public bool TryGetSourceFieldBinding(string property, out PropertyFieldBinding binding)
{
List <PropertyFieldBinding> bindings;
if (!this.propertyToFieldMapping.TryGetValue(property, out bindings))
{
binding = null;
return(false);
}
binding = bindings.SingleOrDefault(b => b.IsActive);
return(binding != null);
}
/// <summary>
/// Finds a field that holds object returned by the property. Activates binding to that field and deactivates other bindings.
/// </summary>
/// <param name="args"></param>
/// <returns>true if there is active binding, false if not.</returns>
public bool RefreshPropertyBindings(LocationInterceptionArgs args)
{
bool bindingFound = false;
PropertyFieldBinding bindingToActivate = null;
List <PropertyFieldBinding> sourceFields;
if (this.TryGetSourceFieldBindings(args.LocationName, out sourceFields))
{
foreach (PropertyFieldBinding propertyFieldBinding in sourceFields.OrderBy(f => f.IsActive))
{
object value = propertyFieldBinding.Field.GetValue(args.Instance);
if (this.fieldValueComparer.AreEqual(args.LocationFullName, value, args.Value))
{
// field and property values are equal, mark source field binding as active and if there is a handler hooked to the property un hook it
bindingFound = true;
if (propertyFieldBinding.IsActive)
{
break;
}
bindingToActivate = propertyFieldBinding;
}
else
{
// field and property values differ, mark source field binding as inactive and re hook a handler to the property
propertyFieldBinding.IsActive = false;
}
}
}
if (bindingFound && bindingToActivate != null)
{
bindingToActivate.IsActive = true;
}
return(bindingFound);
}