    001/*
    002    Licensed to the Apache Software Foundation (ASF) under one
    003    or more contributor license agreements.  See the NOTICE file
    004    distributed with this work for additional information
    005    regarding copyright ownership.  The ASF licenses this file
    006    to you under the Apache License, Version 2.0 (the
    007    "License"); you may not use this file except in compliance
    008    with the License.  You may obtain a copy of the License at
    009
    010       http://www.apache.org/licenses/LICENSE-2.0
    011
    012    Unless required by applicable law or agreed to in writing,
    013    software distributed under the License is distributed on an
    014    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    015    KIND, either express or implied.  See the License for the
    016    specific language governing permissions and limitations
    017    under the License.
    018 */
    019package org.apache.wiki.tags;
    020
    021import org.apache.wiki.api.core.Attachment;
    022import org.apache.wiki.api.core.Engine;
    023import org.apache.wiki.api.core.Page;
    024import org.apache.wiki.render.RenderingManager;
    025
    026import java.io.IOException;
    027
    028/**
    029 *  Returns the parent of the currently requested page.  Weblog entries are recognized as subpages of the weblog page.
    030 *
    031 *  @since 2.0
    032 */
    033public class ParentPageNameTag extends WikiTagBase {
    034
    035    private static final long serialVersionUID = 0L;
    036
    037    /**
    038     * {@inheritDoc}
    039     */
    040    @Override
    041    public final int doWikiStartTag() throws IOException {
    042        final Engine engine = m_wikiContext.getEngine();
    043        final Page page = m_wikiContext.getPage();
    044
    045        if( page != null ) {
    046            if( page instanceof Attachment ) {
    047                pageContext.getOut().print( engine.getManager( RenderingManager.class ).beautifyTitle( ((Attachment)page).getParentName()) );
    048            } else {
    049                String name = page.getName();
    050                final int entrystart = name.indexOf("_blogentry_");
    051                if( entrystart != -1 ) {
    052                    name = name.substring( 0, entrystart );
    053                }
    054
    055                final int commentstart = name.indexOf("_comments_");
    056                if( commentstart != -1 ) {
    057                    name = name.substring( 0, commentstart );
    058                }
    059
    060                pageContext.getOut().print( engine.getManager( RenderingManager.class ).beautifyTitle(name) );
    061            }
    062        }
    063
    064        return SKIP_BODY;
    065    }
    066
    067}