public PropertyDescriptorCollection Build()
{
foreach (var propertyDescriptorItem in updatedAttributes.Values)
{
var newAttributes = propertyDescriptorItem.Attributes.ToArray();
var propertyDescriptorToReplace = propertyDescriptorItem.PropertyDescriptorToReplace;
if (propertyDescriptorToReplace != null)
{
PropertyDescriptor newDescriptor;
if (propertyDescriptorToReplace is ElementPropertyDescriptor)
{
ElementPropertyDescriptor elementPropertyDescriptor = propertyDescriptorToReplace as ElementPropertyDescriptor;
newDescriptor = new ElementPropertyDescriptor(Element, elementPropertyDescriptor.DomainPropertyInfo, newAttributes);
}
else
{
RolePlayerPropertyDescriptor rolePlayerPropertyDescriptor = propertyDescriptorToReplace as RolePlayerPropertyDescriptor;
newDescriptor = new RolePlayerPropertyDescriptor(Element, rolePlayerPropertyDescriptor.DomainRoleInfo, newAttributes);
}
propertyDescriptors.Remove(propertyDescriptorToReplace);
propertyDescriptors.Add(newDescriptor);
}
}
return(propertyDescriptors);
}
private static PropertyDescriptor FindRolePlayerPropertyDescriptorInternal(PropertyDescriptorCollection propertyDescriptors, Type propertyType, string propertyName, Guid oppositeDomainRoleId)
{
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
RolePlayerPropertyDescriptor rolePlayerPropertyDescriptor = propertyDescriptor as RolePlayerPropertyDescriptor;
if ((rolePlayerPropertyDescriptor != null && rolePlayerPropertyDescriptor.DomainRoleInfo.Id == oppositeDomainRoleId) ||
(propertyDescriptor.PropertyType == propertyType && propertyDescriptor.Name == propertyName))
{
return(propertyDescriptor);
}
}
return(null);
}
/// <summary>
/// Replaces <see cref="ElementTypeDescriptor.GetProperties(Attribute[])"/>.
/// </summary>
/// <seealso cref="ElementTypeDescriptor.GetProperties(Attribute[])"/>
public override PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
PropertyDescriptorCollection propertyDescriptors = new PropertyDescriptorCollection(null);
TModelElement requestor = this.ModelElement;
if (!requestor.IsDeleted && !requestor.IsDeleting)
{
// Get the property descriptors for our DomainProperties.
foreach (DomainPropertyInfo domainPropertyInfo in requestor.GetDomainClass().AllDomainProperties)
{
// Give derived types an opportunity to skip the current property.
if (!this.ShouldCreatePropertyDescriptor(requestor, domainPropertyInfo))
{
continue;
}
ElementPropertyDescriptor propertyDescriptor =
this.CreatePropertyDescriptor(requestor, domainPropertyInfo, this.GetDomainPropertyAttributes(domainPropertyInfo));
if (propertyDescriptor != null)
{
propertyDescriptors.Add(propertyDescriptor);
}
}
bool includeOppositeRolePlayerProperties = this.IncludeOppositeRolePlayerProperties(requestor);
bool includeEmbeddingRelationshipProperties = this.IncludeEmbeddingRelationshipProperties(requestor);
// Get the property descriptors for the DomainRoles we play.
if (includeOppositeRolePlayerProperties || includeEmbeddingRelationshipProperties)
{
HashSet <string, string> oppositePropertyNames =
new HashSet <string, string>(KeyProvider <string, string> .Default, StringComparer.Ordinal, StringComparer.Ordinal);
foreach (DomainRoleInfo playedRole in requestor.GetDomainClass().AllDomainRolesPlayed)
{
// We only want to get property descriptors for DomainRoles when any derived types
// have opted in, and the current property has at most one value.
if (includeOppositeRolePlayerProperties && playedRole.IsOne)
{
string playedRolePropertyName = playedRole.PropertyName;
DomainRoleInfo oppositeRole = playedRole.OppositeDomainRole;
// Make sure that the opposite role player has a name (so that we have something to display),
// that we don't already have an opposite role player property with this name, and that any
// derived types approve of creating a property descriptor for this DomainRole.
if (oppositeRole.RolePlayer.NameDomainProperty != null &&
!oppositePropertyNames.Contains(playedRolePropertyName) &&
this.ShouldCreateRolePlayerPropertyDescriptor(requestor, playedRole))
{
RolePlayerPropertyDescriptor propertyDescriptor =
this.CreateRolePlayerPropertyDescriptor(requestor, oppositeRole, this.GetRolePlayerPropertyAttributes(playedRole));
if (propertyDescriptor != null)
{
propertyDescriptors.Add(propertyDescriptor);
oppositePropertyNames.Add(playedRolePropertyName);
}
}
}
// If any derived types have opted in, and this relationship embeds us within another ModelElement,
// we'll include all of the properties from the instances of this relationship.
if (includeEmbeddingRelationshipProperties &&
playedRole.DomainRelationship.IsEmbedding &&
!playedRole.DomainRelationship.AllowsDuplicates &&
!playedRole.IsEmbedding)
{
// We exclude any ElementLinks attached to derived role players, since they'll be picked up separately.
foreach (ElementLink elementLink in playedRole.GetElementLinks <ElementLink>(requestor, true))
{
foreach (PropertyDescriptor propertyDescriptor in TypeDescriptor.GetProperties(elementLink))
{
propertyDescriptors.Add(propertyDescriptor);
}
}
}
}
}
// Add any extension properties
((IFrameworkServices)requestor.Store).PropertyProviderService.GetProvidedProperties(requestor, propertyDescriptors);
}
return(propertyDescriptors);
}
