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.markdown.extensions.jspwikilinks.attributeprovider;
020
021import com.vladsch.flexmark.util.ast.Node;
022import com.vladsch.flexmark.util.html.MutableAttributes;
023import org.apache.oro.text.regex.Pattern;
024import org.apache.wiki.api.core.Context;
025import org.apache.wiki.markdown.nodes.JSPWikiLink;
026import org.apache.wiki.parser.LinkParsingOperations;
027import org.apache.wiki.parser.MarkupParser;
028
029import java.util.List;
030
031
032/**
033 * {@link NodeAttributeProviderState} which sets the attributes for external links.
034 */
035public class ExternalLinkAttributeProviderState implements NodeAttributeProviderState< JSPWikiLink > {
036
037    private final boolean hasRef;
038    private final boolean m_useRelNofollow;
039    private final Context wikiContext;
040    private final LinkParsingOperations linkOperations;
041    private final boolean isImageInlining;
042    private final List< Pattern > inlineImagePatterns;
043
044    public ExternalLinkAttributeProviderState( final Context wikiContext,
045                                               final boolean hasRef,
046                                               final boolean isImageInlining,
047                                               final List< Pattern > inlineImagePatterns ) {
048        this.hasRef = hasRef;
049        this.wikiContext = wikiContext;
050        this.linkOperations = new LinkParsingOperations( wikiContext );
051        this.isImageInlining = isImageInlining;
052        this.inlineImagePatterns = inlineImagePatterns;
053        this.m_useRelNofollow = wikiContext.getBooleanWikiProperty( MarkupParser.PROP_USERELNOFOLLOW, false );
054    }
055
056    /**
057     * {@inheritDoc}
058     *
059     * @see NodeAttributeProviderState#setAttributes(MutableAttributes, Node)
060     */
061    @Override
062    public void setAttributes( final MutableAttributes attributes, final JSPWikiLink link ) {
063        if( linkOperations.isImageLink( link.getUrl().toString(), isImageInlining, inlineImagePatterns ) ) {
064            new ImageLinkAttributeProviderState( wikiContext, link.getText().toString(), hasRef ).setAttributes( attributes, link );
065        } else {
066            attributes.replaceValue( "class", MarkupParser.CLASS_EXTERNAL );
067            attributes.replaceValue( "href", link.getUrl().toString() );
068        }
069        if( m_useRelNofollow ) {
070            attributes.replaceValue( "rel", "nofollow" );
071        }
072    }
073
074}