de.symeda.sormas.ui.utils.DateComparisonValidator.java Source code

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Here is the source code for de.symeda.sormas.ui.utils.DateComparisonValidator.java

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/*******************************************************************************
 * SORMAS - Surveillance Outbreak Response Management & Analysis System
 * Copyright  2016-2018 Helmholtz-Zentrum fr Infektionsforschung GmbH (HZI)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *******************************************************************************/
package de.symeda.sormas.ui.utils;

import java.util.Date;
import java.util.function.Supplier;

import org.joda.time.DateTimeComparator;

import com.vaadin.v7.data.validator.AbstractValidator;
import com.vaadin.v7.ui.Field;

/**
 * Compares the value of a date field to a supplied reference date.
 * Returns an error if earlierOrSame is true and the value is later as the reference date or vice versa.
 */
@SuppressWarnings("serial")
public class DateComparisonValidator extends AbstractValidator<Date> {

    private Field<Date> dateField;
    private Supplier<Date> referenceDateSupplier;
    private boolean earlierOrSame;
    private boolean changeInvalidCommitted;

    public DateComparisonValidator(Field<Date> dateField, Supplier<Date> referenceDateSupplier,
            boolean earlierOrSame, boolean changeInvalidCommitted, String errorMessage) {
        super(errorMessage);
        this.dateField = dateField;
        this.referenceDateSupplier = referenceDateSupplier;
        this.earlierOrSame = earlierOrSame;
        this.changeInvalidCommitted = changeInvalidCommitted;
    }

    public DateComparisonValidator(Field<Date> dateField, Field<Date> referenceField, boolean earlierOrSame,
            boolean changeInvalidCommitted, String errorMessage) {
        this(dateField, () -> referenceField.getValue(), earlierOrSame, changeInvalidCommitted, errorMessage);
    }

    public DateComparisonValidator(Field<Date> dateField, Date referenceDate, boolean earlierOrSame,
            boolean changeInvalidCommitted, String errorMessage) {
        this(dateField, () -> referenceDate, earlierOrSame, changeInvalidCommitted, errorMessage);
    }

    @Override
    protected boolean isValidValue(Date date) {
        Date referenceDate = referenceDateSupplier.get();

        if (date == null || referenceDate == null) {
            return true;
        }

        if (earlierOrSame) {
            if (DateTimeComparator.getDateOnlyInstance().compare(date, referenceDate) <= 0) {
                if (changeInvalidCommitted) {
                    dateField.setInvalidCommitted(true);
                }
                return true;
            } else {
                if (changeInvalidCommitted) {
                    dateField.setInvalidCommitted(false);
                }
                return false;
            }
        } else {
            if (DateTimeComparator.getDateOnlyInstance().compare(date, referenceDate) >= 0) {
                if (changeInvalidCommitted) {
                    dateField.setInvalidCommitted(true);
                }
                return true;
            } else {
                if (changeInvalidCommitted) {
                    dateField.setInvalidCommitted(false);
                }
                return false;
            }
        }
    }

    @Override
    public Class<Date> getType() {
        return Date.class;
    }

}