+ <div id="method-Ext.util.MixedCollection-reorder"></div>/**
+ * Reorders each of the items based on a mapping from old index to new index. Internally this
+ * just translates into a sort. The 'sort' event is fired whenever reordering has occured.
+ * @param {Object} mapping Mapping from old item index to new item index
+ */
+ reorder: function(mapping) {
+ this.suspendEvents();
+
+ var items = this.items,
+ index = 0,
+ length = items.length,
+ order = [],
+ remaining = [],
+ oldIndex;
+
+ //object of {oldPosition: newPosition} reversed to {newPosition: oldPosition}
+ for (oldIndex in mapping) {
+ order[mapping[oldIndex]] = items[oldIndex];
+ }
+
+ for (index = 0; index < length; index++) {
+ if (mapping[index] == undefined) {
+ remaining.push(items[index]);
+ }
+ }
+
+ for (index = 0; index < length; index++) {
+ if (order[index] == undefined) {
+ order[index] = remaining.shift();
+ }
+ }
+
+ this.clear();
+ this.addAll(order);
+
+ this.resumeEvents();
+ this.fireEvent('sort', this);
+ },
+