RangeValidator.java

/*
 * Copyright 2013 Amazon Technologies, Inc.
 *
 * Licensed 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://aws.amazon.com/apache2.0
 *
 * This file 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 com.amazonaws.eclipse.databinding;

import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;

/**
 * Simple IValidator implementation that returns an OK status if the Long being
 * validated is within the range, otherwise it returns a validation status with
 * the message specified in the constructor.
 */
public class RangeValidator implements IValidator {
    public String message;
    public long minValue;
    public long maxValue;

    public RangeValidator(String message, long minValue, long maxValue) {
        this.message = message;
        this.minValue = minValue;
        this.maxValue = maxValue;
    }

    public IStatus validate(Object value) {
        Long s = (Long) value;
        if (s == null || s < minValue || s > maxValue)
            return ValidationStatus.error(message);
        return ValidationStatus.ok();
    }
}