org.xwiki.rendering.block.SpaceBlock Maven / Gradle / Ivy

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/*
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This 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 software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.xwiki.rendering.block;

import org.xwiki.rendering.listener.Listener;

/**
 * A space block represents a space. Note that we don't make SpaceBlock a singleton since that would cause problems when
 * using Block APIs to manipulate a tree of blocks (for example to find the position of a space block in a list using
 * {@link java.util.List#indexOf(Object)} which would always return the first space block).
 *
 * @version $Id: 6562a3af2ff638b24e8931a8814e3453592402de $
 * @since 1.5M2
 */
public final class SpaceBlock extends AbstractBlock
{
    @Override
    public void traverse(Listener listener)
    {
        listener.onSpace();
    }

    @Override
    public String toString()
    {
        return " ";
    }
}