de.swm.commons.mobile.client.widgets.NumberTextBox Maven / Gradle / Ivy
/*
* Copyright 2011 SWM Services GmbH.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package de.swm.commons.mobile.client.widgets;
import com.google.gwt.text.shared.Parser;
import de.swm.commons.mobile.client.base.BoxBase;
import java.text.ParseException;
/**
* Defines a box for integer values.
*
*/
public class NumberTextBox extends BoxBase {
private static class IntegerParser implements Parser{
private static final IntegerParser INST = new IntegerParser();
@Override
public Integer parse(CharSequence text) throws ParseException {
if(text == null) {
return null;
}
String str = text.toString();
str = str.split(",")[0];
try{
return Integer.parseInt(str);
}catch(NumberFormatException e) {
return null;
}
}
public static IntegerParser instance() {
return INST;
}
}
/**
* Default constructor.
*/
public NumberTextBox() {
super("number", new ToStringRenderer(),
IntegerParser.instance());
}
public boolean validate() {
return this.getValue() != null;
}
}