/*
* @(#)SetWrapper.java
*
* Project: JHotdraw - a GUI framework for technical drawings
* http://www.jhotdraw.org
* http://jhotdraw.sourceforge.net
* Copyright: (c) by the original author(s) and all contributors
* License: Lesser GNU Public License (LGPL)
* http://www.opensource.org/licenses/lgpl-license.html
*/
package org.jhotdraw.util.collections.jdk11;
import java.util.*;
/**
* @author Wolfram Kaiser <mrfloppy@users.sourceforge.net>
* @version <$CURRENT_VERSION$>
*/
public class SetWrapper implements Set {
private Hashtable myDelegee;
public SetWrapper() {
myDelegee = new Hashtable();
}
public SetWrapper(Set initSet) {
myDelegee = new Hashtable();
Iterator iter = initSet.iterator();
while (iter.hasNext()) {
add(iter.next());
}
}
public int size() {
return myDelegee.size();
}
public boolean isEmpty() {
return myDelegee.isEmpty();
}
public boolean contains(Object o) {
return myDelegee.containsKey(o);
}
public Iterator iterator() {
return new IteratorWrapper(myDelegee.elements());
}
public Object[] toArray() {
return new Object[0];
}
public Object[] toArray(Object a[]) {
return new Object[0];
}
public boolean add(Object o) {
return myDelegee.put(o, o) == null;
}
public boolean remove(Object o) {
return myDelegee.remove(o) != null;
}
public boolean containsAll(Collection c) {
return false;
}
public boolean addAll(Collection c) {
return false;
}
public boolean retainAll(Collection c) {
return false;
}
public boolean removeAll(Collection c) {
return false;
}
public void clear() {
myDelegee.clear();
}
}