com.google.gwt.libideas.validation.client.validator.DateRangeValidator.java Source code

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Here is the source code for com.google.gwt.libideas.validation.client.validator.DateRangeValidator.java

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/*
 * Copyright 2006 Google 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://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 com.google.gwt.libideas.validation.client.validator;

import com.google.gwt.libideas.validation.client.ErrorHandler;
import com.google.gwt.libideas.validation.client.Subject;
import com.google.gwt.libideas.validation.client.ValidationException;

import java.util.Date;

/**
 * Validator to check the range of a date.
 */
public class DateRangeValidator extends BuiltInValidator {
    private Date max;
    private Date min;

    /**
     * Default Constructor used for serialization.
     */
    public DateRangeValidator() {
    }

    /**
     * Adds a min/max that the DataQuestion must conform to.
     * 
     * @param min the earliest valid date
     * @param max the latest valid date
     */
    public DateRangeValidator(Date min, Date max) {
        this.min = min;
        this.max = max;
    }

    /**
     * Check whether the Date is within the correct range.
     */
    public void checkValid(Subject e, ErrorHandler handler) {
        try {
            Date t = getDate(e);
            if (t != null) {
                if (min != null && t.before(min)) {
                    throw new ValidationException(getMessages().lessThan(e.getLabel(), t, min));
                } else if (max != null && t.after(max)) {
                    throw new ValidationException(getMessages().greaterThan(e.getLabel(), t, max));
                }
            }
        } catch (ValidationException validationException) {
            handler.reportError(e, validationException);
        }
    }
}