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.wml;
016    
017    import org.apache.tapestry.IMarkupWriter;
018    import org.apache.tapestry.IRequestCycle;
019    
020    /**
021     * The postfield element specifies a field name and value for transmission to an
022     * origin server during a URL request.
023     * 
024     * @see Go
025     * @author David Solis
026     * @since 3.0
027     */
028    
029    public abstract class Postfield extends AbstractPostfield
030    {
031    
032        /**
033         * @see org.apache.tapestry.form.AbstractFormComponent#rewindFormComponent(org.apache.tapestry.IMarkupWriter,
034         *      org.apache.tapestry.IRequestCycle)
035         */
036        protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle)
037        {
038            String value = cycle.getParameter(getName());
039            updateValue(value);
040        }
041    }