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package cdc.applic.dictionaries.edit;
import java.util.ArrayList;
import java.util.List;
import cdc.util.lang.Checks;
/**
* Base class of owned elements (they have a owner).
*
* @author Damien Carbonne
*
* @param The owner type. The concrete owner may derive from it.
*/
public abstract class EnAbstractOwnedElement extends EnAbstractElement implements EnOwnedElement {
private O owner;
protected EnAbstractOwnedElement(Builder builder) {
super(builder.fixId());
this.owner = Checks.isNotNull(builder.owner, EnNames.OWNER);
}
protected final void addToOwner() {
((EnAbstractElement) getOwner()).addChild(this);
}
private final void removeFromOwner() {
((EnAbstractElement) getOwner()).removeChild(this);
}
@Override
public O getOwner() {
return owner;
}
protected > EnRef getRef(Class elementClass) {
return EnRef.of(getOwner(), elementClass, getId());
}
public abstract EnRef> getRef();
/**
* Recursively removes this element and its children.
*
* Children are removed first.
*/
public void remove() {
final EnRepository repository = getRepository();
final List> todo = new ArrayList<>(getChildren());
for (final EnAbstractOwnedElement child : todo) {
child.remove();
}
removeFromOwner();
this.owner = null;
repository.removeFromRepository(this);
}
public boolean isAlive() {
return this.owner != null;
}
public boolean isDead() {
return this.owner == null;
}
@Override
public int getIndex() {
return ((EnAbstractElement) owner).getChildIndex(this);
}
@Override
public EnRepository getRepository() {
return getOwner().getRepository();
}
/**
* Base builder of children elements.
*
* @author Damien Carbonne
*
* @param The builder type.
* @param The built element type.
* @param The concrete parent type.
*/
public abstract static class Builder,
E extends EnAbstractOwnedElement,
O extends EnElement>
extends EnAbstractElement.Builder {
protected final O owner;
protected Builder(O owner) {
this.owner = owner;
}
protected B fixId() {
if (!hasId()) {
id(getRepository().newId(getBuiltClass()));
}
return self();
}
protected E wrap(E element) {
return getRepository().addToRepository(element);
}
/**
* @return The owner element.
*/
public O getOwner() {
return owner;
}
/**
* @return The root model.
*/
public EnRepository getRepository() {
return owner.getRepository();
}
protected X getItemWithId(String id,
Class itemClass) {
return getRepository().getElementWithId(id, itemClass);
}
/**
* Build the element and returns its parent.
*
* @return The concrete parent of the built element.
*/
public O back() {
build();
return owner;
}
}
}