/************************************************************************************************************
(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 = 15;
var txt_totalPrice = 'Total: ';


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)
{
	if(!shopping_cart_div)shopping_cart_div = document.getElementById('shopping_cart' + productid);
	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);
	shopping_cart_div = false;	
}


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';		
	}
		
	if(flyingDiv.style.display=='block')setTimeout('flyToBasket("' + productid + '")',10); else ajaxAddProduct(productid);	
}

function showAjaxBasketContent(ajaxIndex, productid)
{
	// Getting a reference to the shopping cart items table
	var itemBox = document.getElementById('shopping_cart_items'+productid);

	//itemBox.innerHTML = '';
	
	var productItems = ajaxObjects[ajaxIndex].response.split('|||');	// Breaking response from Ajax into tokens
	// productItems[0] is productid.md5(product_options)
	
	if(document.getElementById('shopping_cart_items_product' + productItems[0])){	// A product with this id is allready in the basket - just add number items
		var row = document.getElementById('shopping_cart_items_product' + productItems[0]);
		var items = row.cells[0].innerHTML /1;
		items = items + parseInt(productItems[3]);
		row.cells[0].innerHTML = items;
	}else{	// Product isn't allready in the basket - add a new row
		if (itemBox.rows.length == 0) {
			/*
			If first then display = block, create caption
			*/
			var tr = itemBox.insertRow(-1);
			var td = tr.insertCell(-1);
			tr.id = 'shopping_caption' + productid;
			td.innerHTML = '<b>Items</b>'; 	// Number of items
			
			var td = tr.insertCell(-1);
			td.innerHTML = '<b>SKU</b>'; 	// Number of items
			td.noWrap = true;
			
			var td = tr.insertCell(-1);
			td.style.textAlign = 'left';
			td.innerHTML = '<b>Description</b>'; 	// Number of items
			td.noWrap = true;
			
			var td = tr.insertCell(-1);
			td.innerHTML = '&nbsp;'; 	// Number of items
		}	

		var tr = itemBox.insertRow(-1);
		tr.id = 'shopping_cart_items_product' + productItems[0]
		
		var td = tr.insertCell(-1);
		td.innerHTML = productItems[3]; 	// Number of items
		
		var td = tr.insertCell(-1);
		td.innerHTML = productItems[1]; 	// SKU
		td.noWrap = true;
		
		var td = tr.insertCell(-1);
		td.style.textAlign = 'left';
		td.innerHTML = productItems[2]; 	// 	Options
		td.noWrap = true;
		
		var td = tr.insertCell(-1);
		var a = document.createElement('A');
		td.appendChild(a);
		td.noWrap = true;
		a.href = 'javascript:void(0);';
		a.onclick = function(){ removeProductFromBasket(productItems[0], productid); };
		var img = document.createElement('IMG');
		img.src = remove_src;
		img.border = 0;
		a.appendChild(img);
		a.innerHTML= a.innerHTML+'Remove Item';
		//td.innerHTML = '<a href="#" onclick="removeProductFromBasket("' + productItems[0] + '");return false;"><img src="images/remove.gif"></a>';	
	} 

	ajaxObjects[ajaxIndex] = false;		
	
}

function removeProductFromBasket(productid, cartid)
{
	var productRow = document.getElementById('shopping_cart_items_product' + productid);
	
	var numberOfrows = productRow.parentNode.rows.length;

	productRow.parentNode.removeChild(productRow);	
	if (numberOfrows == 2) {
		/*
		Remove caption
		*/
		var caption = document.getElementById('shopping_caption' + cartid);
		caption.parentNode.removeChild(caption);
	}	

	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;	// 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)
{
	var amount = func_get_selected_amount(productid);
	if (amount == 0) return;

	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('amount',amount);

	var options = func_get_selected_options(productid);

	for (var opt in options) 
		ajaxObjects[ajaxIndex].setVar(options[opt].name,options[opt].value);

	ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxBasketContent(ajaxIndex, productid); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
}

/*
Return all options for this product
*/
function func_get_selected_options(productid) {
	var elem;

	var result = new Array();

    for (var i = 0; i<document.orderform.elements.length; i++) {
		elem = document.orderform.elements[i];
        if ((elem.name.indexOf('rp['+productid+'][product_options]') > -1)) {
			var obj = new Object();
			if (elem.type == 'select-one') {
				/*
				This is select options
				*/
				if (elem.selectedIndex != -1) {
					obj.name = elem.name;// rp[16320][product_options][Valve]
					obj.value = elem.options[elem.selectedIndex].value;
					result[result.length] = obj;
				}
			}
			if (elem.type == 'text') {
				/*
				This is text options
				*/
				obj.name = elem.name;
				obj.value = elem.value;
				result[result.length] = obj;
			}
        }
    }

	return result;
}

function func_get_selected_amount(productid) {
	var obj = document.orderform.elements['rp['+productid+'][amount]'];
	if (obj && obj.selectedIndex != -1)
		return obj.options[obj.selectedIndex].value;
	return 0;
}