/// <summary>
/// Process single alarm message.
/// </summary>
/// <param name="alarmInfoViewModel"></param>
/// <returns></returns>
private bool OnAlarmNotification(AlarmInfoViewModelBase alarmInfoViewModel)
{
bool listsChanged = false;
// Add alarm to general alarm list
var newAlarm = new AlarmInfoViewModel(alarmInfoViewModel);
if (ProcessAlarm(_alarms, newAlarm))
{
listsChanged = true;
}
if (newAlarm.Priority > 2)
{
// Add alarm to high priority alarm list
// We have to create separate variable for each particular alarm lists
var highPriorityAlarm = new AlarmInfoViewModel(alarmInfoViewModel);
if (ProcessAlarm(_highPriorityAlarms, highPriorityAlarm))
{
listsChanged = true;
}
}
return(listsChanged);
}
public void OnAlarmNotification(IEnumerable <AlarmInfoViewModelBase> alarmInfoViewModels)
{
bool listsChanged = false;
foreach (AlarmInfoViewModelBase alarmInfoViewModel in alarmInfoViewModels)
{
if (OnAlarmNotification(alarmInfoViewModel))
{
listsChanged = true;
}
}
if (listsChanged)
{
int unackedAlarmsCount = 0;
int activeOrUnackedAlarmsCount = 0;
for (int i = 0; i < _alarms.Count; i++)
{
AlarmInfoViewModel alarm = _alarms[i];
alarm.Num = i + 1;
if (alarm.AlarmIsUnacked)
{
unackedAlarmsCount++;
}
if ((alarm.AlarmIsActive || alarm.AlarmIsUnacked) &&
alarm.CurrentAlarmCondition != AlarmCondition.None)
{
activeOrUnackedAlarmsCount++;
}
}
UnackedAlarmsCount = unackedAlarmsCount;
ActiveOrUnackedAlarmsCount = activeOrUnackedAlarmsCount;
HasUnackedAlarms = unackedAlarmsCount > 0;
HasActiveOrUnackedAlarms = activeOrUnackedAlarmsCount > 0;
for (int i = 0; i < _highPriorityAlarms.Count; i++)
{
_highPriorityAlarms[i].Num = i + 1;
}
AlarmInfoViewModel[] last5UnackedAlarms = _alarms.Where(a => a.AlarmIsUnacked && a.CategoryId > 0).Take(5).ToArray();
if (!last5UnackedAlarms.SequenceEqual(_last5UnackedAlarms))
{
_last5UnackedAlarms.Clear();
foreach (AlarmInfoViewModel row in last5UnackedAlarms)
{
_last5UnackedAlarms.Add(row);
}
}
}
}
/// <summary>
/// Process alarm list manipulation when new alarm message is arrived. Removed old alarmd (returned to normal) and so
/// on
/// </summary>
/// <param name="alarmsList">alarm list</param>
/// <param name="newAlarm">new incomming alarm</param>
/// <returns>true if alarms list had been changed</returns>
private static bool ProcessAlarm(IList <AlarmInfoViewModel> alarmsList, AlarmInfoViewModel newAlarm)
{
IEnumerable <AlarmInfoViewModel> alarmsSameEventSourceObject = alarmsList.Where(a =>
String.Equals(a.Tag, newAlarm.Tag, StringComparison.InvariantCultureIgnoreCase)
).ToArray();
var alarmsToRemove = new List <AlarmInfoViewModel>();
if (newAlarm.CurrentAlarmCondition == AlarmCondition.None)
{
if (newAlarm.AlarmIsUnacked)
{
foreach (AlarmInfoViewModel a in alarmsSameEventSourceObject)
{
a.AlarmIsActive = false;
}
}
else
{
alarmsToRemove.AddRange(alarmsSameEventSourceObject);
}
}
else
{
alarmsToRemove.AddRange(alarmsSameEventSourceObject);
var eventSourceObject = App.EventSourceModel.GetOrCreateEventSourceObject(newAlarm.Tag, newAlarm.Area);
var activeConditions = eventSourceObject.AlarmConditions.Where(kvp => kvp.Value.Active).ToArray();
if (activeConditions.Length > 0)
{
var kvp = activeConditions.OrderByDescending(i => i.Value.CategoryId).ThenByDescending(i => i.Value.ActiveOccurrenceTime).First();
newAlarm.CategoryId = kvp.Value.CategoryId;
newAlarm.CurrentAlarmCondition = kvp.Key;
newAlarm.AlarmIsActive = kvp.Value.Active;
newAlarm.AlarmIsUnacked = kvp.Value.Unacked;
alarmsList.Insert(0, newAlarm);
}
else
{
var unackedConditions = eventSourceObject.AlarmConditions.Where(kvp => kvp.Value.Unacked).ToArray();
if (unackedConditions.Length > 0)
{
var kvp = unackedConditions.OrderByDescending(i => i.Value.CategoryId).ThenByDescending(i => i.Value.ActiveOccurrenceTime).First();
newAlarm.CategoryId = kvp.Value.CategoryId;
newAlarm.CurrentAlarmCondition = kvp.Key;
newAlarm.AlarmIsActive = kvp.Value.Active;
newAlarm.AlarmIsUnacked = kvp.Value.Unacked;
alarmsList.Insert(0, newAlarm);
}
}
}
foreach (AlarmInfoViewModel a in alarmsToRemove)
{
alarmsList.Remove(a);
}
return(true);
}
