/************************************************************************************************************
(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 = '../php/decsBasketAdd.php';
var url_removeProductFromBasket = '../php/decsBasketDel.php';
var url_updateQuery = '../php/decsBasketSearch.php';
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 _index = 0;
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,productOptions)
{
	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,productOptions);
	
}


function flyToBasket(productId,productName,productOptions)
{
	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 + '","' + productOptions + '")',10); else ajaxAddProduct(productId,productName, productOptions);	
}

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('shoping_cart_items_product' + productItems[0])){	// A product with this id is allready in the basket - just add number items
		var row = document.getElementById('shoping_cart_items_product' + productItems[0]);
		var items = row.cells[0].innerHTML /1;
		items = items + 1;
		//row.cells[0].innerHTML = items;
	}else{	// Product isn't allready in the basket - add a new row
		
		var totalRows = itemBox.rows.length;
		var evenOdd = (totalRows % 2 == 0 ? 'oddLine' : 'evenLine');
		
		var tr = itemBox.insertRow(-1);
		tr.id = 'shoping_cart_items_product' + productItems[0];
		tr.className = evenOdd;

		var td = tr.insertCell(-1);
		td.width = 20;
		td.innerHTML = '<a href="#" onclick="removeProductFromBasket(\'' + productItems[0] + '\');return false;"><span>X</span></a>';
		
		var td = tr.insertCell(-1);
		td.width = 20;
		if (productItems[2].indexOf('Q') !=-1){
			td.innerHTML = '<a href="#" onclick="selectTermQualifier(\'' + productItems[0] + '\');return false;"><span>Q</span></a>';
		}	

		var td = tr.insertCell(-1);
		td.width = 20;
		if (productItems[2].indexOf('Ex') !=-1){
			td.innerHTML = '<a href="#" onclick="selectTermExplode(\'' + productItems[0] + '\');return false;"><span>Ex</span></a>';
		}	

		var td = tr.insertCell(-1);
		td.innerHTML = productItems[1]; 	// Description
		/*
		var td = tr.insertCell(-1);
		td.style.textAlign = 'right';
		td.innerHTML = productItems[2]; 	// Price	
		*/
	} 

	showHideSearchOptions();
	
	ajaxObjects[ajaxIndex] = false;		
	
}


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

function updateQuery(ajaxIndex)
{
	var expression = document.getElementById('expression');
	var basketQuery = ajaxObjects[ajaxIndex].response;
	
	expression.value = basketQuery;
	document.send2search.submit();
}

function ajaxUpdateQuery()
{
	var connector = document.send2search.connector.value;
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_updateQuery + '?connector=' + connector;
	ajaxObjects[ajaxIndex].onCompletion = function(){ updateQuery(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		

}

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,productOptions)
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_addProductToBasket + '?productId=' + productId + '&productName=' + productName + '&productOptions=' + productOptions;	// 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		
}

function showHideSearchOptions()
{
	var searchButtonEnabled = document.getElementById('searchButtonEnabled');
	var searchButtonDisabled = document.getElementById('searchButtonDisabled');
	var emptyListRow = document.getElementById('shoping_cart_items_product0');
	
	var itemBox = document.getElementById('shopping_cart_items');
	
	if (itemBox.rows.length == 1){
		searchButtonEnabled.style.display = "none";
		searchButtonDisabled.style.display = "block";
		emptyListRow.style.display = "block";
	}	
		
	if (itemBox.rows.length >= 2){
		searchButtonEnabled.style.display = "block";
		searchButtonDisabled.style.display = "none";		
		emptyListRow.style.display = "none";
	}	
}