zkoss/zk

/* PortletModes.java

    Purpose:
        
    Description:
        
    History:
        Tue Jan 11 17:41:30     2005, Created by tomyeh

Copyright (C) 2004 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
    This program is distributed under LGPL Version 2.1 in the hope that
    it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.web.portlet;

import java.util.HashMap;
import java.util.Map;

import javax.portlet.PortletMode;

/**
 * Utilities to handles {@link PortletMode}.
 *
 * @author tomyeh
 */
public class PortletModes {
    private PortletModes() {
        //no instance
    }

    /** Returns the portlet mode of the specified name.
     */
    public static final PortletMode toPortletMode(String modeName) {
        PortletMode mode = _modes.get(modeName);
        if (mode == null) {
            synchronized (_modes) {
                mode = _modes.computeIfAbsent(modeName, k -> new PortletMode(modeName));
            }
        }
        return mode;
    }

    private static final Map<String, PortletMode> _modes = new HashMap<String, PortletMode>(4);

    static {
        _modes.put("EDIT", PortletMode.EDIT);
        _modes.put("HELP", PortletMode.HELP);
        _modes.put("VIEW", PortletMode.VIEW);
    }
}