Mercurial > dive4elements > river
comparison flys-client/src/main/java/org/dive4elements/river/client/client/utils/DoubleValidator.java @ 5834:f507086aa94b
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 |
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| 5833:a2bdc0f524e8 | 5834:f507086aa94b |
|---|---|
| 1 package de.intevation.flys.client.client.utils; | |
| 2 | |
| 3 import java.util.Map; | |
| 4 | |
| 5 import com.google.gwt.core.client.GWT; | |
| 6 import com.google.gwt.i18n.client.NumberFormat; | |
| 7 | |
| 8 import com.smartgwt.client.widgets.form.fields.FormItem; | |
| 9 | |
| 10 import de.intevation.flys.client.client.FLYSConstants; | |
| 11 | |
| 12 /** | |
| 13 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> | |
| 14 */ | |
| 15 public class DoubleValidator implements Validator { | |
| 16 | |
| 17 /** The interface that provides i18n messages. */ | |
| 18 protected FLYSConstants MSG = GWT.create(FLYSConstants.class); | |
| 19 | |
| 20 | |
| 21 /** Statically determine doubility of String value. */ | |
| 22 public static boolean isDouble(Object obj) { | |
| 23 if (obj == null) { | |
| 24 return false; | |
| 25 } | |
| 26 | |
| 27 boolean valid = true; | |
| 28 String v = obj.toString(); | |
| 29 | |
| 30 NumberFormat f = NumberFormat.getDecimalFormat(); | |
| 31 | |
| 32 try { | |
| 33 if (v == null) { | |
| 34 throw new NumberFormatException("empty"); | |
| 35 } | |
| 36 | |
| 37 double value = f.parse(v); | |
| 38 } | |
| 39 catch (NumberFormatException nfe) { | |
| 40 valid = false; | |
| 41 } | |
| 42 return valid; | |
| 43 | |
| 44 } | |
| 45 | |
| 46 | |
| 47 /** | |
| 48 * @return true if items value can be converted to double, if false, | |
| 49 * expect error message in \param errors map. | |
| 50 */ | |
| 51 public boolean validate(FormItem item, Map errors) { | |
| 52 boolean valid = true; | |
| 53 | |
| 54 if(item.getValue() == null) { | |
| 55 return false; | |
| 56 } | |
| 57 String v = item.getValue().toString(); | |
| 58 | |
| 59 NumberFormat f = NumberFormat.getDecimalFormat(); | |
| 60 | |
| 61 try { | |
| 62 if (v == null) { | |
| 63 throw new NumberFormatException("empty"); | |
| 64 } | |
| 65 | |
| 66 double value = f.parse(v); | |
| 67 | |
| 68 errors.remove(item.getFieldName()); | |
| 69 } | |
| 70 catch (NumberFormatException nfe) { | |
| 71 errors.put(item.getFieldName(), MSG.wrongFormat()); | |
| 72 | |
| 73 item.focusInItem(); | |
| 74 | |
| 75 valid = false; | |
| 76 } | |
| 77 return valid; | |
| 78 } | |
| 79 } | |
| 80 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | |
| 81 |