svn-gvsig-desktop / trunk / build / distribution / IzPack / sample / src / IPValidator.java @ 21757
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1 | 21757 | jcampos | /*
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2 | * $Id: IPValidator.java 5819 2006-06-14 07:29:09Z cesar $
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3 | * Copyright (C) 2003 Elmar Grom
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4 | *
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5 | * File : IPValidator.java
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6 | * Description : Sample implementation of a rule validator
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7 | * Author's email : elmar@grom.net
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8 | * Author's Website : http://www.izforge.com
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9 | *
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10 | * This program is free software; you can redistribute it and/or
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11 | * modify it under the terms of the GNU General Public License
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12 | * as published by the Free Software Foundation; either version 2
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13 | * of the License, or any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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23 | */
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24 | |||
25 | package com.izforge.izpack.sample; |
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26 | |||
27 | import com.izforge.izpack.panels.*; |
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28 | |||
29 | /*---------------------------------------------------------------------------*/
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30 | /**
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31 | * This class represents a simple validator for IP addresses to demonstrate
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32 | * the implementation of a rule validator that cooperates with the
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33 | * <code>RuleInputField</code> used in the <code>UserInputPanel</code>
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34 | *
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35 | * @version 0.0.1 / 02/19/03
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36 | * @author Elmar Grom
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37 | */
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38 | /*---------------------------------------------------------------------------*/
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39 | public class IPValidator implements Validator |
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40 | { |
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41 | /*--------------------------------------------------------------------------*/
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42 | /**
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43 | * Validates the contend of a <code>RuleInputField</code>. The test is
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44 | * intended for a rule input field composed of four sub-fields. The
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45 | * combination of their individual content is assumed to represent an IP
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46 | * address.
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47 | *
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48 | * @param client the client object using the services of this validator.
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49 | *
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50 | * @return <code>true</code> if the validation passes, otherwise <code>false</code>.
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51 | */
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52 | /*--------------------------------------------------------------------------*/
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53 | public boolean validate (ProcessingClient client) |
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54 | { |
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55 | // ----------------------------------------------------
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56 | // verify that there are actually four sub-fields. A
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57 | // different number would indicate that we are not
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58 | // connected with the RuleInputField that we expect
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59 | // ----------------------------------------------------
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60 | if (client.getNumFields () != 4) |
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61 | { |
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62 | return (false); |
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63 | } |
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64 | |||
65 | // ----------------------------------------------------
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66 | // test each field to make sure it actually contains
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67 | // an integer and the value of the integer is beween
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68 | // 0 and 255.
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69 | // ----------------------------------------------------
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70 | boolean isIP = true; |
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71 | |||
72 | for (int i = 0; i < 4; i++) |
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73 | { |
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74 | int value;
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75 | |||
76 | try
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77 | { |
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78 | value = Integer.parseInt (client.getFieldContents (i));
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79 | if ((value < 0) || (value > 255)) |
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80 | { |
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81 | isIP = false;
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82 | } |
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83 | } |
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84 | catch (Throwable exception) |
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85 | { |
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86 | isIP = false;
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87 | } |
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88 | } |
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89 | |||
90 | return (isIP);
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91 | } |
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92 | } |
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93 | /*---------------------------------------------------------------------------*/ |