OneWireOnOffTypeInvertModifier.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.onewire.internal.deviceproperties.modifier;

import org.openhab.core.library.types.OnOffType;

/**
 * This InvertModifier inverts the given Value to the opposite for OnOffType.
 *
 * @author Dennis Riegelbauer
 * @since 1.7.0
 *
 */
public class OneWireOnOffTypeInvertModifier extends AbstractOneWireOnOffTypeModifier {

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.openhab.binding.onewire.internal.deviceproperties.modifier.InterfaceOneWireTypeModifier#getModifierName()
     */
    @Override
    public String getModifierName() {
        return "Invert OnOffType modifier for OnOffType";
    }

    @Override
    public OnOffType modifyOnOffType4Read(OnOffType pvOnOffTypeValue) {
        if (pvOnOffTypeValue == null) {
            return null;
        } else if (pvOnOffTypeValue.equals(OnOffType.ON)) {
            return OnOffType.OFF;
        } else if (pvOnOffTypeValue.equals(OnOffType.OFF)) {
            return OnOffType.ON;
        } else {
            throw new IllegalStateException("Unknown OnOffType state:" + pvOnOffTypeValue.toString());
        }
    }

    @Override
    public OnOffType modifyOnOffType4Write(OnOffType onOffTypeValue) {
        return modifyOnOffType4Read(onOffTypeValue);
    }
}