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
015package org.apache.tapestry.services.impl;
016
017import java.util.Iterator;
018import java.util.Map;
019
020import org.apache.hivemind.util.ToStringBuilder;
021import org.apache.tapestry.IComponent;
022import org.apache.tapestry.IMarkupWriter;
023import org.apache.tapestry.IRender;
024import org.apache.tapestry.IRequestCycle;
025import 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
034public 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}