/// <summary>
/// RolePlayerChangeRule: typeof(Microsoft.VisualStudio.Modeling.Diagrams.LinkConnectsToNode)
/// External constraint shapes can only be drawn if they show all of their
/// links, so automatically remove them if a link is moved off the constraint
/// shape.
/// </summary>
private static void VerifyConnectedShapeShapeRolePlayerChangedRule(RolePlayerChangedEventArgs e)
{
ShapeElement shape;
if (e.DomainRole.Id == LinkConnectsToNode.NodesDomainRoleId &&
((LinkConnectsToNode)e.ElementLink).Link is ExternalConstraintLink &&
null != (shape = e.OldRolePlayer as ShapeElement))
{
ExternalConstraintShape constraintShape;
FactTypeShape factTypeShape;
if (null != (constraintShape = shape as ExternalConstraintShape))
{
FrameworkDomainModel.DelayValidateElement(constraintShape, DelayValidateExternalConstraintShapeFullyConnected);
}
else if (null != (factTypeShape = MultiShapeUtility.ResolvePrimaryShape(shape) as FactTypeShape))
{
FrameworkDomainModel.DelayValidateElement(factTypeShape, DelayValidateFactTypeShapeSize);
if (null != (shape = e.NewRolePlayer as ShapeElement) &&
null != (factTypeShape = MultiShapeUtility.ResolvePrimaryShape(shape) as FactTypeShape))
{
FrameworkDomainModel.DelayValidateElement(factTypeShape, DelayValidateFactTypeShapeSize);
}
}
}
}
/// <summary>
/// DeletingRule: typeof(Microsoft.VisualStudio.Modeling.Diagrams.LinkConnectsToNode)
/// External constraint shapes can only be drawn if they show all of their
/// links, so automatically remove them if a connecting shape is removed.
/// </summary>
private static void VerifyConnectedShapeShapeDeletingRule(ElementDeletingEventArgs e)
{
LinkConnectsToNode connectLink = (LinkConnectsToNode)e.ModelElement;
ExternalConstraintLink link;
ModelElement linkMel;
ModelElement shapeMel;
if (null != (link = connectLink.Link as ExternalConstraintLink) &&
null != (linkMel = link.ModelElement) &&
!linkMel.IsDeleting)
{
NodeShape linkNode = connectLink.Nodes;
ExternalConstraintShape constraintShape = linkNode as ExternalConstraintShape;
NodeShape oppositeShape = null;
// The ToShape (as opposed to FromShape) here needs to be in
// sync with the code in ConfiguringAsChildOf
if (constraintShape == null)
{
constraintShape = link.ToShape as ExternalConstraintShape;
oppositeShape = linkNode;
}
else
{
oppositeShape = link.FromShape;
}
if (oppositeShape != null &&
constraintShape != null &&
null != (shapeMel = constraintShape.ModelElement) &&
!shapeMel.IsDeleting)
{
if (!constraintShape.IsDeleting)
{
FrameworkDomainModel.DelayValidateElement(constraintShape, DelayValidateExternalConstraintShapeFullyConnected);
}
// Delay, fact type shape size will not be accurate until deletion is completed.
FactTypeShape factTypeShape = MultiShapeUtility.ResolvePrimaryShape(oppositeShape) as FactTypeShape;
if (factTypeShape != null &&
!factTypeShape.IsDeleting)
{
FrameworkDomainModel.DelayValidateElement(factTypeShape, DelayValidateFactTypeShapeSize);
}
}
}
}