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