odk/examples/DevelopersGuide/Forms/BooleanValidator.java

   1 /*************************************************************************
   2  *
   3  *  $RCSfile: BooleanValidator.java,v $
   4  *
   5  *  $Revision: 1.3 $
   6  *
   7  *  last change: $Author: vg $ $Date: 2006-03-15 09:26:56 $
   8  *
   9  *  The Contents of this file are made available subject to the terms of
  10  *  the BSD license.
  11  *
  12  *  Copyright (c) 2003 by Sun Microsystems, Inc.
  13  *  All rights reserved.
  14  *
  15  *  Redistribution and use in source and binary forms, with or without
  16  *  modification, are permitted provided that the following conditions
  17  *  are met:
  18  *  1. Redistributions of source code must retain the above copyright
  19  *     notice, this list of conditions and the following disclaimer.
  20  *  2. Redistributions in binary form must reproduce the above copyright
  21  *     notice, this list of conditions and the following disclaimer in the
  22  *     documentation and/or other materials provided with the distribution.
  23  *  3. Neither the name of Sun Microsystems, Inc. nor the names of its
  24  *     contributors may be used to endorse or promote products derived
  25  *     from this software without specific prior written permission.
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  27  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  30  *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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  37  *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38  *
  39  *************************************************************************/
  40
  41 /**
  42  *
  43  * @author  fs93730
  44  */
  45 public class BooleanValidator extends ControlValidator
  46 {
  47     private boolean                         m_preventChecked;
  48     private com.sun.star.uno.AnyConverter   m_converter;
  49
  50     /** Creates a new instance of BooleanValidator */
  51     public BooleanValidator( boolean preventChecked )
  52     {
  53         m_preventChecked = preventChecked;
  54         m_converter = new com.sun.star.uno.AnyConverter();
  55     }
  56
  57     public String explainInvalid( Object Value )
  58     {
  59         try
  60         {
  61             if ( m_converter.isVoid( Value ) )
  62                 return "'indetermined' is not an allowed state";
  63             boolean value = ((Boolean)Value).booleanValue();
  64             if ( m_preventChecked && ( value == true ) )
  65                 return "no no no. Don't check it.";
  66         }
  67         catch( java.lang.Exception e )
  68         {
  69             return "ooops. Unknown error";
  70         }
  71         return "";
  72     }
  73
  74     public boolean isValid( Object Value )
  75     {
  76         try
  77         {
  78             if ( m_converter.isVoid( Value ) )
  79                 return false;
  80
  81             boolean value = ((Boolean)Value).booleanValue();
  82             if ( m_preventChecked && ( value == true ) )
  83                 return false;
  84             return true;
  85         }
  86         catch( java.lang.Exception e )
  87         {
  88         }
  89         return false;
  90     }
  91 }