if ( Window.confirm( Constants.INSTANCE.RemoveThisEntireConditionQ() ) ) {
if ( model.removeLhsItem( idx ) ) {
refreshWidget();
//Signal possible change in Template variables
TemplateVariablesChangedEvent tvce = new TemplateVariablesChangedEvent( model );
eventBus.fireEventFromSource( tvce,
model );
} else {
ErrorPopup.showMessage( Constants.INSTANCE.CanTRemoveThatItemAsItIsUsedInTheActionPartOfTheRule() );
}