Java tutorial
/** * This file Copyright (c) 2011-2015 Magnolia International * Ltd. (http://www.magnolia-cms.com). All rights reserved. * * * This file is dual-licensed under both the Magnolia * Network Agreement and the GNU General Public License. * You may elect to use one or the other of these licenses. * * This file is distributed in the hope that it will be * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. * Redistribution, except as permitted by whichever of the GPL * or MNA you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or * modify this file under the terms of the GNU General * Public License, Version 3, as published by the Free Software * Foundation. You should have received a copy of the GNU * General Public License, Version 3 along with this program; * if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * 2. For the Magnolia Network Agreement (MNA), this file * and the accompanying materials are made available under the * terms of the MNA which accompanies this distribution, and * is available at http://www.magnolia-cms.com/mna.html * * Any modifications to this file must keep this entire header * intact. * */ package info.magnolia.ui.vaadin.extension; import com.vaadin.server.AbstractClientConnector; import com.vaadin.server.AbstractExtension; import com.vaadin.ui.AbstractTextField; /** * An {@link AbstractTextField}-compatible extension which adds an indicator of maximum possible vs currently entered amount of characters in an input.<br/> * This extension is only meant for the text fields with the <i>maxLength</i> property defined. * * @see com.vaadin.ui.TextField * @see com.vaadin.ui.TextArea */ public class MaxLengthIndicator extends AbstractExtension { public static void extend(AbstractTextField field) { new MaxLengthIndicator().extend((AbstractClientConnector) field); } }