/************************************************************************************************************
(C) www.dhtmlgoodies.com, March 2006

This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.

Version:
	1.0	Released	March. 3rd 2006

Thank you!

www.dhtmlgoodies.com
Alf Magne Kalleland

************************************************************************************************************/

var flyingSpeed = 25;
var url_addProductToBasket = 'addProduct.php';
var url_removeProductFromBasket = 'removeProduct.php';
var txt_totalPrice = 'Total: ';
var taxes = 'plus shipping and taxes';


var shopping_cart_div = false;
var flyingDiv = false;
var currentProductDiv = false;

var shopping_cart_x = false;
var shopping_cart_y = false;

var slide_xFactor = false;
var slide_yFactor = false;

var diffX = false;
var diffY = false;

var currentXPos = false;
var currentYPos = false;

var ajaxObjects = new Array();


function shoppingCart_getTopPos(inputObj)
{		
  var returnValue = inputObj.offsetTop;
  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetTop;
  }
  return returnValue;
}

function shoppingCart_getLeftPos(inputObj)
{
  var returnValue = inputObj.offsetLeft;
  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetLeft;
  }
  return returnValue;
}

function addToBasket(productId)
{
	var sqf_requested = document.getElementById('sqf_requested'+productId).value;
	if(sqf_requested > 0)
	{
		if(!shopping_cart_div)shopping_cart_div = document.getElementById('shopping_cart');
		if(!flyingDiv){
			flyingDiv = document.createElement('DIV');
			flyingDiv.style.position = 'absolute';
			document.body.appendChild(flyingDiv);
		}
		shopping_cart_x = shoppingCart_getLeftPos(shopping_cart_div);
		shopping_cart_y = shoppingCart_getTopPos(shopping_cart_div);

		currentProductDiv = document.getElementById('slidingProduct' + productId);

		currentXPos = shoppingCart_getLeftPos(currentProductDiv);
		currentYPos = shoppingCart_getTopPos(currentProductDiv);

		diffX = shopping_cart_x - currentXPos;
		diffY = shopping_cart_y - currentYPos;

		var shoppingContentCopy = currentProductDiv.cloneNode(true);
		shoppingContentCopy.id='';
		flyingDiv.innerHTML = '';
		flyingDiv.style.left = currentXPos + 'px';
		flyingDiv.style.top = currentYPos + 'px';
		flyingDiv.appendChild(shoppingContentCopy);
		flyingDiv.style.display='block';
		flyingDiv.style.width = currentProductDiv.offsetWidth + 'px';
		flyToBasket(productId);
	}
}


function flyToBasket(productId)
{
	var maxDiff = Math.max(Math.abs(diffX),Math.abs(diffY));
	var moveX = (diffX / maxDiff) * flyingSpeed;;
	var moveY = (diffY / maxDiff) * flyingSpeed;	
	
	currentXPos = currentXPos + moveX;
	currentYPos = currentYPos + moveY;
	
	flyingDiv.style.left = Math.round(currentXPos) + 'px';
	flyingDiv.style.top = Math.round(currentYPos) + 'px';	
	
	
	if(moveX>0 && currentXPos > shopping_cart_x)
	{
		flyingDiv.style.display='none';		
	}
	if(moveX<0 && currentXPos < shopping_cart_x)
	{
		flyingDiv.style.display='none';		
	}

	var total_qty = itemTotalPlusName(productId,'qty');
	var sqf_requested = itemTotalPlusName(productId,'qtyRequested');//document.getElementById('sqf_requested'+productId).value;
	if(flyingDiv.style.display=='block')setTimeout('flyToBasket("' + productId + '")',10); else ajaxAddProduct(productId,total_qty,sqf_requested);	
}

function itemTotalPlusName(productId,returnThis)
{
	//sqf_requested = square footage 
	var sqf_requested = document.getElementById('sqf_requested'+productId).value;
	var sq_ft_per = document.getElementById('sq_ft_per'+productId).value

	// Product isn't already in the basket - add a new row
	//If it is an item sold by piece not square footage
	if(sq_ft_per == 0)
	{
		qty = qtyRequested = sqf_requested;// Number of items
	}
	else
	{
		var qtyCal = (144 * sqf_requested)/(sq_ft_per);
		qty = Math.ceil(qtyCal);
		//Calculate how much sqf the client will receive total after rounding up. Since they must buy the entire slate.
		qtyActual = ((qty * sq_ft_per)/144);
		qtyActual = Math.round(qtyActual * 100) / 100;
		qtyRequested = qtyActual;
	}
	if(returnThis == 'qty')
	{
		return qty;
	}
	if(returnThis == 'qtyRequested')
	{
		return qtyRequested;
	}
}

function showAjaxBasketContent(ajaxIndex)
{
	// Getting a reference to the shopping cart items table
	var itemBox = document.getElementById('shopping_cart_items');
	
	var productItems = ajaxObjects[ajaxIndex].response.split('|||');	// Breaking response from Ajax into tokens
	var qty = itemTotalPlusName(productItems[0],'qty');
	var qtyRequested = itemTotalPlusName(productItems[0],'qtyRequested'); //Square foot Or Per Unit Requested
	var lineColorFinish = productItems[1]; 	// Description
	
	if(!document.getElementById('shopping_cart_titles'))
	{
		var tr = itemBox.insertRow(-1);
		tr.className = "orderList";
		tr.id = 'shopping_cart_titles';
		//tr.style.backgroundColor = "#f79963";
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.innerHTML = "Qty";
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.innerHTML = "Description";
		td.width = "100%";
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.innerHTML = "Price";
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.innerHTML = "<img src='graphics/remove.gif'>";
	}
	
	if(document.getElementById('shopping_cart_items_product' + productItems[0]))
	{	// A product with this id is already in the basket - just add number items
		var row = document.getElementById('shopping_cart_items_product' + productItems[0]);
		
		row.cells[0].innerHTML = qtyRequested; // Qty Actual to sell from request 
		row.cells[0].vAlign = 'top';
		
		row.cells[1].innerHTML = lineColorFinish + "<br>("+qty+" pcs)"; //lineColorFinish +  Number of items
	}
	else
	{	// Product isn't already in the basket - add a new row
		var tr = itemBox.insertRow(-1);
		tr.id = 'shopping_cart_items_product' + productItems[0];
		var thisRow = document.getElementById('shopping_cart_items_product' + productItems[0]);
		thisRow.onmouseover = function()
		{
			this.style.backgroundColor = "#f79963";//"#E2EBED";
		};
		thisRow.onmouseout = function()
		{
			this.style.backgroundColor = "";
		};		
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.vAlign = "top";
		td.innerHTML = qtyRequested; 	// Qty Actual to sell from request 
		
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.innerHTML = lineColorFinish + "<br>("+qty+" pcs)"; // Number of items + sqf_requested
		
		var td = tr.insertCell(-1);
		td.className = "orderList";
		td.vAlign = "top";
		td.style.textAlign = 'right';
		td.innerHTML = productItems[2]; 	// Price	
		
		var td = tr.insertCell(-1);
		td.className = "orderList";
		var a = document.createElement('A');
		a.href = '#';
		a.onclick = function(){ removeProductFromBasket(productItems[0]); };
		var img = document.createElement('IMG');
		img.src = 'graphics/remove.gif';
		a.appendChild(img);
		td.appendChild(a);
		td.vAlign = "middle";
		td.style.textAlign = 'center';
	} 
	document.getElementById('total_qty'+productItems[0]).value = qty;
	updateTotalPrice();
	ajaxObjects[ajaxIndex] = false;
	
}

function formatCurrency(num) 
{
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	return (((sign)?'':'-') + '$' + num + '.' + cents);
}

function updateTotalPrice()
{
	var itemBox = document.getElementById('shopping_cart_items');
	// Calculating total price and showing it below the table with basket items
	var totalPrice = 0;
	if(document.getElementById('shopping_cart_totalprice')){
		for(var no=1;no<itemBox.rows.length;no++){
			//totalPrice = totalPrice + (itemBox.rows[no].cells[0].innerHTML.replace(/[^0-9]/g) * itemBox.rows[no].cells[2].innerHTML);
			totalPrice = totalPrice + (itemBox.rows[no].cells[0].innerHTML * itemBox.rows[no].cells[2].innerHTML);
		}		
		document.getElementById('shopping_cart_totalprice').innerHTML = txt_totalPrice + formatCurrency(totalPrice.toFixed(2)) + "<br>" +taxes;
	}
	if(totalPrice == 0) //Hide entire basket Order.
	{
		if(document.getElementById('shopping_cart_titles'))
		{
			var titleRow = document.getElementById('shopping_cart_titles');
			titleRow.parentNode.removeChild(titleRow);
		}
		document.getElementById('shopping_cart_totalprice').innerHTML = "<center>Shopping Cart is Empty</center>";
	}
	
}

function removeProductFromBasket(productId)
{
	var productRow = document.getElementById('shopping_cart_items_product' + productId);
	productRow.parentNode.removeChild(productRow);
	
	updateTotalPrice();
	ajaxRemoveProduct(productId);	
}

function ajaxValidateRemovedProduct(ajaxIndex)
{
	if(ajaxObjects[ajaxIndex].response!='OK')alert('Error while removing product from the database');
	
}

function ajaxRemoveProduct(productId)
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_removeProductFromBasket;// + '?productIdToRemove=' + productId;	// Saving product in this file
	ajaxObjects[ajaxIndex].setVar('productIdToRemove',productId);
	ajaxObjects[ajaxIndex].onCompletion = function(){ ajaxValidateRemovedProduct(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
}

function ajaxAddProduct(productId,total_qty,sqf_requested)
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].setVar('productId',productId);
	ajaxObjects[ajaxIndex].setVar('productQty',total_qty);
	ajaxObjects[ajaxIndex].setVar('productSqfReq',sqf_requested);
	ajaxObjects[ajaxIndex].requestFile = url_addProductToBasket;	// Saving product in this file
	ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxBasketContent(ajaxIndex); };	// Specify function that will be executed after file has been found

	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
}