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
015package org.apache.tapestry5.internal.parser;
016
017import org.apache.tapestry5.MarkupWriter;
018import org.apache.tapestry5.ioc.Location;
019import org.apache.tapestry5.runtime.RenderCommand;
020import 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 */
029public 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}