var printBasketTimeoutId = 0;

function addPrintBasket()
{
	var pb = new PrintBasket(g_country);
	
	var title = document.title;
	//Modified on 15 Aug 2007 by gary, Client request to show Page name instead of page title
	var pageNameElement = document.getElementById("page_name");
	title = pageNameElement.innerHTML;	

	var url = document.URL;
	var printMsg = document.getElementById("addPrintBasketMessage");
	
	if (pb.addPrintItem(title, url)) {
		//updatePrintBasket();
		//alert("new print item added");
		printMsg.innerHTML = "<span style=\"color:#F00;\">This page was added to print basket.</span>";
	}
	else {
		// print item added before
		//alert("the print item added before");
		printMsg.innerHTML = "<span style=\"color:#2543C3;\">This page has been added to print basket before.</span>";
	}
	printBasketTimeoutId = setTimeout("clearPrintBasketMessage()", 5000);
}

function clearPrintBasketMessage()
{
	var printMsg = document.getElementById("addPrintBasketMessage");
	printMsg.innerHTML = "";
	clearTimeout(printBasketTimeoutId);
}
/*
function gotoPrintBasket()
{
	//document.location = "/" + g_country + "/print-basket/index.html";
	//self.location.href = "/" + g_country + "/print-basket/index.html";
	//alert(self.location.href);
}
*/

// print basket obj
function PrintBasket(lang) {
	this._cookieNamePrefix += lang + "_";
	this.printItems = this.getPrintItemFromCookie();
}

PrintBasket.prototype.printItems = new Array();
PrintBasket.prototype._duration = 30; //days
PrintBasket.prototype._cookieNamePrefix = "hktb_print_basket_";

PrintBasket.prototype.addPrintItem = function(title, url) {
	
	var count = 0;
	var len = this.printItems.length;
	for (var i = 0; i < len; i++) {
		if (this.printItems[i].url != url) {
			count++;
		}
		else {
			break;
		}
	}
	
	if (count == len) {
		this.printItems.push(new PrintItem(title, url));
		this.addPrintItemToCookie(this.printItems.length - 1, title, url);
		return true;
	}
	else {
		return false;
	}
}

PrintBasket.prototype.deletePrintItem = function(idx) {
	this.printItems.splice(idx, 1);
	this.resetPrintItemToCookie();
}

PrintBasket.prototype.clearAllPrintItems = function(idx) {
	this.printItems = new Array();
	this.eraseAllPrintItemsFromCookie();
}

PrintBasket.prototype.getPrintItemFromCookie = function() {
	var i = 0;
	var items = new Array();
	while (1) {
		var title = readCookie(this._cookieNamePrefix + "title" + i);
		var url = readCookie(this._cookieNamePrefix + "url" + i);
		if ((title != null) && (url != null)) {
			items.push(new PrintItem(title, url));
			i++;
		}
		else {
			break;
		}
	}
	return items;
}

PrintBasket.prototype.addPrintItemToCookie = function(idx, title, url) {
	createCookie(this._cookieNamePrefix + "title" + idx, title, this._duration);
	createCookie(this._cookieNamePrefix + "url" + idx, url, this._duration);
}

PrintBasket.prototype.resetPrintItemToCookie = function() {
	this.eraseAllPrintItemsFromCookie();
	var len = this.printItems.length;
	for (var i = 0; i < len; i++) {
		createCookie(this._cookieNamePrefix + "title" + i, this.printItems[i].title, this._duration);
		createCookie(this._cookieNamePrefix + "url" + i, this.printItems[i].url, this._duration);
	}
}

PrintBasket.prototype.eraseAllPrintItemsFromCookie = function() {
	eraseAllCookies(this._cookieNamePrefix);
}

// print item obj
function PrintItem(title, url) {
	this.title = title;
	this.url = url;
}

PrintItem.prototype.title = "";
PrintItem.prototype.url = "";

// cookie util
function createCookie(name,value,days) {
	value = encodeURIComponent(value);
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return decodeURIComponent(c.substring(nameEQ.length,c.length));
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function eraseAllCookies(prefix) {
	
	var pattern = new RegExp(prefix + "[^=]*=", "g");
	var names = document.cookie.match(pattern);
	
	if (names != null) {
		var len = names.length;
		for (var i = 0; i < len; i++) {
			eraseCookie(names[i].substr(0, names[i].length-1));
		}
	}
	
}