ecmascript:

function initialize ()
{
	enabled = ClockNode.enabled;
	tracePrint ('initialize() enabled=' + enabled);
	if (enabled)
	{
		isActive = true;
		// isLoaded event only sent upon completion
		progress = 0.0;
		tracePrintEvents ();
		timeOut = ClockNode.cycleInterval;
		tracePrint ('timeOut=' + timeOut);
		if (timeOut <= 0.0) // instantaneous, no loop
		{
			isActive = false;
			isLoaded = true;
			progress = 1.0;
			loadTime = timestamp;
			tracePrintEvents ();
		}
	}
}
function fraction (value, timestamp)
{
	enabled = ClockNode.enabled;
	if (enabled)
		tracePrint ('progress=' + value + ', priorFraction=' + priorFraction);
	// use priorFraction to check for looping, then stop loop
	if (enabled && ((value >=1) || (value < priorFraction)))
	{
		isActive = false;
		isLoaded = true;
		loadTime = timestamp;
		progress = 1;
		tracePrintEvents ();
		tracePrint ('complete');
                loopStart = true;
	}
	else progress= value; // output event
	priorFraction = progress;
}
function set_watchList (value, timestamp)
{
	watchList = value;
}
function tracePrintEvents ()
{
	tracePrint ('isActive=' + isActive);
	tracePrint ('isLoaded=' + isLoaded);
	tracePrint ('loadTime=' + loadTime);
	tracePrint ('progress=' + progress);
}
function tracePrint (outputString)
{
	if (traceEnabled) Browser.println ('[LoadSensor]' + outputString);
}
function alwaysPrint (outputString)
{
	Browser.println ('[LoadSensor]' + outputString);
}