/************************************************************************************************************
(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      = '/index.php?module=catalog&add_to_cart';
var url_removeProductFromBasket = '/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)
	{
		count=count_set;
	}
	if(!count && document.getElementById('product_count')!==null)
	{
		count=parseFloat(document.getElementById('product_count').value);
	}
	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, count);
	}
	else
	{
		alert('Количество товара необходимо указывать целым числом.');
	}
}


function flyToBasket(productId, count)
{
	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 (typeof(count)=="undefined")
		count = 1;

	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 + '", '+count+')',10); else ajaxAddProduct(productId, count);
}

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]))
	{
		$quantity = jQuery('#shopping_cart_items_product'+productItems[0]).find('.cart_quantity span');
		$price    = jQuery('#shopping_cart_items_product'+productItems[0]).find('.cart_price span');

		price_val = parseInt($price.html());
		price_val += parseInt(productItems[3]);
		$price.html(price_val);

		quantity_val = parseInt($quantity.html());
		quantity_val += parseInt(productItems[2]);
		$quantity.html(quantity_val);
	}
	else
	{
		count_of_orders++;
		var tr = itemBox.insertRow(-1);
		tr.id = 'shopping_cart_items_product' + productItems[0];
		var td = tr.insertCell(-1);
		td.style.paddingBottom = '4px';

		td.innerHTML = "<div class='cart_body'>" +
			"<div class='cart_capt'>" +
			"<a href='index.php?module=catalog&aid="+productItems[0]+"' class='cart_capt_link'>"+productItems[1]+"</a>" +
			"</div>" +
			"<div class='cart_price'>Общая цена: <span>"+productItems[3]+"</span></div>" +
			"<div class='cart_quantity'>Количество: <span>"+productItems[2]+"</span></div>" +
			"<div style='padding:0 4px 0 2px;'>" +
			"<a href='javascript://' onClick='removeProductFromBasket("+productItems[0]+"); return false;' class='cart_btns'>Удалить</a>" +
			"</div>" +
			"</div>";

		if (count_of_orders > 0) {
			if ($('no_articles')) {
				$('no_articles').style.display = 'none';
			}
			document.getElementById("order_all_btn").style.display = 'block';
		} else {
			if ($('no_articles')) {
				$('no_articles').style.display = 'block';
			}
			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 > 0) {
		$('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, append)
{
	if(typeof(append)=='undefined')
		append = false;
	if(count)
	{
		count_set = count;
	}
	if(count_set >= 1)
	{
		document.getElementById("cart_box").style.display="";
		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].setVar('append', append);
		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.');
	}
}