*/
/**
- * @class Ext.data.Connection
* The Connection class encapsulates a connection to the page's originating domain, allowing requests to be made either
* to a configured URL, or to a URL specified at request time.
*
* to the statement immediately following the {@link #request} call. To process returned data, use a success callback
* in the request options object, or an {@link #requestcomplete event listener}.
*
- * <p><u>File Uploads</u></p>
+ * # File Uploads
*
* File uploads are not performed using normal "Ajax" techniques, that is they are not performed using XMLHttpRequests.
* Instead the form is submitted in the standard manner with the DOM <form> element temporarily modified to have its
* send the return object, then the Content-Type header must be set to "text/html" in order to tell the browser to
* insert the text unchanged into the document body.
*
- * Characters which are significant to an HTML parser must be sent as HTML entities, so encode "<" as "&lt;", "&" as
- * "&amp;" etc.
+ * Characters which are significant to an HTML parser must be sent as HTML entities, so encode `<` as `<`, `&` as
+ * `&` etc.
*
* The response text is retrieved from the document, and a fake XMLHttpRequest object is created containing a
* responseText property in order to conform to the requirements of event handlers and callbacks.
password: '',
/**
- * @cfg {Boolean} disableCaching (Optional) True to add a unique cache-buster param to GET requests. (defaults to true)
+ * @cfg {Boolean} disableCaching
+ * True to add a unique cache-buster param to GET requests.
*/
disableCaching: true,
/**
- * @cfg {String} disableCachingParam (Optional) Change the parameter which is sent went disabling caching
- * through a cache buster. Defaults to '_dc'
+ * @cfg {Boolean} withCredentials
+ * True to set `withCredentials = true` on the XHR object
+ */
+ withCredentials: false,
+
+ /**
+ * @cfg {Boolean} cors
+ * True to enable CORS support on the XHR object. Currently the only effect of this option
+ * is to use the XDomainRequest object instead of XMLHttpRequest if the browser is IE8 or above.
+ */
+ cors: false,
+
+ /**
+ * @cfg {String} disableCachingParam
+ * Change the parameter which is sent went disabling caching through a cache buster.
*/
disableCachingParam: '_dc',
/**
- * @cfg {Number} timeout (Optional) The timeout in milliseconds to be used for requests. (defaults to 30000)
+ * @cfg {Number} timeout
+ * The timeout in milliseconds to be used for requests.
*/
timeout : 30000,
/**
- * @cfg {Object} extraParams (Optional) Any parameters to be appended to the request.
+ * @cfg {Object} extraParams
+ * Any parameters to be appended to the request.
*/
useDefaultHeader : true,
/**
* @event beforerequest
* Fires before a network request is made to retrieve a data object.
- * @param {Connection} conn This Connection object.
+ * @param {Ext.data.Connection} conn This Connection object.
* @param {Object} options The options config object passed to the {@link #request} method.
*/
'beforerequest',
/**
* @event requestcomplete
* Fires if the request was successfully completed.
- * @param {Connection} conn This Connection object.
+ * @param {Ext.data.Connection} conn This Connection object.
* @param {Object} response The XHR object containing the response data.
- * See <a href="http://www.w3.org/TR/XMLHttpRequest/">The XMLHttpRequest Object</a>
- * for details.
+ * See [The XMLHttpRequest Object](http://www.w3.org/TR/XMLHttpRequest/) for details.
* @param {Object} options The options config object passed to the {@link #request} method.
*/
'requestcomplete',
/**
* @event requestexception
* Fires if an error HTTP status was returned from the server.
- * See <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html">HTTP Status Code Definitions</a>
+ * See [HTTP Status Code Definitions](http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html)
* for details of HTTP status codes.
- * @param {Connection} conn This Connection object.
+ * @param {Ext.data.Connection} conn This Connection object.
* @param {Object} response The XHR object containing the response data.
- * See <a href="http://www.w3.org/TR/XMLHttpRequest/">The XMLHttpRequest Object</a>
- * for details.
+ * See [The XMLHttpRequest Object](http://www.w3.org/TR/XMLHttpRequest/) for details.
* @param {Object} options The options config object passed to the {@link #request} method.
*/
'requestexception'
},
/**
- * <p>Sends an HTTP request to a remote server.</p>
- * <p><b>Important:</b> Ajax server requests are asynchronous, and this call will
+ * Sends an HTTP request to a remote server.
+ *
+ * **Important:** Ajax server requests are asynchronous, and this call will
* return before the response has been received. Process any returned data
- * in a callback function.</p>
- * <pre><code>
-Ext.Ajax.request({
-url: 'ajax_demo/sample.json',
-success: function(response, opts) {
- var obj = Ext.decode(response.responseText);
- console.dir(obj);
-},
-failure: function(response, opts) {
- console.log('server-side failure with status code ' + response.status);
-}
-});
- * </code></pre>
- * <p>To execute a callback function in the correct scope, use the <tt>scope</tt> option.</p>
- * @param {Object} options An object which may contain the following properties:<ul>
- * <li><b>url</b> : String/Function (Optional)<div class="sub-desc">The URL to
- * which to send the request, or a function to call which returns a URL string. The scope of the
- * function is specified by the <tt>scope</tt> option. Defaults to the configured
- * <tt>{@link #url}</tt>.</div></li>
- * <li><b>params</b> : Object/String/Function (Optional)<div class="sub-desc">
- * An object containing properties which are used as parameters to the
- * request, a url encoded string or a function to call to get either. The scope of the function
- * is specified by the <tt>scope</tt> option.</div></li>
- * <li><b>method</b> : String (Optional)<div class="sub-desc">The HTTP method to use
+ * in a callback function.
+ *
+ * Ext.Ajax.request({
+ * url: 'ajax_demo/sample.json',
+ * success: function(response, opts) {
+ * var obj = Ext.decode(response.responseText);
+ * console.dir(obj);
+ * },
+ * failure: function(response, opts) {
+ * console.log('server-side failure with status code ' + response.status);
+ * }
+ * });
+ *
+ * To execute a callback function in the correct scope, use the `scope` option.
+ *
+ * @param {Object} options An object which may contain the following properties:
+ *
+ * (The options object may also contain any other property which might be needed to perform
+ * postprocessing in a callback because it is passed to callback functions.)
+ *
+ * @param {String/Function} options.url The URL to which to send the request, or a function
+ * to call which returns a URL string. The scope of the function is specified by the `scope` option.
+ * Defaults to the configured `url`.
+ *
+ * @param {Object/String/Function} options.params An object containing properties which are
+ * used as parameters to the request, a url encoded string or a function to call to get either. The scope
+ * of the function is specified by the `scope` option.
+ *
+ * @param {String} options.method The HTTP method to use
* for the request. Defaults to the configured method, or if no method was configured,
* "GET" if no parameters are being sent, and "POST" if parameters are being sent. Note that
- * the method name is case-sensitive and should be all caps.</div></li>
- * <li><b>callback</b> : Function (Optional)<div class="sub-desc">The
- * function to be called upon receipt of the HTTP response. The callback is
- * called regardless of success or failure and is passed the following
- * parameters:<ul>
- * <li><b>options</b> : Object<div class="sub-desc">The parameter to the request call.</div></li>
- * <li><b>success</b> : Boolean<div class="sub-desc">True if the request succeeded.</div></li>
- * <li><b>response</b> : Object<div class="sub-desc">The XMLHttpRequest object containing the response data.
- * See <a href="http://www.w3.org/TR/XMLHttpRequest/">http://www.w3.org/TR/XMLHttpRequest/</a> for details about
- * accessing elements of the response.</div></li>
- * </ul></div></li>
- * <li><a id="request-option-success"></a><b>success</b> : Function (Optional)<div class="sub-desc">The function
- * to be called upon success of the request. The callback is passed the following
- * parameters:<ul>
- * <li><b>response</b> : Object<div class="sub-desc">The XMLHttpRequest object containing the response data.</div></li>
- * <li><b>options</b> : Object<div class="sub-desc">The parameter to the request call.</div></li>
- * </ul></div></li>
- * <li><b>failure</b> : Function (Optional)<div class="sub-desc">The function
- * to be called upon failure of the request. The callback is passed the
- * following parameters:<ul>
- * <li><b>response</b> : Object<div class="sub-desc">The XMLHttpRequest object containing the response data.</div></li>
- * <li><b>options</b> : Object<div class="sub-desc">The parameter to the request call.</div></li>
- * </ul></div></li>
- * <li><b>scope</b> : Object (Optional)<div class="sub-desc">The scope in
- * which to execute the callbacks: The "this" object for the callback function. If the <tt>url</tt>, or <tt>params</tt> options were
- * specified as functions from which to draw values, then this also serves as the scope for those function calls.
- * Defaults to the browser window.</div></li>
- * <li><b>timeout</b> : Number (Optional)<div class="sub-desc">The timeout in milliseconds to be used for this request. Defaults to 30 seconds.</div></li>
- * <li><b>form</b> : Element/HTMLElement/String (Optional)<div class="sub-desc">The <tt><form></tt>
- * Element or the id of the <tt><form></tt> to pull parameters from.</div></li>
- * <li><a id="request-option-isUpload"></a><b>isUpload</b> : Boolean (Optional)<div class="sub-desc"><b>Only meaningful when used
- * with the <tt>form</tt> option</b>.
- * <p>True if the form object is a file upload (will be set automatically if the form was
- * configured with <b><tt>enctype</tt></b> "multipart/form-data").</p>
- * <p>File uploads are not performed using normal "Ajax" techniques, that is they are <b>not</b>
+ * the method name is case-sensitive and should be all caps.
+ *
+ * @param {Function} options.callback The function to be called upon receipt of the HTTP response.
+ * The callback is called regardless of success or failure and is passed the following parameters:
+ * @param {Object} options.callback.options The parameter to the request call.
+ * @param {Boolean} options.callback.success True if the request succeeded.
+ * @param {Object} options.callback.response The XMLHttpRequest object containing the response data.
+ * See [www.w3.org/TR/XMLHttpRequest/](http://www.w3.org/TR/XMLHttpRequest/) for details about
+ * accessing elements of the response.
+ *
+ * @param {Function} options.success The function to be called upon success of the request.
+ * The callback is passed the following parameters:
+ * @param {Object} options.success.response The XMLHttpRequest object containing the response data.
+ * @param {Object} options.success.options The parameter to the request call.
+ *
+ * @param {Function} options.failure The function to be called upon success of the request.
+ * The callback is passed the following parameters:
+ * @param {Object} options.failure.response The XMLHttpRequest object containing the response data.
+ * @param {Object} options.failure.options The parameter to the request call.
+ *
+ * @param {Object} options.scope The scope in which to execute the callbacks: The "this" object for
+ * the callback function. If the `url`, or `params` options were specified as functions from which to
+ * draw values, then this also serves as the scope for those function calls. Defaults to the browser
+ * window.
+ *
+ * @param {Number} options.timeout The timeout in milliseconds to be used for this request.
+ * Defaults to 30 seconds.
+ *
+ * @param {Ext.Element/HTMLElement/String} options.form The `<form>` Element or the id of the `<form>`
+ * to pull parameters from.
+ *
+ * @param {Boolean} options.isUpload **Only meaningful when used with the `form` option.**
+ *
+ * True if the form object is a file upload (will be set automatically if the form was configured
+ * with **`enctype`** `"multipart/form-data"`).
+ *
+ * File uploads are not performed using normal "Ajax" techniques, that is they are **not**
* performed using XMLHttpRequests. Instead the form is submitted in the standard manner with the
- * DOM <tt><form></tt> element temporarily modified to have its
- * <a href="http://www.w3.org/TR/REC-html40/present/frames.html#adef-target">target</a> set to refer
- * to a dynamically generated, hidden <tt><iframe></tt> which is inserted into the document
- * but removed after the return data has been gathered.</p>
- * <p>The server response is parsed by the browser to create the document for the IFRAME. If the
- * server is using JSON to send the return object, then the
- * <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17">Content-Type</a> header
- * must be set to "text/html" in order to tell the browser to insert the text unchanged into the document body.</p>
- * <p>The response text is retrieved from the document, and a fake XMLHttpRequest object
- * is created containing a <tt>responseText</tt> property in order to conform to the
- * requirements of event handlers and callbacks.</p>
- * <p>Be aware that file upload packets are sent with the content type <a href="http://www.faqs.org/rfcs/rfc2388.html">multipart/form</a>
- * and some server technologies (notably JEE) may require some custom processing in order to
- * retrieve parameter names and parameter values from the packet content.</p>
- * </div></li>
- * <li><b>headers</b> : Object (Optional)<div class="sub-desc">Request
- * headers to set for the request.</div></li>
- * <li><b>xmlData</b> : Object (Optional)<div class="sub-desc">XML document
- * to use for the post. Note: This will be used instead of params for the post
- * data. Any params will be appended to the URL.</div></li>
- * <li><b>jsonData</b> : Object/String (Optional)<div class="sub-desc">JSON
- * data to use as the post. Note: This will be used instead of params for the post
- * data. Any params will be appended to the URL.</div></li>
- * <li><b>disableCaching</b> : Boolean (Optional)<div class="sub-desc">True
- * to add a unique cache-buster param to GET requests.</div></li>
- * </ul></p>
- * <p>The options object may also contain any other property which might be needed to perform
- * postprocessing in a callback because it is passed to callback functions.</p>
- * @return {Object} request The request object. This may be used
- * to cancel the request.
+ * DOM `<form>` element temporarily modified to have its [target][] set to refer to a dynamically
+ * generated, hidden `<iframe>` which is inserted into the document but removed after the return data
+ * has been gathered.
+ *
+ * The server response is parsed by the browser to create the document for the IFRAME. If the
+ * server is using JSON to send the return object, then the [Content-Type][] header must be set to
+ * "text/html" in order to tell the browser to insert the text unchanged into the document body.
+ *
+ * The response text is retrieved from the document, and a fake XMLHttpRequest object is created
+ * containing a `responseText` property in order to conform to the requirements of event handlers
+ * and callbacks.
+ *
+ * Be aware that file upload packets are sent with the content type [multipart/form][] and some server
+ * technologies (notably JEE) may require some custom processing in order to retrieve parameter names
+ * and parameter values from the packet content.
+ *
+ * [target]: http://www.w3.org/TR/REC-html40/present/frames.html#adef-target
+ * [Content-Type]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17
+ * [multipart/form]: http://www.faqs.org/rfcs/rfc2388.html
+ *
+ * @param {Object} options.headers Request headers to set for the request.
+ *
+ * @param {Object} options.xmlData XML document to use for the post. Note: This will be used instead
+ * of params for the post data. Any params will be appended to the URL.
+ *
+ * @param {Object/String} options.jsonData JSON data to use as the post. Note: This will be used
+ * instead of params for the post data. Any params will be appended to the URL.
+ *
+ * @param {Boolean} options.disableCaching True to add a unique cache-buster param to GET requests.
+ *
+ * @param {Boolean} options.withCredentials True to add the withCredentials property to the XHR object
+ *
+ * @return {Object} The request object. This may be used to cancel the request.
*/
request : function(options) {
options = options || {};
}
// create a connection object
- xhr = this.getXhrInstance();
+
+ if ((options.cors === true || me.cors === true) && Ext.isIe && Ext.ieVersion >= 8) {
+ xhr = new XDomainRequest();
+ } else {
+ xhr = this.getXhrInstance();
+ }
async = options.async !== false ? (options.async || me.async) : false;
xhr.open(requestOptions.method, requestOptions.url, async);
}
+ if (options.withCredentials === true || me.withCredentials === true) {
+ xhr.withCredentials = true;
+ }
+
headers = me.setupHeaders(xhr, options, requestOptions.data, requestOptions.params);
// create the transaction object
}, options.timeout || me.timeout)
};
me.requests[request.id] = request;
-
+ me.latestId = request.id;
// bind our statechange listener
if (async) {
xhr.onreadystatechange = Ext.Function.bind(me.onStateChange, me, [request]);
},
/**
- * Upload a form using a hidden iframe.
- * @param {Mixed} form The form to upload
+ * Uploads a form using a hidden iframe.
+ * @param {String/HTMLElement/Ext.Element} form The form to upload
* @param {String} url The url to post to
* @param {String} params Any extra parameters to pass
* @param {Object} options The initial options
*/
- upload: function(form, url, params, options){
+ upload: function(form, url, params, options) {
form = Ext.getDom(form);
options = options || {};
});
},
- onUploadComplete: function(frame, options){
+ /**
+ * @private
+ * Callback handler for the upload function. After we've submitted the form via the iframe this creates a bogus
+ * response object to simulate an XHR and populates its responseText from the now-loaded iframe's document body
+ * (or a textarea inside the body). We then clean up by removing the iframe
+ */
+ onUploadComplete: function(frame, options) {
var me = this,
// bogus response object
response = {
}, doc, firstChild;
try {
- doc = frame.contentWindow.document || frame.contentDocument || window.frames[id].document;
+ doc = frame.contentWindow.document || frame.contentDocument || window.frames[frame.id].document;
if (doc) {
if (doc.body) {
if (/textarea/i.test((firstChild = doc.body.firstChild || {}).tagName)) { // json response wrapped in textarea
},
/**
- * Detect whether the form is intended to be used for an upload.
+ * Detects whether the form is intended to be used for an upload.
* @private
*/
isFormUpload: function(options){
},
/**
- * Get the form object from options.
+ * Gets the form object from options.
* @private
* @param {Object} options The request options
* @return {HTMLElement} The form, null if not passed
},
/**
- * Set various options such as the url, params for the request
+ * Sets various options such as the url, params for the request
* @param {Object} options The initial options
* @param {Object} scope The scope to execute in
* @return {Object} The params for the request
/**
* Template method for overriding url
+ * @template
* @private
* @param {Object} options
* @param {String} url
/**
* Template method for overriding params
+ * @template
* @private
* @param {Object} options
* @param {String} params
var form = this.getForm(options),
serializedForm;
if (form && !this.isFormUpload(options)) {
- serializedForm = Ext.core.Element.serializeForm(form);
+ serializedForm = Ext.Element.serializeForm(form);
params = params ? (params + '&' + serializedForm) : serializedForm;
}
return params;
/**
* Template method for overriding method
+ * @template
* @private
* @param {Object} options
* @param {String} method
})(),
/**
- * Determine whether this object has a request outstanding.
- * @param {Object} request (Optional) defaults to the last transaction
+ * Determines whether this object has a request outstanding.
+ * @param {Object} [request] Defaults to the last transaction
* @return {Boolean} True if there is an outstanding request.
*/
isLoading : function(request) {
+ if (!request) {
+ request = this.getLatest();
+ }
if (!(request && request.xhr)) {
return false;
}
},
/**
- * Aborts any outstanding request.
- * @param {Object} request (Optional) defaults to the last request
+ * Aborts an active request.
+ * @param {Object} [request] Defaults to the last request
*/
abort : function(request) {
- var me = this,
- requests = me.requests,
- id;
+ var me = this;
+
+ if (!request) {
+ request = me.getLatest();
+ }
if (request && me.isLoading(request)) {
/*
}
me.onComplete(request);
me.cleanup(request);
- } else if (!request) {
- for(id in requests) {
- if (requests.hasOwnProperty(id)) {
- me.abort(requests[id]);
- }
+ }
+ },
+
+ /**
+ * Aborts all active requests
+ */
+ abortAll: function(){
+ var requests = this.requests,
+ id;
+
+ for (id in requests) {
+ if (requests.hasOwnProperty(id)) {
+ this.abort(requests[id]);
}
}
},
+
+ /**
+ * Gets the most recent request
+ * @private
+ * @return {Object} The request. Null if there is no recent request
+ */
+ getLatest: function(){
+ var id = this.latestId,
+ request;
+
+ if (id) {
+ request = this.requests[id];
+ }
+ return request || null;
+ },
/**
* Fires when the state of the xhr changes
},
/**
- * Clear the timeout on the request
+ * Clears the timeout on the request
* @private
* @param {Object} The request
*/
},
/**
- * Clean up any left over information from the request
+ * Cleans up any left over information from the request
* @private
* @param {Object} The request
*/
result,
success,
response;
-
+
try {
result = me.parseStatus(request.xhr.status);
} catch (e) {
// in some browsers we can't access the status if the readyState is not 4, so the request has failed
result = {
- success : false,
- isException : false
+ success : false,
+ isException : false
};
}
success = result.success;
},
/**
- * Check if the response status was successful
+ * Checks if the response status was successful
* @param {Number} status The status code
* @return {Object} An object containing success/status state
*/
},
/**
- * Create the response object
+ * Creates the response object
* @private
* @param {Object} request
*/
},
/**
- * Create the exception object
+ * Creates the exception object
* @private
* @param {Object} request
*/
git.ithinksw.org / extjs.git / blobdiff