/// <summary>
/// Proxy for the CollectionChanged event that hides issues with re-entrancy and no listeners.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">Event arguments.</param>
private void _NotifyCollectionChanged(object sender, ContactCollectionChangedEventArgs e)
{
Assert.IsTrue(CheckAccess());
// Only process these if we haven't already started disposing this...
if (!_disposed)
{
// By assigning to a temporary we avoid race conditions with the event losing listeners
// after the null check, and ensure that we don't end up in any kind of weird cycle due
// to re-entrancy.
EventHandler<ContactCollectionChangedEventArgs> handler = _CollectionChangedInternal;
if (null != handler)
{
handler(sender, e);
}
}
}
private void _ListenForMeContactChanges(object sender, ContactCollectionChangedEventArgs e)
{
// If there is no MeContact in the registry then we don't care about
// changes to any contact - none of them is going to be Me.
if (null != _meContactId)
{
bool changed = false;
Contact contact;
string realMeId = GetMeContactId();
if (_manager.TryGetContact(realMeId, out contact))
{
if (e.NewId == contact.Id)
{
changed = true;
}
}
else
{
changed = true;
}
if (changed)
{
PropertyChangedEventHandler handler = _PropertyChangedInternal;
if (null != handler)
{
handler(this, new PropertyChangedEventArgs("MeContact"));
}
}
}
}
