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.model;
016    
017    import java.util.Iterator;
018    
019    /**
020     * Defines a list model of ITableColumn objects.
021     * 
022     * @author mindbridge
023     */
024    public interface ITableColumnModel
025    {
026    
027        /**
028         * Method getColumnCount.
029         * 
030         * @return int the number of columns in the model
031         */
032        int getColumnCount();
033    
034        /**
035         * Method getColumn.
036         * 
037         * @param strName
038         *            the name of the requested column
039         * @return ITableColumn the column with the given name. null if no such
040         *         column exists.
041         */
042        ITableColumn getColumn(String strName);
043    
044        /**
045         * Method getColumns.
046         * 
047         * @return Iterator an iterator of all columns in the model
048         */
049        Iterator getColumns();
050    }