    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.ContextEnum;
    022import org.apache.wiki.api.core.Engine;
    023import org.apache.wiki.i18n.InternationalizationManager;
    024import org.apache.wiki.preferences.Preferences;
    025import org.apache.wiki.rss.RSSGenerator;
    026
    027import jakarta.servlet.jsp.JspWriter;
    028import java.io.IOException;
    029import java.text.MessageFormat;
    030import java.util.ResourceBundle;
    031
    032/**
    033 *  Writes an image link to a JSPWiki RSS file.  If RSS generation has
    034 *  been turned off in jspwiki.properties, returns an empty string.
    035 *
    036 *  @since 2.0
    037 */
    038public class RSSImageLinkTag
    039    extends WikiTagBase
    040{
    041    private static final long serialVersionUID = 0L;
    042
    043    protected String m_title;
    044    private   String m_mode;
    045    private   String m_pageName;
    046
    047    /**
    048     *  {@inheritDoc}
    049     */
    050    @Override
    051    public void initTag()
    052    {
    053        super.initTag();
    054        m_title = null;
    055        m_mode  = RSSGenerator.MODE_FULL;
    056        m_pageName = null;
    057    }
    058
    059    /**
    060     *  Sets the title for the link.  If not defined, no title is shown.
    061     *
    062     *  @param title A string for the title.
    063     */
    064    public void setTitle( final String title )
    065    {
    066        m_title = title;
    067    }
    068
    069    public void setMode( final String mode )
    070    {
    071        m_mode = mode;
    072    }
    073
    074
    075    /**
    076     *  Returns the title.
    077     *
    078     *  @return The title.
    079     */
    080    public String getTitle()
    081    {
    082        return m_title;
    083    }
    084
    085    /**
    086     *  {@inheritDoc}
    087     */
    088    @Override
    089    public final int doWikiStartTag() throws IOException {
    090        final Engine engine = m_wikiContext.getEngine();
    091        final JspWriter out = pageContext.getOut();
    092        final ResourceBundle rb = Preferences.getBundle( m_wikiContext, InternationalizationManager.CORE_BUNDLE );
    093        if( engine.getManager( RSSGenerator.class ) != null && engine.getManager( RSSGenerator.class ).isEnabled() ) {
    094            if( RSSGenerator.MODE_FULL.equals(m_mode) ) {
    095                final String rssURL = engine.getGlobalRSSURL();
    096                if( rssURL != null ) {
    097                    out.print("<a class=\"feed\" href=\""+rssURL);
    098                    out.print( " title='"+rb.getString( "rss.title.full" )+"'>" );
    099                    out.print( "&nbsp;</a> ");
    100                }
    101            } else {
    102                final String page = m_pageName != null ? m_pageName : m_wikiContext.getPage().getName();
    103                final String params = "page="+page+"&mode="+m_mode;
    104                out.print( "<a href='"+m_wikiContext.getURL( ContextEnum.PAGE_NONE.getRequestContext(), "rss.jsp", params ));
    105                out.print( "' class='feed'" );
    106                out.print( " title='"+MessageFormat.format( rb.getString( "rss.title" ), page )+"'>" );
    107                out.print( "&nbsp;</a> ");
    108            }
    109        }
    110
    111        return SKIP_BODY;
    112    }
    113
    114}