/* * This file is part of LibrePlan * * Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e * Desenvolvemento Tecnolóxico de Galicia * Copyright (C) 2010-2011 Igalia, S.L. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.libreplan.web.common; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.zkoss.zk.ui.Component; /** * Utility for enforcing that only one of the supplied component is visible. * <br /> * @author Óscar González Fernández <ogonzalez@igalia.com> */ public class OnlyOneVisible { private List<Component> components; public OnlyOneVisible(Component... components) { this.components = new ArrayList<>(Arrays.asList(components)); showOnly(null); } public void showOnly(Component component) { if (!components.contains(component)) { components.add(component); } for (Component c : components) { if (c != null) { c.setVisible(component != null && c.equals(component)); } } } }