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2024-10-30 8cf23534166c07e711aac2a25911ada317ba01f0

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58d006	1	/*=============================================================================
A	2	Author: Eric M. Barnard - @ericmbarnard
	3	License: MIT (http://opensource.org/licenses/mit-license.php)
	4
	5	Description: Validation Library for KnockoutJS
	6	Version: 2.0.1
	7	===============================================================================
	8	*/
	9	/globals require: false, exports: false, define: false, ko: false /
	10
	11	(function (factory) {
	12	// Module systems magic dance.
	13
	14	if (typeof require === "function" && typeof exports === "object" && typeof module === "object") {
	15	// CommonJS or Node: hard-coded dependency on "knockout"
	16	factory(require("knockout"), exports);
	17	} else if (typeof define === "function" && define["amd"]) {
	18	// AMD anonymous module with hard-coded dependency on "knockout"
	19	define(["knockout", "exports"], factory);
	20	} else {
	21	// <script> tag: use the global `ko` object, attaching a `mapping` property
	22	factory(ko, ko.validation = {});
	23	}
	24	}(function ( ko, exports ) {
	25
	26	if (typeof (ko) === 'undefined') {
	27	throw new Error('Knockout is required, please ensure it is loaded before loading this validation plug-in');
	28	}
	29
	30	// create our namespace object
	31	ko.validation = exports;
	32
	33	var kv = ko.validation,
	34	koUtils = ko.utils,
	35	unwrap = koUtils.unwrapObservable,
	36	forEach = koUtils.arrayForEach,
	37	extend = koUtils.extend;
	38	;/global ko: false/
	39
	40	var defaults = {
	41	registerExtenders: true,
	42	messagesOnModified: true,
	43	errorsAsTitle: true, // enables/disables showing of errors as title attribute of the target element.
	44	errorsAsTitleOnModified: false, // shows the error when hovering the input field (decorateElement must be true)
	45	messageTemplate: null,
	46	insertMessages: true, // automatically inserts validation messages as <span></span>
	47	parseInputAttributes: false, // parses the HTML5 validation attribute from a form element and adds that to the object
	48	writeInputAttributes: false, // adds HTML5 input validation attributes to form elements that ko observable's are bound to
	49	decorateInputElement: false, // false to keep backward compatibility
	50	decorateElementOnModified: true,// true to keep backward compatibility
	51	errorClass: null, // single class for error message and element
	52	errorElementClass: 'validationElement', // class to decorate error element
	53	errorMessageClass: 'validationMessage', // class to decorate error message
	54	allowHtmlMessages: false, // allows HTML in validation messages
	55	grouping: {
	56	deep: false, //by default grouping is shallow
	57	observable: true, //and using observables
	58	live: false //react to changes to observableArrays if observable === true
	59	},
	60	validate: {
	61	// throttle: 10
	62	}
	63	};
	64
	65	// make a copy so we can use 'reset' later
	66	var configuration = extend({}, defaults);
	67
	68	configuration.html5Attributes = ['required', 'pattern', 'min', 'max', 'step'];
	69	configuration.html5InputTypes = ['email', 'number', 'date'];
	70
	71	configuration.reset = function () {
	72	extend(configuration, defaults);
	73	};
	74
	75	kv.configuration = configuration;
	76	;kv.utils = (function () {
	77	var seedId = new Date().getTime();
	78
	79	var domData = {}; //hash of data objects that we reference from dom elements
	80	var domDataKey = '__ko_validation__';
	81
	82	return {
	83	isArray: function (o) {
	84	return o.isArray \|\| Object.prototype.toString.call(o) === '[object Array]';
	85	},
	86	isObject: function (o) {
	87	return o !== null && typeof o === 'object';
	88	},
	89	isNumber: function(o) {
	90	return !isNaN(o);
	91	},
	92	isObservableArray: function(instance) {
	93	return !!instance &&
	94	typeof instance["remove"] === "function" &&
	95	typeof instance["removeAll"] === "function" &&
	96	typeof instance["destroy"] === "function" &&
	97	typeof instance["destroyAll"] === "function" &&
	98	typeof instance["indexOf"] === "function" &&
	99	typeof instance["replace"] === "function";
	100	},
	101	values: function (o) {
	102	var r = [];
	103	for (var i in o) {
	104	if (o.hasOwnProperty(i)) {
	105	r.push(o[i]);
	106	}
	107	}
	108	return r;
	109	},
	110	getValue: function (o) {
	111	return (typeof o === 'function' ? o() : o);
	112	},
	113	hasAttribute: function (node, attr) {
	114	return node.getAttribute(attr) !== null;
	115	},
	116	getAttribute: function (element, attr) {
	117	return element.getAttribute(attr);
	118	},
	119	setAttribute: function (element, attr, value) {
	120	return element.setAttribute(attr, value);
	121	},
	122	isValidatable: function (o) {
	123	return !!(o && o.rules && o.isValid && o.isModified);
	124	},
	125	insertAfter: function (node, newNode) {
	126	node.parentNode.insertBefore(newNode, node.nextSibling);
	127	},
	128	newId: function () {
	129	return seedId += 1;
	130	},
	131	getConfigOptions: function (element) {
	132	var options = kv.utils.contextFor(element);
	133
	134	return options \|\| kv.configuration;
	135	},
	136	setDomData: function (node, data) {
	137	var key = node[domDataKey];
	138
	139	if (!key) {
	140	node[domDataKey] = key = kv.utils.newId();
	141	}
	142
	143	domData[key] = data;
	144	},
	145	getDomData: function (node) {
	146	var key = node[domDataKey];
	147
	148	if (!key) {
	149	return undefined;
	150	}
	151
	152	return domData[key];
	153	},
	154	contextFor: function (node) {
	155	switch (node.nodeType) {
	156	case 1:
	157	case 8:
	158	var context = kv.utils.getDomData(node);
	159	if (context) { return context; }
	160	if (node.parentNode) { return kv.utils.contextFor(node.parentNode); }
	161	break;
	162	}
	163	return undefined;
	164	},
	165	isEmptyVal: function (val) {
	166	if (val === undefined) {
	167	return true;
	168	}
	169	if (val === null) {
	170	return true;
	171	}
	172	if (val === "") {
	173	return true;
	174	}
	175	},
	176	getOriginalElementTitle: function (element) {
	177	var savedOriginalTitle = kv.utils.getAttribute(element, 'data-orig-title'),
	178	currentTitle = element.title,
	179	hasSavedOriginalTitle = kv.utils.hasAttribute(element, 'data-orig-title');
	180
	181	return hasSavedOriginalTitle ?
	182	savedOriginalTitle : currentTitle;
	183	},
	184	async: function (expr) {
	185	if (window.setImmediate) { window.setImmediate(expr); }
	186	else { window.setTimeout(expr, 0); }
	187	},
	188	forEach: function (object, callback) {
	189	if (kv.utils.isArray(object)) {
	190	return forEach(object, callback);
	191	}
	192	for (var prop in object) {
	193	if (object.hasOwnProperty(prop)) {
	194	callback(object[prop], prop);
	195	}
	196	}
	197	}
	198	};
	199	}());;var api = (function () {
	200
	201	var isInitialized = 0,
	202	configuration = kv.configuration,
	203	utils = kv.utils;
	204
	205	function cleanUpSubscriptions(context) {
	206	forEach(context.subscriptions, function (subscription) {
	207	subscription.dispose();
	208	});
	209	context.subscriptions = [];
	210	}
	211
	212	function dispose(context) {
	213	if (context.options.deep) {
	214	forEach(context.flagged, function (obj) {
	215	delete obj.__kv_traversed;
	216	});
	217	context.flagged.length = 0;
	218	}
	219
	220	if (!context.options.live) {
	221	cleanUpSubscriptions(context);
	222	}
	223	}
	224
	225	function runTraversal(obj, context) {
	226	context.validatables = [];
	227	cleanUpSubscriptions(context);
	228	traverseGraph(obj, context);
	229	dispose(context);
	230	}
	231
	232	function traverseGraph(obj, context, level) {
	233	var objValues = [],
	234	val = obj.peek ? obj.peek() : obj;
	235
	236	if (obj.__kv_traversed === true) {
	237	return;
	238	}
	239
	240	if (context.options.deep) {
	241	obj.__kv_traversed = true;
	242	context.flagged.push(obj);
	243	}
	244
	245	//default level value depends on deep option.
	246	level = (level !== undefined ? level : context.options.deep ? 1 : -1);
	247
	248	// if object is observable then add it to the list
	249	if (ko.isObservable(obj)) {
	250	// ensure it's validatable but don't extend validatedObservable because it
	251	// would overwrite isValid property.
	252	if (!obj.errors && !utils.isValidatable(obj)) {
	253	obj.extend({ validatable: true });
	254	}
	255	context.validatables.push(obj);
	256
	257	if (context.options.live && utils.isObservableArray(obj)) {
	258	context.subscriptions.push(obj.subscribe(function () {
	259	context.graphMonitor.valueHasMutated();
	260	}));
	261	}
	262	}
	263
	264	//get list of values either from array or object but ignore non-objects
	265	// and destroyed objects
	266	if (val && !val._destroy) {
	267	if (utils.isArray(val)) {
	268	objValues = val;
	269	}
	270	else if (utils.isObject(val)) {
	271	objValues = utils.values(val);
	272	}
	273	}
	274
	275	//process recursively if it is deep grouping
	276	if (level !== 0) {
	277	utils.forEach(objValues, function (observable) {
	278	//but not falsy things and not HTML Elements
	279	if (observable && !observable.nodeType && (!ko.isComputed(observable) \|\| observable.rules)) {
	280	traverseGraph(observable, context, level + 1);
	281	}
	282	});
	283	}
	284	}
	285
	286	function collectErrors(array) {
	287	var errors = [];
	288	forEach(array, function (observable) {
	289	// Do not collect validatedObservable errors
	290	if (utils.isValidatable(observable) && !observable.isValid()) {
	291	// Use peek because we don't want a dependency for 'error' property because it
	292	// changes before 'isValid' does. (Issue #99)
	293	errors.push(observable.error.peek());
	294	}
	295	});
	296	return errors;
	297	}
	298
	299	return {
	300	//Call this on startup
	301	//any config can be overridden with the passed in options
	302	init: function (options, force) {
	303	//done run this multiple times if we don't really want to
	304	if (isInitialized > 0 && !force) {
	305	return;
	306	}
	307
	308	//because we will be accessing options properties it has to be an object at least
	309	options = options \|\| {};
	310	//if specific error classes are not provided then apply generic errorClass
	311	//it has to be done on option so that options.errorClass can override default
	312	//errorElementClass and errorMessage class but not those provided in options
	313	options.errorElementClass = options.errorElementClass \|\| options.errorClass \|\| configuration.errorElementClass;
	314	options.errorMessageClass = options.errorMessageClass \|\| options.errorClass \|\| configuration.errorMessageClass;
	315
	316	extend(configuration, options);
	317
	318	if (configuration.registerExtenders) {
	319	kv.registerExtenders();
	320	}
	321
	322	isInitialized = 1;
	323	},
	324
	325	// resets the config back to its original state
	326	reset: kv.configuration.reset,
	327
	328	// recursively walks a viewModel and creates an object that
	329	// provides validation information for the entire viewModel
	330	// obj -> the viewModel to walk
	331	// options -> {
	332	// deep: false, // if true, will walk past the first level of viewModel properties
	333	// observable: false // if true, returns a computed observable indicating if the viewModel is valid
	334	// }
	335	group: function group(obj, options) { // array of observables or viewModel
	336	options = extend(extend({}, configuration.grouping), options);
	337
	338	var context = {
	339	options: options,
	340	graphMonitor: ko.observable(),
	341	flagged: [],
	342	subscriptions: [],
	343	validatables: []
	344	};
	345
	346	var result = null;
	347
	348	//if using observables then traverse structure once and add observables
	349	if (options.observable) {
	350	result = ko.computed(function () {
	351	context.graphMonitor(); //register dependency
	352	runTraversal(obj, context);
	353	return collectErrors(context.validatables);
	354	});
	355	}
	356	else { //if not using observables then every call to error() should traverse the structure
	357	result = function () {
	358	runTraversal(obj, context);
	359	return collectErrors(context.validatables);
	360	};
	361	}
	362
	363	result.showAllMessages = function (show) { // thanks @heliosPortal
	364	if (show === undefined) {//default to true
	365	show = true;
	366	}
	367
	368	result.forEach(function (observable) {
	369	if (utils.isValidatable(observable)) {
	370	observable.isModified(show);
	371	}
	372	});
	373	};
	374
	375	result.isAnyMessageShown = function () {
	376	var invalidAndModifiedPresent;
	377
	378	invalidAndModifiedPresent = !!result.find(function (observable) {
	379	return utils.isValidatable(observable) && !observable.isValid() && observable.isModified();
	380	});
	381	return invalidAndModifiedPresent;
	382	};
	383
	384	result.filter = function(predicate) {
	385	predicate = predicate \|\| function () { return true; };
	386	// ensure we have latest changes
	387	result();
	388
	389	return koUtils.arrayFilter(context.validatables, predicate);
	390	};
	391
	392	result.find = function(predicate) {
	393	predicate = predicate \|\| function () { return true; };
	394	// ensure we have latest changes
	395	result();
	396
	397	return koUtils.arrayFirst(context.validatables, predicate);
	398	};
	399
	400	result.forEach = function(callback) {
	401	callback = callback \|\| function () { };
	402	// ensure we have latest changes
	403	result();
	404
	405	forEach(context.validatables, callback);
	406	};
	407
	408	result.map = function(mapping) {
	409	mapping = mapping \|\| function (item) { return item; };
	410	// ensure we have latest changes
	411	result();
	412
	413	return koUtils.arrayMap(context.validatables, mapping);
	414	};
	415
	416	/**
	417	* @private You should not rely on this method being here.
	418	* It's a private method and it may change in the future.
	419	*
	420	* @description Updates the validated object and collects errors from it.
	421	*/
	422	result._updateState = function(newValue) {
	423	if (!utils.isObject(newValue)) {
	424	throw new Error('An object is required.');
	425	}
	426	obj = newValue;
	427	if (options.observable) {
	428	context.graphMonitor.valueHasMutated();
	429	}
	430	else {
	431	runTraversal(newValue, context);
	432	return collectErrors(context.validatables);
	433	}
	434	};
	435	return result;
	436	},
	437
	438	formatMessage: function (message, params, observable) {
	439	if (utils.isObject(params) && params.typeAttr) {
	440	params = params.value;
	441	}
	442	if (typeof (message) === 'function') {
	443	return message(params, observable);
	444	}
	445	var replacements = unwrap(params) \|\| [];
	446	if (!utils.isArray(replacements)) {
	447	replacements = [replacements];
	448	}
	449	return message.replace(/{(\d+)}/gi, function(match, index) {
	450	if (typeof replacements[index] !== 'undefined') {
	451	return replacements[index];
	452	}
	453	return match;
	454	});
	455	},
	456
	457	// addRule:
	458	// This takes in a ko.observable and a Rule Context - which is just a rule name and params to supply to the validator
	459	// ie: kv.addRule(myObservable, {
	460	// rule: 'required',
	461	// params: true
	462	// });
	463	//
	464	addRule: function (observable, rule) {
	465	observable.extend({ validatable: true });
	466
	467	var hasRule = !!koUtils.arrayFirst(observable.rules(), function(item) {
	468	return item.rule && item.rule === rule.rule;
	469	});
	470
	471	if (!hasRule) {
	472	//push a Rule Context to the observables local array of Rule Contexts
	473	observable.rules.push(rule);
	474	}
	475	return observable;
	476	},
	477
	478	// addAnonymousRule:
	479	// Anonymous Rules essentially have all the properties of a Rule, but are only specific for a certain property
	480	// and developers typically are wanting to add them on the fly or not register a rule with the 'kv.rules' object
	481	//
	482	// Example:
	483	// var test = ko.observable('something').extend{(
	484	// validation: {
	485	// validator: function(val, someOtherVal){
	486	// return true;
	487	// },
	488	// message: "Something must be really wrong!',
	489	// params: true
	490	// }
	491	// )};
	492	addAnonymousRule: function (observable, ruleObj) {
	493	if (ruleObj['message'] === undefined) {
	494	ruleObj['message'] = 'Error';
	495	}
	496
	497	//make sure onlyIf is honoured
	498	if (ruleObj.onlyIf) {
	499	ruleObj.condition = ruleObj.onlyIf;
	500	}
	501
	502	//add the anonymous rule to the observable
	503	kv.addRule(observable, ruleObj);
	504	},
	505
	506	addExtender: function (ruleName) {
	507	ko.extenders[ruleName] = function (observable, params) {
	508	//params can come in a few flavors
	509	// 1. Just the params to be passed to the validator
	510	// 2. An object containing the Message to be used and the Params to pass to the validator
	511	// 3. A condition when the validation rule to be applied
	512	//
	513	// Example:
	514	// var test = ko.observable(3).extend({
	515	// max: {
	516	// message: 'This special field has a Max of {0}',
	517	// params: 2,
	518	// onlyIf: function() {
	519	// return specialField.IsVisible();
	520	// }
	521	// }
	522	// )};
	523	//
	524	if (params && (params.message \|\| params.onlyIf)) { //if it has a message or condition object, then its an object literal to use
	525	return kv.addRule(observable, {
	526	rule: ruleName,
	527	message: params.message,
	528	params: utils.isEmptyVal(params.params) ? true : params.params,
	529	condition: params.onlyIf
	530	});
	531	} else {
	532	return kv.addRule(observable, {
	533	rule: ruleName,
	534	params: params
	535	});
	536	}
	537	};
	538	},
	539
	540	// loops through all kv.rules and adds them as extenders to
	541	// ko.extenders
	542	registerExtenders: function () { // root extenders optional, use 'validation' extender if would cause conflicts
	543	if (configuration.registerExtenders) {
	544	for (var ruleName in kv.rules) {
	545	if (kv.rules.hasOwnProperty(ruleName)) {
	546	if (!ko.extenders[ruleName]) {
	547	kv.addExtender(ruleName);
	548	}
	549	}
	550	}
	551	}
	552	},
	553
	554	//creates a span next to the @element with the specified error class
	555	insertValidationMessage: function (element) {
	556	var span = document.createElement('SPAN');
	557	span.className = utils.getConfigOptions(element).errorMessageClass;
	558	utils.insertAfter(element, span);
	559	return span;
	560	},
	561
	562	// if html-5 validation attributes have been specified, this parses
	563	// the attributes on @element
	564	parseInputValidationAttributes: function (element, valueAccessor) {
	565	forEach(kv.configuration.html5Attributes, function (attr) {
	566	if (utils.hasAttribute(element, attr)) {
	567
	568	var params = element.getAttribute(attr) \|\| true;
	569
	570	if (attr === 'min' \|\| attr === 'max')
	571	{
	572	// If we're validating based on the min and max attributes, we'll
	573	// need to know what the 'type' attribute is set to
	574	var typeAttr = element.getAttribute('type');
	575	if (typeof typeAttr === "undefined" \|\| !typeAttr)
	576	{
	577	// From http://www.w3.org/TR/html-markup/input:
	578	// An input element with no type attribute specified represents the
	579	// same thing as an input element with its type attribute set to "text".
	580	typeAttr = "text";
	581	}
	582	params = {typeAttr: typeAttr, value: params};
	583	}
	584
	585	kv.addRule(valueAccessor(), {
	586	rule: attr,
	587	params: params
	588	});
	589	}
	590	});
	591
	592	var currentType = element.getAttribute('type');
	593	forEach(kv.configuration.html5InputTypes, function (type) {
	594	if (type === currentType) {
	595	kv.addRule(valueAccessor(), {
	596	rule: (type === 'date') ? 'dateISO' : type,
	597	params: true
	598	});
	599	}
	600	});
	601	},
	602
	603	// writes html5 validation attributes on the element passed in
	604	writeInputValidationAttributes: function (element, valueAccessor) {
	605	var observable = valueAccessor();
	606
	607	if (!observable \|\| !observable.rules) {
	608	return;
	609	}
	610
	611	var contexts = observable.rules(); // observable array
	612
	613	// loop through the attributes and add the information needed
	614	forEach(kv.configuration.html5Attributes, function (attr) {
	615	var ctx = koUtils.arrayFirst(contexts, function (ctx) {
	616	return ctx.rule && ctx.rule.toLowerCase() === attr.toLowerCase();
	617	});
	618
	619	if (!ctx) {
	620	return;
	621	}
	622
	623	// we have a rule matching a validation attribute at this point
	624	// so lets add it to the element along with the params
	625	ko.computed({
	626	read: function() {
	627	var params = ko.unwrap(ctx.params);
	628
	629	// we have to do some special things for the pattern validation
	630	if (ctx.rule === "pattern" && params instanceof RegExp) {
	631	// we need the pure string representation of the RegExpr without the //gi stuff
	632	params = params.source;
	633	}
	634
	635	element.setAttribute(attr, params);
	636	},
	637	disposeWhenNodeIsRemoved: element
	638	});
	639	});
	640
	641	contexts = null;
	642	},
	643
	644	//take an existing binding handler and make it cause automatic validations
	645	makeBindingHandlerValidatable: function (handlerName) {
	646	var init = ko.bindingHandlers[handlerName].init;
	647
	648	ko.bindingHandlers[handlerName].init = function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
	649
	650	init(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext);
	651
	652	return ko.bindingHandlers['validationCore'].init(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext);
	653	};
	654	},
	655
	656	// visit an objects properties and apply validation rules from a definition
	657	setRules: function (target, definition) {
	658	var setRules = function (target, definition) {
	659	if (!target \|\| !definition) { return; }
	660
	661	for (var prop in definition) {
	662	if (!definition.hasOwnProperty(prop)) { continue; }
	663	var ruleDefinitions = definition[prop];
	664
	665	//check the target property exists and has a value
	666	if (!target[prop]) { continue; }
	667	var targetValue = target[prop],
	668	unwrappedTargetValue = unwrap(targetValue),
	669	rules = {},
	670	nonRules = {};
	671
	672	for (var rule in ruleDefinitions) {
	673	if (!ruleDefinitions.hasOwnProperty(rule)) { continue; }
	674	if (kv.rules[rule]) {
	675	rules[rule] = ruleDefinitions[rule];
	676	} else {
	677	nonRules[rule] = ruleDefinitions[rule];
	678	}
	679	}
	680
	681	//apply rules
	682	if (ko.isObservable(targetValue)) {
	683	targetValue.extend(rules);
	684	}
	685
	686	//then apply child rules
	687	//if it's an array, apply rules to all children
	688	if (unwrappedTargetValue && utils.isArray(unwrappedTargetValue)) {
	689	for (var i = 0; i < unwrappedTargetValue.length; i++) {
	690	setRules(unwrappedTargetValue[i], nonRules);
	691	}
	692	//otherwise, just apply to this property
	693	} else {
	694	setRules(unwrappedTargetValue, nonRules);
	695	}
	696	}
	697	};
	698	setRules(target, definition);
	699	}
	700	};
	701
	702	}());
	703
	704	// expose api publicly
	705	extend(ko.validation, api);
	706	;//Validation Rules:
	707	// You can view and override messages or rules via:
	708	// kv.rules[ruleName]
	709	//
	710	// To implement a custom Rule, simply use this template:
	711	// kv.rules['<custom rule name>'] = {
	712	// validator: function (val, param) {
	713	// <custom logic>
	714	// return <true or false>;
	715	// },
	716	// message: '<custom validation message>' //optionally you can also use a '{0}' to denote a placeholder that will be replaced with your 'param'
	717	// };
	718	//
	719	// Example:
	720	// kv.rules['mustEqual'] = {
	721	// validator: function( val, mustEqualVal ){
	722	// return val === mustEqualVal;
	723	// },
	724	// message: 'This field must equal {0}'
	725	// };
	726	//
	727	kv.rules = {};
	728	kv.rules['required'] = {
	729	validator: function (val, required) {
	730	var testVal;
	731
	732	if (val === undefined \|\| val === null) {
	733	return !required;
	734	}
	735
	736	testVal = val;
	737	if (typeof (val) === 'string') {
	738	if (String.prototype.trim) {
	739	testVal = val.trim();
	740	}
	741	else {
	742	testVal = val.replace(/^\s+\|\s+$/g, '');
	743	}
	744	}
	745
	746	if (!required) {// if they passed: { required: false }, then don't require this
	747	return true;
	748	}
	749
	750	return ((testVal + '').length > 0);
	751	},
	752	message: 'This field is required.'
	753	};
	754
	755	function minMaxValidatorFactory(validatorName) {
	756	var isMaxValidation = validatorName === "max";
	757
	758	return function (val, options) {
	759	if (kv.utils.isEmptyVal(val)) {
	760	return true;
	761	}
	762
	763	var comparisonValue, type;
	764	if (options.typeAttr === undefined) {
	765	// This validator is being called from javascript rather than
	766	// being bound from markup
	767	type = "text";
	768	comparisonValue = options;
	769	} else {
	770	type = options.typeAttr;
	771	comparisonValue = options.value;
	772	}
	773
	774	// From http://www.w3.org/TR/2012/WD-html5-20121025/common-input-element-attributes.html#attr-input-min,
	775	// if the value is parseable to a number, then the minimum should be numeric
	776	if (!isNaN(comparisonValue) && !(comparisonValue instanceof Date)) {
	777	type = "number";
	778	}
	779
	780	var regex, valMatches, comparisonValueMatches;
	781	switch (type.toLowerCase()) {
	782	case "week":
	783	regex = /^(\d{4})-W(\d{2})$/;
	784	valMatches = val.match(regex);
	785	if (valMatches === null) {
	786	throw new Error("Invalid value for " + validatorName + " attribute for week input. Should look like " +
	787	"'2000-W33' http://www.w3.org/TR/html-markup/input.week.html#input.week.attrs.min");
	788	}
	789	comparisonValueMatches = comparisonValue.match(regex);
	790	// If no regex matches were found, validation fails
	791	if (!comparisonValueMatches) {
	792	return false;
	793	}
	794
	795	if (isMaxValidation) {
	796	return (valMatches[1] < comparisonValueMatches[1]) \|\| // older year
	797	// same year, older week
	798	((valMatches[1] === comparisonValueMatches[1]) && (valMatches[2] <= comparisonValueMatches[2]));
	799	} else {
	800	return (valMatches[1] > comparisonValueMatches[1]) \|\| // newer year
	801	// same year, newer week
	802	((valMatches[1] === comparisonValueMatches[1]) && (valMatches[2] >= comparisonValueMatches[2]));
	803	}
	804	break;
	805
	806	case "month":
	807	regex = /^(\d{4})-(\d{2})$/;
	808	valMatches = val.match(regex);
	809	if (valMatches === null) {
	810	throw new Error("Invalid value for " + validatorName + " attribute for month input. Should look like " +
	811	"'2000-03' http://www.w3.org/TR/html-markup/input.month.html#input.month.attrs.min");
	812	}
	813	comparisonValueMatches = comparisonValue.match(regex);
	814	// If no regex matches were found, validation fails
	815	if (!comparisonValueMatches) {
	816	return false;
	817	}
	818
	819	if (isMaxValidation) {
	820	return ((valMatches[1] < comparisonValueMatches[1]) \|\| // older year
	821	// same year, older month
	822	((valMatches[1] === comparisonValueMatches[1]) && (valMatches[2] <= comparisonValueMatches[2])));
	823	} else {
	824	return (valMatches[1] > comparisonValueMatches[1]) \|\| // newer year
	825	// same year, newer month
	826	((valMatches[1] === comparisonValueMatches[1]) && (valMatches[2] >= comparisonValueMatches[2]));
	827	}
	828	break;
	829
	830	case "number":
	831	case "range":
	832	if (isMaxValidation) {
	833	return (!isNaN(val) && parseFloat(val) <= parseFloat(comparisonValue));
	834	} else {
	835	return (!isNaN(val) && parseFloat(val) >= parseFloat(comparisonValue));
	836	}
	837	break;
	838
	839	default:
	840	if (isMaxValidation) {
	841	return val <= comparisonValue;
	842	} else {
	843	return val >= comparisonValue;
	844	}
	845	}
	846	};
	847	}
	848
	849	kv.rules['min'] = {
	850	validator: minMaxValidatorFactory("min"),
	851	message: 'Please enter a value greater than or equal to {0}.'
	852	};
	853
	854	kv.rules['max'] = {
	855	validator: minMaxValidatorFactory("max"),
	856	message: 'Please enter a value less than or equal to {0}.'
	857	};
	858
	859	kv.rules['minLength'] = {
	860	validator: function (val, minLength) {
	861	if(kv.utils.isEmptyVal(val)) { return true; }
	862	var normalizedVal = kv.utils.isNumber(val) ? ('' + val) : val;
	863	return normalizedVal.length >= minLength;
	864	},
	865	message: 'Please enter at least {0} characters.'
	866	};
	867
	868	kv.rules['maxLength'] = {
	869	validator: function (val, maxLength) {
	870	if(kv.utils.isEmptyVal(val)) { return true; }
	871	var normalizedVal = kv.utils.isNumber(val) ? ('' + val) : val;
	872	return normalizedVal.length <= maxLength;
	873	},
	874	message: 'Please enter no more than {0} characters.'
	875	};
	876
	877	kv.rules['pattern'] = {
	878	validator: function (val, regex) {
	879	return kv.utils.isEmptyVal(val) \|\| val.toString().match(regex) !== null;
	880	},
	881	message: 'Please check this value.'
	882	};
	883
	884	kv.rules['step'] = {
	885	validator: function (val, step) {
	886
	887	// in order to handle steps of .1 & .01 etc.. Modulus won't work
	888	// if the value is a decimal, so we have to correct for that
	889	if (kv.utils.isEmptyVal(val) \|\| step === 'any') { return true; }
	890	var dif = (val * 100) % (step * 100);
	891	return Math.abs(dif) < 0.00001 \|\| Math.abs(1 - dif) < 0.00001;
	892	},
	893	message: 'The value must increment by {0}.'
	894	};
	895
	896	kv.rules['email'] = {
	897	validator: function (val, validate) {
	898	if (!validate) { return true; }
	899
	900	//I think an empty email address is also a valid entry
	901	//if one want's to enforce entry it should be done with 'required: true'
	902	return kv.utils.isEmptyVal(val) \|\| (
	903	// jquery validate regex - thanks Scott Gonzalez
	904	validate && /^((([a-z]\|\d\|[!#\$%&'\\+\-\/=\?\^_`{\\|}~]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]\|\d\|[!#\$%&'\\+\-\/=\?\^_`{\\|}~]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+))\|((\x22)((((\x20\|\x09)(\x0d\x0a))?(\x20\|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]\|\x21\|[\x23-\x5b]\|[\x5d-\x7e]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])\|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))(((\x20\|\x09)(\x0d\x0a))?(\x20\|\x09)+)?(\x22)))@((([a-z]\|\d\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])\|(([a-z]\|\d\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]\|\d\|-\|\.\|_\|~\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]\|\d\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])\|(([a-z]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]\|\d\|-\|\.\|_\|~\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]\|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i.test(val)
	905	);
	906	},
	907	message: 'Please enter a proper email address.'
	908	};
	909
	910	kv.rules['date'] = {
	911	validator: function (value, validate) {
	912	if (!validate) { return true; }
	913	return kv.utils.isEmptyVal(value) \|\| (validate && !/Invalid\|NaN/.test(new Date(value)));
	914	},
	915	message: 'Please enter a proper date.'
	916	};
	917
	918	kv.rules['dateISO'] = {
	919	validator: function (value, validate) {
	920	if (!validate) { return true; }
	921	return kv.utils.isEmptyVal(value) \|\| (validate && /^\d{4}[-/](?:0?[1-9]\|1[012])[-/](?:0?[1-9]\|[12][0-9]\|3[01])$/.test(value));
	922	},
	923	message: 'Please enter a proper date.'
	924	};
	925
	926	kv.rules['number'] = {
	927	validator: function (value, validate) {
	928	if (!validate) { return true; }
	929	return kv.utils.isEmptyVal(value) \|\| (validate && /^-?(?:\d+\|\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(value));
	930	},
	931	message: 'Please enter a number.'
	932	};
	933
	934	kv.rules['digit'] = {
	935	validator: function (value, validate) {
	936	if (!validate) { return true; }
	937	return kv.utils.isEmptyVal(value) \|\| (validate && /^\d+$/.test(value));
	938	},
	939	message: 'Please enter a digit.'
	940	};
	941
	942	kv.rules['phoneUS'] = {
	943	validator: function (phoneNumber, validate) {
	944	if (!validate) { return true; }
	945	if (kv.utils.isEmptyVal(phoneNumber)) { return true; } // makes it optional, use 'required' rule if it should be required
	946	if (typeof (phoneNumber) !== 'string') { return false; }
	947	phoneNumber = phoneNumber.replace(/\s+/g, "");
	948	return validate && phoneNumber.length > 9 && phoneNumber.match(/^(1-?)?(\([2-9]\d{2}\)\|[2-9]\d{2})-?[2-9]\d{2}-?\d{4}$/);
	949	},
	950	message: 'Please specify a valid phone number.'
	951	};
	952
	953	kv.rules['equal'] = {
	954	validator: function (val, params) {
	955	var otherValue = params;
	956	return val === kv.utils.getValue(otherValue);
	957	},
	958	message: 'Values must equal.'
	959	};
	960
	961	kv.rules['notEqual'] = {
	962	validator: function (val, params) {
	963	var otherValue = params;
	964	return val !== kv.utils.getValue(otherValue);
	965	},
	966	message: 'Please choose another value.'
	967	};
	968
	969	//unique in collection
	970	// options are:
	971	// collection: array or function returning (observable) array
	972	// in which the value has to be unique
	973	// valueAccessor: function that returns value from an object stored in collection
	974	// if it is null the value is compared directly
	975	// external: set to true when object you are validating is automatically updating collection
	976	kv.rules['unique'] = {
	977	validator: function (val, options) {
	978	var c = kv.utils.getValue(options.collection),
	979	external = kv.utils.getValue(options.externalValue),
	980	counter = 0;
	981
	982	if (!val \|\| !c) { return true; }
	983
	984	koUtils.arrayFilter(c, function (item) {
	985	if (val === (options.valueAccessor ? options.valueAccessor(item) : item)) { counter++; }
	986	});
	987	// if value is external even 1 same value in collection means the value is not unique
	988	return counter < (!!external ? 1 : 2);
	989	},
	990	message: 'Please make sure the value is unique.'
	991	};
	992
	993
	994	//now register all of these!
	995	(function () {
	996	kv.registerExtenders();
	997	}());
	998	;// The core binding handler
	999	// this allows us to setup any value binding that internally always
	1000	// performs the same functionality
	1001	ko.bindingHandlers['validationCore'] = (function () {
	1002
	1003	return {
	1004	init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
	1005	var config = kv.utils.getConfigOptions(element);
	1006	var observable = valueAccessor();
	1007
	1008	// parse html5 input validation attributes, optional feature
	1009	if (config.parseInputAttributes) {
	1010	kv.utils.async(function () { kv.parseInputValidationAttributes(element, valueAccessor); });
	1011	}
	1012
	1013	// if requested insert message element and apply bindings
	1014	if (config.insertMessages && kv.utils.isValidatable(observable)) {
	1015
	1016	// insert the <span></span>
	1017	var validationMessageElement = kv.insertValidationMessage(element);
	1018
	1019	// if we're told to use a template, make sure that gets rendered
	1020	if (config.messageTemplate) {
	1021	ko.renderTemplate(config.messageTemplate, { field: observable }, null, validationMessageElement, 'replaceNode');
	1022	} else {
	1023	ko.applyBindingsToNode(validationMessageElement, { validationMessage: observable });
	1024	}
	1025	}
	1026
	1027	// write the html5 attributes if indicated by the config
	1028	if (config.writeInputAttributes && kv.utils.isValidatable(observable)) {
	1029
	1030	kv.writeInputValidationAttributes(element, valueAccessor);
	1031	}
	1032
	1033	// if requested, add binding to decorate element
	1034	if (config.decorateInputElement && kv.utils.isValidatable(observable)) {
	1035	ko.applyBindingsToNode(element, { validationElement: observable });
	1036	}
	1037	}
	1038	};
	1039
	1040	}());
	1041
	1042	// override for KO's default 'value', 'checked', 'textInput' and selectedOptions bindings
	1043	kv.makeBindingHandlerValidatable("value");
	1044	kv.makeBindingHandlerValidatable("checked");
	1045	if (ko.bindingHandlers.textInput) {
	1046	kv.makeBindingHandlerValidatable("textInput");
	1047	}
	1048	kv.makeBindingHandlerValidatable("selectedOptions");
	1049
	1050
	1051	ko.bindingHandlers['validationMessage'] = { // individual error message, if modified or post binding
	1052	update: function (element, valueAccessor) {
	1053	var obsv = valueAccessor(),
	1054	config = kv.utils.getConfigOptions(element),
	1055	val = unwrap(obsv),
	1056	msg = null,
	1057	isModified = false,
	1058	isValid = false;
	1059
	1060	if (obsv === null \|\| typeof obsv === 'undefined') {
	1061	throw new Error('Cannot bind validationMessage to undefined value. data-bind expression: ' +
	1062	element.getAttribute('data-bind'));
	1063	}
	1064
	1065	if (!obsv.isValid \|\| !obsv.isModified) {
	1066	throw new Error("Observable is not validatable");
	1067	}
	1068
	1069	isModified = obsv.isModified();
	1070	isValid = obsv.isValid();
	1071
	1072	var error = null;
	1073	if (!config.messagesOnModified \|\| isModified) {
	1074	error = isValid ? null : obsv.error;
	1075	}
	1076
	1077	var isVisible = !config.messagesOnModified \|\| isModified ? !isValid : false;
	1078	var isCurrentlyVisible = element.style.display !== "none";
	1079
	1080	if (config.allowHtmlMessages) {
	1081	koUtils.setHtml(element, error);
	1082	} else {
	1083	ko.bindingHandlers.text.update(element, function () { return error; });
	1084	}
	1085
	1086	if (isCurrentlyVisible && !isVisible) {
	1087	element.style.display = 'none';
	1088	} else if (!isCurrentlyVisible && isVisible) {
	1089	element.style.display = '';
	1090	}
	1091	}
	1092	};
	1093
	1094	ko.bindingHandlers['validationElement'] = {
	1095	update: function (element, valueAccessor, allBindingsAccessor) {
	1096	var obsv = valueAccessor(),
	1097	config = kv.utils.getConfigOptions(element),
	1098	val = unwrap(obsv),
	1099	msg = null,
	1100	isModified = false,
	1101	isValid = false;
	1102
	1103	if (obsv === null \|\| typeof obsv === 'undefined') {
	1104	throw new Error('Cannot bind validationElement to undefined value. data-bind expression: ' +
	1105	element.getAttribute('data-bind'));
	1106	}
	1107
	1108	if (!obsv.isValid \|\| !obsv.isModified) {
	1109	throw new Error("Observable is not validatable");
	1110	}
	1111
	1112	isModified = obsv.isModified();
	1113	isValid = obsv.isValid();
	1114
	1115	// create an evaluator function that will return something like:
	1116	// css: { validationElement: true }
	1117	var cssSettingsAccessor = function () {
	1118	var css = {};
	1119
	1120	var shouldShow = ((!config.decorateElementOnModified \|\| isModified) ? !isValid : false);
	1121
	1122	// css: { validationElement: false }
	1123	css[config.errorElementClass] = shouldShow;
	1124
	1125	return css;
	1126	};
	1127
	1128	//add or remove class on the element;
	1129	ko.bindingHandlers.css.update(element, cssSettingsAccessor, allBindingsAccessor);
	1130	if (!config.errorsAsTitle) { return; }
	1131
	1132	ko.bindingHandlers.attr.update(element, function () {
	1133	var
	1134	hasModification = !config.errorsAsTitleOnModified \|\| isModified,
	1135	title = kv.utils.getOriginalElementTitle(element);
	1136
	1137	if (hasModification && !isValid) {
	1138	return { title: obsv.error, 'data-orig-title': title };
	1139	} else if (!hasModification \|\| isValid) {
	1140	return { title: title, 'data-orig-title': null };
	1141	}
	1142	});
	1143	}
	1144	};
	1145
	1146	// ValidationOptions:
	1147	// This binding handler allows you to override the initial config by setting any of the options for a specific element or context of elements
	1148	//
	1149	// Example:
	1150	// <div data-bind="validationOptions: { insertMessages: true, messageTemplate: 'customTemplate', errorMessageClass: 'mySpecialClass'}">
	1151	// <input type="text" data-bind="value: someValue"/>
	1152	// <input type="text" data-bind="value: someValue2"/>
	1153	// </div>
	1154	ko.bindingHandlers['validationOptions'] = (function () {
	1155	return {
	1156	init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
	1157	var options = unwrap(valueAccessor());
	1158	if (options) {
	1159	var newConfig = extend({}, kv.configuration);
	1160	extend(newConfig, options);
	1161
	1162	//store the validation options on the node so we can retrieve it later
	1163	kv.utils.setDomData(element, newConfig);
	1164	}
	1165	}
	1166	};
	1167	}());
	1168	;// Validation Extender:
	1169	// This is for creating custom validation logic on the fly
	1170	// Example:
	1171	// var test = ko.observable('something').extend{(
	1172	// validation: {
	1173	// validator: function(val, someOtherVal){
	1174	// return true;
	1175	// },
	1176	// message: "Something must be really wrong!',
	1177	// params: true
	1178	// }
	1179	// )};
	1180	ko.extenders['validation'] = function (observable, rules) { // allow single rule or array
	1181	forEach(kv.utils.isArray(rules) ? rules : [rules], function (rule) {
	1182	// the 'rule' being passed in here has no name to identify a core Rule,
	1183	// so we add it as an anonymous rule
	1184	// If the developer is wanting to use a core Rule, but use a different message see the 'addExtender' logic for examples
	1185	kv.addAnonymousRule(observable, rule);
	1186	});
	1187	return observable;
	1188	};
	1189
	1190	//This is the extender that makes a Knockout Observable also 'Validatable'
	1191	//examples include:
	1192	// 1. var test = ko.observable('something').extend({validatable: true});
	1193	// this will ensure that the Observable object is setup properly to respond to rules
	1194	//
	1195	// 2. test.extend({validatable: false});
	1196	// this will remove the validation properties from the Observable object should you need to do that.
	1197	ko.extenders['validatable'] = function (observable, options) {
	1198	if (!kv.utils.isObject(options)) {
	1199	options = { enable: options };
	1200	}
	1201
	1202	if (!('enable' in options)) {
	1203	options.enable = true;
	1204	}
	1205
	1206	if (options.enable && !kv.utils.isValidatable(observable)) {
	1207	var config = kv.configuration.validate \|\| {};
	1208	var validationOptions = {
	1209	throttleEvaluation : options.throttle \|\| config.throttle
	1210	};
	1211
	1212	observable.error = ko.observable(null); // holds the error message, we only need one since we stop processing validators when one is invalid
	1213
	1214	// observable.rules:
	1215	// ObservableArray of Rule Contexts, where a Rule Context is simply the name of a rule and the params to supply to it
	1216	//
	1217	// Rule Context = { rule: '<rule name>', params: '<passed in params>', message: '<Override of default Message>' }
	1218	observable.rules = ko.observableArray(); //holds the rule Contexts to use as part of validation
	1219
	1220	//in case async validation is occurring
	1221	observable.isValidating = ko.observable(false);
	1222
	1223	//the true holder of whether the observable is valid or not
	1224	observable.__valid__ = ko.observable(true);
	1225
	1226	observable.isModified = ko.observable(false);
	1227
	1228	// a semi-protected observable
	1229	observable.isValid = ko.computed(observable.__valid__);
	1230
	1231	//manually set error state
	1232	observable.setError = function (error) {
	1233	var previousError = observable.error.peek();
	1234	var previousIsValid = observable.__valid__.peek();
	1235
	1236	observable.error(error);
	1237	observable.__valid__(false);
	1238
	1239	if (previousError !== error && !previousIsValid) {
	1240	// if the observable was not valid before then isValid will not mutate,
	1241	// hence causing any grouping to not display the latest error.
	1242	observable.isValid.notifySubscribers();
	1243	}
	1244	};
	1245
	1246	//manually clear error state
	1247	observable.clearError = function () {
	1248	observable.error(null);
	1249	observable.__valid__(true);
	1250	return observable;
	1251	};
	1252
	1253	//subscribe to changes in the observable
	1254	var h_change = observable.subscribe(function () {
	1255	observable.isModified(true);
	1256	});
	1257
	1258	// we use a computed here to ensure that anytime a dependency changes, the
	1259	// validation logic evaluates
	1260	var h_obsValidationTrigger = ko.computed(extend({
	1261	read: function () {
	1262	var obs = observable(),
	1263	ruleContexts = observable.rules();
	1264
	1265	kv.validateObservable(observable);
	1266
	1267	return true;
	1268	}
	1269	}, validationOptions));
	1270
	1271	extend(h_obsValidationTrigger, validationOptions);
	1272
	1273	observable._disposeValidation = function () {
	1274	//first dispose of the subscriptions
	1275	observable.isValid.dispose();
	1276	observable.rules.removeAll();
	1277	if (observable.isModified.getSubscriptionsCount() > 0) {
	1278	observable.isModified._subscriptions['change'] = [];
	1279	}
	1280	if (observable.isValidating.getSubscriptionsCount() > 0) {
	1281	observable.isValidating._subscriptions['change'] = [];
	1282	}
	1283	if (observable.__valid__.getSubscriptionsCount() > 0) {
	1284	observable.__valid__._subscriptions['change'] = [];
	1285	}
	1286	h_change.dispose();
	1287	h_obsValidationTrigger.dispose();
	1288
	1289	delete observable['rules'];
	1290	delete observable['error'];
	1291	delete observable['isValid'];
	1292	delete observable['isValidating'];
	1293	delete observable['__valid__'];
	1294	delete observable['isModified'];
	1295	};
	1296	} else if (options.enable === false && observable._disposeValidation) {
	1297	observable._disposeValidation();
	1298	}
	1299	return observable;
	1300	};
	1301
	1302	function validateSync(observable, rule, ctx) {
	1303	//Execute the validator and see if its valid
	1304	if (!rule.validator(observable(), (ctx.params === undefined ? true : unwrap(ctx.params)))) { // default param is true, eg. required = true
	1305
	1306	//not valid, so format the error message and stick it in the 'error' variable
	1307	observable.setError(kv.formatMessage(
	1308	ctx.message \|\| rule.message,
	1309	unwrap(ctx.params),
	1310	observable));
	1311	return false;
	1312	} else {
	1313	return true;
	1314	}
	1315	}
	1316
	1317	function validateAsync(observable, rule, ctx) {
	1318	observable.isValidating(true);
	1319
	1320	var callBack = function (valObj) {
	1321	var isValid = false,
	1322	msg = '';
	1323
	1324	if (!observable.__valid__()) {
	1325
	1326	// since we're returning early, make sure we turn this off
	1327	observable.isValidating(false);
	1328
	1329	return; //if its already NOT valid, don't add to that
	1330	}
	1331
	1332	//we were handed back a complex object
	1333	if (valObj['message']) {
	1334	isValid = valObj.isValid;
	1335	msg = valObj.message;
	1336	} else {
	1337	isValid = valObj;
	1338	}
	1339
	1340	if (!isValid) {
	1341	//not valid, so format the error message and stick it in the 'error' variable
	1342	observable.error(kv.formatMessage(
	1343	msg \|\| ctx.message \|\| rule.message,
	1344	unwrap(ctx.params),
	1345	observable));
	1346	observable.__valid__(isValid);
	1347	}
	1348
	1349	// tell it that we're done
	1350	observable.isValidating(false);
	1351	};
	1352
	1353	//fire the validator and hand it the callback
	1354	rule.validator(observable(), unwrap(ctx.params \|\| true), callBack);
	1355	}
	1356
	1357	kv.validateObservable = function (observable) {
	1358	var i = 0,
	1359	rule, // the rule validator to execute
	1360	ctx, // the current Rule Context for the loop
	1361	ruleContexts = observable.rules(), //cache for iterator
	1362	len = ruleContexts.length; //cache for iterator
	1363
	1364	for (; i < len; i++) {
	1365
	1366	//get the Rule Context info to give to the core Rule
	1367	ctx = ruleContexts[i];
	1368
	1369	// checks an 'onlyIf' condition
	1370	if (ctx.condition && !ctx.condition()) {
	1371	continue;
	1372	}
	1373
	1374	//get the core Rule to use for validation
	1375	rule = ctx.rule ? kv.rules[ctx.rule] : ctx;
	1376
	1377	if (rule['async'] \|\| ctx['async']) {
	1378	//run async validation
	1379	validateAsync(observable, rule, ctx);
	1380
	1381	} else {
	1382	//run normal sync validation
	1383	if (!validateSync(observable, rule, ctx)) {
	1384	return false; //break out of the loop
	1385	}
	1386	}
	1387	}
	1388	//finally if we got this far, make the observable valid again!
	1389	observable.clearError();
	1390	return true;
	1391	};
	1392	;
	1393	var _locales = {};
	1394	var _currentLocale;
	1395
	1396	kv.defineLocale = function(name, values) {
	1397	if (name && values) {
	1398	_locales[name.toLowerCase()] = values;
	1399	return values;
	1400	}
	1401	return null;
	1402	};
	1403
	1404	kv.locale = function(name) {
	1405	if (name) {
	1406	name = name.toLowerCase();
	1407
	1408	if (_locales.hasOwnProperty(name)) {
	1409	kv.localize(_locales[name]);
	1410	_currentLocale = name;
	1411	}
	1412	else {
	1413	throw new Error('Localization ' + name + ' has not been loaded.');
	1414	}
	1415	}
	1416	return _currentLocale;
	1417	};
	1418
	1419	//quick function to override rule messages
	1420	kv.localize = function (msgTranslations) {
	1421	var rules = kv.rules;
	1422
	1423	//loop the properties in the object and assign the msg to the rule
	1424	for (var ruleName in msgTranslations) {
	1425	if (rules.hasOwnProperty(ruleName)) {
	1426	rules[ruleName].message = msgTranslations[ruleName];
	1427	}
	1428	}
	1429	};
	1430
	1431	// Populate default locale (this will make en-US.js somewhat redundant)
	1432	(function() {
	1433	var localeData = {};
	1434	var rules = kv.rules;
	1435
	1436	for (var ruleName in rules) {
	1437	if (rules.hasOwnProperty(ruleName)) {
	1438	localeData[ruleName] = rules[ruleName].message;
	1439	}
	1440	}
	1441	kv.defineLocale('en-us', localeData);
	1442	})();
	1443
	1444	// No need to invoke locale because the messages are already defined along with the rules for en-US
	1445	_currentLocale = 'en-us';
	1446	;/**
	1447	* Possible invocations:
	1448	* applyBindingsWithValidation(viewModel)
	1449	* applyBindingsWithValidation(viewModel, options)
	1450	* applyBindingsWithValidation(viewModel, rootNode)
	1451	* applyBindingsWithValidation(viewModel, rootNode, options)
	1452	*/
	1453	ko.applyBindingsWithValidation = function (viewModel, rootNode, options) {
	1454	var node = document.body,
	1455	config;
	1456
	1457	if (rootNode && rootNode.nodeType) {
	1458	node = rootNode;
	1459	config = options;
	1460	}
	1461	else {
	1462	config = rootNode;
	1463	}
	1464
	1465	kv.init();
	1466
	1467	if (config) {
	1468	config = extend(extend({}, kv.configuration), config);
	1469	kv.utils.setDomData(node, config);
	1470	}
	1471
	1472	ko.applyBindings(viewModel, node);
	1473	};
	1474
	1475	//override the original applyBindings so that we can ensure all new rules and what not are correctly registered
	1476	var origApplyBindings = ko.applyBindings;
	1477	ko.applyBindings = function (viewModel, rootNode) {
	1478
	1479	kv.init();
	1480
	1481	origApplyBindings(viewModel, rootNode);
	1482	};
	1483
	1484	ko.validatedObservable = function (initialValue, options) {
	1485	if (!options && !kv.utils.isObject(initialValue)) {
	1486	return ko.observable(initialValue).extend({ validatable: true });
	1487	}
	1488
	1489	var obsv = ko.observable(initialValue);
	1490	obsv.errors = kv.group(kv.utils.isObject(initialValue) ? initialValue : {}, options);
	1491	obsv.isValid = ko.observable(obsv.errors().length === 0);
	1492
	1493	if (ko.isObservable(obsv.errors)) {
	1494	obsv.errors.subscribe(function(errors) {
	1495	obsv.isValid(errors.length === 0);
	1496	});
	1497	}
	1498	else {
	1499	ko.computed(obsv.errors).subscribe(function (errors) {
	1500	obsv.isValid(errors.length === 0);
	1501	});
	1502	}
	1503
	1504	obsv.subscribe(function(newValue) {
	1505	if (!kv.utils.isObject(newValue)) {
	1506	/*
	1507	* The validation group works on objects.
	1508	* Since the new value is a primitive (scalar, null or undefined) we need
	1509	* to create an empty object to pass along.
	1510	*/
	1511	newValue = {};
	1512	}
	1513	// Force the group to refresh
	1514	obsv.errors._updateState(newValue);
	1515	obsv.isValid(obsv.errors().length === 0);
	1516	});
	1517
	1518	return obsv;
	1519	};
	1520	;}));