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.tree.simple;
016    
017    import org.apache.tapestry.contrib.tree.model.ITreeModel;
018    import org.apache.tapestry.contrib.tree.model.ITreeSessionStateManager;
019    
020    /**
021     * @author ceco
022     */
023    public class NullSessionStateManager implements ITreeSessionStateManager
024    {
025    
026        /**
027         * Constructor for NullSessionStateManager.
028         */
029        public NullSessionStateManager()
030        {
031            super();
032        }
033    
034        /**
035         * @see org.apache.tapestry.contrib.tree.model.ITreeSessionStateManager#getSessionState(ITreeModel)
036         */
037        public Object getSessionState(ITreeModel objModel)
038        {
039            return null;
040        }
041    
042        /**
043         * @see org.apache.tapestry.contrib.tree.model.ITreeSessionStateManager#getModel(Object)
044         */
045        public ITreeModel getModel(Object objSessionState)
046        {
047            return null;
048        }
049    
050    }