UserTaskObjectList


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Code is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.tasklist.usertasks.model;
21  
22  import java.util.Iterator  ;
23  import org.netbeans.modules.tasklist.core.util.ObjectList;
24  import org.netbeans.modules.tasklist.usertasks.*;
25  
26  /**
27   * List of UserTasks
28   *
29   * @author tl
30   */
31  public class UserTaskObjectList extends ObjectList<UserTask> {
32      private Object   parent;
33  
34      /**
35       * Creates a new instance of UserTaskObjectList
36       *
37       * @param parent parent for all tasks in this collection. UserTask or
38       * UserTaskList
39       */
40      public UserTaskObjectList(Object   parent) {
41          assert parent instanceof UserTask || parent instanceof UserTaskList;
42          this.parent = parent;
43      }
44      
45      /**
46       * Returns the user task with the specified index
47       *
48       * @param index index of the task
49       * @see #get(int)
50       */
51      public UserTask getUserTask(int index) {
52          return (UserTask) get(index);
53      }
54      
55      public void add(int index, UserTask element) {
56          UserTask ut = (UserTask) element;
57          if (ut.getParent() != null)
58              ut.getParent().getSubtasks().remove(ut);
59          else if (ut.getList() != null)
60              ut.getList().getSubtasks().remove(ut);
61          if (parent instanceof UserTask) {
62              ut.setParent((UserTask) parent);
63              ut.setList(((UserTask) parent).getList());
64          } else {
65              ut.setParent(null);
66              ut.setList((UserTaskList) parent);
67          }
68          super.add(index, element);
69      }
70      
71      public UserTask remove(int index) {
72          UserTask element = super.remove(index);
73          ((UserTask) element).setParent(null);
74          ((UserTask) element).setList(null);
75          return element;
76      }    
77      
78      /**
79       * Removes completed tasks (recursively).
80       */
81      public void purgeCompletedItems() {
82          if (size() == 0)
83              return;
84  
85          Iterator   it = iterator();
86          while (it.hasNext()) {
87              UserTask task = (UserTask) it.next();
88              if (task.isDone())
89                  it.remove();
90              else
91                  task.getSubtasks().purgeCompletedItems();
92          }
93      }
94  }
95
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