/// <summary>
/// Performs the business logic for adding the Parent relationship between the person and the parents.
/// </summary>
public static void AddParent(UMLCollection family, Shape shape, ParentSet parentSet)
{
// First add child to parents.
family.AddChild(parentSet.FirstParent, shape, ParentChildModifier.Natural);
family.AddChild(parentSet.SecondParent, shape, ParentChildModifier.Natural);
// Next update the siblings. Get the list of full siblings for the person.
// A full sibling is a sibling that has both parents in common.
List <Shape> siblings = GetChildren(parentSet);
foreach (Shape sibling in siblings)
{
if (sibling != shape)
{
family.AddSibling(shape, sibling);
}
}
}
/// <summary>
/// Return a list of children for the parent set.
/// </summary>
private static List <Shape> GetChildren(ParentSet parentSet)
{
// Get list of both parents.
List <Shape> firstParentChildren = new List <Shape>(parentSet.FirstParent.Children);
List <Shape> secondParentChildren = new List <Shape>(parentSet.SecondParent.Children);
// Combined children list that is returned.
List <Shape> children = new List <Shape>();
// Go through and add the children that have both parents.
foreach (Shape child in firstParentChildren)
{
if (secondParentChildren.Contains(child))
{
children.Add(child);
}
}
return(children);
}
/// <summary>
/// Performs the business logic for changing the person parents
/// </summary>
public static void ChangeParents(UMLCollection family, Shape shape, ParentSet newParentSet)
{
// Don't do anything if there is nothing to change or if the parents are the same
if (shape.ParentSet == null || newParentSet == null || shape.ParentSet.Equals(newParentSet))
{
return;
}
// store the current parent set which will be removed
ParentSet formerParentSet = shape.ParentSet;
// Remove the first parent
RemoveParentChildRelationship(shape, formerParentSet.FirstParent);
// Remove the person as a child of the second parent
RemoveParentChildRelationship(shape, formerParentSet.SecondParent);
// Remove the sibling relationships
RemoveSiblingRelationships(shape);
// Add the new parents
AddParent(family, shape, newParentSet);
}