
package net.sourceforge.guacamole.properties;

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is guacamole-ext.
 *
 * The Initial Developer of the Original Code is
 * Michael Jumper.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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import net.sourceforge.guacamole.GuacamoleException;
import net.sourceforge.guacamole.GuacamoleServerException;

/**
 * A GuacamoleProperty whose value is an boolean. Legal true values are "true",
 * or "false". Case does not matter.
 *
 * @author Michael Jumper
 */
public abstract class BooleanGuacamoleProperty implements GuacamoleProperty<Boolean> {

    @Override
    public Boolean parseValue(String value) throws GuacamoleException {

        // If no property provided, return null.
        if (value == null)
            return null;

        // If "true", return true
        if (value.equalsIgnoreCase("true"))
            return true;

        // If "false", return false
        if (value.equalsIgnoreCase("false"))
            return false;

        // Otherwise, fail
        throw new GuacamoleServerException("Property \"" + getName()
                + "\" must be either \"true\" or \"false\".");

    }

}

Implement BooleanGuacamoleProperty.