001    // Copyright 2007, 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     * A token from a template that defines a namespace prefix. This will always follow a {@link
024     * org.apache.tapestry5.internal.parser.StartComponentToken} or {@link org.apache.tapestry5.internal.parser.StartElementToken}
025     * (and come before {@link org.apache.tapestry5.internal.parser.AttributeToken}) and applies to the component or
026     * element.
027     *
028     * @see org.apache.tapestry5.dom.Element#defineNamespace(String, String)
029     */
030    public class DefineNamespacePrefixToken extends TemplateToken implements RenderCommand
031    {
032        public final String namespaceURI;
033    
034        public final String namespacePrefix;
035    
036        public DefineNamespacePrefixToken(String namespaceURI, String namespacePrefix, Location location)
037        {
038            super(TokenType.DEFINE_NAMESPACE_PREFIX, location);
039    
040            this.namespacePrefix = namespacePrefix;
041            this.namespaceURI = namespaceURI;
042        }
043    
044        @Override
045        public String toString()
046        {
047            return String.format("DefineNamespacePrefix[%s=%s]", namespacePrefix, namespaceURI);
048        }
049    
050        public void render(MarkupWriter writer, RenderQueue queue)
051        {
052            writer.defineNamespace(namespaceURI, namespacePrefix);
053        }
054    
055    }