Proyectos de Subversion LeadersLinked - Antes de SPA

/*! JsRender v1.0.7: http://jsviews.com/#jsrender */

/*! **VERSION FOR WEB** (For NODE.JS see http://jsviews.com/download/jsrender-node.js) */

/*

 * Best-of-breed templating in browser or on Node.js.

 * Does not require jQuery, or HTML DOM

 * Integrates with JsViews (http://jsviews.com/#jsviews)

 *

 * Copyright 2020, Boris Moore

 * Released under the MIT License.

 */

//jshint -W018, -W041, -W120

(function(factory, global) {

	// global var is the this object, which is window when running in the usual browser environment

	var $ = global.jQuery;

	if (typeof exports === "object") { // CommonJS e.g. Browserify

		module.exports = $

			? factory(global, $)

			: function($) { // If no global jQuery, take optional jQuery passed as parameter: require('jsrender')(jQuery)

				if ($ && !$.fn) {

					throw "Provide jQuery or null";

				}

				return factory(global, $);

			};

	} else if (typeof define === "function" && define.amd) { // AMD script loader, e.g. RequireJS

		define(function() {

			return factory(global);

		});

	} else { // Browser using plain <script> tag

		factory(global, false);

	}

} (

// factory (for jsrender.js)

function(global, $) {

"use strict";

//========================== Top-level vars ==========================

// global var is the this object, which is window when running in the usual browser environment

var setGlobals = $ === false; // Only set globals if script block in browser (not AMD and not CommonJS)

$ = $ && $.fn ? $ : global.jQuery; // $ is jQuery passed in by CommonJS loader (Browserify), or global jQuery.

var versionNumber = "v1.0.7",

	jsvStoreName, rTag, rTmplString, topView, $views, $expando,

	_ocp = "_ocp",      // Observable contextual parameter

	$isFunction, $isArray, $templates, $converters, $helpers, $tags, $sub, $subSettings, $subSettingsAdvanced, $viewsSettings,

	delimOpenChar0, delimOpenChar1, delimCloseChar0, delimCloseChar1, linkChar, setting, baseOnError,

	isRenderCall,

	rNewLine = /[ \t]*(\r\n|\n|\r)/g,

	rUnescapeQuotes = /\\(['"\\])/g, // Unescape quotes and trim

	rEscapeQuotes = /['"\\]/g, // Escape quotes and \ character

	rBuildHash = /(?:\x08|^)(onerror:)?(?:(~?)(([\w$.]+):)?([^\x08]+))\x08(,)?([^\x08]+)/gi,

	rTestElseIf = /^if\s/,

	rFirstElem = /<(\w+)[>\s]/,

	rAttrEncode = /[\x00`><"'&=]/g, // Includes > encoding since rConvertMarkers in JsViews does not skip > characters in attribute strings

	rIsHtml = /[\x00`><\"'&=]/,

	rHasHandlers = /^on[A-Z]|^convert(Back)?$/,

	rWrappedInViewMarker = /^\#\d+_`[\s\S]*\/\d+_`$/,

	rHtmlEncode = rAttrEncode,

	rDataEncode = /[&<>]/g,

	rDataUnencode = /&(amp|gt|lt);/g,

	rBracketQuote = /\[['"]?|['"]?\]/g,

	viewId = 0,

	charEntities = {

		"&": "&",

		"<": "&lt;",

		">": ">",

		"\x00": "�",

		"'": "'",

		'"': """,

		"`": "`",

		"=": "="

	},

	charsFromEntities = {

		amp: "&",

		gt: ">",

		lt: "<"

	},

	HTML = "html",

	OBJECT = "object",

	tmplAttr = "data-jsv-tmpl",

	jsvTmpl = "jsvTmpl",

	indexStr = "For #index in nested block use #getIndex().",

	cpFnStore = {},     // Compiled furnctions for computed values in template expressions (properties, methods, helpers)

	$render = {},

	jsr = global.jsrender,

	jsrToJq = jsr && $ && !$.render, // JsRender already loaded, without jQuery. but we will re-load it now to attach to jQuery

	jsvStores = {

		template: {

			compile: compileTmpl

		},

		tag: {

			compile: compileTag

		},

		viewModel: {

			compile: compileViewModel

		},

		helper: {},

		converter: {}

	};

	// views object ($.views if jQuery is loaded, jsrender.views if no jQuery, e.g. in Node.js)

	$views = {

		jsviews: versionNumber,

		sub: {

			// subscription, e.g. JsViews integration

			rPath: /^(!*?)(?:null|true|false|\d[\d.]*|([\w$]+|\.|~([\w$]+)|#(view|([\w$]+))?)([\w$.^]*?)(?:[.[^]([\w$]+)\]?)?)$/g,

			//        not                               object     helper    view  viewProperty pathTokens      leafToken

			rPrm: /(\()(?=\s*\()|(?:([([])\s*)?(?:(\^?)(~?[\w$.^]+)?\s*((\+\+|--)|\+|-|~(?![\w$])|&&|\|\||===|!==|==|!=|<=|>=|[<>%*:?\/]|(=))\s*|(!*?(@)?[#~]?[\w$.^]+)([([])?)|(,\s*)|(?:(\()\s*)?\\?(?:(')|("))|(?:\s*(([)\]])(?=[.^]|\s*$|[^([])|[)\]])([([]?))|(\s+)/g,

			//   lftPrn0           lftPrn         bound     path               operator     err                                          eq      path2 late            prn      comma  lftPrn2          apos quot        rtPrn  rtPrnDot                  prn2     space

			View: View,

			Err: JsViewsError,

			tmplFn: tmplFn,

			parse: parseParams,

			extend: $extend,

			extendCtx: extendCtx,

			syntaxErr: syntaxError,

			onStore: {

				template: function(name, item) {

					if (item === null) {

						delete $render[name];

					} else if (name) {

						$render[name] = item;

					}

				}

			},

			addSetting: addSetting,

			settings: {

				allowCode: false

			},

			advSet: noop, // Update advanced settings

			_thp: tagHandlersFromProps,

			_gm: getMethod,

			_tg: function() {}, // Constructor for tagDef

			_cnvt: convertVal,

			_tag: renderTag,

			_er: error,

			_err: onRenderError,

			_cp: retVal, // Get observable contextual parameters (or properties) ~foo=expr. In JsRender, simply returns val.

			_sq: function(token) {

				if (token === "constructor") {

					syntaxError("");

				}

				return token;

			}

		},

		settings: {

			delimiters: $viewsDelimiters,

			advanced: function(value) {

				return value

					? (

							$extend($subSettingsAdvanced, value),

							$sub.advSet(),

							$viewsSettings

						)

						: $subSettingsAdvanced;

				}

		},

		map: dataMap // If jsObservable loaded first, use that definition of dataMap

	};

function getDerivedMethod(baseMethod, method) {

	return function() {

		var ret,

			tag = this,

			prevBase = tag.base;

		tag.base = baseMethod; // Within method call, calling this.base will call the base method

		ret = method.apply(tag, arguments); // Call the method

		tag.base = prevBase; // Replace this.base to be the base method of the previous call, for chained calls

		return ret;

	};

}

function getMethod(baseMethod, method) {

	// For derived methods (or handlers declared declaratively as in {{:foo onChange=~fooChanged}} replace by a derived method, to allow using this.base(...)

	// or this.baseApply(arguments) to call the base implementation. (Equivalent to this._super(...) and this._superApply(arguments) in jQuery UI)

	if ($isFunction(method)) {

		method = getDerivedMethod(

				!baseMethod

					? noop // no base method implementation, so use noop as base method

					: baseMethod._d

						? baseMethod // baseMethod is a derived method, so use it

						: getDerivedMethod(noop, baseMethod), // baseMethod is not derived so make its base method be the noop method

				method

			);

		method._d = (baseMethod && baseMethod._d || 0) + 1; // Add flag for derived method (incremented for derived of derived...)

	}

	return method;

}

function tagHandlersFromProps(tag, tagCtx) {

	var prop,

		props = tagCtx.props;

	for (prop in props) {

		if (rHasHandlers.test(prop) && !(tag[prop] && tag[prop].fix)) { // Don't override handlers with fix expando (used in datepicker and spinner)

			tag[prop] = prop !== "convert" ? getMethod(tag.constructor.prototype[prop], props[prop]) : props[prop];

			// Copy over the onFoo props, convert and convertBack from tagCtx.props to tag (overrides values in tagDef).

			// Note: unsupported scenario: if handlers are dynamically added ^onFoo=expression this will work, but dynamically removing will not work.

		}

	}

}

function retVal(val) {

	return val;

}

function noop() {

	return "";

}

function dbgBreak(val) {

	// Usage examples: {{dbg:...}}, {{:~dbg(...)}}, {{dbg .../}}, {^{for ... onAfterLink=~dbg}} etc.

	try {

		console.log("JsRender dbg breakpoint: " + val);

		throw "dbg breakpoint"; // To break here, stop on caught exceptions.

	}

	catch (e) {}

	return this.base ? this.baseApply(arguments) : val;

}

function JsViewsError(message) {

	// Error exception type for JsViews/JsRender

	// Override of $.views.sub.Error is possible

	this.name = ($.link ? "JsViews" : "JsRender") + " Error";

	this.message = message || this.name;

}

function $extend(target, source) {

	if (target) {

		for (var name in source) {

			target[name] = source[name];

		}

		return target;

	}

}

(JsViewsError.prototype = new Error()).constructor = JsViewsError;

//========================== Top-level functions ==========================

//===================

// views.delimiters

//===================

	/**

	* Set the tag opening and closing delimiters and 'link' character. Default is "{{", "}}" and "^"

	* openChars, closeChars: opening and closing strings, each with two characters

	* $.views.settings.delimiters(...)

	*

	* @param {string}   openChars

	* @param {string}   [closeChars]

	* @param {string}   [link]

	* @returns {Settings}

	*

	* Get delimiters

	* delimsArray = $.views.settings.delimiters()

	*

	* @returns {string[]}

	*/

function $viewsDelimiters(openChars, closeChars, link) {

	if (!openChars) {

		return $subSettings.delimiters;

	}

	if ($isArray(openChars)) {

		return $viewsDelimiters.apply($views, openChars);

	}

	linkChar = link ? link[0] : linkChar;

	if (!/^(\W|_){5}$/.test(openChars + closeChars + linkChar)) {

		error("Invalid delimiters"); // Must be non-word characters, and openChars and closeChars must each be length 2

	}

	delimOpenChar0 = openChars[0];

	delimOpenChar1 = openChars[1];

	delimCloseChar0 = closeChars[0];

	delimCloseChar1 = closeChars[1];

	$subSettings.delimiters = [delimOpenChar0 + delimOpenChar1, delimCloseChar0 + delimCloseChar1, linkChar];

	// Escape the characters - since they could be regex special characters

	openChars = "\\" + delimOpenChar0 + "(\\" + linkChar + ")?\\" + delimOpenChar1; // Default is "{^{"

	closeChars = "\\" + delimCloseChar0 + "\\" + delimCloseChar1;                   // Default is "}}"

	// Build regex with new delimiters

	//          [tag    (followed by / space or })  or cvtr+colon or html or code] followed by space+params then convertBack?

	rTag = "(?:(\\w+(?=[\\/\\s\\" + delimCloseChar0 + "]))|(\\w+)?(:)|(>)|(\\*))\\s*((?:[^\\"

		+ delimCloseChar0 + "]|\\" + delimCloseChar0 + "(?!\\" + delimCloseChar1 + "))*?)";

	// Make rTag available to JsViews (or other components) for parsing binding expressions

	$sub.rTag = "(?:" + rTag + ")";

	//                        { ^? {   tag+params slash?  or closingTag                                                   or comment

	rTag = new RegExp("(?:" + openChars + rTag + "(\\/)?|\\" + delimOpenChar0 + "(\\" + linkChar + ")?\\" + delimOpenChar1 + "(?:(?:\\/(\\w+))\\s*|!--[\\s\\S]*?--))" + closeChars, "g");

	// Default:  bind     tagName         cvt   cln html code    params            slash   bind2         closeBlk  comment

	//      /(?:{(\^)?{(?:(\w+(?=[\/\s}]))|(\w+)?(:)|(>)|(\*))\s*((?:[^}]|}(?!}))*?)(\/)?|{(\^)?{(?:(?:\/(\w+))\s*|!--[\s\S]*?--))}}

	$sub.rTmpl = new RegExp("^\\s|\\s$|<.*>|([^\\\\]|^)[{}]|" + openChars + ".*" + closeChars);

	// $sub.rTmpl looks for initial or final white space, html tags or { or } char not preceded by \\, or JsRender tags {{xxx}}.

	// Each of these strings are considered NOT to be jQuery selectors

	return $viewsSettings;

}

//=========

// View.get

//=========

function getView(inner, type) { //view.get(inner, type)

	if (!type && inner !== true) {

		// view.get(type)

		type = inner;

		inner = undefined;

	}

	var views, i, l, found,

		view = this,

		root = type === "root";

		// view.get("root") returns view.root, view.get() returns view.parent, view.get(true) returns view.views[0].

	if (inner) {

		// Go through views - this one, and all nested ones, depth-first - and return first one with given type.

		// If type is undefined, i.e. view.get(true), return first child view.

		found = type && view.type === type && view;

		if (!found) {

			views = view.views;

			if (view._.useKey) {

				for (i in views) {

					if (found = type ? views[i].get(inner, type) : views[i]) {

						break;

					}

				}

			} else {

				for (i = 0, l = views.length; !found && i < l; i++) {

					found = type ? views[i].get(inner, type) : views[i];

				}

			}

		}

	} else if (root) {

		// Find root view. (view whose parent is top view)

		found = view.root;

	} else if (type) {

		while (view && !found) {

			// Go through views - this one, and all parent ones - and return first one with given type.

			found = view.type === type ? view : undefined;

			view = view.parent;

		}

	} else {

		found = view.parent;

	}

	return found || undefined;

}

function getNestedIndex() {

	var view = this.get("item");

	return view ? view.index : undefined;

}

getNestedIndex.depends = function() {

	return [this.get("item"), "index"];

};

function getIndex() {

	return this.index;

}

getIndex.depends = "index";

//==================

// View.ctxPrm, etc.

//==================

/* Internal private: view._getOb() */

function getPathObject(ob, path, ltOb, fn) {

	// Iterate through path to late paths: @a.b.c paths

	// Return "" (or noop if leaf is a function @a.b.c(...) ) if intermediate object not yet available

	var prevOb, tokens, l,

		i = 0;

	if (ltOb === 1) {

		fn = 1;

		ltOb = undefined;

	}

	// Paths like ^a^b^c or ~^a^b^c will not throw if an object in path is undefined.

	if (path) {

		tokens = path.split(".");

		l = tokens.length;

		for (; ob && i < l; i++) {

			prevOb = ob;

			ob = tokens[i] ? ob[tokens[i]] : ob;

		}

	}

	if (ltOb) {

		ltOb.lt = ltOb.lt || i<l; // If i < l there was an object in the path not yet available

	}

	return ob === undefined

		? fn ? noop : ""

		: fn ? function() {

			return ob.apply(prevOb, arguments);

		} : ob;

}

function contextParameter(key, value, get) {

	// Helper method called as view.ctxPrm(key) for helpers or template parameters ~foo - from compiled template or from context callback

	var wrapped, deps, res, obsCtxPrm, tagElse, callView, newRes,

		storeView = this,

		isUpdate = !isRenderCall && arguments.length > 1,

		store = storeView.ctx;

	if (key) {

		if (!storeView._) { // tagCtx.ctxPrm() call

			tagElse = storeView.index;

			storeView = storeView.tag;

		}

		callView = storeView;

		if (store && store.hasOwnProperty(key) || (store = $helpers).hasOwnProperty(key)) {

			res = store[key];

			if (key === "tag" || key === "tagCtx" || key === "root" || key === "parentTags") {

				return res;

			}

		} else {

			store = undefined;

		}

		if (!isRenderCall && storeView.tagCtx || storeView.linked) { // Data-linked view, or tag instance

			if (!res || !res._cxp) {

				// Not a contextual parameter

				// Set storeView to tag (if this is a tag.ctxPrm() call) or to root view ("data" view of linked template)

				storeView = storeView.tagCtx || $isFunction(res)

					? storeView // Is a tag, not a view, or is a computed contextual parameter, so scope to the callView, no the 'scope view'

					: (storeView = storeView.scope || storeView,

						!storeView.isTop && storeView.ctx.tag // If this view is in a tag, set storeView to the tag

							|| storeView);

				if (res !== undefined && storeView.tagCtx) {

					// If storeView is a tag, but the contextual parameter has been set at at higher level (e.g. helpers)...

					storeView = storeView.tagCtx.view.scope; // then move storeView to the outer level (scope of tag container view)

				}

				store = storeView._ocps;

				res = store && store.hasOwnProperty(key) && store[key] || res;

				if (!(res && res._cxp) && (get || isUpdate)) {

					// Create observable contextual parameter

					(store || (storeView._ocps = storeView._ocps || {}))[key]

						= res

						= [{

							_ocp: res, // The observable contextual parameter value

							_vw: callView,

							_key: key

						}];

					res._cxp = {

						path: _ocp,

						ind: 0,

						updateValue: function(val, path) {

							$.observable(res[0]).setProperty(_ocp, val); // Set the value (res[0]._ocp)

							return this;

						}

					};

				}

			}

			if (obsCtxPrm = res && res._cxp) {

				// If this helper resource is an observable contextual parameter

				if (arguments.length > 2) {

					deps = res[1] ? $sub._ceo(res[1].deps) : [_ocp]; // fn deps (with any exprObs cloned using $sub._ceo)

					deps.unshift(res[0]); // view

					deps._cxp = obsCtxPrm;

					// In a context callback for a contextual param, we set get = true, to get ctxPrm [view, dependencies...] array - needed for observe call

					return deps;

				}

				tagElse = obsCtxPrm.tagElse;

				newRes = res[1] // linkFn for compiled expression

					? obsCtxPrm.tag && obsCtxPrm.tag.cvtArgs

						? obsCtxPrm.tag.cvtArgs(tagElse, 1)[obsCtxPrm.ind] // = tag.bndArgs() - for tag contextual parameter

						: res[1](res[0].data, res[0], $sub) // = fn(data, view, $sub) for compiled binding expression

					: res[0]._ocp; // Observable contextual parameter (uninitialized, or initialized as static expression, so no path dependencies)

				if (isUpdate) {

					$sub._ucp(key, value, storeView, obsCtxPrm); // Update observable contextual parameter

					return storeView;

				}

				res = newRes;

			}

		}

		if (res && $isFunction(res)) {

			// If a helper is of type function we will wrap it, so if called with no this pointer it will be called with the

			// view as 'this' context. If the helper ~foo() was in a data-link expression, the view will have a 'temporary' linkCtx property too.

			// Note that helper functions on deeper paths will have specific this pointers, from the preceding path.

			// For example, ~util.foo() will have the ~util object as 'this' pointer

			wrapped = function() {

				return res.apply((!this || this === global) ? callView : this, arguments);

			};

			$extend(wrapped, res); // Attach same expandos (if any) to the wrapped function

		}

		return wrapped || res;

	}

}

/* Internal private: view._getTmpl() */

function getTemplate(tmpl) {

	return tmpl && (tmpl.fn

		? tmpl

		: this.getRsc("templates", tmpl) || $templates(tmpl)); // not yet compiled

}

//==============

// views._cnvt

//==============

function convertVal(converter, view, tagCtx, onError) {

	// Called from compiled template code for {{:}}

	// self is template object or linkCtx object

	var tag, linkCtx, value, argsLen, bindTo,

		// If tagCtx is an integer, then it is the key for the compiled function to return the boundTag tagCtx

		boundTag = typeof tagCtx === "number" && view.tmpl.bnds[tagCtx-1];

	if (onError === undefined && boundTag && boundTag._lr) { // lateRender

		onError = "";

	}

	if (onError !== undefined) {

		tagCtx = onError = {props: {}, args: [onError]};

	} else if (boundTag) {

		tagCtx = boundTag(view.data, view, $sub);

	}

	boundTag = boundTag._bd && boundTag;

	if (converter || boundTag) {

		linkCtx = view._lc; // For data-link="{cvt:...}"... See onDataLinkedTagChange

		tag = linkCtx && linkCtx.tag;

		tagCtx.view = view;

		if (!tag) {

			tag = $extend(new $sub._tg(), {

				_: {

					bnd: boundTag,

					unlinked: true,

					lt: tagCtx.lt // If a late path @some.path has not returned @some object, mark tag as late

				},

				inline: !linkCtx,

				tagName: ":",

				convert: converter,

				onArrayChange: true,

				flow: true,

				tagCtx: tagCtx,

				tagCtxs: [tagCtx],

				_is: "tag"

			});

			argsLen = tagCtx.args.length;

			if (argsLen>1) {

				bindTo = tag.bindTo = [];

				while (argsLen--) {

					bindTo.unshift(argsLen); // Bind to all the arguments - generate bindTo array: [0,1,2...]

				}

			}

			if (linkCtx) {

				linkCtx.tag = tag;

				tag.linkCtx = linkCtx;

			}

			tagCtx.ctx = extendCtx(tagCtx.ctx, (linkCtx ? linkCtx.view : view).ctx);

			tagHandlersFromProps(tag, tagCtx);

		}

		tag._er = onError && value;

		tag.ctx = tagCtx.ctx || tag.ctx || {};

		tagCtx.ctx = undefined;

		value = tag.cvtArgs()[0]; // If there is a convertBack but no convert, converter will be "true"

		tag._er = onError && value;

	} else {

		value = tagCtx.args[0];

	}

	// Call onRender (used by JsViews if present, to add binding annotations around rendered content)

	value = boundTag && view._.onRender

		? view._.onRender(value, view, tag)

		: value;

	return value != undefined ? value : "";

}

function convertArgs(tagElse, bound) { // tag.cvtArgs() or tag.cvtArgs(tagElse?, true?)

	var l, key, boundArgs, args, bindFrom, tag, converter,

		tagCtx = this;

	if (tagCtx.tagName) {

		tag = tagCtx;

		tagCtx = (tag.tagCtxs || [tagCtx])[tagElse||0];

		if (!tagCtx) {

			return;

		}

	} else {

		tag = tagCtx.tag;

	}

	bindFrom = tag.bindFrom;

	args = tagCtx.args;

	if ((converter = tag.convert) && "" + converter === converter) {

		converter = converter === "true"

			? undefined

			: (tagCtx.view.getRsc("converters", converter) || error("Unknown converter: '" + converter + "'"));

	}

	if (converter && !bound) { // If there is a converter, use a copy of the tagCtx.args array for rendering, and replace the args[0] in

		args = args.slice(); // the copied array with the converted value. But we do not modify the value of tag.tagCtx.args[0] (the original args array)

	}

	if (bindFrom) { // Get the values of the boundArgs

		boundArgs = [];

		l = bindFrom.length;

		while (l--) {

			key = bindFrom[l];

			boundArgs.unshift(argOrProp(tagCtx, key));

		}

		if (bound) {

			args = boundArgs; // Call to bndArgs() - returns the boundArgs

		}

	}

	if (converter) {

		converter = converter.apply(tag, boundArgs || args);

		if (converter === undefined) {

			return args; // Returning undefined from a converter is equivalent to not having a converter.

		}

		bindFrom = bindFrom || [0];

		l = bindFrom.length;

		if (!$isArray(converter) || converter.length !== l) {

			converter = [converter];

			bindFrom = [0];

			l = 1;

		}

		if (bound) {        // Call to bndArgs() - so apply converter to all boundArgs

			args = converter; // The array of values returned from the converter

		} else {            // Call to cvtArgs()

			while (l--) {

				key = bindFrom[l];

				if (+key === key) {

					args[key] = converter[l];

				}

			}

		}

	}

	return args;

}

function argOrProp(context, key) {

	context = context[+key === key ? "args" : "props"];

	return context && context[key];

}

function convertBoundArgs(tagElse) { // tag.bndArgs()

	return this.cvtArgs(tagElse, 1);

}

//=============

// views.tag

//=============

/* view.getRsc() */

function getResource(resourceType, itemName) {

	var res, store,

		view = this;

	if ("" + itemName === itemName) {

		while ((res === undefined) && view) {

			store = view.tmpl && view.tmpl[resourceType];

			res = store && store[itemName];

			view = view.parent;

		}

		return res || $views[resourceType][itemName];

	}

}

function renderTag(tagName, parentView, tmpl, tagCtxs, isUpdate, onError) {

	function bindToOrBindFrom(type) {

		var bindArray = tag[type];

		if (bindArray !== undefined) {

			bindArray = $isArray(bindArray) ? bindArray : [bindArray];

			m = bindArray.length;

			while (m--) {

				key = bindArray[m];

				if (!isNaN(parseInt(key))) {

					bindArray[m] = parseInt(key); // Convert "0" to 0, etc.

				}

			}

		}

		return bindArray || [0];

	}

	parentView = parentView || topView;

	var tag, tagDef, template, tags, attr, parentTag, l, m, n, itemRet, tagCtx, tagCtxCtx, ctxPrm, bindTo, bindFrom, initVal,

		content, callInit, mapDef, thisMap, args, bdArgs, props, tagDataMap, contentCtx, key, bindFromLength, bindToLength, linkedElement, defaultCtx,

		i = 0,

		ret = "",

		linkCtx = parentView._lc || false, // For data-link="{myTag...}"... See onDataLinkedTagChange

		ctx = parentView.ctx,

		parentTmpl = tmpl || parentView.tmpl,

		// If tagCtxs is an integer, then it is the key for the compiled function to return the boundTag tagCtxs

		boundTag = typeof tagCtxs === "number" && parentView.tmpl.bnds[tagCtxs-1];

	if (tagName._is === "tag") {

		tag = tagName;

		tagName = tag.tagName;

		tagCtxs = tag.tagCtxs;

		template = tag.template;

	} else {

		tagDef = parentView.getRsc("tags", tagName) || error("Unknown tag: {{" + tagName + "}} ");

		template = tagDef.template;

	}

	if (onError === undefined && boundTag && (boundTag._lr = (tagDef.lateRender && boundTag._lr!== false || boundTag._lr))) {

		onError = ""; // If lateRender, set temporary onError, to skip initial rendering (and render just "")

	}

	if (onError !== undefined) {

		ret += onError;

		tagCtxs = onError = [{props: {}, args: [], params: {props:{}}}];

	} else if (boundTag) {

		tagCtxs = boundTag(parentView.data, parentView, $sub);

	}

	l = tagCtxs.length;

	for (; i < l; i++) {

		tagCtx = tagCtxs[i];

		content = tagCtx.tmpl;

		if (!linkCtx || !linkCtx.tag || i && !linkCtx.tag.inline || tag._er || content && +content===content) {

			// Initialize tagCtx

			// For block tags, tagCtx.tmpl is an integer > 0

			if (content && parentTmpl.tmpls) {

				tagCtx.tmpl = tagCtx.content = parentTmpl.tmpls[content - 1]; // Set the tmpl property to the content of the block tag

			}

			tagCtx.index = i;

			tagCtx.ctxPrm = contextParameter;

			tagCtx.render = renderContent;

			tagCtx.cvtArgs = convertArgs;

			tagCtx.bndArgs = convertBoundArgs;

			tagCtx.view = parentView;

			tagCtx.ctx = extendCtx(extendCtx(tagCtx.ctx, tagDef && tagDef.ctx), ctx); // Clone and extend parentView.ctx

		}

		if (tmpl = tagCtx.props.tmpl) {

			// If the tmpl property is overridden, set the value (when initializing, or, in case of binding: ^tmpl=..., when updating)

			tagCtx.tmpl = parentView._getTmpl(tmpl);

			tagCtx.content = tagCtx.content || tagCtx.tmpl;

		}

		if (!tag) {

			// This will only be hit for initial tagCtx (not for {{else}}) - if the tag instance does not exist yet

			// If the tag has not already been instantiated, we will create a new instance.

			// ~tag will access the tag, even within the rendering of the template content of this tag.

			// From child/descendant tags, can access using ~tag.parent, or ~parentTags.tagName

			tag = new tagDef._ctr();

			callInit = !!tag.init;

			tag.parent = parentTag = ctx && ctx.tag;

			tag.tagCtxs = tagCtxs;

			if (linkCtx) {

				tag.inline = false;

				linkCtx.tag = tag;

			}

			tag.linkCtx = linkCtx;

			if (tag._.bnd = boundTag || linkCtx.fn) {

				// Bound if {^{tag...}} or data-link="{tag...}"

				tag._.ths = tagCtx.params.props.this; // Tag has a this=expr binding, to get javascript reference to tag instance

				tag._.lt = tagCtxs.lt; // If a late path @some.path has not returned @some object, mark tag as late

				tag._.arrVws = {};

			} else if (tag.dataBoundOnly) {

				error(tagName + " must be data-bound:\n{^{" + tagName + "}}");

			}

			//TODO better perf for childTags() - keep child tag.tags array, (and remove child, when disposed)

			// tag.tags = [];

		} else if (linkCtx && linkCtx.fn._lr) {

			callInit = !!tag.init;

		}

		tagDataMap = tag.dataMap;

		tagCtx.tag = tag;

		if (tagDataMap && tagCtxs) {

			tagCtx.map = tagCtxs[i].map; // Copy over the compiled map instance from the previous tagCtxs to the refreshed ones

		}

		if (!tag.flow) {

			tagCtxCtx = tagCtx.ctx = tagCtx.ctx || {};

			// tags hash: tag.ctx.tags, merged with parentView.ctx.tags,

			tags = tag.parents = tagCtxCtx.parentTags = ctx && extendCtx(tagCtxCtx.parentTags, ctx.parentTags) || {};

			if (parentTag) {

				tags[parentTag.tagName] = parentTag;

				//TODO better perf for childTags: parentTag.tags.push(tag);

			}

			tags[tag.tagName] = tagCtxCtx.tag = tag;

			tagCtxCtx.tagCtx = tagCtx;

		}

	}

	if (!(tag._er = onError)) {

		tagHandlersFromProps(tag, tagCtxs[0]);

		tag.rendering = {rndr: tag.rendering}; // Provide object for state during render calls to tag and elses. (Used by {{if}} and {{for}}...)

		for (i = 0; i < l; i++) { // Iterate tagCtx for each {{else}} block

			tagCtx = tag.tagCtx = tagCtxs[i];

			props = tagCtx.props;

			tag.ctx = tagCtx.ctx;

			if (!i) {

				if (callInit) {

					tag.init(tagCtx, linkCtx, tag.ctx);

					callInit = undefined;

				}

				if (!tagCtx.args.length && tagCtx.argDefault !== false && tag.argDefault !== false) {

					tagCtx.args = args = [tagCtx.view.data]; // Missing first arg defaults to the current data context

					tagCtx.params.args = ["#data"];

				}

				bindTo = bindToOrBindFrom("bindTo");

				if (tag.bindTo !== undefined) {

					tag.bindTo = bindTo;

				}

				if (tag.bindFrom !== undefined) {

					tag.bindFrom = bindToOrBindFrom("bindFrom");

				} else if (tag.bindTo) {

					tag.bindFrom = tag.bindTo = bindTo;

				}

				bindFrom = tag.bindFrom || bindTo;

				bindToLength = bindTo.length;

				bindFromLength = bindFrom.length;

				if (tag._.bnd && (linkedElement = tag.linkedElement)) {

					tag.linkedElement = linkedElement = $isArray(linkedElement) ? linkedElement: [linkedElement];

					if (bindToLength !== linkedElement.length) {

						error("linkedElement not same length as bindTo");

					}

				}

				if (linkedElement = tag.linkedCtxParam) {

					tag.linkedCtxParam = linkedElement = $isArray(linkedElement) ? linkedElement: [linkedElement];

					if (bindFromLength !== linkedElement.length) {

						error("linkedCtxParam not same length as bindFrom/bindTo");

					}

				}

				if (bindFrom) {

					tag._.fromIndex = {}; // Hash of bindFrom index which has same path value as bindTo index. fromIndex = tag._.fromIndex[toIndex]

					tag._.toIndex = {}; // Hash of bindFrom index which has same path value as bindTo index. fromIndex = tag._.fromIndex[toIndex]

					n = bindFromLength;

					while (n--) {

						key = bindFrom[n];

						m = bindToLength;

						while (m--) {

							if (key === bindTo[m]) {

								tag._.fromIndex[m] = n;

								tag._.toIndex[n] = m;

							}

						}

					}

				}

				if (linkCtx) {

					// Set attr on linkCtx to ensure outputting to the correct target attribute.

					// Setting either linkCtx.attr or this.attr in the init() allows per-instance choice of target attrib.

					linkCtx.attr = tag.attr = linkCtx.attr || tag.attr || linkCtx._dfAt;

				}

				attr = tag.attr;

				tag._.noVws = attr && attr !== HTML;

			}

			args = tag.cvtArgs(i);

			if (tag.linkedCtxParam) {

				bdArgs = tag.cvtArgs(i, 1);

				m = bindFromLength;

				defaultCtx = tag.constructor.prototype.ctx;

				while (m--) {

					if (ctxPrm = tag.linkedCtxParam[m]) {

						key = bindFrom[m];

						initVal = bdArgs[m];

						// Create tag contextual parameter

						tagCtx.ctx[ctxPrm] = $sub._cp(

							defaultCtx && initVal === undefined ? defaultCtx[ctxPrm]: initVal,

							initVal !== undefined && argOrProp(tagCtx.params, key),

							tagCtx.view,

							tag._.bnd && {tag: tag, cvt: tag.convert, ind: m, tagElse: i}

						);

					}

				}

			}

			if ((mapDef = props.dataMap || tagDataMap) && (args.length || props.dataMap)) {

				thisMap = tagCtx.map;

				if (!thisMap || thisMap.src !== args[0] || isUpdate) {

					if (thisMap && thisMap.src) {

						thisMap.unmap(); // only called if observable map - not when only used in JsRender, e.g. by {{props}}

					}

					mapDef.map(args[0], tagCtx, thisMap, !tag._.bnd);

					thisMap = tagCtx.map;

				}

				args = [thisMap.tgt];

			}

			itemRet = undefined;

			if (tag.render) {

				itemRet = tag.render.apply(tag, args);

				if (parentView.linked && itemRet && !rWrappedInViewMarker.test(itemRet)) {

					// When a tag renders content from the render method, with data linking then we need to wrap with view markers, if absent,

					// to provide a contentView for the tag, which will correctly dispose bindings if deleted. The 'tmpl' for this view will

					// be a dumbed-down template which will always return the itemRet string (no matter what the data is). The itemRet string

					// is not compiled as template markup, so can include "{{" or "}}" without triggering syntax errors

					tmpl = { // 'Dumbed-down' template which always renders 'static' itemRet string

						links: []

					};

					tmpl.render = tmpl.fn = function() {

						return itemRet;

					};

					itemRet = renderWithViews(tmpl, parentView.data, undefined, true, parentView, undefined, undefined, tag);

				}

			}

			if (!args.length) {

				args = [parentView]; // no arguments - (e.g. {{else}}) get data context from view.

			}

			if (itemRet === undefined) {

				contentCtx = args[0]; // Default data context for wrapped block content is the first argument

				if (tag.contentCtx) { // Set tag.contentCtx to true, to inherit parent context, or to a function to provide alternate context.

					contentCtx = tag.contentCtx === true ? parentView : tag.contentCtx(contentCtx);

				}

				itemRet = tagCtx.render(contentCtx, true) || (isUpdate ? undefined : "");

			}

			ret = ret

				? ret + (itemRet || "")

				: itemRet !== undefined

					? "" + itemRet

					: undefined; // If no return value from render, and no template/content tagCtx.render(...), return undefined

		}

		tag.rendering = tag.rendering.rndr; // Remove tag.rendering object (if this is outermost render call. (In case of nested calls)

	}

	tag.tagCtx = tagCtxs[0];

	tag.ctx = tag.tagCtx.ctx;

	if (tag._.noVws && tag.inline) {

		// inline tag with attr set to "text" will insert HTML-encoded content - as if it was element-based innerText

		ret = attr === "text"

			? $converters.html(ret)

			: "";

	}

	return boundTag && parentView._.onRender

		// Call onRender (used by JsViews if present, to add binding annotations around rendered content)

		? parentView._.onRender(ret, parentView, tag)

		: ret;

}

//=================

// View constructor

//=================

function View(context, type, parentView, data, template, key, onRender, contentTmpl) {

	// Constructor for view object in view hierarchy. (Augmented by JsViews if JsViews is loaded)

	var views, parentView_, tag, self_,

		self = this,

		isArray = type === "array";

		// If the data is an array, this is an 'array view' with a views array for each child 'item view'

		// If the data is not an array, this is an 'item view' with a views 'hash' object for any child nested views

	self.content = contentTmpl;

	self.views = isArray ? [] : {};

	self.data = data;

	self.tmpl = template;

	self_ = self._ = {

		key: 0,

		// ._.useKey is non zero if is not an 'array view' (owning a data array). Use this as next key for adding to child views hash

		useKey: isArray ? 0 : 1,

		id: "" + viewId++,

		onRender: onRender,

		bnds: {}

	};

	self.linked = !!onRender;

	self.type = type || "top";

	if (type) {

		self.cache = {_ct: $subSettings._cchCt}; // Used for caching results of computed properties and helpers (view.getCache)

	}

	if (!parentView || parentView.type === "top") {

		(self.ctx = context || {}).root = self.data;

	}

	if (self.parent = parentView) {

		self.root = parentView.root || self; // view whose parent is top view

		views = parentView.views;

		parentView_ = parentView._;

		self.isTop = parentView_.scp; // Is top content view of a link("#container", ...) call

		self.scope = (!context.tag || context.tag === parentView.ctx.tag) && !self.isTop && parentView.scope || self;

		// Scope for contextParams - closest non flow tag ancestor or root view

		if (parentView_.useKey) {

			// Parent is not an 'array view'. Add this view to its views object

			// self._key = is the key in the parent view hash

			views[self_.key = "_" + parentView_.useKey++] = self;

			self.index = indexStr;

			self.getIndex = getNestedIndex;

		} else if (views.length === (self_.key = self.index = key)) { // Parent is an 'array view'. Add this view to its views array

			views.push(self); // Adding to end of views array. (Using push when possible - better perf than splice)

		} else {

			views.splice(key, 0, self); // Inserting in views array

		}

		// If no context was passed in, use parent context

		// If context was passed in, it should have been merged already with parent context

		self.ctx = context || parentView.ctx;

	} else if (type) {

		self.root = self; // view whose parent is top view

	}

}