001package gwt.material.design.client.base.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 com.google.gwt.regexp.shared.RegExp;
024import gwt.material.design.client.base.validator.ValidationMessages.Keys;
025
026/**
027 * Validator for checking value matches a regular expression.
028 *
029 * @author Steven Jardine
030 */
031public class RegExValidator extends AbstractValidator<String> {
032
033    private RegExp regex;
034
035    public RegExValidator(String pattern) {
036        super(Keys.REGEX, new Object[0]);
037        regex = RegExp.compile(pattern);
038    }
039
040    public RegExValidator(String pattern, String invalidMessageOverride) {
041        super(invalidMessageOverride);
042        regex = RegExp.compile(pattern);
043    }
044
045    @Override
046    public int getPriority() {
047        return Priority.MEDIUM;
048    }
049
050    @Override
051    public boolean isValid(String value) {
052        return value == null || regex.test(value);
053    }
054
055}