Validate inputs in modals after MODAL_SUBMIT

[giovcastillo]

Description

It would be a very good feature if the application could answer MODAL_SUBMIT events after validating the inputs internally without closing the modal.

Why?

As a modal receives information from an user, it's very common that the user gives wrong and/or unexpected information.
Since the modal only closes when the application responds to the submit event, an event like MODAL_FIELD_ERROR (or any) could be sent with:

• a descriptive error given by the application saying what's going wrong,
• the IDs of the fields that are having issues, highlighting that fields and not closing the modal.
• possibly a short descriptive error for each field that shows after the label, so every error is not wrapped at the top of the modal making it difficult to read.

This could greatly improve the User Experience with modals because the application doesn't have to close the modal just to edit or create a message with the error and a button to re-open the modal.

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PD: Sorry if my grammar is not good. My mother language is Spanish.