| // Copyright 2011 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.tree; |
| |
| import java.util.List; |
| |
| import javax.swing.tree.TreeSelectionModel; |
| |
| import org.apache.tapestry5.ValueEncoder; |
| import org.apache.tapestry5.corelib.components.Tree; |
| |
| /** |
| * A model for tree-oriented data used by the {@link Tree} component. The default implemention, {@link DefaultTreeModel} |
| * uses a {@link ValueEncoder} and a {@link TreeModelAdapter} to supply the |
| * underlying information. |
| * |
| * @param <T> |
| * type of data in the tree |
| * @since 5.3 |
| * @see TreeSelectionModel |
| */ |
| public interface TreeModel<T> |
| { |
| /** |
| * Returns the node or nodes that are the top level of the tree. |
| */ |
| List<TreeNode<T>> getRootNodes(); |
| |
| /** |
| * Locates a node in the tree by its unique id. |
| * |
| * @throws IllegalArgumentException |
| * if no such node exists |
| * @see TreeNode#getId() |
| */ |
| TreeNode<T> getById(String id); |
| |
| /** |
| * Recursively searches from the root nodes to find the tree node that matches |
| * the provided element. |
| * |
| * @param element |
| * to search for |
| * @return matching node, or null if not found |
| */ |
| TreeNode<T> find(T element); |
| } |