diff options
author | Richard Beales <[email protected]> | 2013-03-18 07:32:01 +0000 |
---|---|---|
committer | Richard Beales <[email protected]> | 2013-03-18 07:32:01 +0000 |
commit | 7c97d17aaf373339a8bcd917ad59ca6018148f0d (patch) | |
tree | 5a3c04f0f9529be392c1263d3feb75806eb43797 /lib/dojo/request/xhr.js.uncompressed.js | |
parent | 70db7424e7068701e60cc5bcdfe8f858be508179 (diff) | |
parent | c670a80ddd9b03bd4ea6d940a9ed682fd26248d7 (diff) |
Merge remote-tracking branch 'upstream/master'
Diffstat (limited to 'lib/dojo/request/xhr.js.uncompressed.js')
-rw-r--r-- | lib/dojo/request/xhr.js.uncompressed.js | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/lib/dojo/request/xhr.js.uncompressed.js b/lib/dojo/request/xhr.js.uncompressed.js new file mode 100644 index 000000000..620fac3b1 --- /dev/null +++ b/lib/dojo/request/xhr.js.uncompressed.js @@ -0,0 +1,316 @@ +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; +}); |