Ext.WickedFormPanel = Ext.extend(Ext.FormPanel, {
  initComponent: function() {
    Ext.WickedFormPanel.superclass.initComponent.apply(this, arguments);

    this.getForm().on('actioncomplete', function(form, action) {
      if (action.type == 'load') {
        var json = Ext.decode(action.response.responseText);
        var combos = this.findByType('combo');

        Ext.each(combos, function(combo) {
          if (json.data[combo.displayField] && !Ext.isEmpty(combo.getValue())) {
            combo.setRawValue(json.data[combo.displayField]);
          }
        });
      }
    }, this);
  }
})