private async void OnMemberExpandedInternal(DataFilterFieldSelector fieldSelector)
{
var subfields = (await fieldSelector.Load()).ToArray();
if (subfields.Any())
{
var selectedMember = subfields.First();
MemberSelectors.Add(new DataFilterFieldSelector(this, subfields, selectedMember));
if (FilterDescriptor != null)
{
FilterDescriptor.Member = selectedMember.PropertyName;
}
}
}
/// <summary>
/// Notifies the selector that a member has been collapsed.
/// </summary>
/// <param name="fieldSelector">
/// The member selector.
/// </param>
public void OnMemberCollapsed(DataFilterFieldSelector fieldSelector)
{
if (fieldSelector == null)
throw new ArgumentNullException("fieldSelector");
if (FilterDescriptor != null)
{
FilterDescriptor.Member = fieldSelector.SelectedMember.PropertyName;
}
}
private void AddMemberSelectors(FieldPathPropertyDefinition propertyDefinition, bool isLast)
{
if (propertyDefinition.ParentProperty != null)
{
AddMemberSelectors(propertyDefinition.ParentProperty, false);
}
var availableMembers =
AvailableMembers.Select(x => x.ItemPropertyDefinition)
.OfType<FieldPathPropertyDefinition>()
.Where(x => x.ParentProperty == propertyDefinition.ParentProperty);
var memberSelector = new DataFilterFieldSelector(this, availableMembers, propertyDefinition, !isLast);
MemberSelectors.Add(memberSelector);
}
/// <summary>
/// Notifies the selector that a member has been expanded.
/// </summary>
/// <param name="fieldSelector">
/// The member selector.
/// </param>
public void OnMemberExpanded(DataFilterFieldSelector fieldSelector)
{
if (fieldSelector == null)
throw new ArgumentNullException("fieldSelector");
OnMemberExpandedInternal(fieldSelector);
}