odk/examples/DevelopersGuide/Forms/TextValidator.java

   1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 public class TextValidator extends ControlValidator
  22 {
  23
  24     /** Creates a new instance of NumericValidator */
  25     public TextValidator( )
  26     {
  27     }
  28
  29     public String explainInvalid( Object Value )
  30     {
  31         try
  32         {
  33             String value = (String)Value;
  34             if ( containsZs( value ) )
  35                 return "No Z's allowed here";
  36             if ( !isProperChunks( value ) )
  37                 return "Need 3 * n characters";
  38         }
  39         catch( java.lang.Exception e )
  40         {
  41             return "ooops. Unknown error";
  42         }
  43         return "";
  44     }
  45
  46     public boolean isValid( Object Value )
  47     {
  48         try
  49         {
  50             String value = (String)Value;
  51             if ( containsZs( value ) )
  52                 return false;
  53             if ( !isProperChunks( value ) )
  54                 return false;
  55             return true;
  56         }
  57         catch( java.lang.Exception e )
  58         {
  59         }
  60         return false;
  61     }
  62
  63     private boolean isProperChunks( String value )
  64     {
  65         return ( value.length() % 3 ) == 0;
  66     }
  67
  68     private boolean containsZs( String value )
  69     {
  70         if  (  ( value.indexOf( 'Z' ) != -1 )
  71             || ( value.indexOf( 'z' ) != -1 )
  72             )
  73             return true;
  74         return false;
  75     }
  76 }
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */