How to capture the HTMLEditor's onpaste event

The key to capturing the onpaste event for the HTMLEditor component is to wait for its initialize event to fire and then add the onpaste handler to its document body:

{
xtype: 'htmleditor',
listeners: {
  initialize: function(cmp) {

    Ext.EventManager.addListener(

      cmp.iframeEl.dom.contentWindow.document.body

      , 'paste'

      , function(e, elem){
          console.log(arguments);
      });

    }
  }
}