/*
* 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 java.util.HashMap;
import java.util.Map;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style;
/**
* This is a utility class for saving and restoring CSS style properties of a DOM element.<p>
*
* @since 8.0.0
*/
public class CmsStyleSaver {
/** The element for which the CSS style properties are saved. */
private Element m_element;
/** The values of the saved style properties. */
private Map<String, String> m_propertyValues = new HashMap<String, String>();
/**
* Creates a new instance for an element and saves some of its style properties.<p>
*
* @param elem the DOM element
* @param properties the style properties to save
*/
public CmsStyleSaver(Element elem, String... properties) {
m_element = elem;
Style style = elem.getStyle();
for (String prop : properties) {
String val = style.getProperty(prop);
m_propertyValues.put(prop, val);
}
}
/**
* Restores all saved style properties on this instance's DOM element.<p>
*/
public void restore() {
Style style = m_element.getStyle();
for (Map.Entry<String, String> entry : m_propertyValues.entrySet()) {
style.setProperty(entry.getKey(), entry.getValue());
}
}
}