todomvc/examples/canjs_require/bower_components/canjs/amd/can/util/zepto.js

> Helping you select an MV\* framework

/*!
 * CanJS - 2.0.3
 * http://canjs.us/
 * Copyright (c) 2013 Bitovi
 * Tue, 26 Nov 2013 18:21:22 GMT
 * Licensed MIT
 * Includes: CanJS default build
 * Download from: http://canjs.us/
 */
define(["can/util/can", "zepto", "can/util/object/isplain", "can/util/event", "can/util/fragment", "can/util/deferred", "can/util/array/each", "can/util/inserted"], function (can) {
	var $ = Zepto;

	// data.js
	// ---------
	// _jQuery-like data methods._
	var data = {}, dataAttr = $.fn.data,
		uuid = $.uuid = +new Date(),
		exp  = $.expando = 'Zepto' + uuid;

	function getData(node, name) {
		var id = node[exp], store = id && data[id];
		return name === undefined ? store || setData(node) :
			(store && store[name]) || dataAttr.call($(node), name);
	}

	function setData(node, name, value) {
		var id = node[exp] || (node[exp] = ++uuid),
			store = data[id] || (data[id] = {});
		if (name !== undefined) store[name] = value;
		return store;
	};

	$.fn.data = function(name, value) {
		return value === undefined ?
			this.length == 0 ? undefined : getData(this[0], name) :
			this.each(function(idx){
				setData(this, name, $.isFunction(value) ?
					value.call(this, idx, getData(this, name)) : value);
			});
	};
	$.cleanData = function(elems){
		// trigger all the events ... then remove the data
		for ( var i = 0, elem;  (elem = elems[i]) !== undefined; i++ ) {
			can.trigger(elem,"removed",[],false);
		}
		for ( var i = 0, elem;
		      (elem = elems[i]) !== undefined; i++ ) {
			var id = elem[exp];
			delete data[id];
		}

	}

	// zepto.js
	// ---------
	// _Zepto node list._

	var oldEach = can.each;
	// Extend what you can out of Zepto.
	$.extend(can, Zepto);
	can.each = oldEach;

	var arrHas = function (obj, name) {
		return obj[0] && obj[0][name] || obj[name]
	}

	// Do what's similar for jQuery.
	can.trigger = function (obj, event, args, bubble) {
		if (obj.trigger) {
			obj.trigger(event, args)
		} else if (arrHas(obj, "dispatchEvent")) {
			if (bubble === false) {
				$([obj]).triggerHandler(event, args)
			} else {
				$([obj]).trigger(event, args)
			}

		} else {
			if (typeof event == "string") {
				event = {type : event}
			}
			event.target = event.target || obj;
			can.dispatch.call(obj, event, args)
		}

	}

	can.$ = Zepto;

	can.bind = function (ev, cb) {
		// If we can bind to it...
		if (this.bind) {
			this.bind(ev, cb)
		} else if (arrHas(this, "addEventListener")) {
			$([this]).bind(ev, cb)
		} else {
			can.addEvent.call(this, ev, cb)
		}
		return this;
	}
	can.unbind = function (ev, cb) {
		// If we can bind to it...
		if (this.unbind) {
			this.unbind(ev, cb)
		} else if (arrHas(this, "addEventListener")) {
			$([this]).unbind(ev, cb)
		} else {
			can.removeEvent.call(this, ev, cb)
		}
		return this;
	}

	// Alias on/off to bind/unbind respectively
	can.on = can.bind;
	can.off = can.unbind;

	can.delegate = function (selector, ev, cb) {
		if (this.delegate) {
			this.delegate(selector, ev, cb)
		} else {
			$([this]).delegate(selector, ev, cb)
		}
	}
	can.undelegate = function (selector, ev, cb) {
		if (this.undelegate) {
			this.undelegate(selector, ev, cb)
		} else {
			$([this]).undelegate(selector, ev, cb)
		}
	}

	$.each(["append", "filter", "addClass", "remove", "data","has"], function (i, name) {
		can[name] = function (wrapped) {
			return wrapped[name].apply(wrapped, can.makeArray(arguments).slice(1))
		}
	})


	can.makeArray = function (arr) {
		var ret = []
		can.each(arr, function (a, i) {
			ret[i] = a
		})
		return ret;
	};

	can.proxy = function (f, ctx) {
		return function () {
			return f.apply(ctx, arguments)
		}
	}

	// Make ajax.
	var XHR = $.ajaxSettings.xhr;
	$.ajaxSettings.xhr = function () {
		var xhr = XHR()
		var open = xhr.open;
		xhr.open = function (type, url, async) {
			open.call(this, type, url, ASYNC === undefined ? true : ASYNC)
		}
		return xhr;
	}
	var ASYNC;
	var AJAX = $.ajax;
	var updateDeferred = function (xhr, d) {
		for (var prop in xhr) {
			if (typeof d[prop] == 'function') {
				d[prop] = function () {
					xhr[prop].apply(xhr, arguments)
				}
			} else {
				d[prop] = prop[xhr]
			}
		}
	}
	can.ajax = function (options) {

		var success = options.success,
			error = options.error;
		var d = can.Deferred();

		options.success = function (data) {

			updateDeferred(xhr, d);
			d.resolve.call(d, data);
			success && success.apply(this, arguments);
		}
		options.error = function () {
			updateDeferred(xhr, d);
			d.reject.apply(d, arguments);
			error && error.apply(this, arguments);
		}
		if (options.async === false) {
			ASYNC = false
		}
		var xhr = AJAX(options);
		ASYNC = undefined;
		updateDeferred(xhr, d);
		return d;
	};


	// Make destroyed and empty work.
	$.fn.empty = function () {
		return this.each(function () {
			$.cleanData(this.getElementsByTagName('*'))
			this.innerHTML = ''
		})
	}

	$.fn.remove = function () {
		this.each(function () {
			if (this.parentNode != null) {
				// might be a text node

				if( this.getElementsByTagName ){
					$.cleanData( [this].concat( can.makeArray(this.getElementsByTagName('*')) )  );
				}

				this.parentNode.removeChild(this);
			}
		});
		return this;
	}


	can.trim = function (str) {
		return str.trim();
	}
	can.isEmptyObject = function (object) {
		var name;
		for (name in object) {
		}
		;
		return name === undefined;
	}

	// Make extend handle `true` for deep.
	can.extend = function (first) {
		if (first === true) {
			var args = can.makeArray(arguments);
			args.shift();
			return $.extend.apply($, args)
		}
		return $.extend.apply($, arguments)
	}

	can.get = function (wrapped, index) {
		return wrapped[index];
	}

	// setup inserted calls
	can.each([ 'after','prepend', 'before', 'append','html'], function(name){
		var original = Zepto.fn[name];
		Zepto.fn[name] = function(){
			var elems,
				args = can.makeArray(arguments);

			if( args[0] != null ){
				// documentFragment
				if( typeof args[0] == "string" ) {
					args[0] = $.zepto.fragment(args[0]);
				}
				if(args[0].nodeType === 11){
					elems = can.makeArray(args[0].childNodes);
				} else {
					elems = [args[0]]
				}
			}

			var ret = original.apply(this,args);

			can.inserted( elems );

			return ret;
		}
	})


	return can;
});