/************************************************************************************************************
(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 = site_url+'/index.php?module=catalog&add_to_cart';
var url_removeProductFromBasket = site_url+'/index.php?module=catalog&remove_from_cart';
var txt_totalPrice = 'Всего: ';


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();

var count_of_orders=0;

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;
}
	
var count_set = 0;
function addToBasket(productId, count)
{
	if(count>=1)
	{
		count_set = count;
		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);
	}
	else
	{
		alert('Количество товара необходимо указывать целым числом.');
	}
}


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)
{
	// 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]))
	{	
		alert('Вы уже добавили этот товар в корзину!');
	}
	else
	{	
		count_of_orders++;
		var tr = itemBox.insertRow(-1);
		tr.id = 'shopping_cart_items_product' + productItems[0];
		var ins_body = "";
		var td = tr.insertCell(-1);
		td.style.paddingBottom = '4px';
		
		ins_body += "<div class=\"cart_body\"><div style=\"width:100%;\"><div class=\"cart_capt\">";
		ins_body += "<a href=\"index.php?module=catalog&aid="+productItems[0]+"\" class=\"cart_capt_link\">"+productItems[1]+"</a></div>";
		ins_body += "<div class=\"cart_inf\">Общая цена: <span>"+productItems[3]+"</span></div>";
		ins_body += "<div class=\"cart_inf\">Количество: <span>"+productItems[2]+"</span></div>";
		ins_body += "<div style=\"overflow:hidden; height:4px;\"></div><table cellpadding=\"0\" cellspacing=\"0\" style=\"width:100%;\" border=\"0\"><tr><td style=\"width:50%; padding:0px 4px 0px 2px;\">";
		ins_body += "<a href=\"javascript://\" onClick=\"removeProductFromBasket("+productItems[0]+"); return false;\" class=\"cart_btns\">Удалить</a>";
		ins_body += "</td><td style=\"width:50%; padding:0px 2px 0px 4px;\">";
		ins_body += "<a href=\"index.php?module=catalog&order="+productItems[0]+"\" class=\"cart_btns\">Заказать</a></td></tr></table></div></div>";
		td.innerHTML = ins_body;
		
		if(count_of_orders>0)
		{
			if($('no_articles'))
			{
				$('no_articles').style.display = 'none';
			}
		}
		else
		{
			if($('no_articles'))
			{
				$('no_articles').style.display = 'block';
			}
		}
		
		if(count_of_orders>1)
		{
			document.getElementById("order_all_btn").style.display = 'block';
		}
		else
		{
			document.getElementById("order_all_btn").style.display = 'none';
		}
		
		
	}
	ajaxObjects[ajaxIndex] = false;
}

function removeProductFromBasket(productId)
{
	var productRow = document.getElementById('shopping_cart_items_product' + productId);
	count_of_orders--;
	if(count_of_orders>1)
	{
		$('no_articles').style.display = 'none';
	}
	else
	{
		if(count_of_orders<1)
		{
			$('no_articles').style.display = 'block';
		}
		document.getElementById("order_all_btn").style.display = 'none';	
	}	
	var numberOfItemCell = productRow.cells[0];
	productRow.parentNode.removeChild(productRow);	
	ajaxRemoveProduct(productId);
}

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

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, count)
{
	if(count)
	{
		count_set = count;
	}
	if(count_set >= 1)
	{
		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('count', count_set);
		ajaxObjects[ajaxIndex].onCompletion = function(){showAjaxBasketContent(ajaxIndex);};	// Specify function that will be executed after file has been found		
		ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
	}
	else
	{
		alert('Количество товара необходимо указывать положительным, целым числом.');
	}
}