Import Request

Source/Request.js

@@ -0,0 +1,265 @@
+
+define([
+	'Base/Core/Class',
+	'Base/Class/Options',
+	'Base/Class/Events',
+	'Base/Class/Chain'
+], function(Class, Options, Events, Chain){
+
+var XMLHTTP = function(){
+	return new XMLHttpRequest();
+};
+
+var MSXML2 = function(){
+	return new ActiveXObject('MSXML2.XMLHTTP');
+};
+
+var MSXML = function(){
+	return new ActiveXObject('Microsoft.XMLHTTP');
+};
+
+var XHR;
+try {
+	XMLHTTP();
+	XHR = XMLHTTP;
+} catch (e){}
+
+if (!XHR) try {
+	MSXML2();
+	XHR = MSXML2;	
+} catch (e){}
+
+if (!XHR) try {
+	MSXML();
+	XHR = MSXML;	
+} catch (e){}
+
+var empty = function(){},
+	progressSupport = ('onprogress' in new XHR);
+
+var Request = new Class({
+
+	Implements: [Chain, Events, Options],
+
+	options: {/*
+		onRequest: function(){},
+		onLoadstart: function(event, xhr){},
+		onProgress: function(event, xhr){},
+		onComplete: function(){},
+		onCancel: function(){},
+		onSuccess: function(responseText, responseXML){},
+		onFailure: function(xhr){},
+		onException: function(headerName, value){},
+		onTimeout: function(){},
+		user: '',
+		password: '',*/
+		url: '',
+		data: '',
+		headers: {
+			'X-Requested-With': 'XMLHttpRequest',
+			'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+		},
+		async: true,
+		format: false,
+		method: 'post',
+		link: 'ignore',
+		isSuccess: null,
+		emulation: true,
+		urlEncoded: true,
+		encoding: 'utf-8',
+		evalScripts: false,
+		evalResponse: false,
+		timeout: 0,
+		noCache: false
+	},
+
+	initialize: function(options){
+		this.xhr = new Browser.Request();
+		this.setOptions(options);
+		this.headers = this.options.headers;
+	},
+
+	onStateChange: function(){
+		var xhr = this.xhr;
+		if (xhr.readyState != 4 || !this.running) return;
+		this.running = false;
+		this.status = 0;
+		Function.attempt(function(){
+			var status = xhr.status;
+			this.status = (status == 1223) ? 204 : status;
+		}.bind(this));
+		xhr.onreadystatechange = empty;
+		if (progressSupport) xhr.onprogress = xhr.onloadstart = empty;
+		clearTimeout(this.timer);
+
+		this.response = {text: this.xhr.responseText || '', xml: this.xhr.responseXML};
+		if (this.options.isSuccess.call(this, this.status))
+			this.success(this.response.text, this.response.xml);
+		else
+			this.failure();
+	},
+
+	isSuccess: function(){
+		var status = this.status;
+		return (status >= 200 && status < 300);
+	},
+
+	isRunning: function(){
+		return !!this.running;
+	},
+
+	processScripts: function(text){
+		if (this.options.evalResponse || (/(ecma|java)script/).test(this.getHeader('Content-type'))) return Browser.exec(text);
+		return text.stripScripts(this.options.evalScripts);
+	},
+
+	success: function(text, xml){
+		this.onSuccess(this.processScripts(text), xml);
+	},
+
+	onSuccess: function(){
+		this.fireEvent('complete', arguments).fireEvent('success', arguments).callChain();
+	},
+
+	failure: function(){
+		this.onFailure();
+	},
+
+	onFailure: function(){
+		this.fireEvent('complete').fireEvent('failure', this.xhr);
+	},
+
+	loadstart: function(event){
+		this.fireEvent('loadstart', [event, this.xhr]);
+	},
+
+	progress: function(event){
+		this.fireEvent('progress', [event, this.xhr]);
+	},
+
+	timeout: function(){
+		this.fireEvent('timeout', this.xhr);
+	},
+
+	setHeader: function(name, value){
+		this.headers[name] = value;
+		return this;
+	},
+
+	getHeader: function(name){
+		return Function.attempt(function(){
+			return this.xhr.getResponseHeader(name);
+		}.bind(this));
+	},
+
+	check: function(){
+		if (!this.running) return true;
+		switch (this.options.link){
+			case 'cancel': this.cancel(); return true;
+			case 'chain': this.chain(this.caller.pass(arguments, this)); return false;
+		}
+		return false;
+	},
+
+	send: function(options){
+		if (!this.check(options)) return this;
+
+		this.options.isSuccess = this.options.isSuccess || this.isSuccess;
+		this.running = true;
+
+		var type = typeOf(options);
+		if (type == 'string' || type == 'element') options = {data: options};
+
+		var old = this.options;
+		options = Object.append({data: old.data, url: old.url, method: old.method}, options);
+		var data = options.data, url = String(options.url), method = options.method.toLowerCase();
+
+		switch (typeOf(data)){
+			case 'element': data = document.id(data).toQueryString(); break;
+			case 'object': case 'hash': data = Object.toQueryString(data);
+		}
+
+		if (this.options.format){
+			var format = 'format=' + this.options.format;
+			data = (data) ? format + '&' + data : format;
+		}
+
+		if (this.options.emulation && !['get', 'post'].contains(method)){
+			var _method = '_method=' + method;
+			data = (data) ? _method + '&' + data : _method;
+			method = 'post';
+		}
+
+		if (this.options.urlEncoded && ['post', 'put'].contains(method)){
+			var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding : '';
+			this.headers['Content-type'] = 'application/x-www-form-urlencoded' + encoding;
+		}
+
+		if (!url) url = document.location.pathname;
+
+		var trimPosition = url.lastIndexOf('/');
+		if (trimPosition > -1 && (trimPosition = url.indexOf('#')) > -1) url = url.substr(0, trimPosition);
+
+		if (this.options.noCache)
+			url += (url.contains('?') ? '&' : '?') + String.uniqueID();
+
+		if (data && method == 'get'){
+			url += (url.contains('?') ? '&' : '?') + data;
+			data = null;
+		}
+
+		var xhr = this.xhr;
+		if (progressSupport){
+			xhr.onloadstart = this.loadstart.bind(this);
+			xhr.onprogress = this.progress.bind(this);
+		}
+
+		xhr.open(method.toUpperCase(), url, this.options.async, this.options.user, this.options.password);
+		if (this.options.user && 'withCredentials' in xhr) xhr.withCredentials = true;
+
+		xhr.onreadystatechange = this.onStateChange.bind(this);
+
+		Object.each(this.headers, function(value, key){
+			try {
+				xhr.setRequestHeader(key, value);
+			} catch (e){
+				this.fireEvent('exception', [key, value]);
+			}
+		}, this);
+
+		this.fireEvent('request');
+		xhr.send(data);
+		if (!this.options.async) this.onStateChange();
+		if (this.options.timeout) this.timer = this.timeout.delay(this.options.timeout, this);
+		return this;
+	},
+
+	cancel: function(){
+		if (!this.running) return this;
+		this.running = false;
+		var xhr = this.xhr;
+		xhr.abort();
+		clearTimeout(this.timer);
+		xhr.onreadystatechange = empty;
+		if (progressSupport) xhr.onprogress = xhr.onloadstart = empty;
+		this.xhr = new Browser.Request();
+		this.fireEvent('cancel');
+		return this;
+	}
+
+});
+
+var methods = {};
+['get', 'post', 'put', 'delete', 'GET', 'POST', 'PUT', 'DELETE'].each(function(method){
+	methods[method] = function(data){
+		var object = {
+			method: method
+		};
+		if (data != null) object.data = data;
+		return this.send(object);
+	};
+});
+
+Request.implement(methods);
+
+});