The ItemSelector extension

ItemSelector is a specialized MultiSelect field that renders as a pair with the MultiSelect field; one with the available options and the other with the selected options. A set of buttons in between, allows the items to be moved between the fields and reordered within the selection. Also, they can be moved via drag-and–drop method.

Here, in the following code, a form panel class is defined, in which we are using the ItemSelector extension as an item of this form:

Ext.define('Examples.view.itemselector.ItemSelectorFormPanel', {
  extend : 'Ext.form.Panel',
  alias : 'widget.itemselectorformpanel',
  requires : ['Ext.ux.form.ItemSelector'],

  constructor : function(config) {

    Ext.apply(this, {
      bodyPadding : 10,
      items : [{
        anchor : '100%',
        xtype: 'itemselector',
        name: 'itemselector',
        store : Ext.create('Examples.store.DummyStore'),
        valueField : 'name',
        displayField : 'name',
        fromTitle: 'Available...