com.codename1.ui.validation.RegexConstraint Maven / Gradle / Ivy
/*
* Copyright (c) 2012, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.ui.validation;
import com.codename1.util.regex.RE;
/**
* Creates a validation constraint based on a regular expression
*
* @author Shai Almog
*/
public class RegexConstraint implements Constraint {
private static final String validEmailRegex = "^([a-zA-Z0-9.!#$%&'*+/=?^`{|}~]|-|_)+@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\])|(([a-zA-Z\\-0-9]+\\.)+[a-zA-Z]{2,}))$";
private static final String validURLRegex = "^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
private RE regex;
private String errorMessage;
/**
* Creates a new regex constraint
* @param regex the regular expression
* @param errorMessage the default error message if the constraint fails
*/
public RegexConstraint(String regex, String errorMessage) {
this.regex = new RE(regex);
this.errorMessage = errorMessage;
}
/**
* Generates a valid email constraint by using a regular expression
* @param errorMessage error message for the constraint
* @return a constraint that will fail if the input isn't a valid email
*/
public static Constraint validEmail(String errorMessage) {
return new RegexConstraint(validEmailRegex, errorMessage);
}
/**
* Generates a valid email constraint by using a regular expression
* @return a constraint that will fail if the input isn't a valid email
*/
public static Constraint validEmail() {
return new RegexConstraint(validEmailRegex, "Invalid Email Address");
}
/**
* Generates a valid URL constraint by using a regular expression
* @param errorMessage error message for the constraint
* @return a constraint that will fail if the input isn't a valid email
*/
public static Constraint validURL(String errorMessage) {
return new RegexConstraint(validURLRegex, errorMessage);
}
/**
* Generates a valid URL constraint by using a regular expression
* @return a constraint that will fail if the input isn't a valid email
*/
public static Constraint validURL() {
return new RegexConstraint(validURLRegex, "Invalid URL");
}
/**
* {@inheritDoc}
*/
@Override
public boolean isValid(Object value) {
return value != null && regex.match(value.toString());
}
/**
* {@inheritDoc}
*/
@Override
public String getDefaultFailMessage() {
return errorMessage;
}
}