1 /** 2 * This file Copyright (c) 2013-2018 Magnolia International 3 * Ltd. (http://www.magnolia-cms.com). All rights reserved. 4 * 5 * 6 * This file is dual-licensed under both the Magnolia 7 * Network Agreement and the GNU General Public License. 8 * You may elect to use one or the other of these licenses. 9 * 10 * This file is distributed in the hope that it will be 11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the 12 * implied warranty of MERCHANTABILITY or FITNESS FOR A 13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. 14 * Redistribution, except as permitted by whichever of the GPL 15 * or MNA you select, is prohibited. 16 * 17 * 1. For the GPL license (GPL), you can redistribute and/or 18 * modify this file under the terms of the GNU General 19 * Public License, Version 3, as published by the Free Software 20 * Foundation. You should have received a copy of the GNU 21 * General Public License, Version 3 along with this program; 22 * if not, write to the Free Software Foundation, Inc., 51 23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 24 * 25 * 2. For the Magnolia Network Agreement (MNA), this file 26 * and the accompanying materials are made available under the 27 * terms of the MNA which accompanies this distribution, and 28 * is available at http://www.magnolia-cms.com/mna.html 29 * 30 * Any modifications to this file must keep this entire header 31 * intact. 32 * 33 */ 34 package info.magnolia.ui.vaadin.integration; 35 36 import java.util.Collection; 37 import java.util.Collections; 38 39 import com.vaadin.v7.data.Item; 40 import com.vaadin.v7.data.Property; 41 42 /** 43 * Implementation of {@link Item} that does nothing. 44 */ 45 public class NullItem implements Item { 46 47 @Override 48 public Property getItemProperty(Object id) { 49 return null; 50 } 51 52 @Override 53 public Collection<?> getItemPropertyIds() { 54 return Collections.emptyList(); 55 } 56 57 @Override 58 public boolean addItemProperty(Object id, Property property) throws UnsupportedOperationException { 59 return false; 60 } 61 62 @Override 63 public boolean removeItemProperty(Object id) throws UnsupportedOperationException { 64 return false; 65 } 66 67 }