State change listener about creditcardview

[vinaygaba]

@biddster I really like this idea! Can u give me certain scenarios where this should fire. Should it fire only when all the values are entered ? Or is there something else you are looking at?

[biddster]

I'm thinking of the edit scenario. If the user starts changing the expiry date to something invalid, I think I would want to know immediately so that I can disable an update button. What do you think?

[vinaygaba]

I'm thinking on the lines of how generic could these invalid conditions be. Or is it something that should be customizable by the users of this library. Putting some thought behind this.

[biddster]

I suspect that's something the library users would want to decide. Perhaps we just have a listener like this which fire on every edit?

interface CreditCardListener {
    void onCardNumberChanged();
    void onCardHolderChanged();
    void onExpiryDateChange();
    void onCvvChanged();
}

Would that suffice for most folks? I think it would for me.

[vinaygaba]

Yes that way we let the developer handle whatever checks/validation/etc they might want to do. This makes sense and could be very useful. Will try to complete this today!

[biddster]

I forgot to mention that I believe it's possible to directly reference the fields in the view. So one could actually add their own text changed listeners to the credit card view.

[vinaygaba]

Ah! Does it make this issue irrelevant? I mean is it even needed now?

[biddster]

Let me report back and I'll see how well it works. If it's workable, I'll close.

[vinaygaba]

Great! Thanks!

[biddster]

Seems to work fine, perfectly workable. Closing.

[vinaygaba]

Awesome!