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-rw-r--r--calendar/gui/comp-util.c382
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diff --git a/calendar/gui/comp-util.c b/calendar/gui/comp-util.c
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--- a/calendar/gui/comp-util.c
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-/* 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 "e-cal-view.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))
- return NULL;
-
- comp = e_cal_component_new ();
- if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
- g_object_unref (comp);
- icalcomponent_free (icalcomp);
- return NULL;
- }
-
- 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);
- }
-
- e_cal_component_commit_sequence (comp);
-
- return comp;
-}
-
-ECalComponent *
-cal_comp_task_new_with_defaults (ECal *client)
-{
- ECalComponent *comp;
- icalcomponent *icalcomp;
-
- if (!e_cal_get_default_object (client, &icalcomp, NULL))
- return NULL;
-
- comp = e_cal_component_new ();
- if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
- g_object_unref (comp);
- icalcomponent_free (icalcomp);
-
- return NULL;
- }
-
- comp = e_cal_component_new ();
- if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
- g_object_unref (comp);
- icalcomponent_free (icalcomp);
- return NULL;
- }
-
- return comp;
-}