ZWaveIndicatorCommandClassChangeEvent.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.zwave.internal.protocol.event;

import java.util.ArrayList;

import org.openhab.binding.zwave.internal.protocol.commandclass.ZWaveCommandClass.CommandClass;

/**
 * ZWave Command Class event. This event is fired when a command class
 * receives a value from the node. The event can be subclasses to add
 * additional information to the event.
 *
 * @author Jan-Willem Spuij
 * @since 1.4.0
 */
public class ZWaveIndicatorCommandClassChangeEvent extends ZWaveCommandClassValueEvent {
    private int currentIndicator;

    /**
     * Constructor. Creates a new instance of the ZWaveCommandClassValueEvent class.
     *
     * @param nodeId the nodeId of the event
     * @param endpoint the endpoint of the event.
     * @param commandClass the command class that fired the ZWaveCommandClassValueEvent;
     * @param the new indicator value for the event.
     * @param the value currently held by indicator for the event.
     */
    public ZWaveIndicatorCommandClassChangeEvent(int nodeId, int endpoint, CommandClass commandClass, int newValue,
            int oldValue) {
        super(nodeId, endpoint, commandClass, newValue);
        this.currentIndicator = oldValue;
    }

    /**
     * Gets the value for the event.
     *
     * @return the value.
     */
    public int getOldValue() {
        return currentIndicator;
    }

    public ArrayList<Integer> changes() {
        ArrayList<Integer> changesList = new ArrayList<Integer>();

        int newIndicator = ((Integer) this.getValue()).intValue();

        int changes = currentIndicator ^ newIndicator;

        for (int i = 0; i < 8; i++) {
            if ((changes & 0x01) == 0x01) {
                changesList.add(i);
            }
            changes = changes >> 1;
        }
        return changesList;
    }

    public boolean isBitOn(int n) {
        byte newIndicator = ((Integer) this.getValue()).byteValue();
        if (((newIndicator >> (n - 1)) & 0x01) == 1) {
            return true;
        }
        return false;
    }
}