
{
    Bonobo_ControlFrame control_frame;
    GNOME_Evolution_ShellView shell_view;
    CORBA_Environment ev;

    control_frame = bonobo_control_get_control_frame (control);

    g_assert (control_frame != CORBA_OBJECT_NIL);

    CORBA_exception_init (&ev);
    shell_view = Bonobo_Unknown_queryInterface (control_frame,
                            "IDL:GNOME/Evolution/ShellView:1.0",
                            &ev);
    if (BONOBO_EX (&ev)) {
        g_message ("get_shell_view_interface(): "
               "Could not queryInterface() on the control frame");
        shell_view = CORBA_OBJECT_NIL;
        goto out;
    }

    CORBA_exception_free (&ev);

 out:

    return shell_view;
}

/* Displays the currently displayed time range in the folder bar label on the
   shell view, according to which view we are showing. */
void
calendar_set_folder_bar_label (GnomeCalendar *gcal, BonoboControl *control)
{
    icaltimezone *zone;
    struct icaltimetype start_tt, end_tt;
    time_t start_time, end_time;
    struct tm start_tm, end_tm;
    char buffer[512], end_buffer[256];
    GnomeCalendarViewType view;

    gnome_calendar_get_visible_time_range (gcal, &start_time, &end_time);
    zone = gnome_calendar_get_timezone (gcal);

    start_tt = icaltime_from_timet_with_zone (start_time, FALSE, zone);
    start_tm.tm_year = start_tt.year - 1900;
    start_tm.tm_mon = start_tt.month - 1;
    start_tm.tm_mday = start_tt.day;
    start_tm.tm_hour = start_tt.hour;
    start_tm.tm_min = start_tt.minute;
    start_tm.tm_sec = start_tt.second;
    start_tm.tm_isdst = -1;
    start_tm.tm_wday = time_day_of_week (start_tt.day, start_tt.month - 1,
                         start_tt.year);

    /* Take one off end_time so we don't get an extra day. */
    end_tt = icaltime_from_timet_with_zone (end_time - 1, FALSE, zone);
    end_tm.tm_year = end_tt.year - 1900;
    end_tm.tm_mon = end_tt.month - 1;
    end_tm.tm_mday = end_tt.day;
    end_tm.tm_hour = end_tt.hour;
    end_tm.tm_min = end_tt.minute;
    end_tm.tm_sec = end_tt.second;
    end_tm.tm_isdst = -1;
    end_tm.tm_wday = time_day_of_week (end_tt.day, end_tt.month - 1,
                       end_tt.year);

    view = gnome_calendar_get_view (gcal);

    switch (view) {
    case GNOME_CAL_DAY_VIEW:
    case GNOME_CAL_WORK_WEEK_VIEW:
    case GNOME_CAL_WEEK_VIEW:
        if (start_tm.tm_year == end_tm.tm_year
            && start_tm.tm_mon == end_tm.tm_mon
            && start_tm.tm_mday == end_tm.tm_mday) {
            strftime (buffer, sizeof (buffer),
                  _("%A %d %B %Y"), &start_tm);
        } else if (start_tm.tm_year == end_tm.tm_year) {
            strftime (buffer, sizeof (buffer),
                  _("%a %d %b"), &start_tm);
            strftime (end_buffer, sizeof (end_buffer),
                  _("%a %d %b %Y"), &end_tm);
            strcat (buffer, " - ");
            strcat (buffer, end_buffer);
        } else {
            strftime (buffer, sizeof (buffer),
                  _("%a %d %b %Y"), &start_tm);
            strftime (end_buffer, sizeof (end_buffer),
                  _("%a %d %b %Y"), &end_tm);
            strcat (buffer, " - ");
            strcat (buffer, end_buffer);
        }
        break;
    case GNOME_CAL_MONTH_VIEW:
        if (start_tm.tm_year == end_tm.tm_year) {
            if (start_tm.tm_mon == end_tm.tm_mon) {
                strftime (buffer, sizeof (buffer),
                      "%d", &start_tm);
                strftime (end_buffer, sizeof (end_buffer),
                      _("%d %B %Y"), &end_tm);
                strcat (buffer, " - ");
                strcat (buffer, end_buffer);
            } else {
                strftime (buffer, sizeof (buffer),
                      _("%d %B"), &start_tm);
                strftime (end_buffer, sizeof (end_buffer),
                      _("%d %B %Y"), &end_tm);
                strcat (buffer, " - ");
                strcat (buffer, end_buffer);
            }
        } else {
            strftime (buffer, sizeof (buffer),
                  _("%d %B %Y"), &start_tm);
            strftime (end_buffer, sizeof (end_buffer),
                  _("%d %B %Y"), &end_tm);
            strcat (buffer, " - ");
            strcat (buffer, end_buffer);
        }
        break;
    default:
        g_assert_not_reached ();
    }

    control_util_set_folder_bar_label (control, buffer);
}

void
control_util_set_folder_bar_label (BonoboControl *control, char *label)
{
    GNOME_Evolution_ShellView shell_view;
    CORBA_Environment ev;

    shell_view = get_shell_view_interface (control);
    if (shell_view == CORBA_OBJECT_NIL)
        return;

    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellView_setFolderBarLabel (shell_view, label, &ev);

    if (BONOBO_EX (&ev))
        g_message ("control_util_set_folder_bar_label(): Could not set the folder bar label");

    CORBA_exception_free (&ev);
}

/* Sensitizes the UI Component menu/toolbar calendar commands based on the
 * number of selected events. (This will always be 0 or 1 currently.)  If enable
 * is FALSE, all will be disabled.  Otherwise, the currently-selected number of
 * events will be used.
 */
static void
sensitize_calendar_commands (GnomeCalendar *gcal, BonoboControl *control, gboolean enable)
{
    BonoboUIComponent *uic;
    int n_selected;
    
    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    n_selected = enable ? gnome_calendar_get_num_events_selected (gcal) : 0;

    bonobo_ui_component_set_prop (uic, "/commands/Cut", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Copy", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Paste", "sensitive",
                      enable ? "1" : "0",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Delete", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
}

/* Sensitizes the UI Component menu/toolbar tasks commands based on the number
 * of selected tasks.  If enable is FALSE, all will be disabled.  Otherwise, the
 * currently-selected number of tasks will be used.
 */
static void
sensitize_taskpad_commands (GnomeCalendar *gcal, BonoboControl *control, gboolean enable)
{
    BonoboUIComponent *uic;
    int n_selected;
    
    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    n_selected = enable ? gnome_calendar_get_num_tasks_selected (gcal) : 0;

    bonobo_ui_component_set_prop (uic, "/commands/Cut", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Copy", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Paste", "sensitive",
                      enable ? "1" : "0",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/Delete", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
}

/* Callback used when the dates shown by the GnomeCalendar are changed.
   We want to update the dates in the folder bar. */
static void
gcal_calendar_dates_change_cb (GnomeCalendar *gcal, gpointer data)
{
    BonoboControl *control;

    control = BONOBO_CONTROL (data);

    calendar_set_folder_bar_label (gcal, control);
}

/* Callback used when the selection in the calendar views changes */
static void
gcal_calendar_selection_changed_cb (GnomeCalendar *gcal, gpointer data)
{
    BonoboControl *control;

    control = BONOBO_CONTROL (data);

    sensitize_calendar_commands (gcal, control, TRUE);
}

/* Callback used when the selection in the taskpad changes */
static void
gcal_taskpad_selection_changed_cb (GnomeCalendar *gcal, gpointer data)
{
    BonoboControl *control;

    control = BONOBO_CONTROL (data);

    sensitize_taskpad_commands (gcal, control, TRUE);
}

/* Callback used when the focus changes for a calendar view */
static void
gcal_calendar_focus_change_cb (GnomeCalendar *gcal, gboolean in, gpointer data)
{
    BonoboControl *control;
    FocusData *focus;

    control = BONOBO_CONTROL (data);

    focus = gtk_object_get_data (GTK_OBJECT (control), "focus_data");
    g_assert (focus != NULL);

    if (in) {
        gtk_signal_connect (GTK_OBJECT (gcal), "calendar_selection_changed",
                    GTK_SIGNAL_FUNC (gcal_calendar_selection_changed_cb), control);
        sensitize_calendar_commands (gcal, control, TRUE);
        focus->calendar_focused = TRUE;
    } else if (focus->calendar_focused) {
        gtk_signal_disconnect_by_func (GTK_OBJECT (gcal),
                           GTK_SIGNAL_FUNC (gcal_calendar_selection_changed_cb),
                           control);
        sensitize_calendar_commands (gcal, control, FALSE);
        focus->calendar_focused = FALSE;
    }
}

/* Callback used when the taskpad focus changes */
static void
gcal_taskpad_focus_change_cb (GnomeCalendar *gcal, gboolean in, gpointer data)
{
    BonoboControl *control;
    FocusData *focus;

    control = BONOBO_CONTROL (data);

    focus = gtk_object_get_data (GTK_OBJECT (control), "focus_data");
    g_assert (focus != NULL);

    if (in) {
        gtk_signal_connect (GTK_OBJECT (gcal), "taskpad_selection_changed",
                    GTK_SIGNAL_FUNC (gcal_taskpad_selection_changed_cb), control);
        sensitize_taskpad_commands (gcal, control, TRUE);
        focus->taskpad_focused = TRUE;
    } else if (focus->taskpad_focused) {
        /* With Bonobo controls, we may get unpaired focus_out events.
         * That is why we have to keep track of this ourselves instead
         * of blindly assumming that we are getting this event because
         * the taskpad was in fact focused.
         */
        gtk_signal_disconnect_by_func (GTK_OBJECT (gcal),
                           GTK_SIGNAL_FUNC (gcal_taskpad_selection_changed_cb),
                           control);
        sensitize_taskpad_commands (gcal, control, FALSE);
        focus->taskpad_focused = FALSE;
    }

}


static BonoboUIVerb verbs [] = {
    BONOBO_UI_VERB ("CalendarPrint", file_print_cb),
    BONOBO_UI_VERB ("CalendarPrintPreview", file_print_preview_cb),

    BONOBO_UI_VERB ("Cut", cut_cmd),
    BONOBO_UI_VERB ("Copy", copy_cmd),
    BONOBO_UI_VERB ("Paste", paste_cmd),
    BONOBO_UI_VERB ("Delete", delete_cmd),

    BONOBO_UI_VERB ("CalendarPrev", previous_clicked),
    BONOBO_UI_VERB ("CalendarToday", today_clicked),
    BONOBO_UI_VERB ("CalendarNext", next_clicked),
    BONOBO_UI_VERB ("CalendarGoto", goto_clicked),

    BONOBO_UI_VERB ("ShowDayView", show_day_view_clicked),
    BONOBO_UI_VERB ("ShowWorkWeekView", show_work_week_view_clicked),
    BONOBO_UI_VERB ("ShowWeekView", show_week_view_clicked),
    BONOBO_UI_VERB ("ShowMonthView", show_month_view_clicked),

    BONOBO_UI_VERB ("PublishFreeBusy", publish_freebusy_cmd),

    BONOBO_UI_VERB_END
};

static EPixmap pixmaps [] =
{
    E_PIXMAP ("/menu/File/New/NewFirstItem/NewAppointment",               "new_appointment.xpm"),
    E_PIXMAP ("/menu/File/New/NewFirstItem/NewMeeting",               "meeting.xpm"),
    E_PIXMAP ("/menu/File/New/NewFirstItem/NewTask",                  "new_task-16.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/Cut",               "16_cut.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/Copy",                  "16_copy.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/Paste",                 "16_paste.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/Delete",                "evolution-trash-mini.png"),
    E_PIXMAP ("/menu/File/Print/Print",                   "print.xpm"),
    E_PIXMAP ("/menu/File/Print/PrintPreview",                "print-preview.xpm"),
    E_PIXMAP ("/menu/View/ViewBegin/Goto",                    "goto-16.png"),

    E_PIXMAP ("/Toolbar/New",                         "buttons/new_appointment.png"),
    E_PIXMAP ("/Toolbar/NewTask",                         "buttons/new_task.png"),
    E_PIXMAP ("/Toolbar/Print",                       "buttons/print.png"),
    E_PIXMAP ("/Toolbar/Delete",                          "buttons/delete-message.png"),
    E_PIXMAP ("/Toolbar/Prev",                        "buttons/arrow-left-24.png"),
    E_PIXMAP ("/Toolbar/Next",                        "buttons/arrow-right-24.png"),
    E_PIXMAP ("/Toolbar/Goto",                        "buttons/goto-24.png"),
    E_PIXMAP ("/Toolbar/DayView",                         "buttons/dayview.xpm"),
    E_PIXMAP ("/Toolbar/WorkWeekView",                    "buttons/workweekview.xpm"),
    E_PIXMAP ("/Toolbar/WeekView",                        "buttons/weekview.xpm"),
    E_PIXMAP ("/Toolbar/MonthView",                       "buttons/monthview.xpm"),

    E_PIXMAP_END
};

void
calendar_control_activate (BonoboControl *control,
               GnomeCalendar *gcal)
{
    Bonobo_UIContainer remote_uih;
    BonoboUIComponent *uic;
    FocusData *focus;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    remote_uih = bonobo_control_get_remote_ui_container (control);
    bonobo_ui_component_set_container (uic, remote_uih);
    bonobo_object_release_unref (remote_uih, NULL);

    gnome_calendar_set_ui_component (gcal, uic);

    bonobo_ui_component_add_verb_list_with_data (uic, verbs, gcal);

    bonobo_ui_component_freeze (uic, NULL);

    bonobo_ui_util_set_ui (uic, EVOLUTION_DATADIR,
                   "evolution-calendar.xml",
                   "evolution-calendar");

    e_pixmaps_update (uic, pixmaps);

    gnome_calendar_setup_view_menus (gcal, uic);

    gtk_signal_connect (GTK_OBJECT (gcal), "dates_shown_changed",
                GTK_SIGNAL_FUNC (gcal_calendar_dates_change_cb),
                control);
    gtk_signal_connect (GTK_OBJECT (gcal), "calendar_focus_change",
                GTK_SIGNAL_FUNC (gcal_calendar_focus_change_cb), control);
    gtk_signal_connect (GTK_OBJECT (gcal), "taskpad_focus_change",
                GTK_SIGNAL_FUNC (gcal_taskpad_focus_change_cb), control);

    sensitize_calendar_commands (gcal, control, FALSE);
    sensitize_taskpad_commands (gcal, control, FALSE);

    bonobo_ui_component_thaw (uic, NULL);

    /* Show the dialog for setting the timezone if the user hasn't chosen
       a default timezone already. This is done in the startup wizard now,
       so we don't do it here. */
#if 0
    calendar_config_check_timezone_set ();
#endif

    calendar_set_folder_bar_label (gcal, control);

    focus = g_new (FocusData, 1);
    focus->calendar_focused = FALSE;
    focus->taskpad_focused = FALSE;

    gtk_object_set_data (GTK_OBJECT (control), "focus_data", focus);
}

void
calendar_control_deactivate (BonoboControl *control, GnomeCalendar *gcal)
{
    FocusData *focus;
    BonoboUIComponent *uic;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    gnome_calendar_set_ui_component (gcal, uic);

    focus = gtk_object_get_data (GTK_OBJECT (control), "focus_data");
    g_assert (focus != NULL);

    gtk_object_remove_data (GTK_OBJECT (control), "focus_data");
    g_free (focus);

    gnome_calendar_discard_view_menus (gcal);

    gtk_signal_disconnect_by_data (GTK_OBJECT (gcal), control);

    bonobo_ui_component_rm (uic, "/", NULL);
    bonobo_ui_component_unset_container (uic);
}

/* Removes a calendar from our list of all calendars when it is destroyed. */
static void
on_calendar_destroyed (GnomeCalendar *gcal)
{
    all_calendars = g_list_remove (all_calendars, gcal);
}

GnomeCalendar *
new_calendar (void)
{
    GtkWidget *gcal;

    gcal = gnome_calendar_new ();
    if (!gcal) {
        gnome_warning_dialog (_("Could not create the calendar view.  Please check your "
                    "ORBit and OAF setup."));
        return NULL;
    }

    gtk_signal_connect (GTK_OBJECT (gcal), "destroy",
                GTK_SIGNAL_FUNC (on_calendar_destroyed), NULL);

    all_calendars = g_list_prepend (all_calendars, gcal);

    return GNOME_CALENDAR (gcal);
}