git-svn-id: https://msi/svn/firstRepo/WebClient/branches/Manut_2.2.3@25 0f545695-f87b-41b6-9a03-7f16563b5454

2015-01-25 13:57:37 +00:00
parent 1b92a374cc
commit d0d55ee8e5
19 changed files with 517 additions and 292 deletions
@@ -0,0 +1,54 @@
+/* 
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+define(['jquery', 'underscore', 'backbone', 'classes/cache'],
+        function ($, _, Backbone, Cache) {
+
+            var CachedCollection = Backbone.Collection.extend({
+                cacheName: null,
+                fetch: function (options) {
+                    options = _.defaults(options || {}, {parse: true});
+                    var deferred = new $.Deferred(),
+                            self = this;
+
+                    var cachedItem = Cache.get(this.cacheName);
+
+                    if (cachedItem !== null)
+                    {
+                        window.setTimeout(function () {
+                            self[options.reset ? 'reset' : 'set'](false, options);
+                            deferred.resolve(cachedItem);
+                            self.push(cachedItem);
+                            self.trigger('sync', self, false, options);
+                            if (_.isFunction(options.success)) {
+                                options.success(self, false, options);
+                            }                            
+                            return deferred;
+                        }, 0);
+                    }
+                    else
+                    {
+                        // Delegate to the actual fetch method and store the attributes in the cache
+                        var jqXHR = Backbone.Collection.prototype.fetch.apply(this, arguments);
+                        // resolve the returned promise when the AJAX call completes
+                        jqXHR.done(_.bind(deferred.resolve, this, this))
+                                // Set the new data in the cache
+                                .done(_.bind(
+                                        function (a, b, c) {
+                                            Cache.set(self.cacheName, a);
+                                        }
+                                , null, this, options))
+                                // Reject the promise on fail
+                                .fail(_.bind(deferred.reject, this, this));
+
+                        deferred.abort = jqXHR.abort;
+                        // return a promise which provides the same methods as a jqXHR object
+                        return deferred;
+                    }
+                }
+            });
+            return CachedCollection;
+        });