/// <summary>
/// Gets the combination of parent sets for this person and his/her spouses
/// </summary>
/// <returns></returns>
public ParentSetCollection MakeParentSets()
{
ParentSetCollection parentSets = new ParentSetCollection();
foreach (Person spouse in Spouses)
{
ParentSet ps = new ParentSet(this, spouse);
// Don't add the same parent set twice.
if (!parentSets.Contains(ps))
{
parentSets.Add(ps);
}
}
return(parentSets);
}
/// <summary>
/// Performs the business logic for adding the Parent relationship between the person and the parents.
/// </summary>
public static void AddParent(PeopleCollection family, Person person, ParentSet parentSet)
{
// First add child to parents.
family.AddChild(parentSet.FirstParent, person, ParentChildModifier.Natural);
family.AddChild(parentSet.SecondParent, person, 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 <Person> siblings = GetChildren(parentSet);
foreach (Person sibling in siblings)
{
if (sibling != person)
{
family.AddSibling(person, sibling);
}
}
}
/// <summary>
/// Return a list of children common to both parents in the parent set.
/// </summary>
private static List <Person> GetChildren(ParentSet parentSet)
{
// Get list of both parents.
List <Person> firstParentChildren = new List <Person>(parentSet.FirstParent.Children);
List <Person> secondParentChildren = new List <Person>(parentSet.SecondParent.Children);
// Combined children list that is returned.
List <Person> children = new List <Person>();
// Go through and add the children that have both parents.
foreach (Person 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(PeopleCollection family, Person person, ParentSet newParentSet)
{
// Don't do anything if there is nothing to change or if the parents are the same
if (person.ParentSet == null || newParentSet == null || person.ParentSet.Equals(newParentSet))
{
return;
}
// store the current parent set which will be removed
ParentSet formerParentSet = person.ParentSet;
// Remove the first parent
RemoveParentChildRelationship(person, formerParentSet.FirstParent);
// Remove the person as a child of the second parent
RemoveParentChildRelationship(person, formerParentSet.SecondParent);
// Remove the sibling relationships
RemoveSiblingRelationships(person);
// Add the new parents
AddParent(family, person, newParentSet);
}