001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.services.impl;
016    
017    import java.util.Iterator;
018    import java.util.Map;
019    
020    import org.apache.hivemind.util.ToStringBuilder;
021    import org.apache.tapestry.IComponent;
022    import org.apache.tapestry.IMarkupWriter;
023    import org.apache.tapestry.IRender;
024    import org.apache.tapestry.IRequestCycle;
025    import org.apache.tapestry.parse.LocalizationToken;
026    
027    /**
028     * A class used with invisible localizations. Constructed from a {@link TextToken}.
029     * 
030     * @author Howard Lewis Ship
031     * @since 3.0
032     */
033    
034    public class LocalizedStringRender implements IRender
035    {
036        private IComponent _component;
037    
038        private String _key;
039    
040        private Map _attributes;
041    
042        private String _value;
043    
044        private boolean _raw;
045    
046        public LocalizedStringRender(IComponent component, LocalizationToken token)
047        {
048            _component = component;
049            _key = token.getKey();
050            _raw = token.isRaw();
051            _attributes = token.getAttributes();
052        }
053    
054        public void render(IMarkupWriter writer, IRequestCycle cycle)
055        {
056            if (cycle.isRewinding())
057                return;
058    
059            if (_attributes != null)
060            {
061                writer.begin("span");
062    
063                Iterator i = _attributes.entrySet().iterator();
064    
065                while (i.hasNext())
066                {
067                    Map.Entry entry = (Map.Entry) i.next();
068                    String attributeName = (String) entry.getKey();
069                    String attributeValue = (String) entry.getValue();
070    
071                    writer.attribute(attributeName, attributeValue);
072                }
073            }
074    
075            if (_value == null)
076                _value = _component.getMessages().getMessage(_key);
077    
078            writer.print(_value, _raw);
079            
080            if (_attributes != null)
081                writer.end();
082        }
083    
084        public String toString()
085        {
086            ToStringBuilder builder = new ToStringBuilder(this);
087    
088            builder.append("component", _component);
089            builder.append("key", _key);
090            builder.append("raw", _raw);
091            builder.append("attributes", _attributes);
092    
093            return builder.toString();
094        }
095    
096    }