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11  *   http://www.apache.org/licenses/LICENSE-2.0
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20  *************************************************************/
21 
22 
23 
24 package convwatch;
25 
26 public class TriState
27 {
28     public static final TriState TRUE = new TriState(1);
29     public static final TriState FALSE = new TriState(0);
30     public static final TriState UNSET = new TriState(-1);
31 
32     int m_nValue;
33 
34     /**
35        Allocates a <code>TriState</code> object representing the
36        <code>value</code> argument.
37 
38        @param   value   the value of the <code>TriState</code>.
39     */
TriState(int value)40     public TriState(int value)
41         {
42             m_nValue = value;
43         }
44 
45     /**
46        Returns the value of this TriState object as an int
47      * @return the primitive <code>int</code> value of this object.
48     */
intValue()49     public int intValue()
50         {
51             return m_nValue;
52         }
53     /**
54        Returns <code>true</code> if and only if the argument is not
55        <code>null</code> and is a <code>TriState</code> object that
56        contains the same <code>int</code> value as this object.
57 
58        @param   obj   the object to compare with.
59        @return  <code>true</code> if the objects are the same;
60                 <code>false</code> otherwise.
61     */
62 
equals(Object obj)63     public boolean equals(Object obj)
64         {
65             if ((obj != null) &&
66                 (obj instanceof TriState))
67             {
68                 return m_nValue == ((TriState)obj).intValue();
69             }
70             return false;
71         }
72 }
73