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TSL2 Framework Descriptor (currency-handling, generic formatter, descriptors for beans, collections, actions and values)

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/*
 * File: $HeadURL$
 * Id  : $Id$
 * 
 * created by: Thomas Schneider
 * created on: Jul 20, 2012
 * 
 * Copyright: (c) Thomas Schneider 2012, all rights reserved
 */
package de.tsl2.nano.bean.def;

import java.util.Collection;

import de.tsl2.nano.bean.IValueAccess;

/**
 * 
 * @author Thomas Schneider
 * @version $Revision$ 
 */
public interface ISelectionProvider extends IValueAccess> {
    /**
     * getFirstElement
     * @return first selected element or null
     */
    T getFirstElement();
    /**
     * isEmpty
     * @return true, if no selection available
     */
    boolean isEmpty();
}