AccelerometerPhidget.java

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/*
 * Copyright 2006 Phidgets Inc.  All rights reserved.
 */

package com.phidgets;
import java.util.Iterator;
import java.util.LinkedList;
import com.phidgets.event.*;
public final class AccelerometerPhidget extends Phidget
{
        public AccelerometerPhidget () throws PhidgetException
        {
                super (create ());
        }
        private static native long create () throws PhidgetException;

        public native int getAxisCount () throws PhidgetException;
        public native double getAcceleration (int index) throws PhidgetException;
        public native double getAccelerationMax (int index) throws PhidgetException;
        public native double getAccelerationMin (int index) throws PhidgetException;
        public native void setAccelerationChangeTrigger (int index, double newVal) throws PhidgetException;
        public native double getAccelerationChangeTrigger (int index) throws PhidgetException;

        private final void enableDeviceSpecificEvents (boolean b)
        {
                enableAccelerationChangeEvents (b && accelerationChangeListeners.size () > 0);
        }
        public final void addAccelerationChangeListener (AccelerationChangeListener l)
        {
                synchronized (accelerationChangeListeners)
                {
                        accelerationChangeListeners.add (l);
                        enableAccelerationChangeEvents (true);
        }} private LinkedList accelerationChangeListeners = new LinkedList ();
        private long nativeAccelerationChangeHandler = 0;
        public final void removeAccelerationChangeListener (AccelerationChangeListener l)
        {
                synchronized (accelerationChangeListeners)
                {
                        accelerationChangeListeners.remove (l);
                        enableAccelerationChangeEvents (accelerationChangeListeners.size () > 0);
        }} private void fireAccelerationChange (AccelerationChangeEvent e)
        {
                synchronized (accelerationChangeListeners)
                {
                        for (Iterator it = accelerationChangeListeners.iterator (); it.hasNext ();)
                                ((AccelerationChangeListener) it.next ()).accelerationChanged (e);
                }
        }
        private native void enableAccelerationChangeEvents (boolean b);
}