001    /*
002     * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    /* $Id: RelativeScriptlevelLayoutContext.java,v 8afef6dd0d58 2007/09/14 08:29:58 maxberger $ */
018    
019    package net.sourceforge.jeuclid.context;
020    
021    import net.sourceforge.jeuclid.LayoutContext;
022    
023    /**
024     * @version $Revision: 8afef6dd0d58 $
025     */
026    public class RelativeScriptlevelLayoutContext implements LayoutContext {
027    
028        private final LayoutContext parentLayoutContext;
029    
030        private final int sizeOffset;
031    
032        /**
033         * Default Constructor.
034         * 
035         * @param parent
036         *            LayoutContext of parent.
037         * @param offset
038         *            offset to parent. In most cases this will be 1.
039         * 
040         */
041        public RelativeScriptlevelLayoutContext(final LayoutContext parent,
042                final int offset) {
043            this.parentLayoutContext = parent;
044            this.sizeOffset = offset;
045        }
046    
047        /** {@inheritDoc} */
048        public Object getParameter(final Parameter which) {
049            if (Parameter.SCRIPTLEVEL.equals(which)) {
050                return ((Integer) this.parentLayoutContext
051                        .getParameter(Parameter.SCRIPTLEVEL))
052                        + this.sizeOffset;
053            }
054            return this.parentLayoutContext.getParameter(which);
055        }
056    }