docs/source/JsonProvider.html

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  18   <pre class="prettyprint lang-js"><span id='Ext-direct-JsonProvider'>/**
  19 </span> * @class Ext.direct.JsonProvider
  20  * @extends Ext.direct.Provider
  21
  22 A base provider for communicating using JSON. This is an abstract class
  23 and should not be instanced directly.
  24
  25  * @markdown
  26  * @abstract
  27  */
  28
  29 Ext.define('Ext.direct.JsonProvider', {
  30
  31     /* Begin Definitions */
  32
  33     extend: 'Ext.direct.Provider',
  34
  35     alias: 'direct.jsonprovider',
  36
  37     uses: ['Ext.direct.ExceptionEvent'],
  38
  39     /* End Definitions */
  40
  41 <span id='Ext-direct-JsonProvider-method-parseResponse'>   /**
  42 </span>    * Parse the JSON response
  43     * @private
  44     * @param {Object} response The XHR response object
  45     * @return {Object} The data in the response.
  46     */
  47    parseResponse: function(response){
  48         if (!Ext.isEmpty(response.responseText)) {
  49             if (Ext.isObject(response.responseText)) {
  50                 return response.responseText;
  51             }
  52             return Ext.decode(response.responseText);
  53         }
  54         return null;
  55     },
  56
  57 <span id='Ext-direct-JsonProvider-method-createEvents'>    /**
  58 </span>     * Creates a set of events based on the XHR response
  59      * @private
  60      * @param {Object} response The XHR response
  61      * @return {Array} An array of Ext.direct.Event
  62      */
  63     createEvents: function(response){
  64         var data = null,
  65             events = [],
  66             event,
  67             i = 0,
  68             len;
  69
  70         try{
  71             data = this.parseResponse(response);
  72         } catch(e) {
  73             event = Ext.create('Ext.direct.ExceptionEvent', {
  74                 data: e,
  75                 xhr: response,
  76                 code: Ext.direct.Manager.self.exceptions.PARSE,
  77                 message: 'Error parsing json response: \n\n ' + data
  78             });
  79             return [event];
  80         }
  81
  82         if (Ext.isArray(data)) {
  83             for (len = data.length; i &lt; len; ++i) {
  84                 events.push(this.createEvent(data[i]));
  85             }
  86         } else {
  87             events.push(this.createEvent(data));
  88         }
  89         return events;
  90     },
  91
  92 <span id='Ext-direct-JsonProvider-method-createEvent'>    /**
  93 </span>     * Create an event from a response object
  94      * @param {Object} response The XHR response object
  95      * @return {Ext.direct.Event} The event
  96      */
  97     createEvent: function(response){
  98         return Ext.create('direct.' + response.type, response);
  99     }
 100 });</pre>
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