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.contrib.table.components;
016    
017    import org.apache.tapestry.contrib.table.model.ITableModelSource;
018    
019    /**
020     * A modified version of the facade component in the Table family. 
021     * FormTable allows you to present a sortable and pagable table 
022     * within a form by using only this one component.
023     * 
024     *  [<a href="../../../../../../../ComponentReference/contrib.FormTable.html">Component Reference</a>]
025     * 
026     * @author mindbridge
027     *
028     */
029    public abstract class FormTable extends Table implements ITableModelSource
030    {
031        // parameters
032        public abstract Object getColumns();
033    
034        /**
035         *  If the columns are defined via a String, make sure they use 
036         *  the form-specific column headers.
037         */
038        public Object getFormColumns()
039        {
040            Object objColumns = getColumns();
041            if (objColumns instanceof String)
042                objColumns = "*" + objColumns;
043            return objColumns;
044        }
045    
046    }