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XDEV Application Framework
There is a newer version: 6.0.2
/**
 *
 */
package com.xdev.jadoth.collections;

/*-
 * #%L
 * XDEV Application Framework
 * %%
 * Copyright (C) 2003 - 2020 XDEV Software
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import java.lang.ref.WeakReference;
import java.util.Collection;
import java.util.Iterator;

/**
 * @author Thomas Muenz
 *
 */
@Deprecated
public class WeakList
//implements XList
{
	///////////////////////////////////////////////////////////////////////////
	// instance fields //
	////////////////////

	private final XList> list;



	///////////////////////////////////////////////////////////////////////////
	// constructors //
	/////////////////

	/**
	 * @param list
	 */
	public WeakList(final XList> list)
	{
		super();
		this.list = list;
	}










	/**
	 * @param c
	 * @return
	 * @see java.util.List#addAll(java.util.Collection)
	 */
	public boolean addAll(final Collection c)
	{
		return this.list.addAll(new WeakRefView(c));
	}

	// (06.09.2010 TM)FIXME: WeakList: decorate this.list
}


final class WeakRefView implements Collection>
{
	private final Collection collection;

	WeakRefView(final Collection collection)
	{
		super();
		this.collection = collection;
	}

	@Override
	public Iterator> iterator()
	{
		return new Itr();
	}
	public boolean add(final WeakReference e)
	{
		return false;
	}
	public boolean addAll(final Collection> c)
	{
		return false;
	}
	public void clear()
	{

	}
	public boolean contains(final Object o)
	{
		return this.collection.contains(o);
	}
	public boolean containsAll(final Collection c)
	{
		return this.collection.containsAll(c);
	}
	@Override
	public boolean equals(final Object o)
	{
		return this.collection.equals(o);
	}
	@Override
	public int hashCode()
	{
		return this.collection.hashCode();
	}
	public boolean isEmpty()
	{
		return this.collection.isEmpty();
	}
	public boolean remove(final Object o)
	{
		return false;
	}
	public boolean removeAll(final Collection c)
	{
		return false;
	}
	public boolean retainAll(final Collection c)
	{
		return false;
	}
	public int size()
	{
		return this.collection.size();
	}
	public Object[] toArray()
	{
		return this.collection.toArray();
	}
	public  T[] toArray(final T[] a)
	{
		return this.collection.toArray(a);
	}

	class Itr implements Iterator>
	{
		private final Iterator itr = WeakRefView.this.collection.iterator();

		@Override
		public boolean hasNext()
		{
			return this.itr.hasNext();
		}
		@Override
		public WeakReference next()
		{
			final E element = this.itr.next();
			return element == null ?null :new WeakReference(element);
		}
		@Override
		public void remove() throws UnsupportedOperationException
		{
			throw new UnsupportedOperationException("Just a wrapper, don't try removing stuff with it!");
		}

	}

}