// AddGeneratePasswordButton: Look for a password input field and add a generate password button next to it
function AddGeneratePasswordButton() {
	// Don't add the Generate button to certain pages where it wouldn't make sense
	// You could add more page titles here to exclude other pages if necessary
	var NoGenerate = [
		'',
		''
	];
	for (i=0; i<NoGenerate.length; i++) if (document.title == NoGenerate[i]) return;
	
	// Get the Password text box, if there is one
	var e = document.getElementsByName("password");
	if (e.length>0)
	{
		var b = document.createElement("input");
		b.type    = "button";
		b.value   = "Gerar Senha";
		b.onclick = GeneratePassword;
		//e[0].parentNode.appendChild(b);
		insertAfter(e[0],b);
	}
}

// This function inserts newNode after referenceNode
// Source: http://www.netlobo.com/javascript-insertafter.html
function insertAfter( referenceNode, newNode )
{
    referenceNode.parentNode.insertBefore( newNode, referenceNode.nextSibling );
}

// IE doesn't let us dynamically change the type of an <input> object.
// This function creates a new <input> object, copies the properties of the old one into the new one,
// and replaces the old object with the new one.
// Source: http://www.universalwebservices.net/web-programming-resources/javascript/change-input-element-type-using-javascript
function changeInputType(oldObject, oType) {
	var newObject = document.createElement('input');
	newObject.type = oType;
	if(oldObject.size) newObject.size = oldObject.size;
	if(oldObject.value) newObject.value = oldObject.value;
	if(oldObject.name) newObject.name = oldObject.name;
	if(oldObject.id) newObject.id = oldObject.id;
	if(oldObject.className) newObject.className = oldObject.className;
	oldObject.parentNode.replaceChild(newObject,oldObject);

	// Adding this for the password strength meter
	// This is copied in part from /whmcs/includes/jscript/pwstrength.js
	$("#newpw").keyup(function () {
	    var pwvalue = $("#newpw").val();
	    var pwstrength = getPasswordStrength(pwvalue);
	    $("#pwstrength").html("Forte");
	    $("#pwstrengthpos").css("background-color","#33CC00");
	    if (pwstrength<75) {
	        $("#pwstrength").html("Media");
	        $("#pwstrengthpos").css("background-color","#ff6600");
	    }
	    if (pwstrength<30) {
	        $("#pwstrength").html("Fraca");
	        $("#pwstrengthpos").css("background-color","#cc0000");
	    }
	    $("#pwstrengthpos").css("width",pwstrength);
	    $("#pwstrengthneg").css("width",100-pwstrength);
	});
	// End copied code

	return newObject;
}

// GeneratePassword: Generate a password and place it in the necessary textbox or textboxes
function GeneratePassword() {
	var p = GetRandomPassword();
	var e = document.getElementsByName("password");
	if (e.length>0) {
		e[0].value = p;
		if (e[0].type == "password") changeInputType(e[0],"text");
	}
	// For a "confirm password" field
	e = document.getElementsByName("password2");
	if (e.length>0) {
		e[0].value = p;
		if (e[0].type == "password") changeInputType(e[0],"text");
	}
	
	// Call the password keyup function (if it exists) to update the pw strength meter on the order checkout page
	$("#newpw").keyup();
}

// GetRandomNumber: Get a random number between two specified numbers
function GetRandomNumber(lbound,ubound) {
	return (Math.floor(Math.random() * (ubound-lbound)) + lbound);
}

// GetRandomCharacter: Get a random character from a specified character set
function GetRandomCharacter() {
	var chars = ""; // Choose your character sets below
	chars += "0123456789";
	chars += "abcdefghijklmnopqrstuvwxyz";
	chars += "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	
	return chars.charAt(GetRandomNumber(0,chars.length));
}

// GetRandomPassword: Get a random password of a specified length
function GetRandomPassword() {
	var p = "";
	for (i=0; i<8; i++) p += GetRandomCharacter();
	return p;
}

//------------------------------------------------------------------------------

// Adding events to onLoad
// Source: http://onlinetools.org/articles/unobtrusivejavascript/chapter4.html
function addEvent(obj, evType, fn){ 
 if (obj.addEventListener){ 
   obj.addEventListener(evType, fn, false); 
   return true; 
 } else if (obj.attachEvent){ 
   var r = obj.attachEvent("on"+evType, fn); 
   return r; 
 } else { 
   return false; 
 } 
}