/* Evolution calendar - Utilities for manipulating ECalComponent objects
*
* Copyright (C) 2000 Ximian, Inc.
* Copyright (C) 2000 Ximian, Inc.
*
* Author: Federico Mena-Quintero <federico@ximian.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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <time.h>
#include "calendar-config.h"
#include "comp-util.h"
#include "dialogs/delete-comp.h"
/**
* cal_comp_util_add_exdate:
* @comp: A calendar component object.
* @itt: Time for the exception.
*
* Adds an exception date to the current list of EXDATE properties in a calendar
* component object.
**/
void
cal_comp_util_add_exdate (ECalComponent *comp, time_t t, icaltimezone *zone)
{
GSList *list;
ECalComponentDateTime *cdt;
g_return_if_fail (comp != NULL);
g_return_if_fail (E_IS_CAL_COMPONENT (comp));
e_cal_component_get_exdate_list (comp, &list);
cdt = g_new (ECalComponentDateTime, 1);
cdt->value = g_new (struct icaltimetype, 1);
*cdt->value = icaltime_from_timet_with_zone (t, FALSE, zone);
cdt->tzid = g_strdup (icaltimezone_get_tzid (zone));
list = g_slist_append (list, cdt);
e_cal_component_set_exdate_list (comp, list);
e_cal_component_free_exdate_list (list);
}
/* Returns TRUE if the TZIDs are equivalent, i.e. both NULL or the same. */
static gboolean
e_cal_component_compare_tzid (const char *tzid1, const char *tzid2)
{
gboolean retval = TRUE;
if (tzid1) {
if (!tzid2 || strcmp (tzid1, tzid2))
retval = FALSE;
} else {
if (tzid2)
retval = FALSE;
}
return retval;
}
/**
* cal_comp_util_compare_event_timezones:
* @comp: A calendar component object.
* @client: A #ECal.
*
* Checks if the component uses the given timezone for both the start and
* the end time, or if the UTC offsets of the start and end times are the same
* as in the given zone.
*
* Returns: TRUE if the component's start and end time are at the same UTC
* offset in the given timezone.
**/
gboolean
cal_comp_util_compare_event_timezones (ECalComponent *comp,
ECal *client,
icaltimezone *zone)
{
ECalComponentDateTime start_datetime, end_datetime;
const char *tzid;
gboolean retval = FALSE;
icaltimezone *start_zone, *end_zone;
int offset1, offset2;
tzid = icaltimezone_get_tzid (zone);
e_cal_component_get_dtstart (comp, &start_datetime);
e_cal_component_get_dtend (comp, &end_datetime);
/* If either the DTSTART or the DTEND is a DATE value, we return TRUE.
Maybe if one was a DATE-TIME we should check that, but that should
not happen often. */
if ((start_datetime.value && start_datetime.value->is_date)
|| (end_datetime.value && end_datetime.value->is_date)) {
retval = TRUE;
goto out;
}
/* If the event uses UTC for DTSTART & DTEND, return TRUE. Outlook
will send single events as UTC, so we don't want to mark all of
these. */
if ((!start_datetime.value || start_datetime.value->is_utc)
&& (!end_datetime.value || end_datetime.value->is_utc)) {
retval = TRUE;
goto out;
}
/* If the event uses floating time for DTSTART & DTEND, return TRUE.
Imported vCalendar files will use floating times, so we don't want
to mark all of these. */
if (!start_datetime.tzid && !end_datetime.tzid) {
retval = TRUE;
goto out;
}
/* FIXME: DURATION may be used instead. */
if (e_cal_component_compare_tzid (tzid, start_datetime.tzid)
&& e_cal_component_compare_tzid (tzid, end_datetime.tzid)) {
/* If both TZIDs are the same as the given zone's TZID, then
we know the timezones are the same so we return TRUE. */
retval = TRUE;
} else {
/* If the TZIDs differ, we have to compare the UTC offsets
of the start and end times, using their own timezones and
the given timezone. */
if (!e_cal_get_timezone (client, start_datetime.tzid,
&start_zone, NULL))
goto out;
if (start_datetime.value) {
offset1 = icaltimezone_get_utc_offset (start_zone,
start_datetime.value,
NULL);
offset2 = icaltimezone_get_utc_offset (zone,
start_datetime.value,
NULL);
if (offset1 != offset2)
goto out;
}
if (!e_cal_get_timezone (client, end_datetime.tzid,
&end_zone, NULL))
goto out;
if (end_datetime.value) {
offset1 = icaltimezone_get_utc_offset (end_zone,
end_datetime.value,
NULL);
offset2 = icaltimezone_get_utc_offset (zone,
end_datetime.value,
NULL);
if (offset1 != offset2)
goto out;
}
retval = TRUE;
}
out:
e_cal_component_free_datetime (&start_datetime);
e_cal_component_free_datetime (&end_datetime);
return retval;
}
/**
* cal_comp_confirm_delete_empty_comp:
* @comp: A calendar component.
* @client: Calendar client where the component purportedly lives.
* @widget: Widget to be used as the basis for UTF8 conversion.
*
* Assumming a calendar component with an empty SUMMARY property (as per
* string_is_empty()), asks whether the user wants to delete it based on
* whether the appointment is on the calendar server or not. If the
* component is on the server, this function will present a confirmation
* dialog and delete the component if the user tells it to. If the component
* is not on the server it will just return TRUE.
*
* Return value: A result code indicating whether the component
* was not on the server and is to be deleted locally, whether it
* was on the server and the user deleted it, or whether the
* user cancelled the deletion.
**/
gboolean
cal_comp_is_on_server (ECalComponent *comp, ECal *client)
{
const char *uid;
icalcomponent *icalcomp;
GError *error = NULL;
g_return_val_if_fail (comp != NULL, FALSE);
g_return_val_if_fail (E_IS_CAL_COMPONENT (comp), FALSE);
g_return_val_if_fail (client != NULL, FALSE);
g_return_val_if_fail (E_IS_CAL (client), FALSE);
/* See if the component is on the server. If it is not, then it likely
* means that the appointment is new, only in the day view, and we
* haven't added it yet to the server. In that case, we don't need to
* confirm and we can just delete the event. Otherwise, we ask
* the user.
*/
e_cal_component_get_uid (comp, &uid);
if (e_cal_get_object (client, uid, NULL, &icalcomp, &error)) {
icalcomponent_free (icalcomp);
return TRUE;
}
if (error->code != E_CALENDAR_STATUS_OBJECT_NOT_FOUND)
g_warning (G_STRLOC ": %s", error->message);
g_clear_error (&error);
return FALSE;
}
/**
* cal_comp_event_new_with_defaults:
*
* Creates a new VEVENT component and adds any default alarms to it as set in
* the program's configuration values.
*
* Return value: A newly-created calendar component.
**/
ECalComponent *
cal_comp_event_new_with_defaults (ECal *client)
{
icalcomponent *icalcomp;
ECalComponent *comp;
int interval;
CalUnits units;
ECalComponentAlarm *alarm;
icalproperty *icalprop;
ECalComponentAlarmTrigger trigger;
if (!e_cal_get_default_object (client, &icalcomp, NULL))
icalcomp = icalcomponent_new (ICAL_VEVENT_COMPONENT);
comp = e_cal_component_new ();
if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
icalcomponent_free (icalcomp);
e_cal_component_set_new_vtype (comp, E_CAL_COMPONENT_EVENT);
}
if (!calendar_config_get_use_default_reminder ())
return comp;
interval = calendar_config_get_default_reminder_interval ();
units = calendar_config_get_default_reminder_units ();
alarm = e_cal_component_alarm_new ();
/* We don't set the description of the alarm; we'll copy it from the
* summary when it gets committed to the server. For that, we add a
* X-EVOLUTION-NEEDS-DESCRIPTION property to the alarm's component.
*/
icalcomp = e_cal_component_alarm_get_icalcomponent (alarm);
icalprop = icalproperty_new_x ("1");
icalproperty_set_x_name (icalprop, "X-EVOLUTION-NEEDS-DESCRIPTION");
icalcomponent_add_property (icalcomp, icalprop);
e_cal_component_alarm_set_action (alarm, E_CAL_COMPONENT_ALARM_DISPLAY);
trigger.type = E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START;
memset (&trigger.u.rel_duration, 0, sizeof (trigger.u.rel_duration));
trigger.u.rel_duration.is_neg = TRUE;
switch (units) {
case CAL_MINUTES:
trigger.u.rel_duration.minutes = interval;
break;
case CAL_HOURS:
trigger.u.rel_duration.hours = interval;
break;
case CAL_DAYS:
trigger.u.rel_duration.days = interval;
break;
default:
g_assert_not_reached ();
}
e_cal_component_alarm_set_trigger (alarm, trigger);
e_cal_component_add_alarm (comp, alarm);
e_cal_component_alarm_free (alarm);
return comp;
}
ECalComponent *
cal_comp_event_new_with_current_time (ECal *client, gboolean all_day)
{
ECalComponent *comp;
struct icaltimetype itt;
ECalComponentDateTime dt;
icaltimezone *zone;
comp = cal_comp_event_new_with_defaults (client);
g_return_val_if_fail (comp, NULL);
zone = calendar_config_get_icaltimezone ();
if (all_day) {
itt = icaltime_from_timet_with_zone (time (NULL), 1, zone);
dt.value = &itt;
dt.tzid = icaltimezone_get_tzid (zone);
e_cal_component_set_dtstart (comp, &dt);
e_cal_component_set_dtend (comp, &dt);
} else {
itt = icaltime_current_time_with_zone (zone);
icaltime_adjust (&itt, 0, 1, -itt.minute, -itt.second);
dt.value = &itt;
dt.tzid = icaltimezone_get_tzid (zone);
e_cal_component_set_dtstart (comp, &dt);
icaltime_adjust (&itt, 0, 1, 0, 0);
e_cal_component_set_dtend (comp, &dt);
}
return comp;
}
ECalComponent *
cal_comp_task_new_with_defaults (ECal *client)
{
ECalComponent *comp;
icalcomponent *icalcomp;
if (!e_cal_get_default_object (client, &icalcomp, NULL))
icalcomp = icalcomponent_new (ICAL_VTODO_COMPONENT);
comp = e_cal_component_new ();
if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
icalcomponent_free (icalcomp);
e_cal_component_set_new_vtype (comp, E_CAL_COMPONENT_TODO);
}
return comp;
}
