/*
 * Rapid Beans Framework: ModelListChoice.java
 * 
 * Copyright (C) 2009 Martin Bluemel
 * 
 * Creation Date: 02/22/2006
 * 
 * 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 Lesser General Public License for more details.
 * You should have received a copies of the GNU Lesser General Public License and the
 * GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

package org.rapidbeans.presentation.swing;

import java.util.Collection;
import java.util.List;

import javax.swing.DefaultListModel;

import org.rapidbeans.core.basic.PropertyChoice;
import org.rapidbeans.core.basic.RapidBean;

/**
 * the combo box model for BBEnums.
 * 
 * @author Martin Bluemel
 */
public final class ModelListChoice extends DefaultListModel {

	/**
	 * serial id.
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * the enum type.
	 */
	private PropertyChoice choiceProp = null;

	/**
	 * constructor.
	 * 
	 * @param etype
	 *            the RapidEnum type
	 */
	public ModelListChoice(final PropertyChoice prop) {
		this.choiceProp = prop;
	}

	/**
	 * @return the number of enum elements
	 */
	public int getSize() {
		final Collection<?> chosen = this.choiceProp.getValue();
		if (chosen == null) {
			return 0;
		} else {
			return chosen.size();
		}
	}

	/**
	 * @param index
	 *            the index
	 * @return the enum of index
	 */
	public Object getElementAt(final int index) {
		final List<?> chosen = this.choiceProp.getValue();
		if (chosen == null) {
			return null;
		} else {
			return chosen.get(index);
		}
	}

	/**
	 * fire.
	 * 
	 * @param bean
	 *            the bean added
	 */
	public void fireBeanAdded(final RapidBean bean) {
		if (this.choiceProp.getValue() == null) {
			this.fireContentsChanged(this, 0, 0);
		} else {
			this.fireContentsChanged(this, 0, this.choiceProp.getValue().size());
		}
	}

	/**
	 * fire.
	 * 
	 * @param bean
	 *            the bean removed
	 */
	public void fireBeanRemoved(final RapidBean bean) {
		if (this.choiceProp.getValue() == null) {
			this.fireContentsChanged(this, 0, 0);
		} else {
			this.fireContentsChanged(this, 0, this.choiceProp.getValue().size());
		}
	}

	/**
	 * fire.
	 * 
	 * @param prop
	 *            the choice property changed
	 */
	public void fireChoicePropChanged(final PropertyChoice prop) {
		if (prop.getValue() == null) {
			this.fireContentsChanged(this, 0, 0);
		} else {
			this.fireContentsChanged(this, 0, prop.getValue().size());
		}
	}
}