Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/client/utils/DoubleValidator.java @ 4254:33b15ac17fd1
Only create and add GaugePanel when necessary
The GaugePanel isn't created always and only show if WINFO and a river is
selected now. It is only created on demand. Therefore all access to the
GaugePanel is abstraced via methods that check if the GaugePanel is null before
accessing it's methods.
author | Björn Ricks <bjoern.ricks@intevation.de> |
---|---|
date | Thu, 25 Oct 2012 13:58:53 +0200 |
parents | 24e9b5eb83f8 |
children |
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package de.intevation.flys.client.client.utils; import java.util.Map; import com.google.gwt.core.client.GWT; import com.google.gwt.i18n.client.NumberFormat; import com.smartgwt.client.widgets.form.fields.FormItem; import de.intevation.flys.client.client.FLYSConstants; /** * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> */ public class DoubleValidator implements Validator { /** The interface that provides i18n messages. */ protected FLYSConstants MSG = GWT.create(FLYSConstants.class); /** Statically determine doubility of String value. */ public static boolean isDouble(Object obj) { if (obj == null) { return false; } boolean valid = true; String v = obj.toString(); NumberFormat f = NumberFormat.getDecimalFormat(); try { if (v == null) { throw new NumberFormatException("empty"); } double value = f.parse(v); } catch (NumberFormatException nfe) { valid = false; } return valid; } /** * @return true if items value can be converted to double, if false, * expect error message in \param errors map. */ public boolean validate(FormItem item, Map errors) { boolean valid = true; if(item.getValue() == null) { return false; } String v = item.getValue().toString(); NumberFormat f = NumberFormat.getDecimalFormat(); try { if (v == null) { throw new NumberFormatException("empty"); } double value = f.parse(v); errors.remove(item.getFieldName()); } catch (NumberFormatException nfe) { errors.put(item.getFieldName(), MSG.wrongFormat()); item.focusInItem(); valid = false; } return valid; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :