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'xdr' : null;",""," // Prevent \"pre-flight\" OPTIONS request by removing the"," // `X-Requested-With` HTTP header from CORS requests. This header"," // can be added back on a per-request basis, if desired."," io.setHeader('X-Requested-With');"," }",""," use = alt || form;"," transaction = use ? Y.merge(Y.IO.customTransport(use), transaction) :"," Y.merge(Y.IO.defaultTransport(), transaction);",""," if (transaction.notify) {"," config.notify = function (e, t, c) { io.notify(e, t, c); };"," }",""," if (!use) {"," if (win && win.FormData && config.data instanceof win.FormData) {"," transaction.c.upload.onprogress = function (e) {"," io.progress(transaction, e, config);"," };"," transaction.c.onload = function (e) {"," io.load(transaction, e, config);"," };"," transaction.c.onerror = function (e) {"," io.error(transaction, e, config);"," };"," transaction.upload = true;"," }"," }",""," return transaction;"," },",""," _destroy: function(transaction) {"," if (win && !transaction.notify && !transaction.xdr) {"," if (XHR && !transaction.upload) {"," transaction.c.onreadystatechange = null;"," } else if (transaction.upload) {"," transaction.c.upload.onprogress = null;"," transaction.c.onload = null;"," transaction.c.onerror = null;"," } else if (Y.UA.ie && !transaction.e) {"," // IE, when using XMLHttpRequest as an ActiveX Object, will throw"," // a \"Type Mismatch\" error if the event handler is set to \"null\"."," transaction.c.abort();"," }"," }",""," transaction = transaction.c = null;"," },",""," /**"," * Method for creating and firing events."," *"," * @method _evt"," * @private"," * @param {String} eventName Event to be published."," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration data subset for event subscription."," */"," _evt: function(eventName, transaction, config) {"," var io = this, params,"," args = config['arguments'],"," emitFacade = io.cfg.emitFacade,"," globalEvent = \"io:\" + eventName,"," trnEvent = \"io-trn:\" + eventName;",""," // Workaround for #2532107"," this.detach(trnEvent);",""," if (transaction.e) {"," transaction.c = { status: 0, statusText: transaction.e };"," }",""," // Fire event with parameters or an Event Facade."," params = [ emitFacade ?"," {"," id: transaction.id,"," data: transaction.c,"," cfg: config,"," 'arguments': args"," } :"," transaction.id"," ];",""," if (!emitFacade) {"," if (eventName === EVENTS[0] || eventName === EVENTS[2]) {"," if (args) {"," params.push(args);"," }"," } else {"," if (transaction.evt) {"," params.push(transaction.evt);"," } else {"," params.push(transaction.c);"," }"," if (args) {"," params.push(args);"," }"," }"," }",""," params.unshift(globalEvent);"," // Fire global events."," io.fire.apply(io, params);"," // Fire transaction events, if receivers are defined."," if (config.on) {"," params[0] = trnEvent;"," io.once(trnEvent, config.on[eventName], config.context || Y);"," io.fire.apply(io, params);"," }"," },",""," /**"," * Fires event \"io:start\" and creates, fires a transaction-specific"," * start event, if `config.on.start` is defined."," *"," * @method start"," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration object for the transaction."," */"," start: function(transaction, config) {"," /**"," * Signals the start of an IO request."," * @event io:start"," */"," this._evt(EVENTS[0], transaction, config);"," },",""," /**"," * Fires event \"io:complete\" and creates, fires a"," * transaction-specific \"complete\" event, if config.on.complete is"," * defined."," *"," * @method complete"," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration object for the transaction."," */"," complete: function(transaction, config) {"," /**"," * Signals the completion of the request-response phase of a"," * transaction. Response status and data are accessible, if"," * available, in this event."," * @event io:complete"," */"," this._evt(EVENTS[1], transaction, config);"," },",""," /**"," * Fires event \"io:end\" and creates, fires a transaction-specific \"end\""," * event, if config.on.end is defined."," *"," * @method end"," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration object for the transaction."," */"," end: function(transaction, config) {"," /**"," * Signals the end of the transaction lifecycle."," * @event io:end"," */"," this._evt(EVENTS[2], transaction, config);"," this._destroy(transaction);"," },",""," /**"," * Fires event \"io:success\" and creates, fires a transaction-specific"," * \"success\" event, if config.on.success is defined."," *"," * @method success"," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration object for the transaction."," */"," success: function(transaction, config) {"," /**"," * Signals an HTTP response with status in the 2xx range."," * Fires after io:complete."," * @event io:success"," */"," this._evt(EVENTS[3], transaction, config);"," this.end(transaction, config);"," },",""," /**"," * Fires event \"io:failure\" and creates, fires a transaction-specific"," * \"failure\" event, if config.on.failure is defined."," *"," * @method failure"," * @param {Object} transaction Transaction object."," * @param {Object} config Configuration object for the transaction."," */"," failure: function(transaction, config) {"," /**"," * Signals an HTTP response with status outside of the 2xx range."," * Fires after io:complete."," * @event io:failure"," */"," this._evt(EVENTS[4], transaction, config);"," this.end(transaction, config);"," },",""," /**"," * Fires event \"io:progress\" and creates, fires a transaction-specific"," * \"progress\" event -- for XMLHttpRequest file upload -- if"," * config.on.progress is defined."," *"," * @method progress"," * @param {Object} transaction Transaction object."," * @param {Object} progress event."," * @param {Object} config Configuration object for the transaction."," */"," progress: function(transaction, e, config) {"," /**"," * Signals the interactive state during a file upload transaction."," * This event fires after io:start and before io:complete."," * @event io:progress"," */"," transaction.evt = e;"," this._evt(EVENTS[5], transaction, config);"," },",""," /**"," * Fires event \"io:complete\" and creates, fires a transaction-specific"," * \"complete\" event -- for XMLHttpRequest file upload -- if"," * config.on.complete is defined."," *"," * @method load"," * @param {Object} transaction Transaction object."," * @param {Object} load event."," * @param {Object} config Configuration object for the transaction."," */"," load: function (transaction, e, config) {"," transaction.evt = e.target;"," this._evt(EVENTS[1], transaction, config);"," },",""," /**"," * Fires event \"io:failure\" and creates, fires a transaction-specific"," * \"failure\" event -- for XMLHttpRequest file upload -- if"," * config.on.failure is defined."," *"," * @method error"," * @param {Object} transaction Transaction object."," * @param {Object} error event."," * @param {Object} config Configuration object for the transaction."," */"," error: function (transaction, e, config) {"," transaction.evt = e;"," this._evt(EVENTS[4], transaction, config);"," },",""," /**"," * Retry an XDR transaction, using the Flash tranport, if the native"," * transport fails."," *"," * @method _retry"," * @private"," * @param {Object} transaction Transaction object."," * @param {String} uri Qualified path to transaction resource."," * @param {Object} config Configuration object for the transaction."," */"," _retry: function(transaction, uri, config) {"," this._destroy(transaction);"," config.xdr.use = 'flash';"," return this.send(uri, config, transaction.id);"," },",""," /**"," * Method that concatenates string data for HTTP GET transactions."," *"," * @method _concat"," * @private"," * @param {String} uri URI or root data."," * @param {String} data Data to be concatenated onto URI."," * @return {String}"," */"," _concat: function(uri, data) {"," uri += (uri.indexOf('?') === -1 ? '?' : '&') + data;"," return uri;"," },",""," /**"," * Stores default client headers for all transactions. If a label is"," * passed with no value argument, the header will be deleted."," *"," * @method setHeader"," * @param {String} name HTTP header"," * @param {String} value HTTP header value"," */"," setHeader: function(name, value) {"," if (value) {"," this._headers[name] = value;"," } else {"," delete this._headers[name];"," }"," },",""," /**"," * Method that sets all HTTP headers to be sent in a transaction."," *"," * @method _setHeaders"," * @private"," * @param {Object} transaction - XHR instance for the specific transaction."," * @param {Object} headers - HTTP headers for the specific transaction, as"," * defined in the configuration object passed to YUI.io()."," */"," _setHeaders: function(transaction, headers) {"," headers = Y.merge(this._headers, headers);"," Y.Object.each(headers, function(value, name) {"," if (value !== 'disable') {"," transaction.setRequestHeader(name, headers[name]);"," }"," });"," },",""," /**"," * Starts timeout count if the configuration object has a defined"," * timeout property."," *"," * @method _startTimeout"," * @private"," * @param {Object} transaction Transaction object generated by _create()."," * @param {Object} timeout Timeout in milliseconds."," */"," _startTimeout: function(transaction, timeout) {"," var io = this;",""," io._timeout[transaction.id] = setTimeout(function() {"," io._abort(transaction, 'timeout');"," }, timeout);"," },",""," /**"," * Clears the timeout interval started by _startTimeout()."," *"," * @method _clearTimeout"," * @private"," * @param {Number} id - Transaction id."," */"," _clearTimeout: function(id) {"," clearTimeout(this._timeout[id]);"," delete this._timeout[id];"," },",""," /**"," * Method that determines if a transaction response qualifies as success"," * or failure, based on the response HTTP status code, and fires the"," * appropriate success or failure events."," *"," * @method _result"," * @private"," * @static"," * @param {Object} transaction Transaction object generated by _create()."," * @param {Object} config Configuration object passed to io()."," */"," _result: function(transaction, config) {"," var status;"," // Firefox will throw an exception if attempting to access"," // an XHR object's status property, after a request is aborted."," try {"," status = transaction.c.status;"," } catch(e) {"," status = 0;"," }",""," // IE reports HTTP 204 as HTTP 1223."," if (status >= 200 && status < 300 || status === 304 || status === 1223) {"," this.success(transaction, config);"," } else {"," this.failure(transaction, config);"," }"," },",""," /**"," * Event handler bound to onreadystatechange."," *"," * @method _rS"," * @private"," * @param {Object} transaction Transaction object generated by _create()."," * @param {Object} config Configuration object passed to YUI.io()."," */"," _rS: function(transaction, config) {"," var io = this;",""," if (transaction.c.readyState === 4) {"," if (config.timeout) {"," io._clearTimeout(transaction.id);"," }",""," // Yield in the event of request timeout or abort."," setTimeout(function() {"," io.complete(transaction, config);"," io._result(transaction, config);"," }, 0);"," }"," },",""," /**"," * Terminates a transaction due to an explicit abort or timeout."," *"," * @method _abort"," * @private"," * @param {Object} transaction Transaction object generated by _create()."," * @param {String} type Identifies timed out or aborted transaction."," */"," _abort: function(transaction, type) {"," if (transaction && transaction.c) {"," transaction.e = type;"," transaction.c.abort();"," }"," },",""," /**"," * Requests a transaction. `send()` is implemented as `Y.io()`. Each"," * transaction may include a configuration object. Its properties are:"," *"," *
Callback functions for `start` and `end` receive the id of the"," * transaction as a first argument. For `complete`, `success`, and"," * `failure`, callbacks receive the id and the response object"," * (usually the XMLHttpRequest instance). If the `arguments`"," * property was included in the configuration object passed to"," * `Y.io()`, the configured data will be passed to all callbacks as"," * the last argument.
"," *Callback functions for `start` and `end` receive the id of the"," transaction as a first argument. For `complete`, `success`, and"," `failure`, callbacks receive the id and the response object"," (usually the XMLHttpRequest instance). If the `arguments`"," property was included in the configuration object passed to"," `Y.io()`, the configured data will be passed to all callbacks as"," the last argument.
","