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1   /*
2    * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.
8    *
9    * This code is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12   * version 2 for more details (a copy is included in the LICENSE file that
13   * accompanied this code).
14   *
15   * You should have received a copy of the GNU General Public License version
16   * 2 along with this work; if not, write to the Free Software Foundation,
17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18   *
19   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20   * or visit www.oracle.com if you need additional information or have any
21   * questions.
22   *
23   */
24  
25  package sun.jvm.hotspot.ui.table;
26  
27  import java.util.Collections;
28  import java.util.List;
29  
30  import javax.swing.event.TableModelEvent;
31  import javax.swing.table.AbstractTableModel;
32  
33  /**
34   * A table model which stores its rows as a list. The elements
35   * of the list may be sortable by column. The TableModelComparator
36   * must be set for sorting to be enabled.
37   */
38  public abstract class SortableTableModel extends AbstractTableModel {
39  
40      private TableModelComparator comparator;
41  
42      /**
43       * All the rows are stored as a List.
44       */
45      protected java.util.List elements;
46  
47      /**
48       * This comparator must be set.
49       */
50      public void setComparator(TableModelComparator comparator) {
51          this.comparator = comparator;
52      }
53  
54      public void sortByColumn(int column, boolean ascending) {
55          comparator.addColumn(column);
56          comparator.setAscending(ascending);
57  
58          Collections.sort(elements, comparator);
59  
60          fireTableChanged(new TableModelEvent(this));
61      }
62  
63      public boolean isAscending() {
64          return comparator.isAscending();
65      }
66  
67      public int getColumn() {
68          return comparator.getColumn();
69      }
70  
71  }