private void CoerceSelectedItem(ISpritePartGroupPart groupPart, [CallerMemberName] string callerName = null)
{
if (supressEvents)
{
return;
}
string propName = "null";
if (GetBindingExpression(ItemsSourceProperty) != null)
{
propName = GetBindingExpression(ItemsSourceProperty).ResolvedSourcePropertyName;
}
Console.WriteLine($"{propName} SpritePartGroupComboBox.{callerName} coerce");
supressEvents = true;
ISpritePartGroup source = ItemsSource;
if (source == null)
{
groupPart = null;
}
else if (groupPart != null && source.TryGetValue(groupPart.Id, out ISpritePartGroupPart newGroupPart))
{
groupPart = newGroupPart;
}
else if (source.IsEnabledByDefault && source.GroupParts.Count > 1)
{
groupPart = source.GroupParts[1];
}
else
{
groupPart = source.GroupParts[0];
}
SelectedItem = groupPart;
SelectedItemInternal = groupPart;
supressEvents = false;
}
