/// <summary>
/// Do the following when an Entity changes:
/// - Update roles in related Associations
/// </summary>
/// <param name="e"></param>
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
var changedProperty = e.ModelElement as Property;
Debug.Assert(changedProperty != null);
// this rule will fire if a PropertyRef gets deleted (this happens if a keyed property that has a sibling keyed property is deleted),
// in which case we ignore this change.
if (changedProperty.IsDeleted)
{
return;
}
Debug.Assert(changedProperty.EntityType != null && changedProperty.EntityType.EntityDesignerViewModel != null);
if (changedProperty != null &&
changedProperty.EntityType != null &&
changedProperty.EntityType.EntityDesignerViewModel != null)
{
var diagram = changedProperty.EntityType.EntityDesignerViewModel.GetDiagram();
Debug.Assert(diagram != null, "EntityDesignerDiagram is null");
// if EntityType property was changed and EntityDesignerDiagram's DisplayNameAndType flag is set to true, we need to refresh the entity shape diagram.
if (e.DomainProperty.Id == Property.TypeDomainPropertyId &&
null != diagram &&
diagram.DisplayNameAndType)
{
foreach (var pe in PresentationViewsSubject.GetPresentation(changedProperty.EntityType))
{
var entityShape = pe as EntityTypeShape;
if (entityShape != null)
{
entityShape.PropertiesCompartment.Invalidate(true);
}
}
}
var tx = ModelUtils.GetCurrentTx(e.ModelElement.Store);
Debug.Assert(tx != null);
// don't do the auto update stuff if we are in the middle of deserialization
if (tx != null &&
!tx.IsSerializing)
{
var viewModel = changedProperty.EntityType.EntityDesignerViewModel;
// ensure name is unique and valid if the name has changed
if (e.DomainProperty.Id == NameableItem.NameDomainPropertyId)
{
// if we are creating this, the old name will be empty so there is no 'change' to do
if (String.IsNullOrEmpty((string)e.OldValue))
{
return;
}
var modelProperty = viewModel.ModelXRef.GetExisting(changedProperty) as Model.Entity.Property;
Debug.Assert(modelProperty != null, "modelProperty is null");
string errorMessage;
if (!EDMModelUtils.ValidatePropertyName(modelProperty, changedProperty.Name, true, out errorMessage))
{
throw new InvalidOperationException(errorMessage);
}
ViewModelChangeContext.GetNewOrExistingContext(tx).ViewModelChanges.Add(new PropertyChange(changedProperty));
}
}
}
}
