/************************************************************************************************************
(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 = 'cart.php';
var url_removeProductFromBasket = 'cart.php';
var txt_totalPrice = '';


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, productName, productPrice) // + productName, productPrice by gaspar@update.ee
{
	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, productName, productPrice);
}


function flyToBasket(productId, productName, productPrice) // + produtName, productPrice by gaspar@update.ee
{
	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';		
	}
	
	if(flyingDiv.style.display=='block')
		setTimeout("flyToBasket('"+productId+"','"+productName+"','"+productPrice+"')",10);
	else
		ajaxAddProduct(productId, productName, productPrice);	
}

// gaspar@update.ee
function updateRow(productId){
	var row = document.getElementById('shopping_cart_items_product' + productId);
	var items = row.cells[2].firstChild.value / 1;
	var price = row.cells[1].innerHTML / 1;
	row.cells[3].innerHTML = price * items;
	updateTotalPrice();
	// AJAX
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_addProductToBasket;	// Saving product in this file
	ajaxObjects[ajaxIndex].setVar('productId',productId);
	ajaxObjects[ajaxIndex].setVar('productTotal',items);
	//ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxBasketContent(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function
}
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
	
	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]);
		var items = row.cells[2].firstChild.value / 1;
		items = items + 1;
		row.cells[2].firstChild.value = items; // Items
		row.cells[3].innerHTML = items * row.cells[1].innerText;
		
		//updateRow(productItems[0]);
	} else {	// Product isn't in the basket - add a new row
		var tr = itemBox.insertRow(itemBox.rows.length-2);
		tr.id = 'shopping_cart_items_product' + productItems[0]

		var td = tr.insertCell(-1);
		td.innerHTML = productItems[1]; 	// Description

		var td = tr.insertCell(-1);
		//td.style.textAlign = 'right';
		td.innerHTML = productItems[2]; 	// Price
		td.className = "cartPrice";
		
		var td = tr.insertCell(-1);
		var input = document.createElement('INPUT');
		input.onkeyup = function(){updateRow(productItems[0])};
		input.value = '1'; 	// Number of items
		td.appendChild(input);
		td.className = "cartTotal";
		
		var td = tr.insertCell(-1); // Total
		td.innerHTML = productItems[2];
		td.className = "cartTotal";
		
		var td = tr.insertCell(-1);
		var a = document.createElement('A');
		td.appendChild(a);
		a.href = document.location+'#'; // Added document location! gaspar@update.ee
		a.onclick = function(){ removeProductFromBasket(productItems[0]); };
		var img = document.createElement('IMG');
		img.src = 'images/remove.gif';
		a.appendChild(img);
		//td.innerHTML = '<a href="#" onclick="removeProductFromBasket("' + productItems[0] + '");return false;"><img src="images/remove.gif"></a>';
	} 
	updateTotalPrice();
	showBasket();
	ajaxObjects[ajaxIndex] = false;
}
// gaspar@update.ee
function showBasket(){
	document.getElementById("shopping_cart").style.display = 'block';
}
function makeOrder()
{
	
}
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++){
			if (itemBox.rows[no].cells[2]) {
				totalPrice = totalPrice + (itemBox.rows[no].cells[1].innerHTML.replace(/[^0-9.]/g) * itemBox.rows[no].cells[2].firstChild.value);
			}
		}
		_totalPrice = totalPrice.toFixed(2);
		document.getElementById('shopping_cart_totalprice').innerHTML = _totalPrice==0 ? '' : txt_totalPrice + totalPrice.toFixed(2);
		document.getElementById('makeOrder').style.display = _totalPrice>0 ? '' : 'none';
	}
}

function removeProductFromBasket(productId)
{
	var productRow = document.getElementById('shopping_cart_items_product' + productId);
	
	/*var numberOfItemCell = productRow.cells[2];
	if(numberOfItemCell.innerHTML == '1'){
		productRow.parentNode.removeChild(productRow);
	}else{
		numberOfItemCell.innerHTML = numberOfItemCell.innerHTML/1 - 1;
	}*/
	// Remove all!
	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].onCompletion = function(){ ajaxValidateRemovedProduct(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function
}

function ajaxAddProduct(productId, productName, productPrice, productTotal) // + produtName, productPrice, productTotal by gaspar@update.ee
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_addProductToBasket;	// Saving product in this file
	ajaxObjects[ajaxIndex].setVar('productId',productId);
	ajaxObjects[ajaxIndex].setVar('productTotal',productTotal);
	ajaxObjects[ajaxIndex].setVar('productName',productName); // + produtName, productPrice by gaspar@update.ee
	ajaxObjects[ajaxIndex].setVar('productPrice',productPrice); // + produtName, productPrice by gaspar@update.ee
	ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxBasketContent(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function
}