// SpryValidationSelect.js - version 0.10 - Spry Pre-Release 1.6.1
//
// Copyright (c) 2006. Adobe Systems Incorporated.
// All rights reserved.

var Spry;
if (!Spry) Spry = {};
if (!Spry.Widget) Spry.Widget = {};

Spry.Widget.ValidationSelect = function(element, opts)
{
	this.init(element);

	Spry.Widget.Utils.setOptions(this, opts);

	// set validateOn flags
	var validateOn = ['submit'].concat(this.validateOn || []);
	validateOn = validateOn.join(",");
	this.validateOn = 0 | (validateOn.indexOf('submit') != -1 ? Spry.Widget.ValidationSelect.ONSUBMIT : 0);
	this.validateOn = this.validateOn | (validateOn.indexOf('blur') != -1 ? Spry.Widget.ValidationSelect.ONBLUR : 0);
	this.validateOn = this.validateOn | (validateOn.indexOf('change') != -1 ? Spry.Widget.ValidationSelect.ONCHANGE : 0);

	if (this.additionalError)
		this.additionalError = this.getElement(this.additionalError);

	// Unfortunately in some browsers like Safari, the Stylesheets our page depends on may not have been loaded at the time we are called.  This means we have to defer attaching our behaviors until after the onload event fires, since some of our behaviors rely on dimensions specified in the CSS.

	if (Spry.Widget.ValidationSelect.onloadDidFire)
		this.attachBehaviors();
	else 
		Spry.Widget.ValidationSelect.loadQueue.push(this);
};

Spry.Widget.ValidationSelect.ONCHANGE = 1;
Spry.Widget.ValidationSelect.ONBLUR = 2;
Spry.Widget.ValidationSelect.ONSUBMIT = 4;

Spry.Widget.ValidationSelect.prototype.init = function(element)
{
	this.element = this.getElement(element);
	this.additionalError = false;
	this.selectElement = null;
	this.form = null;
	this.event_handlers = [];
	
	 // this.element can be either the container (<span>) or the <select> element, when no error messages are used.
	
	this.requiredClass = "selectRequiredState";
	this.invalidClass = "selectInvalidState";
	this.focusClass = "selectFocusState";
	this.validClass = "selectValidState";
	
	this.emptyValue = "";
	this.invalidValue = null;
	this.isRequired = true;
	
	this.validateOn = ["submit"];  // change, blur, submit
	// flag used to avoid cascade validation when both onChange and onBlur events are used to trigger validation
	this.validatedByOnChangeEvent = false;
};

Spry.Widget.ValidationSelect.prototype.destroy = function() {
	if (this.event_handlers)
		for (var i=0; i<this.event_handlers.length; i++) {
			Spry.Widget.Utils.removeEventListener(this.event_handlers[i][0], this.event_handlers[i][1], this.event_handlers[i][2], false);
		}
	try { delete this.element; } catch(err) {}
	try { delete this.selectElement; } catch(err) {}
	try { delete this.form; } catch(err) {}
	try { delete this.event_handlers; } catch(err) {}

	var q = Spry.Widget.Form.onSubmitWidgetQueue;
	var qlen = q.length;
	for (var i = 0; i < qlen; i++) {
		if (q[i] == this) {
			q.splice(i, 1);
			break;
		}
	}
};

Spry.Widget.ValidationSelect.onloadDidFire = false;
Spry.Widget.ValidationSelect.loadQueue = [];

Spry.Widget.ValidationSelect.prototype.getElement = function(ele)
{
	if (ele && typeof ele == "string")
		return document.getElementById(ele);
	return ele;
};

Spry.Widget.ValidationSelect.processLoadQueue = function(handler)
{
	Spry.Widget.ValidationSelect.onloadDidFire = true;
	var q = Spry.Widget.ValidationSelect.loadQueue;
	var qlen = q.length;
	for (var i = 0; i < qlen; i++)
		q[i].attachBehaviors();
};

Spry.Widget.ValidationSelect.addLoadListener = function(handler)
{
	if (typeof window.addEventListener != 'undefined')
		window.addEventListener('load', handler, false);
	else if (typeof document.addEventListener != 'undefined')
		document.addEventListener('load', handler, false);
	else if (typeof window.attachEvent != 'undefined')
		window.attachEvent('onload', handler);
};

Spry.Widget.ValidationSelect.addLoadListener(Spry.Widget.ValidationSelect.processLoadQueue);
Spry.Widget.ValidationSelect.addLoadListener(function(){
	Spry.Widget.Utils.addEventListener(window, "unload", Spry.Widget.Form.destroyAll, false);
});

Spry.Widget.ValidationSelect.prototype.attachBehaviors = function()
{
	// find the SELECT element inside current container
	if (this.element.nodeName == "SELECT") {
		this.selectElement = this.element;
	} else {
		this.selectElement = Spry.Widget.Utils.getFirstChildWithNodeNameAtAnyLevel(this.element, "SELECT");
	}

	if (this.selectElement) {
		var self = this;
		this.event_handlers = [];
		// focus
		// attach on beforeactivate instead of focus for
		//      - IE 6 (to overcome this bug: setting a class name onfocus does not affect the open dropdown)
		//      - IE 7 (to overcome this bug: setting a class name, closes the select)
		var focusEventName = "focus";
		var ua = navigator.userAgent.match(/msie (\d+)\./i);
		if (ua) {
			ua = parseInt(ua[1], 10);
			if (ua >= 6) {
				focusEventName = "beforeactivate";
			}
		}
		this.event_handlers.push([this.selectElement, focusEventName, function(e) { if (self.isDisabled()) return true; return self.onFocus(e); }]);
		// blur
		this.event_handlers.push([this.selectElement, "blur", function(e) { if (self.isDisabled()) return true; return self.onBlur(e); }]);
		// change
		if (this.validateOn & Spry.Widget.ValidationSelect.ONCHANGE) {
			this.event_handlers.push([this.selectElement, "change", function(e) { if (self.isDisabled()) return true; return self.onChange(e); }]);
			this.event_handlers.push([this.selectElement, "keypress", function(e) { if (self.isDisabled()) return true; return self.onChange(e); }]);
		}

		for (var i=0; i<this.event_handlers.length; i++) {
			Spry.Widget.Utils.addEventListener(this.event_handlers[i][0], this.event_handlers[i][1], this.event_handlers[i][2], false);
		}

		// submit
		this.form = Spry.Widget.Utils.getFirstParentWithNodeName(this.selectElement, "FORM");
		if (this.form) {
			// if no "onSubmit" handler has been attached to the current form, attach one
			if (!this.form.attachedSubmitHandler && !this.form.onsubmit) {
				this.form.onsubmit = function(e) { e = e || event; return Spry.Widget.Form.onSubmit(e, e.srcElement || e.currentTarget) };
				this.form.attachedSubmitHandler = true;                 
			}
			if (!this.form.attachedResetHandler) {
				Spry.Widget.Utils.addEventListener(this.form, "reset", function(e) { e = e || event; return Spry.Widget.Form.onReset(e, e.srcElement || e.currentTarget) }, false);
				this.form.attachedResetHandler = true;                 
			}
			// add the currrent widget to the "onSubmit" check queue;
			Spry.Widget.Form.onSubmitWidgetQueue.push(this);
		}
	}
};


Spry.Widget.ValidationSelect.prototype.addClassName = function(ele, className)
{
	if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))
		return;
	ele.className += (ele.className ? " " : "") + className;
};

Spry.Widget.ValidationSelect.prototype.removeClassName = function(ele, className)
{
	if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))
		return;
	ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
};



Spry.Widget.ValidationSelect.prototype.onFocus = function(e)
{
	this.hasFocus = true;
	this.validatedByOnChangeEvent = false;
	this.addClassName(this.element, this.focusClass);
	this.addClassName(this.additionalError, this.focusClass);
};

Spry.Widget.ValidationSelect.prototype.onBlur = function(e)
{
	this.hasFocus = false;
	var doValidation = false;
	if (this.validateOn & Spry.Widget.ValidationSelect.ONBLUR)
		doValidation = true;
	if (doValidation && !this.validatedByOnChangeEvent)
		this.validate();
	this.removeClassName(this.element, this.focusClass);
	this.removeClassName(this.additionalError, this.focusClass);
};

Spry.Widget.ValidationSelect.prototype.onChange = function(e)
{
	this.hasFocus = false;
	this.validate();
	this.validatedByOnChangeEvent = true;
};

Spry.Widget.ValidationSelect.prototype.reset = function() {
	this.removeClassName(this.element, this.requiredClass);
	this.removeClassName(this.element, this.invalidClass);
	this.removeClassName(this.element, this.validClass);
	this.removeClassName(this.additionalError, this.requiredClass);
	this.removeClassName(this.additionalError, this.invalidClass);
	this.removeClassName(this.additionalError, this.validClass);
};

Spry.Widget.ValidationSelect.prototype.validate = function() {
	this.reset();
	// check isRequired
	if (this.isRequired) {
		// there are no options, or no option has been selected
		if (this.selectElement.options.length == 0 || this.selectElement.selectedIndex == -1) {
			this.addClassName(this.element, this.requiredClass);
			this.addClassName(this.additionalError, this.requiredClass);
			return false;
		}
		// the current selected option has no "value" attribute
		// when no value is set, browsers implement different behaviour for the value property
		// IE: value = blank string ("")
		// FF, Opera: value = option text
		if (this.selectElement.options[this.selectElement.selectedIndex].getAttribute("value") == null) {
			this.addClassName(this.element, this.requiredClass);
			this.addClassName(this.additionalError, this.requiredClass);
			return false;
		}
		// the current selected option has blank string ("") value
		if (this.selectElement.options[this.selectElement.selectedIndex].value == this.emptyValue) {
			this.addClassName(this.element, this.requiredClass);
			this.addClassName(this.additionalError, this.requiredClass);
			return false;
		}
		// the current selected option has "disabled" attribute
		// IE 6 allows to select such options
		if (this.selectElement.options[this.selectElement.selectedIndex].disabled) {
			this.addClassName(this.element, this.requiredClass);
			this.addClassName(this.additionalError, this.requiredClass);
			return false;
		}
	}
	if (this.invalidValue) {
		if (this.selectElement.options.length > 0 && 
			this.selectElement.selectedIndex != -1 &&
			this.selectElement.options[this.selectElement.selectedIndex].value == this.invalidValue) {
			this.addClassName(this.element, this.invalidClass);
			this.addClassName(this.additionalError, this.invalidClass);
			return false;
		}
	}
	this.addClassName(this.element, this.validClass);
	this.addClassName(this.additionalError, this.validClass);
	return true;
};

Spry.Widget.ValidationSelect.prototype.isDisabled = function() {
	return this.selectElement.disabled;	
};

// Spry.Widget.Form - common for all widgets

if (!Spry.Widget.Form) Spry.Widget.Form = {};
if (!Spry.Widget.Form.onSubmitWidgetQueue) Spry.Widget.Form.onSubmitWidgetQueue = [];

if (!Spry.Widget.Form.validate) {
	Spry.Widget.Form.validate = function(vform) {
		var isValid = true;
		var isElementValid = true;
		var q = Spry.Widget.Form.onSubmitWidgetQueue;
		var qlen = q.length;
		for (var i = 0; i < qlen; i++) {
			if (!q[i].isDisabled() && q[i].form == vform) {
				isElementValid = q[i].validate();
				isValid = isElementValid && isValid;
			}
		}
		return isValid;
	}
};

if (!Spry.Widget.Form.onSubmit) {
	Spry.Widget.Form.onSubmit = function(e, form)
	{
		if (Spry.Widget.Form.validate(form) == false) {
			return false;
		}
		return true;
	};
};

if (!Spry.Widget.Form.onReset) {
	Spry.Widget.Form.onReset = function(e, vform)
	{
		var q = Spry.Widget.Form.onSubmitWidgetQueue;
		var qlen = q.length;
		for (var i = 0; i < qlen; i++) {
			if (!q[i].isDisabled() && q[i].form == vform && typeof(q[i].reset) == 'function') {
				q[i].reset();
			}
		}
		return true;
	};
};

if (!Spry.Widget.Form.destroy) {
	Spry.Widget.Form.destroy = function(form)
	{
		var q = Spry.Widget.Form.onSubmitWidgetQueue;
		for (var i = 0; i < Spry.Widget.Form.onSubmitWidgetQueue.length; i++) {
			if (q[i].form == form && typeof(q[i].destroy) == 'function') {
				q[i].destroy();
				i--;
			}
		}
	}
};

if (!Spry.Widget.Form.destroyAll) {
	Spry.Widget.Form.destroyAll = function()
	{
		var q = Spry.Widget.Form.onSubmitWidgetQueue;
		for (var i = 0; i < Spry.Widget.Form.onSubmitWidgetQueue.length; i++) {
			if (typeof(q[i].destroy) == 'function') {
				q[i].destroy();
				i--;
			}
		}
	}
};

// Spry.Widget.Utils

if (!Spry.Widget.Utils)	Spry.Widget.Utils = {};

Spry.Widget.Utils.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
{
	if (!optionsObj)
		return;
	for (var optionName in optionsObj)
	{
		if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
			continue;
		obj[optionName] = optionsObj[optionName];
	}
};


Spry.Widget.Utils.getFirstChildWithNodeNameAtAnyLevel = function(node, nodeName)
{
	var elements  = node.getElementsByTagName(nodeName);
	if (elements) {
		return elements[0];
	}
	return null;
};

Spry.Widget.Utils.getFirstParentWithNodeName = function(node, nodeName)
{
	while (node.parentNode
			&& node.parentNode.nodeName.toLowerCase() != nodeName.toLowerCase()
			&& node.parentNode.nodeName != 'BODY') {
		node = node.parentNode;
	}

	if (node.parentNode && node.parentNode.nodeName.toLowerCase() == nodeName.toLowerCase()) {
		return node.parentNode;
	} else {
		return null;
	}
};

Spry.Widget.Utils.destroyWidgets = function (container)
{
	if (typeof container == 'string') {
		container = document.getElementById(container);
	}

	var q = Spry.Widget.Form.onSubmitWidgetQueue;
	for (var i = 0; i < Spry.Widget.Form.onSubmitWidgetQueue.length; i++) {
		if (typeof(q[i].destroy) == 'function' && Spry.Widget.Utils.contains(container, q[i].element)) {
			q[i].destroy();
			i--;
		}
	}
};

Spry.Widget.Utils.contains = function (who, what)
{
	if (typeof who.contains == 'object') {
		return what && who && (who == what || who.contains(what));
	} else {
		var el = what;
		while(el) {
			if (el == who) {
				return true;
			}
			el = el.parentNode;
		}
		return false;
	}
};

Spry.Widget.Utils.addEventListener = function(element, eventType, handler, capture)
{
	try
	{
		if (element.addEventListener)
			element.addEventListener(eventType, handler, capture);
		else if (element.attachEvent)
			element.attachEvent("on" + eventType, handler, capture);
	}
	catch (e) {}
};

Spry.Widget.Utils.removeEventListener = function(element, eventType, handler, capture)
{
	try
	{
		if (element.removeEventListener)
			element.removeEventListener(eventType, handler, capture);
		else if (element.detachEvent)
			element.detachEvent("on" + eventType, handler, capture);
	}
	catch (e) {}
};