title: How to access toolbar from a extjs splitbutton menu?
body: <p>I have a toolbar like this</p>
  
  <pre><code>  tbar: [{
              xtype        : 'textfield',
              name        : 'number',
              itemId        : 'number',
              listeners    : {
                  change    : function(t,n){
                          console.log(this.up('toolbar').down('#splitbut')) // i can access splitbutton from here
                  }
              }                                                          
          },{
              xtype    : 'splitbutton',
              text    : 'Report',
              disabled: true,
              itemId    : 'splitbut',
              menu    : [{
                      text    : 'details',
                      handler    : function() {
                          // how to access #number text field  from here
                      }
                  }
  </code></pre>
  
  <p>i tried like this.up('menu').up('toolbar') inside menu button handler but im getting undefined message for each way i try</p>
  
  <p>any idea how to access #number text field from menu button?</p>
  
  <p>Regards</p>