Free the icalcomponent if this is an unattached alarm.

2000-07-18  Federico Mena Quintero  <federico@helixcode.com>

	* cal-util/cal-component.c (cal_component_alarm_free): Free the
	icalcomponent if this is an unattached alarm.
	(scan_alarm_property): Handle the TRIGGER property.
	(cal_component_alarm_get_trigger): Ditto.  Royal pain.
	(cal_component_alarm_set_trigger): Ditto.  Less pain.

svn path=/trunk/; revision=4216

2 files changed, 173 insertions, 1 deletions

diff --git a/calendar/cal-util/cal-component.c b/calendar/cal-util/cal-component.c
index 2ff980a0f6..0d5b829520 100644
--- a/calendar/cal-util/cal-component.c
+++ b/calendar/cal-util/cal-component.c
@@ -95,6 +95,7 @@ struct _CalComponentAlarm {
 	/* Properties */
 
 	icalproperty *action;
+	icalproperty *trigger;
 };
 
 
@@ -2059,6 +2060,10 @@ scan_alarm_property (CalComponentAlarm *alarm, icalproperty *prop)
 		alarm->action = prop;
 		break;
 
+	case ICAL_TRIGGER_PROPERTY:
+		alarm->trigger = prop;
+		break;
+
 	default:
 		break;
 	}
@@ -2125,8 +2130,14 @@ cal_component_alarm_free (CalComponentAlarm *alarm)
 {
 	g_return_if_fail (alarm != NULL);
 
-	alarm->parent = NULL;
+	g_assert (alarm->icalcomp != NULL);
+
+	if (icalcomponent_get_parent (alarm->icalcomp) != NULL)
+		icalcomponent_free (alarm->icalcomp);
+
 	alarm->icalcomp = NULL;
+
+	alarm->parent = NULL;
 	alarm->action = NULL;
 
 	g_free (alarm);
@@ -2147,6 +2158,8 @@ cal_component_alarm_get_action (CalComponentAlarm *alarm, CalComponentAlarmActio
 	g_return_if_fail (alarm != NULL);
 	g_return_if_fail (action != NULL);
 
+	g_assert (alarm->icalcomp != NULL);
+
 	if (!alarm->action) {
 		*action = CAL_COMPONENT_ALARM_NONE;
 		return;
@@ -2182,6 +2195,8 @@ cal_component_alarm_set_action (CalComponentAlarm *alarm, CalComponentAlarmActio
 	g_return_if_fail (action != CAL_COMPONENT_ALARM_NONE);
 	g_return_if_fail (action != CAL_COMPONENT_ALARM_UNKNOWN);
 
+	g_assert (alarm->icalcomp != NULL);
+
 	switch (action) {
 	case CAL_COMPONENT_ALARM_AUDIO:
 		str = "AUDIO";
@@ -2211,3 +2226,133 @@ cal_component_alarm_set_action (CalComponentAlarm *alarm, CalComponentAlarmActio
 		icalcomponent_add_property (alarm->icalcomp, alarm->action);
 	}
 }
+
+/**
+ * cal_component_alarm_get_trigger:
+ * @alarm: An alarm.
+ * @trigger: Return value for the trigger time.
+ * 
+ * Queries the trigger time for an alarm.
+ **/
+void
+cal_component_alarm_get_trigger (CalComponentAlarm *alarm, CalComponentAlarmTrigger **trigger)
+{
+	icalparameter *param;
+	union icaltriggertype t;
+
+	g_return_if_fail (alarm != NULL);
+	g_return_if_fail (trigger != NULL);
+
+	g_assert (alarm->icalcomp != NULL);
+
+	if (!alarm->trigger) {
+		*trigger = NULL;
+		return;
+	}
+
+	*trigger = g_new (CalComponentAlarmTrigger, 1);
+
+	/* Get trigger type */
+
+	param = icalproperty_get_first_parameter (alarm->trigger, ICAL_VALUE_PARAMETER);
+
+	if (param) {
+		icalparameter_value value;
+
+		value = icalparameter_get_value (param);
+
+		switch (value) {
+		case ICAL_VALUE_DURATION:
+			(*trigger)->type = CAL_COMPONENT_ALARM_TRIGGER_RELATIVE;
+			break;
+
+		case ICAL_VALUE_DATETIME:
+			(*trigger)->type = CAL_COMPONENT_ALARM_TRIGGER_ABSOLUTE;
+			break;
+
+		default:
+			g_message ("cal_component_alarm_get_trigger(): Unknown value for trigger "
+				   "value %d; using RELATIVE", value);
+
+			(*trigger)->type = CAL_COMPONENT_ALARM_TRIGGER_RELATIVE;
+			break;
+		}
+	} else
+		(*trigger)->type = CAL_COMPONENT_ALARM_TRIGGER_RELATIVE;
+
+	/* Get trigger value and the RELATED parameter */
+
+	t = icalproperty_get_trigger (alarm->trigger);
+
+	switch ((*trigger)->type) {
+	case CAL_COMPONENT_ALARM_TRIGGER_RELATIVE:
+		(*trigger)->u.relative.duration = t.duration;
+
+		param = icalproperty_get_first_parameter (alarm->trigger, ICAL_RELATED_PARAMETER);
+		if (param) {
+			icalparameter_related rel;
+
+			rel = icalparameter_get_related (param);
+
+			switch (rel) {
+			case ICAL_RELATED_START:
+				(*trigger)->u.relative.related =
+					CAL_COMPONENT_ALARM_TRIGGER_RELATED_START;
+				break;
+
+			case ICAL_RELATED_END:
+				(*trigger)->u.relative.related =
+					CAL_COMPONENT_ALARM_TRIGGER_RELATED_END;
+				break;
+
+			default:
+				g_assert_not_reached ();
+			}
+		} else
+			(*trigger)->u.relative.related = CAL_COMPONENT_ALARM_TRIGGER_RELATED_START;
+
+		break;
+
+	case CAL_COMPONENT_ALARM_TRIGGER_ABSOLUTE:
+		(*trigger)->u.absolute = t.time;
+		break;
+
+	default:
+		g_assert_not_reached ();
+	}
+}
+
+void
+cal_component_alarm_set_trigger (CalComponentAlarm *alarm, CalComponentAlarmTrigger *trigger)
+{
+	union icaltriggertype t;
+
+	g_return_if_fail (alarm != NULL);
+	g_return_if_fail (trigger != NULL);
+
+	g_assert (alarm->icalcomp != NULL);
+
+	/* Set the value */
+
+	switch (trigger->type) {
+	case CAL_COMPONENT_ALARM_TRIGGER_RELATIVE:
+		t.duration = trigger->u.relative.duration;
+		break;
+
+	case CAL_COMPONENT_ALARM_TRIGGER_ABSOLUTE:
+		t.time = trigger->u.absolute;
+		break;
+
+	default:
+		g_assert_not_reached ();
+	}
+
+	if (alarm->trigger)
+		icalproperty_set_trigger (alarm->trigger, t);
+	else {
+		alarm->trigger = icalproperty_new_trigger (t);
+		icalcomponent_add_property (alarm->icalcomp, alarm->trigger);
+	}
+
+	/* Set the parameters */
+}
diff --git a/calendar/cal-util/cal-component.h b/calendar/cal-util/cal-component.h
index d226940586..664599f9f6 100644
--- a/calendar/cal-util/cal-component.h
+++ b/calendar/cal-util/cal-component.h
@@ -182,6 +182,29 @@ typedef enum {
 	CAL_COMPONENT_ALARM_UNKNOWN
 } CalComponentAlarmAction;
 
+typedef enum {
+	CAL_COMPONENT_ALARM_TRIGGER_RELATIVE,
+	CAL_COMPONENT_ALARM_TRIGGER_ABSOLUTE
+} CalComponentAlarmTriggerType;
+
+typedef enum {
+	CAL_COMPONENT_ALARM_TRIGGER_RELATED_START,
+	CAL_COMPONENT_ALARM_TRIGGER_RELATED_END
+} CalComponentAlarmTriggerRelated;
+
+typedef struct {
+	CalComponentAlarmTriggerType type;
+
+	union {
+		struct {
+			struct icaldurationtype duration;
+			CalComponentAlarmTriggerRelated related;
+		} relative;
+
+		struct icaltimetype absolute;
+	} u;
+} CalComponentAlarmTrigger;
+
 CalComponentAlarm *cal_component_get_first_alarm (CalComponent *comp);
 CalComponentAlarm *cal_component_get_next_alarm (CalComponent *comp);
 
@@ -190,6 +213,10 @@ void cal_component_alarm_free (CalComponentAlarm *alarm);
 void cal_component_alarm_get_action (CalComponentAlarm *alarm, CalComponentAlarmAction *action);
 void cal_component_alarm_set_action (CalComponentAlarm *alarm, CalComponentAlarmAction action);
 
+void cal_component_alarm_get_trigger (CalComponentAlarm *alarm, CalComponentAlarmTrigger **trigger);
+void cal_component_alarm_set_trigger (CalComponentAlarm *alarm, CalComponentAlarmTrigger *trigger);
+void cal_component_alarm_free_trigger (CalComponentAlarmTrigger *trigger);
+
 
 
 END_GNOME_DECLS