How to observe touched event on Angular 2 NgForm?

Question

It is possible to subscribe a callback to an NgForm's valueChanges observable property in order to react to changes in the values of the controls of the form.

I need, in the same fashion, to react to the event of the user touching one of the form controls.

This class seem to define the valueChanges Observable and the touched property is defined as a boolean.

Is there a way to to react to the "control touched" event?

Answer 1

Anyone looking for this solution now there's way easier way that doesn't require any modifications to formControl itself. We can now subscribe to events on formControl like

    this.formControl.events.subscribe((event: ControlEvent<T>) => {
      // Do stuff
    });

From docs:

A multicasting observable that emits an event every time the state of the control changes. It emits for value, status, pristine or touched changes