class com.oop.ScrollingMenuFrame extends MovieClip 
{
	private var hotSpot_mc:MovieClip;			// used to detect mouse events
	private var holder_mc:MovieClip;			// holder for the flat-list SelectionSystem
	private var hotSpotMask:MovieClip;			// bluh .. also used i guess
	
	private var initY:Number;
	private var initX:Number;
	
	private var initHolderX:Number;
	private var initHolderY:Number;

	var intRate:Number = 10;					//	scroller speed


	public function ScrollingMenuFrame() {
		doInit();
	}


/*	public function doLoad(_dataArray:Array):Void {		
		holder_mc.attachMovie("KeywordSelectionSystem", "keywordTiles", 1000);
		holder_mc["keywordTiles"].doInit(_dataArray, "KeywordButton");
	}
*/	
	public function enableMenu():Void {
		initMenuScroll();
		initMouseWatch();
		setHotSpot(true);		
	}
	
	
	public function disableMenu():Void 	{
		killMouseWatch();
		killMenuScroll();
		setHotSpot(false);		
	}
	

	private function doInit():Void 	{

		initY =   _x;
		initX =   _y;

		initHolderX = holder_mc._x;
    	initHolderY = holder_mc._y;		
		
		initMenuScroll();
		
		holder_mc.onMouseDown = function() {
			if (this.hitTest(_root._xmouse, _root._ymouse, true)) 	{
//				_parent.disableMenu();
			}		
		}
	}

	
	private function setHotSpot(_isMenuEnabled:Boolean):Void {
		if (_isMenuEnabled) {
			hotSpot_mc.onRollOver = undefined;
		} 	else {
		 	hotSpot_mc.onRollOver = function() {
				this._parent.enableMenu();
			}
		}
	}
	
	
		
	private function initMouseWatch():Void 	{
		this.onMouseMove = function() 	{
 			if (!this.hitTest(_root._xmouse, _root._ymouse, true)) {
 				disableMenu();
 			}							  
		}
	}
	

	private function killMouseWatch():Void 	{
 		this.onMouseMove = undefined;
	}
	
	
	private function initMenuScroll():Void 	{
		this.onEnterFrame = function() {
			if ((holder_mc._height >= hotSpotMask._height) || (holder_mc._width >= hotSpotMask._width)) {
				doMenuScroll();
			}
		}
	}
	
	
	private function killMenuScroll():Void 	{
 		this.onEnterFrame = undefined;
	}
	
	
	private function doMenuScroll():Void {
		var intTop:Number	= initHolderY;
		var intLeft:Number = initHolderX;
		var intBottom:Number = intTop + hotSpotMask._height;
		var intRight:Number = intLeft + hotSpotMask._width;
		
		
		var intZero:Number = (intBottom + intTop) / 2;
		var intZeroW:Number = (intRight + intLeft) / 2;
		
		var intMousePos:Number = _ymouse - intZero;
		var intMousePosW:Number	=	_xmouse - intZeroW;
		
		var intMaxUp:Number = intTop - intZero;
		var intMaxLeft:Number = intLeft - intZeroW;
		var intMaxDown:Number = intBottom - intZero;
		var intMaxRight:Number = intRight - intZeroW;
				
		var _isHit:Boolean = this.hitTest(_root._xmouse, _root._ymouse, true);
		
		if (_isHit) 	{
			
 			if (holder_mc._height > hotSpotMask._height )  	{
		
				// top & bottom bounds check
	
				if (intMousePos > 0) 	{		// below intZero? scroll up
					holder_mc._y =  Math.max(holder_mc._y - intRate * Math.pow((intMousePos/intMaxDown),2), intBottom - holder_mc._height) ;
				}
				else if (intMousePos < 0) 	{	// above intZero? scroll down
					holder_mc._y =  Math.min(holder_mc._y + intRate * Math.pow((intMousePos/intMaxUp),2), intTop );
				}


				// left & right bounds check

/*				if (intMousePosW > 0) {			// right of intZero? scroll left
					holder_mc._x = Math.max(holder_mc._x - intRate * Math.pow((intMousePosW/intMaxRight),2), intRight - holder_mc._width);
				}			
				else if (intMousePosW < 0) 	{	// left of intZero? scroll right
					holder_mc._x = Math.min(holder_mc._x + intRate * Math.pow((intMousePosW/intMaxLeft),2), intLeft);
				}
*/
			
 			}
	
		}
		
	}
}