var documentHasFocus = false;
var theJoystick = null;
var theJoystickObjectCreation = "createDefaultJoystickObject()";
var theJoystickActionSetup = "setupDefaultJoystickAction(theJoystick)";

function JoystickInstance(joystickControl,joystickAction,commandAction)
{
	this.control = joystickControl;
	this.action = joystickAction;
	this.command = commandAction;

	pollInProgress = false;

	return (this);
}

function resetJoystickAction(joystick,feedNumber) {
	var buttons = new Array();
	for (i = 0; i < 16; ++ i) {
		buttons[i] = 0;
	}

	joystick.command.setTarget(feedNumber,false);
	joystick.action.testAndDoAction(0,0,0,buttons);
}

function refreshJoystickAction(joystick,feedNumber) {
	var buttons = new Array();
	for (i = 0; i < 16; ++ i) {
		buttons[i] = joystick.control.getB(1 + i) ? 1 : 0;
	}

	joystick.command.setTarget(feedNumber,false);
	joystick.action.testAndDoAction(joystick.control.getX(),joystick.control.getY(),joystick.control.getZ(),buttons);
}

function runJoystick(joystick) {
	if (joystick.control.acquireDevice(1)) {
		joystick.control.setPollInterval(1);
		joystick.control.setXRange(-10010, 10010);
		joystick.control.setYRange(-10010, 10010);
		joystick.control.setZRange(-10010, 10010);
		joystick.control.setXYZScale(1,1,-1);
		joystick.control.poll();
		joystick.control.setXYZCalibration();
		joystick.control.setXYZPedestal(500,500,1000);
		joystick.control.setPollInterval(0);
	}

	pollJoystick(joystick);
}

function createDefaultJoystickObject() {
	return(createIVCDIJoystick());
}

function setupDefaultJoystickAction(joystick) {
	joystick.command = new RelayServerCommandActionClass();

	joystick.action.setXYZRepetitionAllowance(3,3);
	joystick.action.setXYZStepQuantum(100,100);
	joystick.action.enableXYZDirectionalFilter(false,false);
	/* X/Y axises controls the pan/tilt */
	joystick.action.setXYAction("theJoystick.command.startPanTilt()","theJoystick.command.stopPanTilt()");
	/* Z axis controls the zoom */
	joystick.action.setZAction("theJoystick.command.startZoom()","theJoystick.command.stopZoom()");

	/* Button #11 is focus far, #12 is focus near.  When these two buttons are off, then focus stop. When these two buttons are on, then auto-focus. */
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,1,0,-1,-1,-1,-1),"theJoystick.command.startFocusFar(10000)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,1,-1,-1,-1,-1),"theJoystick.command.startFocusNear(10000)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,-1,-1,-1,-1),"theJoystick.command.stopFocus()");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,1,1,-1,-1,-1,-1),"theJoystick.command.autoFocus()");

	/* Button #1 to #10 are goto preset #1 to #10. */
	joystick.action.addButtonAction(new Array(1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(1)");
	joystick.action.addButtonAction(new Array(-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(2)");
	joystick.action.addButtonAction(new Array(-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(3)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(4)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(5)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(6)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(7)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(8)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(9)");
	joystick.action.addButtonAction(new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,1,-1,-1,-1,-1,-1,-1),"theJoystick.command.gotoPreset(10)");
}

function pollJoystick(joystick) {
	joystick.pollInProgress = true;
	if (documentHasFocus) {
		refreshJoystickAction(joystick,feedId);
		time=setTimeout("pollJoystick(theJoystick)", 333);
	}
	joystick.pollInProgress = false;
}

function initializeTheJoystick() {

	var joystickControl;
	if(null == theJoystickObjectCreation) {
		joystickControl = createDefaultJoystickObject();
	} else {
		joystickControl = eval(theJoystickObjectCreation);
	}

	if (null != joystickControl) {
		theJoystick = JoystickInstance(joystickControl,new JoystickActionClass(),null);

		if (null == theJoystickActionSetup) {
			setupDefaultJoystickAction(theJoystick);
		} else {
			eval(theJoystickActionSetup);
		}
	}
}