private void Current_StateChanged(object sender, LocalNotificationStateChangedEventArgs e)
{
switch (e.NewState)
{
// When a notification first gets hidden, it will expire (i.e. get removed from the visual tree).
case LocalNotificationState.Hidden:
{
current.StateChanged -= Current_StateChanged;
DisengageTimer();
grid.Children.Remove(current);
current = null;
if (q.Count > 0)
{
Show(q.Dequeue());
}
}
break;
// When a notification gets shown when the timer is null (implying that it is shown for the first time), a new timer will be assigned to schedule hiding it.
// The null check is so that when the notification switches to the 'Shown' state multiple times (e.g. after restoration), a new timer doesn't get assigned to it.
case LocalNotificationState.Shown:
{
if (timer == null)
{
timer = new DispatcherTimer
{
Interval = current.TimeSpan ?? TimeSpan.Zero,
};
if (current.TimeSpan != null)
{
timer.Tick += Timer_Tick;
timer.Start();
}
}
}
break;
}
}
/// <summary>
/// Called when the notification switches to a <see cref="LocalNotificationState"/>.
/// </summary>
/// <param name="eventArgs">The <see cref="LocalNotificationStateChangedEventArgs"/> instance containing the event data.</param>
protected virtual void OnStateChanged(LocalNotificationStateChangedEventArgs eventArgs)
{
}
