001package org.gwtbootstrap3.client.ui.form.validator; 002 003/* 004 * #%L 005 * GwtBootstrap3 006 * %% 007 * Copyright (C) 2015 GwtBootstrap3 008 * %% 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 * #L% 021 */ 022 023import org.gwtbootstrap3.client.ui.form.validator.ValidationMessages.Keys; 024 025import com.google.gwt.regexp.shared.RegExp; 026 027/** 028 * Validator for checking value matches a regular expression. 029 * 030 * @param <T> the generic type 031 * @author Steven Jardine 032 */ 033public class RegExValidator extends AbstractValidator<String> { 034 035 private RegExp regex; 036 037 public RegExValidator(String pattern) { 038 super(Keys.REGEX, new Object[0]); 039 regex = RegExp.compile(pattern); 040 } 041 042 public RegExValidator(String pattern, String invalidMessageOverride) { 043 super(invalidMessageOverride); 044 regex = RegExp.compile(pattern); 045 } 046 047 /** {@inheritDoc} */ 048 @Override 049 public int getPriority() { 050 return Priority.MEDIUM; 051 } 052 053 /** {@inheritDoc} */ 054 @Override 055 public boolean isValid(String value) { 056 return value == null || regex.test(value); 057 } 058 059}