diff -r d334a616c023 -r e16a97fb364a src/cm/media/js/lib/yui/yui3-3.15.0/build/tree-lazy/tree-lazy-debug.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui3-3.15.0/build/tree-lazy/tree-lazy-debug.js	Mon Mar 10 15:19:48 2014 +0100
@@ -0,0 +1,176 @@
+YUI.add('tree-lazy', function (Y, NAME) {
+
+/*jshint expr:true, maxlen:200, onevar:false */
+
+/**
+Provides `Plugin.Tree.Lazy`, a plugin for `Tree.Openable` that makes it easy to
+lazily load and populate the contents of tree nodes the first time they're
+opened.
+
+@module tree
+@submodule tree-lazy
+**/
+
+/**
+A plugin for `Tree.Openable` that makes it easy to lazily load and populate the
+contents of tree nodes the first time they're opened.
+
+### Example
+
+    YUI().use('jsonp', 'tree-openable', 'tree-lazy', function (Y) {
+        var Tree = Y.Base.create('openableTree', Y.Tree, [Y.Tree.Openable]),
+            tree = new Tree();
+
+        tree.plug(Y.Plugin.Tree.Lazy, {
+
+            // Custom function that Plugin.Tree.Lazy will call when it needs to
+            // load the children for a node.
+            load: function (node, callback) {
+                // Request the data for this node's children via JSONP.
+                Y.jsonp('http://example.com/api/data?callback={callback}', function (data) {
+                    // If we didn't get any data back, treat this as an error.
+                    if (!data) {
+                        callback(new Error('No data!'));
+                        return;
+                    }
+
+                    // Append the children to the node (assume `data.children` is
+                    // an array of child node data for the sake of this example).
+                    node.append(data.children);
+
+                    // Call the callback function to tell Plugin.Tree.Lazy that
+                    // we're done loading data.
+                    callback();
+                });
+            }
+
+        });
+    });
+
+@class Plugin.Tree.Lazy
+@param {Object} config Config object.
+
+    @param {Function} config.load Custom `load()` function that will be called
+        when a node's children need to be loaded. This function must call the
+        provided callback to indicate completion.
+
+        @param {Function} config.load.callback Callback function. The custom
+            `load()` function must call this callback to indicate completion.
+
+            @param {Error} [config.load.callback.err] Error object. If provided,
+                the load action will be considered a failure, and an `error`
+                event will be fired. Omit this argument (or set it to `null`) to
+                indicate success.
+
+@extends Plugin.Base
+@constructor
+**/
+
+/**
+Fired just before the custom `load()` method is called to load child nodes for a
+node.
+
+Calling `preventDefault()` on this event's facade will cancel the load action
+and prevent the `load()` method from being called.
+
+@event beforeLoad
+@param {Tree.Node} node Tree node whose children will be loaded.
+@preventable _defBeforeLoadFn
+**/
+var EVT_BEFORE_LOAD = 'beforeLoad';
+
+/**
+Fired when the `load()` method indicates there was an error loading child nodes.
+
+@event error
+@param {Error} error Error provided by the `load()` method.
+@param {String} src Source of the error (defaults to "load").
+**/
+var EVT_ERROR = 'error';
+
+/**
+Fired after child nodes have finished loading and have been added to the tree.
+
+@event load
+@param {Tree.Node} node Tree node whose children have been loaded.
+**/
+var EVT_LOAD = 'load';
+
+Y.namespace('Plugin.Tree').Lazy = Y.Base.create('lazyTreePlugin', Y.Plugin.Base, [], {
+    // -- Lifecycle Methods ----------------------------------------------------
+    initializer: function (config) {
+        this._host = config.host;
+
+        if (config.load) {
+            this.load = config.load;
+        }
+
+        // Make sure we've been plugged into a Tree that mixes in the
+        // Tree.Openable extension.
+        if (!this._host.openNode) {
+            Y.log("Plugin.Tree.Lazy was plugged into a Tree that doesn't mix in the Tree.Openable extension. This probably won't do you much good.", 'warn', 'tree-lazy');
+        }
+
+        this._published = {};
+        this._attachEvents();
+    },
+
+    // -- Public Methods -------------------------------------------------------
+    load: function (node, callback) {
+        callback(new Error('Plugin.Tree.Lazy: Please provide a custom `load` method when instantiating this plugin.'));
+    },
+
+    // -- Protected Methods ----------------------------------------------------
+    _attachEvents: function () {
+        this.onHostEvent('open', this._onOpen);
+    },
+
+    // -- Protected Event Handlers ---------------------------------------------
+    _onOpen: function (e) {
+        var node = e.node;
+
+        // Nothing to do if this node can't have children or if its children
+        // have already been (or are already being) loaded.
+        if (!node.canHaveChildren || node.state.loaded || node.state.loading) {
+            return;
+        }
+
+        if (!this._published[EVT_BEFORE_LOAD]) {
+            this._published[EVT_BEFORE_LOAD] = this.publish(EVT_BEFORE_LOAD, {
+                defaultFn: this._defLoadingFn
+            });
+        }
+
+        this.fire(EVT_BEFORE_LOAD, {node: node});
+    },
+
+    // -- Default Event Handlers -----------------------------------------------
+    _defLoadingFn: function (e) {
+        var node = e.node,
+            self = this;
+
+        node.state.loading = true;
+
+        this.load(node, function (err) {
+            delete node.state.loading;
+
+            if (err) {
+                self.fire(EVT_ERROR, {
+                    error: err,
+                    src  : 'load'
+                });
+
+                return;
+            }
+
+            node.state.loaded = true;
+
+            self.fire(EVT_LOAD, {node: node});
+        });
+    }
+}, {
+    NS: 'lazy'
+});
+
+
+}, '@VERSION@', {"requires": ["base-pluginhost", "plugin", "tree"]});