content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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 org.apache.causeway.viewer.wicket.ui.pages.accmngt.password_reset;
  
  import java.util.regex.Pattern;
  
  import org.apache.wicket.validation.validator.PatternValidator;
  
  /**
   * Copy of {@link org.apache.wicket.validation.validator.EmailAddressValidator}, generalized a little.
   */
  public class EmailAddressValidator extends PatternValidator {
      private static final long serialVersionUID = 1L;
      private static final EmailAddressValidator INSTANCE = new EmailAddressValidator();
  
      public static EmailAddressValidator getInstance() {
          return INSTANCE;
      }
  
      protected EmailAddressValidator() {
          super(
          "^[_A-Za-z0-9-]" +
                 "[_A-Za-z0-9-+]+" +
                  "(\\.[_A-Za-z0-9-]+)*" +
                  "@[A-Za-z0-9-]+" +
                  "(\\.[A-Za-z0-9-]+)*" +
                  "(" +
                    "(\\.[A-Za-z]{2,}){1}" +
                  "$)", Pattern.CASE_INSENSITIVE);
      }
  }
  