001    // Copyright 2006, 2009, 2011 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.tapestry5.internal.parser;
016    
017    import org.apache.tapestry5.MarkupWriter;
018    import org.apache.tapestry5.ioc.Location;
019    import org.apache.tapestry5.runtime.RenderCommand;
020    import org.apache.tapestry5.runtime.RenderQueue;
021    
022    /**
023     * The start of an ordinary element within the template (as opposed to {@link org.apache.tapestry5.internal.parser.StartComponentToken},
024     * which represents an active Tapestry token. A start element token may be immediately followed by {@link
025     * org.apache.tapestry5.internal.parser.AttributeToken}s that represents the attributes associated with the element. A
026     * start element token will always be balanced by a {@link org.apache.tapestry5.internal.parser.EndElementToken} (though
027     * there will likely be some amount of intermediate tokens).
028     */
029    public class StartElementToken extends TemplateToken implements RenderCommand
030    {
031        public final String namespaceURI;
032    
033        public final String name;
034    
035        public StartElementToken(String namespaceURI, String name, Location location)
036        {
037            super(TokenType.START_ELEMENT, location);
038    
039            this.namespaceURI = namespaceURI;
040            this.name = name;
041        }
042    
043        @Override
044        public String toString()
045        {
046            StringBuilder builder = new StringBuilder("Start[");
047    
048            if (namespaceURI != null && namespaceURI.length() > 0) builder.append(namespaceURI).append(" ");
049    
050            builder.append(name).append("]");
051    
052            return builder.toString();
053        }
054    
055        public void render(MarkupWriter writer, RenderQueue queue)
056        {
057            writer.elementNS(namespaceURI, name);
058        }
059    }