DeleteNodeModel


1   /*
2    * ====================================================================
3    * This software is subject to the terms of the Common Public License
4    * Agreement, available at the following URL:
5    *   http://www.opensource.org/licenses/cpl.html .
6    * Copyright (C) 2003-2004 TONBELLER AG.
7    * All Rights Reserved.
8    * You must accept the terms of that agreement to use this software.
9    * ====================================================================
10   *
11   * 
12   */
13  package com.tonbeller.wcf.tree;
14  
15  import java.util.Set  ;
16  
17  /**
18   * allows the user to delete nodes from the tree model
19   * 
20   * @author av
21   */
22  public interface DeleteNodeModel {
23    /**
24     * if true, the node will be rendered with a delete button
25     */
26    boolean isDeletable(Object   node);
27  
28    /**
29     * called when the user presses the delete button.
30     * @param node
31     */
32    void delete(Object   node);
33    
34    /**
35     * the tree does not paint nodes that are contained in this set.
36     * This allows the application to collect the deleted nodes
37     * in this set and perform the actual deletion when the user
38     * presses the "commit" button.
39     * 
40     * @return Set containing nodes not to be painted
41     */
42    Set   getDeleted();
43  }
44

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