package jrex;


import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.swing.AbstractListModel;
import javax.swing.MutableComboBoxModel;

/**
 * A mutable combo/list model.
 *
 * @author Mark
 */
@SuppressWarnings({"rawtypes", "unchecked"})
public class SimpleListModel extends AbstractListModel implements MutableComboBoxModel {

	private List items;
	private Object selectedItem;

	public SimpleListModel() {
		items = new ArrayList();
	}

	public SimpleListModel(Collection items) {
		this.items = new ArrayList(items);
	}

	@Override
	public int getSize() {
		return items.size();
	}

	@Override
	public Object getElementAt(int index) {
		return items.get(index);
	}

	@Override
	public void addElement(Object obj) {
		items.add(obj);
		fireIntervalAdded(this, items.size() - 1, items.size() - 1);
	}

	@Override
	public void removeElement(Object obj) {
		int index = items.indexOf(obj);
		if (index != -1) {
			removeElementAt(index);
		}
	}

	@Override
	public void insertElementAt(Object obj, int index) {
		items.add(index, obj);
		fireIntervalAdded(this, index, index);
	}

	@Override
	public void removeElementAt(int index) {
		items.remove(index);
		fireIntervalRemoved(this, index, index);
	}

	@Override
	public void setSelectedItem(Object anItem) {
		this.selectedItem = anItem;
		fireContentsChanged(this, -1, -1);
	}

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

	public void updateItems(Collection newItems) {
		int oldSize = this.items.size();
		this.items = new ArrayList(newItems);
		fireContentsChanged(this, -1, oldSize - 1);
	}

	public void updateItems(Object item) {
		int oldSize = this.items.size();
		this.items.clear();
		if (item != null) {
			this.items.add(item);
		}
		fireContentsChanged(this, -1, oldSize - 1);
	}

	public boolean contains(Object obj) {
		return this.items.contains(obj);
	}

	public int indexOf(Object obj) {
		return this.items.indexOf(obj);
	}

	public void clear() {
		this.items.clear();
		fireContentsChanged(this, -1, -1);
	}

	public Collection getAll() {
		return items;
	}
}