+++ /dev/null
-define("dojo/request/xhr", [
- '../errors/RequestError',
- './watch',
- './handlers',
- './util',
- '../has'/*=====,
- '../request',
- '../_base/declare' =====*/
-], function(RequestError, watch, handlers, util, has/*=====, request, declare =====*/){
- has.add('native-xhr', function(){
- // if true, the environment has a native XHR implementation
- return typeof XMLHttpRequest !== 'undefined';
- });
- has.add('dojo-force-activex-xhr', function(){
- return has('activex') && !document.addEventListener && window.location.protocol === 'file:';
- });
-
- has.add('native-xhr2', function(){
- if(!has('native-xhr')){ return; }
- var x = new XMLHttpRequest();
- return typeof x['addEventListener'] !== 'undefined' &&
- (typeof opera === 'undefined' || typeof x['upload'] !== 'undefined');
- });
-
- has.add('native-formdata', function(){
- // if true, the environment has a native FormData implementation
- return typeof FormData === 'function';
- });
-
- function handleResponse(response, error){
- var _xhr = response.xhr;
- response.status = response.xhr.status;
- response.text = _xhr.responseText;
-
- if(response.options.handleAs === 'xml'){
- response.data = _xhr.responseXML;
- }
-
- if(!error){
- try{
- handlers(response);
- }catch(e){
- error = e;
- }
- }
-
- if(error){
- this.reject(error);
- }else if(util.checkStatus(_xhr.status)){
- this.resolve(response);
- }else{
- error = new RequestError('Unable to load ' + response.url + ' status: ' + _xhr.status, response);
-
- this.reject(error);
- }
- }
-
- var isValid, isReady, addListeners, cancel;
- if(has('native-xhr2')){
- // Any platform with XHR2 will only use the watch mechanism for timeout.
-
- isValid = function(response){
- // summary:
- // Check to see if the request should be taken out of the watch queue
- return !this.isFulfilled();
- };
- cancel = function(dfd, response){
- // summary:
- // Canceler for deferred
- response.xhr.abort();
- };
- addListeners = function(_xhr, dfd, response){
- // summary:
- // Adds event listeners to the XMLHttpRequest object
- function onLoad(evt){
- dfd.handleResponse(response);
- }
- function onError(evt){
- var _xhr = evt.target;
- var error = new RequestError('Unable to load ' + response.url + ' status: ' + _xhr.status, response);
- dfd.handleResponse(response, error);
- }
-
- function onProgress(evt){
- if(evt.lengthComputable){
- response.loaded = evt.loaded;
- response.total = evt.total;
- dfd.progress(response);
- }
- }
-
- _xhr.addEventListener('load', onLoad, false);
- _xhr.addEventListener('error', onError, false);
- _xhr.addEventListener('progress', onProgress, false);
-
- return function(){
- _xhr.removeEventListener('load', onLoad, false);
- _xhr.removeEventListener('error', onError, false);
- _xhr.removeEventListener('progress', onProgress, false);
- };
- };
- }else{
- isValid = function(response){
- return response.xhr.readyState; //boolean
- };
- isReady = function(response){
- return 4 === response.xhr.readyState; //boolean
- };
- cancel = function(dfd, response){
- // summary:
- // canceller function for util.deferred call.
- var xhr = response.xhr;
- var _at = typeof xhr.abort;
- if(_at === 'function' || _at === 'object' || _at === 'unknown'){
- xhr.abort();
- }
- };
- }
-
- var undefined,
- defaultOptions = {
- data: null,
- query: null,
- sync: false,
- method: 'GET',
- headers: {
- 'Content-Type': 'application/x-www-form-urlencoded'
- }
- };
- function xhr(url, options, returnDeferred){
- var response = util.parseArgs(
- url,
- util.deepCreate(defaultOptions, options),
- has('native-formdata') && options && options.data && options.data instanceof FormData
- );
- url = response.url;
- options = response.options;
-
- var remover,
- last = function(){
- remover && remover();
- };
-
- //Make the Deferred object for this xhr request.
- var dfd = util.deferred(
- response,
- cancel,
- isValid,
- isReady,
- handleResponse,
- last
- );
- var _xhr = response.xhr = xhr._create();
-
- if(!_xhr){
- // If XHR factory somehow returns nothings,
- // cancel the deferred.
- dfd.cancel(new RequestError('XHR was not created'));
- return returnDeferred ? dfd : dfd.promise;
- }
-
- response.getHeader = function(headerName){
- return this.xhr.getResponseHeader(headerName);
- };
-
- if(addListeners){
- remover = addListeners(_xhr, dfd, response);
- }
-
- var data = options.data,
- async = !options.sync,
- method = options.method;
-
- try{
- // IE6 won't let you call apply() on the native function.
- _xhr.open(method, url, async, options.user || undefined, options.password || undefined);
-
- if(options.withCredentials){
- _xhr.withCredentials = options.withCredentials;
- }
-
- var headers = options.headers,
- contentType;
- if(headers){
- for(var hdr in headers){
- if(hdr.toLowerCase() === 'content-type'){
- contentType = headers[hdr];
- }else if(headers[hdr]){
- //Only add header if it has a value. This allows for instance, skipping
- //insertion of X-Requested-With by specifying empty value.
- _xhr.setRequestHeader(hdr, headers[hdr]);
- }
- }
- }
-
- if(contentType && contentType !== false){
- _xhr.setRequestHeader('Content-Type', contentType);
- }
- if(!headers || !('X-Requested-With' in headers)){
- _xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
- }
-
- if(util.notify){
- util.notify.emit('send', response, dfd.promise.cancel);
- }
- _xhr.send(data);
- }catch(e){
- dfd.reject(e);
- }
-
- watch(dfd);
- _xhr = null;
-
- return returnDeferred ? dfd : dfd.promise;
- }
-
- /*=====
- xhr = function(url, options){
- // summary:
- // Sends a request using XMLHttpRequest with the given URL and options.
- // url: String
- // URL to request
- // options: dojo/request/xhr.__Options?
- // Options for the request.
- // returns: dojo/request.__Promise
- };
- xhr.__BaseOptions = declare(request.__BaseOptions, {
- // sync: Boolean?
- // Whether to make a synchronous request or not. Default
- // is `false` (asynchronous).
- // data: String|Object|FormData?
- // Data to transfer. This is ignored for GET and DELETE
- // requests.
- // headers: Object?
- // Headers to use for the request.
- // user: String?
- // Username to use during the request.
- // password: String?
- // Password to use during the request.
- // withCredentials: Boolean?
- // For cross-site requests, whether to send credentials
- // or not.
- });
- xhr.__MethodOptions = declare(null, {
- // method: String?
- // The HTTP method to use to make the request. Must be
- // uppercase. Default is `"GET"`.
- });
- xhr.__Options = declare([xhr.__BaseOptions, xhr.__MethodOptions]);
-
- xhr.get = function(url, options){
- // summary:
- // Send an HTTP GET request using XMLHttpRequest with the given URL and options.
- // url: String
- // URL to request
- // options: dojo/request/xhr.__BaseOptions?
- // Options for the request.
- // returns: dojo/request.__Promise
- };
- xhr.post = function(url, options){
- // summary:
- // Send an HTTP POST request using XMLHttpRequest with the given URL and options.
- // url: String
- // URL to request
- // options: dojo/request/xhr.__BaseOptions?
- // Options for the request.
- // returns: dojo/request.__Promise
- };
- xhr.put = function(url, options){
- // summary:
- // Send an HTTP PUT request using XMLHttpRequest with the given URL and options.
- // url: String
- // URL to request
- // options: dojo/request/xhr.__BaseOptions?
- // Options for the request.
- // returns: dojo/request.__Promise
- };
- xhr.del = function(url, options){
- // summary:
- // Send an HTTP DELETE request using XMLHttpRequest with the given URL and options.
- // url: String
- // URL to request
- // options: dojo/request/xhr.__BaseOptions?
- // Options for the request.
- // returns: dojo/request.__Promise
- };
- =====*/
- xhr._create = function(){
- // summary:
- // does the work of portably generating a new XMLHTTPRequest object.
- throw new Error('XMLHTTP not available');
- };
- if(has('native-xhr') && !has('dojo-force-activex-xhr')){
- xhr._create = function(){
- return new XMLHttpRequest();
- };
- }else if(has('activex')){
- try{
- new ActiveXObject('Msxml2.XMLHTTP');
- xhr._create = function(){
- return new ActiveXObject('Msxml2.XMLHTTP');
- };
- }catch(e){
- try{
- new ActiveXObject('Microsoft.XMLHTTP');
- xhr._create = function(){
- return new ActiveXObject('Microsoft.XMLHTTP');
- };
- }catch(e){}
- }
- }
-
- util.addCommonMethods(xhr);
-
- return xhr;
-});
git.wh0rd.org / tt-rss.git / blobdiff