Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/utils/DoubleValidator.java @ 2929:0ef4753e5515

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Improved manual wsp input validation. flys-client/trunk@4830 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 28 Jun 2012 15:44:10 +0000
parents 4f4d29404dba
children a30d77d86386
rev   line source
1504
02a9104c0451 Implemented the validators more object oriented.
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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1 package de.intevation.flys.client.client.utils;
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2
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3 import java.util.Map;
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5 import com.google.gwt.core.client.GWT;
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6 import com.google.gwt.i18n.client.NumberFormat;
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7
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8 import com.smartgwt.client.widgets.form.fields.FormItem;
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9
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10 import de.intevation.flys.client.client.FLYSConstants;
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11
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12 /**
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13 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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14 */
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15 public class DoubleValidator implements Validator {
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16
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17 /** The interface that provides i18n messages. */
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18 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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19
2929
0ef4753e5515 Improved manual wsp input validation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1536
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20
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21 /** Statically determine doubility of String value. */
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22 public static boolean isDouble(Object obj) {
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23 if (obj == null) {
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24 return false;
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25 }
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26
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27 boolean valid = true;
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28 String v = obj.toString();
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29
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30 NumberFormat f = NumberFormat.getDecimalFormat();
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31
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32 try {
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33 if (v == null) {
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34 throw new NumberFormatException("empty");
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35 }
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36
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37 double value = f.parse(v);
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38 }
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39 catch (NumberFormatException nfe) {
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40 valid = false;
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41 }
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42 return valid;
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43
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44 }
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45
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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46 /**
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Raimund Renkert <raimund.renkert@intevation.de>
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47 *
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48 */
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49 public boolean validate(FormItem item, Map errors) {
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50 boolean valid = true;
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51
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4f4d29404dba Filter the helper input tables using the range filter.
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52 if(item.getValue() == null) {
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53 return false;
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54 }
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55 String v = item.getValue().toString();
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56
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57 NumberFormat f = NumberFormat.getDecimalFormat();
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58
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59 try {
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60 if (v == null) {
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61 throw new NumberFormatException("empty");
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62 }
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63
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64 double value = f.parse(v);
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65
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66 errors.remove(item.getFieldName());
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67 }
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68 catch (NumberFormatException nfe) {
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69 errors.put(item.getFieldName(), MSG.wrongFormat());
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70
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71 item.focusInItem();
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72
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73 valid = false;
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74 }
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75 return valid;
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76 }
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77 }
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78
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