/* Copyright (C) 2006 Christian Schneider
*
* This file is part of Nomad.
*
* Nomad is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Nomad 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 Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Nomad; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.sf.nmedit.nmutils.iterator;
import java.util.Iterator;
public abstract class RemoveSupport<T> implements Iterator<T>
{
private Iterator<T> iter;
private T removable;
public RemoveSupport(Iterator<T> iter)
{
this.iter = iter;
this.removable = null;
}
public boolean hasNext()
{
return iter.hasNext();
}
public T next()
{
return removable = iter.next();
}
public void remove()
{
if (removable == null)
throw new IllegalStateException();
T r = removable;
removable = null;
remove(r);
}
protected abstract void remove(T element);
}