The MultiSelect extension

Ext.ux.form.MultiSelect is a form field type which allows the selection of one or more items from a list. A list is populated using a data store. Items can be reordered via the drag-and-drop method, if the ddReorder property of this class is set to true.

Here, in the following code, a form panel class has been defined, in which the MultiSelect extension has been used as an item of this form:

Ext.define('Examples.view.multiselect.MultiSelectFormPanel', {
  extend : 'Ext.form.Panel',
  alias : 'widget.multiselectformpanel',
  requires : ['Ext.ux.form.MultiSelect'],

  constructor : function(config) {

    Ext.apply(this, {
      bodyPadding : 10,
      items : [{
        anchor : '100%',
        xtype : 'multiselect',
        fieldLabel : 'Multi Select',
        name : 'multiselect',
        store : Ext.create('Examples.store.DummyStore'),
        valueField : 'name',
        displayField : 'name',
        ddReorder : true,
        listeners : {
          change :...