com.codename1.ui.validation.NotConstraint 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;
/**
* Negates a group of constraints, such that, if any of its child constraints is true, it returns false.
*
* @author Diamond Mubaarak
* @since 7.0
*/
public class NotConstraint implements Constraint {
private final Constraint[] constraints;
private String failMessage = null;
/**
* Creates a new NotConstraint
*
* @param children the child constraints
*/
public NotConstraint(Constraint... children) {
this.constraints = children;
}
/**
* Creates a new NotConstraint
*
* @param failMessage the default error message if the constraint fails
* @param children the child constraints
*/
public NotConstraint(String failMessage, Constraint... children) {
this.failMessage = failMessage;
this.constraints = children;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isValid(Object value) {
for (Constraint c : constraints) {
if (c.isValid(value)) return false;
}
return true;
}
/**
* {@inheritDoc}
*/
@Override
public String getDefaultFailMessage() {
if (failMessage == null) {
return "Input value is invalid";
}
return failMessage;
}
}