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.model;
016    
017    import java.util.Set;
018    
019    /**
020     * @author ceco
021     */
022    
023    public interface ITreeStateModel {
024            Set getExpandSelection();
025            /*
026             * Return the selected node unique key
027             */
028            Object getSelectedNode();       
029            public void setSelectedNode(Object objUniqueKey);
030    
031            void expand(Object objUniqueKey);
032            void expandPath(Object objUniqueKey);
033            void collapse(Object objUniqueKey);
034            void collapsePath(Object objUniqueKey);
035    
036            boolean isUniqueKeyExpanded(Object objUniqueKey);
037            
038            void resetState();
039    }