// Created: 01/06/2008 20:29
// common.js: Contains general functions for web content
//
// classes
// -------
// $(strID)
// strBuffer() 
// getParentKey(strKey)
// getParent(strKey) 
// getUIV(strKey) 
// checkFlagValue(intFlag, intCheck) 
// XMLify(strIn) 
// unix2Local(dtIn)
// trueBool(strIn) 
// isBool(strIn) 
// sec2hms(duration) 
// unixToLocale(dateIn, strType) 
// localeToUnix()
// getQParam(name)
// getPosition(e)
// isDisabled(element) 
// buttonEnable(element)
// buttonDisable(element)
// myContext() 
// unixToLocale(dateIn, strType) 
// getExtn(strIn) 
// showLoading(tgt)
// checkLevel(thisKey, myKey) 
// showDivUp(strID) 
// hideDivUp(strID) 
// checkRN(strIn) 
// sortObject(data, direction, by, isNumber) 
// sortFunc(direction, by, isNumber) 
// toCurrency(intIn)
// myContext() 

function $(strID) 
{
	//Returns the targetted element.
	//Shortcut for getElementById
	return document.getElementById(strID);
}

var Ajax = 
{
	"Request": function(strURL, objParams) 
	{
		var http;
		var options = objParams;
		
		//Create a socket on server, trying different browser tech (most modern first)
		try 
		{
			http = new XMLHttpRequest();
		} 
		catch (e) 
		{
			try 
			{
				http = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (E) 
			{
				return null;
			}
		}
		
		//Create request to server
		http.onreadystatechange = function() 
		{
			if (http.readyState > 1)
			{
				alert("Readystate = [" + http.readyState + "]");
			}
			if(http.readyState == 4) 
			{
				if(http.status) 
				{ //If the connection aborts, the status code is 0
					//Set up generic success/failure commands
					var pass = "Failure";
					if((http.status >= 200) && (http.status < 300)) 
					{
						pass = "Success";
					}
					try 
					{
						//Try to use onXXX callback for specific status codes
						options["on" + http.status](http);
					} 
					catch(e) 
					{
						try 
						{
							//Use generic success/failure commands
							options["on" + pass](http);
						} 
						catch (E) 
						{
							try 
							{
								//Call the exception callback
								options.onException(http, E);
							} 
							catch (ee)
							{
								//Do nothing extra
							}
						}
					}
				}
			}
		}
		if(objParams.method == "post") 
		{
			http.open("POST", strURL, true);
			http.setRequestHeader("Content-Type", options.contentType || "application/x-www-form-urlencoded");
			
			//Iterate through "headers" array to create user headers
			for(var c = 0; c < options.headers.length; c+=2) 
			{
				http.setRequestHeader(options.headers[c], options.headers[c+1]);
			} 
			http.send(options.postBody || null);
		} 
		else 
		{
			http.open("GET", strURL, true);
			http.send(options.postBody || null);
		}
	}
}

//Basic string building function
function strBuffer() 
{
	this.buffer = [];
}

strBuffer.prototype.append = function append(strIn) 
{
	this.buffer.push(strIn);
	return this;
}

strBuffer.prototype.toString = function toString() 
{
	return this.buffer.join("");
}

var cookie = 
{
	"create": function(strName, strVal, intDays) 
	{
		if(intDays) 
		{
			var date = new Date();
			date.setTime(date.getTime() + (intDays*24*3600*1000));
			var expiry = "; expires=" + date.toGMTString();
		} 
		else 
		{
			var expiry = "";
		}
		document.cookie = strName + "=" + strVal + "; path=/";
	},
	"read": function(strName) 
	{
		var nameEQ = name + "=";
		var aryCookie = document.cookie.split(";");
		for(var c = 0; c < aryCookie.length; c++) 
		{
			var pos = aryCookie[c];
			while(pos.charAt(0) == " ") 
			{
				pos = pos.substring(1, pos.length);
			}
			if(pos.indexOf(nameEQ) == 0) 
			{
				return pos.substring(nameEQ.length, pos.length);
			}
		}
		return null;
	},
	"delete": function(strName) 
	{
		cookie.create(strName, "", -1);
	}
}

function getParentKey(strKey) 
{
	if(strKey) 
	{
		var keyList = strKey.split("\\\\");
		var strOut = "";
		for(var c = 0; c < (keyList.length -1); c++) 
		{
			strOut += keyList[c] + "\\\\";
		}
		return "\\\\" + strOut;
	}
	return "";
}

function getParent(strKey) 
{
	var strOut = "";
	if(strKey) 
	{
		var keyList = strKey.split("\\");
		for(var c = 0; c < (keyList.length -2); c++) 
		{
			strOut += keyList[c] + "\\";
		}
	}
	return strOut;
}

function getUIV(strKey) 
{
	var keyList = strKey.split("\\");
	return keyList[keyList.length-2];
}

function checkFlagValue(intFlag, intCheck) 
{
	if((intFlag & intCheck) == intCheck) 
	{
		return true;
	} 
	else 
	{
		return false;
	}
}

function XMLify(strIn) 
{
	if(strIn) 
	{
		return String(strIn).replace(/\&/g,"&amp;").replace(/\</g,"&lt;").replace(/\>/g,"&gt;").replace(/\"/g,"&quot;").replace(/\'/g,"&apos;");
	}
	return strIn;	
}

function unix2Local(dtIn)
{
	this.dt = new Date(dtIn*1000);
	return this.dt.toLocaleString();
}

function trueBool(strIn) 
{
	if(strIn.toLowerCase() == "true") 
	{
		return true;
	}
	return false;
}

function isBool(strIn) 
{
	if(String(strIn).search(/^true$|^false$/) > -1) 
	{
		return true;
	}
	return false;
}

function sec2hms(duration) 
{
	if(!isNaN(duration)) 
	{
		var Hours = Math.floor(duration/3600);
		if(Hours < 10) 
		{
			Hours = "0" + Hours;
		}
		var Minutes = Math.floor((duration/60) % 60);
		if(Minutes < 10) 
		{
			Minutes = "0" + Minutes;
		}
		var Seconds = Math.floor(duration % 60);
		if(Seconds < 10) 
		{
			Seconds = "0" + Seconds;
		}
		return Hours + ":" + Minutes + ":" + Seconds;			
	}
	return duration;
}

String.prototype.truncate = function truncate(length, truncation) 
{
	truncation = truncation ? truncation : "";
	return (this.length > length) ? this.substring(0, length - truncation.length) + truncation  : this;
}

String.prototype.trim = function(){ return this.replace(/^\s+|\s+$/g, ''); }

function unixToLocale(dateIn, strType) 
{
		var dd = new Date(dateIn * 1000);
		switch(strType) {
			case "time":
				var format = "toLocaleTimeString";
				break;
			case "date":
				var format = "toLocaleDateString";
				break;
			default:
				var format = "toLocaleString";
		}
		// + (dd.getTimezoneOffset() * 60000)
		return new Date(dd.getTime())[format]();
}

function localeToUnix() {}

function getQParam(name) 
{
  name 				= name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS 		= "[\\?&]"+name+"=([^&#]*)";
  var regex 		= new RegExp(regexS);
  var results 		= regex.exec(window.location.href);
  return results 	? results[1] : "";
}

function getPosition(e)
{ 
	var left = 0; 
	var top  = 0; 

	while (e.offsetParent)
	{ 
		left += e.offsetLeft; 
		top  += e.offsetTop; 
		e     = e.offsetParent; 
	} 

	left += e.offsetLeft; 
	top  += e.offsetTop; 

	return {x:left, y:top}; 
} 

function isDisabled(element) 
{
	if(element && element.className.search(/disabled/) > -1) 
	{
		return true;
	}
	return false;
}

function buttonEnable(element) 
{
	if(element) 
	{
		element.className = element.className.replace(/\sdisabled/, "");
	}
}

function buttonDisable(element) 
{
	if(element && element.className.search(/disabled/) == -1) 
	{
		element.className += " disabled";
	}	
}

function myContext() 
{
	return { key: sessionContext, name: sessionName };
}

function unixToLocale(dateIn, strType) 
{
	var dd = new Date(dateIn * 1000);
	switch(strType) 
	{
		case "time":   var format = "toLocaleTimeString";   break;
		case "date":   var format = "toLocaleDateString";   break;
		default:       var format = "toLocaleString"; 
    }
	// + (dd.getTimezoneOffset() * 60000)
	return new Date(dd.getTime())[format]();
}
function getExtn(strIn) 
{
	var index = strIn.lastIndexOf(".");
	return strIn.substring(index);
}

function showLoading(tgt) 
{
	$(tgt).innerHTML = "<div class='inprogress'>Loading...<br /><img src='/common/img/progress.gif' alt='Loading' /></div>";
}

function checkLevel(thisKey, myKey) 
{
	if(thisKey.indexOf(myKey) != -1) 
	{
		return myKey;
	}
	return "";
}

function showDivUp(strID) 
{
	$("bg").style.display = "block";
	$(strID).style.display = "block";
	$("scrollbox").style.overflow = "hidden";
	$("scrollbox").style.marginRight = "17px";
}

function hideDivUp(strID) 
{
	$("bg").style.display = "none";
	$(strID).style.display = "none";
	$("scrollbox").style.overflow = "scroll";
	$("scrollbox").style.overflowX = "hidden";
	$("scrollbox").style.marginRight = "";
}

String.prototype.cleanHTML = function cleanHTML() 
{
	return this.replace(/<.*?>/g, "");
}

function checkRN(strIn) 
{
	if(strIn.search(/\r\n/) != -1) 
	{
		return strIn;
	}
	if(strIn.search(/\n/) != -1) 
	{
		var strOut = strIn.split("\n");
		var out = "";
		for(var c = 0; c < strOut.length; c++) 
		{
			out += strOut[c] + "\r\n";
		}
		return out;
	}
	return strIn;
}

var sortInProgress = false;

function sortObject(data, direction, by, isNumber) 
{
	if(!sortInProgress) 
	{
		sortInProgress = true;
		var sortArray = new Array();
		var objectName = "";
		
		for(var each in data) 
		{
			if(!objectName) 
			{
				objectName = String(each).match(/^\D+/);
			}
			sortArray.push(data[each]);
		}
		
		try 
		{
		    sortArray.sort(sortFunc(direction, by, isNumber));
		}
		catch(e)
		{
		    alert(e.description)
		}
		var returnData = {};
		
		for(var c = 0; c < sortArray.length; c++) 
		{
			returnData[objectName + (sortArray[c].uiv || sortArray[c].id)] = sortArray[c];
		}
		sortInProgress = false;
		return returnData;
	}
}

function sortFunc(direction, by, isNumber) 
{
	return function(a, b) 
	{
		var checkA = isNumber ? parseInt(a[by]) : a[by];
		var checkB = isNumber ? parseInt(b[by]) : b[by];
		
		if(direction == "asc") 
		{
			return checkA < checkB ? -1 : (checkA > checkB ? 1 : 0);
		} 
		else 
		{
			return checkA > checkB ? -1 : (checkA < checkB ? 1 : 0);
		}
	}
}

function toCurrency(intIn) 
{
	var num = 1000.01.toLocaleString();
	var decSeperator = num.substr(5, 1);
	var intOut = Number(Number(intIn.replace(",", "")).toFixed(2)).toLocaleString();
	
	if(intOut.lastIndexOf(decSeperator) == -1) {
		intOut += decSeperator + "00";
	}
	else 
	{
		if(intOut.substring(intOut.lastIndexOf(decSeperator) + 1).length != 2) 
		{
			intOut += "0";
		}
		if(intOut.substring(intOut.lastIndexOf(decSeperator) + 1).length != 2) 
		{
			intOut += "0";
		}
	}
	return intOut;
}

var existingUsers = "<h4>What's going on?</h4>";
	existingUsers+= "<p>As part of a major systems improvement, we're in the process of upgrading all our on-line services.</p>";
	existingUsers+= "<p>Because of the multi-tiered security that this new system employs, it is necessary to close all existing accounts, forcing them to change over to the new style.</p>";
	existingUsers+= "<p>We're sorry if this causes you any inconvenience but hope this hassle will be offset by the improved facilities available.</p>";
	existingUsers+= "<a href='' class='totop' onclick='this.parentNode.parentNode.removeChild(this.parentNode); return false;'>Close</a>";

function divUp(element, strMessage)
{
	if(!$("div_up"))
	{
		var pos = getPosition(element);
		var newDiv = document.createElement("div");
		
		newDiv.id = "div_up";
		newDiv.innerHTML = strMessage;
		newDiv.style.top = (pos.y + element.offsetHeight + 8) + "px";
		
		document.body.appendChild(newDiv);
		newDiv.style.left = pos.x + element.offsetWidth - newDiv.offsetWidth + "px";
	}
}

function checkForm()
{
	var err = "";
	if(!$("customerid").value.trim() || $("customerid").value.trim().search(/\D+/) > -1)
	{
		err += "  > Customer ID\r\n";
	}
	if($("email").value.trim().search(/^(.+)@(.+)\.(.+)$/) == -1)
	{
		err += "  > Email address\r\n";
	}
	if(err)
	{
		alert("The following details were not filled out correctly:\r\n\r\n" + err + "\r\nPlease check your details and try again.");
		return false;
	}
	return true;
}

function checkLoginForm()
{
	var err = "";
	if(!$("login_company").value.trim())
	{
		err += "  > Company name\r\n";
	}
	if($("login_email").value.trim().search(/^(.+)@(.+)\.(.+)$/) == -1)
	{
		err += "  > Email address\r\n";
	}
	if(err)
	{
		alert("The following details were not filled out correctly:\r\n\r\n" + err + "\r\nPlease check your details and try again.");
		return false;
	}
	return true;
}

function slideDown(strID)
{
	var element = $(strID);
	if(element)
	{
		if(element.offsetTop > -1)
		{
			element.style.top = "0";
			prepareSnow();
		}
		else
		{
			element.style.top = element.offsetTop + 2 + "px";
			setTimeout("slideDown('" + strID + "')", 30);
		}
	}
}

function createSystemMessage(msg, backgroundColor, textColor)
{
	if($("system_message"))
	{
		$("global_menu").removeChild($("system_message"));
	}
	if(msg)
	{
		var msgDiv = document.createElement("div");
		var msgClose = document.createElement("a");
		var msgImg = document.createElement("img");
		
		msgImg.src = "/common/img/button_close_mini.gif";
		msgImg.alt = "";
		msgImg.title = "Close this panel";
		msgClose.className = "system_close";
		msgClose.appendChild(msgImg);
		msgClose.onclick = destroySystemMessage;
		
		msgDiv.innerHTML = msg;
		msgDiv.appendChild(msgClose);
		msgDiv.style.backgroundColor = backgroundColor;
		msgDiv.style.color = textColor;
		msgDiv.id = "system_message";
		
		$("global_menu").appendChild(msgDiv);
		$(msgDiv.id).style.top = "-" + $(msgDiv.id).offsetHeight + "px";
		setTimeout("slideDown('" + msgDiv.id + "')", 1000);
	}
}

function destroySystemMessage()
{
	if($("system_message"))
	{
		$("system_message").parentNode.removeChild($("system_message"));
	}
}