/**
+ * @class Ext.Ajax
+ * @singleton
+ * @markdown
+ * @extends Ext.data.Connection
+
+A singleton instance of an {@link Ext.data.Connection}. This class
+is used to communicate with your server side code. It can be used as follows:
+
+ Ext.Ajax.request({
+ url: 'page.php',
+ params: {
+ id: 1
+ },
+ success: function(response){
+ var text = response.responseText;
+ // process server response here
+ }
+ });
+
+Default options for all requests can be set be changing a property on the Ext.Ajax class:
+
+ Ext.Ajax.timeout = 60000; // 60 seconds
+
+Any options specified in the request method for the Ajax request will override any
+defaults set on the Ext.Ajax class. In the code sample below, the timeout for the
+request will be 60 seconds.
+
+ Ext.Ajax.timeout = 120000; // 120 seconds
+ Ext.Ajax.request({
+ url: 'page.aspx',
+ timeout: 60000
+ });
+
+In general, this class will be used for all Ajax requests in your application.
+The main reason for creating a separate {@link Ext.data.Connection} is for a
+series of requests that share common settings that are different to all other
+requests in the application.
+
+ */
+Ext.define('Ext.Ajax', {
+ extend: 'Ext.data.Connection',
+ singleton: true,
+
+ /**
+ * @cfg {String} url @hide
+ */
+ /**
+ * @cfg {Object} extraParams @hide
+ */
+ /**
+ * @cfg {Object} defaultHeaders @hide
+ */
+ /**
+ * @cfg {String} method (Optional) @hide
+ */
+ /**
+ * @cfg {Number} timeout (Optional) @hide
+ */
+ /**
+ * @cfg {Boolean} autoAbort (Optional) @hide
+ */
+
+ /**
+ * @cfg {Boolean} disableCaching (Optional) @hide
+ */
+
+ /**
+ * @property disableCaching
+ * True to add a unique cache-buster param to GET requests. (defaults to true)
+ * @type Boolean
+ */
+ /**
+ * @property url
+ * The default URL to be used for requests to the server. (defaults to undefined)
+ * If the server receives all requests through one URL, setting this once is easier than
+ * entering it on every request.
+ * @type String
+ */
+ /**
+ * @property extraParams
+ * An object containing properties which are used as extra parameters to each request made
+ * by this object (defaults to undefined). Session information and other data that you need
+ * to pass with each request are commonly put here.
+ * @type Object
+ */
+ /**
+ * @property defaultHeaders
+ * An object containing request headers which are added to each request made by this object
+ * (defaults to undefined).
+ * @type Object
+ */
+ /**
+ * @property method
+ * The default HTTP method to be used for requests. Note that this is case-sensitive and
+ * should be all caps (defaults to undefined; if not set but params are present will use
+ * <tt>"POST"</tt>, otherwise will use <tt>"GET"</tt>.)
+ * @type String
+ */
+ /**
+ * @property timeout
+ * The timeout in milliseconds to be used for requests. (defaults to 30000)
+ * @type Number
+ */
+
+ /**
+ * @property autoAbort
+ * Whether a new request should abort any pending requests. (defaults to false)
+ * @type Boolean
+ */
+ autoAbort : false
+});