/*
 * CharacterComboBoxModel.java
 * Missing License Header, Copyright 2016 (C) Andrew Maitland <amaitland@users.sourceforge.net>
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

package pcgen.gui2.tabs.models;

import javax.swing.ComboBoxModel;

import pcgen.facade.util.ReferenceFacade;
import pcgen.facade.util.event.ReferenceEvent;
import pcgen.facade.util.event.ReferenceListener;
import pcgen.facade.util.ListFacade;
import pcgen.gui2.util.FacadeListModel;

public abstract class CharacterComboBoxModel<E> extends FacadeListModel<E> implements ComboBoxModel, ReferenceListener<E>
{

	private ReferenceFacade<E> reference = null;
	protected Object selectedItem = null;

	public CharacterComboBoxModel()
	{
	}

	public CharacterComboBoxModel(ListFacade<E> list, ReferenceFacade<E> ref)
	{
		setListFacade(list);
		setReference(ref);
	}

	public void setReference(ReferenceFacade<E> ref)
	{
		if (reference != null)
		{
			reference.removeReferenceListener(this);
		}
		reference = ref;
		if (reference != null)
		{
			reference.addReferenceListener(this);
			setSelectedItem0(reference.get());
		}
	}

	@Override
	public Object getSelectedItem()
	{
		return selectedItem;
	}

	private void setSelectedItem0(Object item)
	{
		selectedItem = item;
		fireContentsChanged(this, -1, -1);
	}

	@Override
	public void referenceChanged(ReferenceEvent<E> e)
	{
		setSelectedItem0(e.getNewReference());
	}
}