--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui_3.0.0b1/build/datasource/datasource-polling.js	Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,93 @@
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 3.0.0b1
+build: 1163
+*/
+YUI.add('datasource-polling', function(Y) {
+
+/**
+ * Extends DataSource with polling functionality.
+ *
+ * @module datasource
+ * @submodule datasource-polling
+ */
+    
+/**
+ * Adds polling to the DataSource Utility.
+ * @class Pollable
+ * @extends DataSource.Local
+ */    
+var LANG = Y.Lang,
+
+    Pollable = function() {
+        this._intervals = {};
+    };
+
+Pollable.prototype = {
+
+    /**
+    * @property _intervals
+    * @description Hash of polling interval IDs that have been enabled,
+    * stored here to be able to clear all intervals.
+    * @private
+    */
+    _intervals: null,
+
+    /**
+     * Sets up a polling mechanism to send requests at set intervals and forward
+     * responses to given callback.
+     *
+     * @method setInterval
+     * @param msec {Number} Length of interval in milliseconds.
+     * @param request {Object} Request object.
+     * @param callback {Object} An object literal with the following properties:
+     *     <dl>
+     *     <dt><code>success</code></dt>
+     *     <dd>The function to call when the data is ready.</dd>
+     *     <dt><code>failure</code></dt>
+     *     <dd>The function to call upon a response failure condition.</dd>
+     *     <dt><code>argument</code></dt>
+     *     <dd>Arbitrary data that will be passed back to the success and failure handlers.</dd>
+     *     </dl>
+     * @return {Number} Interval ID.
+     */
+    setInterval: function(msec, request, callback) {
+        var x = Y.later(msec, this, this.sendRequest, [request, callback], true);
+        this._intervals[x.id] = x;
+        return x.id;
+    },
+
+    /**
+     * Disables polling mechanism associated with the given interval ID.
+     *
+     * @method clearInterval
+     * @param id {Number} Interval ID.
+     */
+    clearInterval: function(id, key) {
+        // In case of being called by clearAllIntervals()
+        id = key || id;
+        if(this._intervals[id]) {
+            // Clear the interval
+            this._intervals[id].cancel();
+            // Clear from tracker
+            delete this._intervals[id];
+        }
+    },
+
+    /**
+     * Clears all intervals.
+     *
+     * @method clearAllIntervals
+     */
+    clearAllIntervals: function() {
+        Y.each(this._intervals, this.clearInterval, this);
+    }
+};
+    
+Y.augment(Y.DataSource.Local, Pollable);
+
+
+
+}, '3.0.0b1' ,{requires:['datasource-local']});