Mercurial > dive4elements > river

annotate flys-client/src/main/java/org/dive4elements/river/client/client/utils/DoubleValidator.java @ 5834:f507086aa94b

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Repaired internal references.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:31:32 +0200
parents flys-client/src/main/java/de/intevation/flys/client/client/utils/DoubleValidator.java@24e9b5eb83f8
children 821a02bbfb4e
rev   line source
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02a9104c0451 Implemented the validators more object oriented.
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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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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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46
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47 /**
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48 * @return true if items value can be converted to double, if false,
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49 * expect error message in \param errors map.
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50 */
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51 public boolean validate(FormItem item, Map errors) {
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52 boolean valid = true;
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53
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54 if(item.getValue() == null) {
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55 return false;
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56 }
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57 String v = item.getValue().toString();
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58
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59 NumberFormat f = NumberFormat.getDecimalFormat();
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60
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61 try {
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62 if (v == null) {
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63 throw new NumberFormatException("empty");
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64 }
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65
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66 double value = f.parse(v);
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67
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68 errors.remove(item.getFieldName());
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69 }
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70 catch (NumberFormatException nfe) {
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71 errors.put(item.getFieldName(), MSG.wrongFormat());
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72
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73 item.focusInItem();
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74
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75 valid = false;
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76 }
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77 return valid;
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78 }
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79 }
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80 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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81
http://dive4elements.wald.intevation.org