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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * For further information about Alkacon Software, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.gwt.client.util;

import com.google.gwt.user.client.ui.UIObject;

/**
 * This is a helper class for changing GWT UIObjects' styles between a set of given values.

* * Every time a new value is set, the previous value of the style variable will be removed * from all associated UI objects, and the new style name will be added. * * @since 8.0.0 * */ public class CmsStyleVariable { /** The ui objects associated with this style variable. */ private final UIObject[] m_uis; /** The current style value. */ private String m_style; /** * Creates a new instance.

* * @param uis the list of UI objects to associate with this style variable */ public CmsStyleVariable(UIObject... uis) { m_uis = uis; } /** * Returns the current style value.

* * @return the current style value, or null if non is set */ public String getValue() { return m_style; } /** * Removes the previous value of the style variable from all associated ui objects * and adds the new value as a style name to all of them.

* * @param newStyle the new style name */ public void setValue(String newStyle) { for (UIObject ui : m_uis) { if (m_style != null) { ui.removeStyleName(m_style); } if (newStyle != null) { ui.addStyleName(newStyle); } } m_style = newStyle; } }





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