matDatePicker could be more consistent between picking and typing dates

[UltraMarco]

Bug, feature request, or proposal:

feature request

What is the expected behavior?

When leaving after directly typing a valid date in matDatePicker input, the date could be reformatted to reflect the control's value as if it was picked from the calendar.
E.g.:
speed typing "4 1 87" could automatically become "4/1/1987" (according to locale) when leaving the input

What is the current behavior?

Typed dates don't change after typing and leaving the input.

What is the use-case or motivation for changing an existing behavior?

This would make inserting dates more consistent with the global appearance of the control and less error-prone for the end users

[WizardPC]

Actually i do it with moment.js

[UltraMarco]

It's the same behavior even with momentjs, once input date is parsed and the control value is set, what was written remains there, it doesn't get refreshed with the same formatted date.

[mmalerba]

Sounds reasonable to me. I do find it reassures me that the system actually accepted my input when I see it reformat itself

[UltraMarco]

Exactly Il lun 2 apr 2018, 18:34 mmalerba <notifications@github.com> ha scritto:

…

Sounds reasonable to me. I do find it reassures me that the system actually accepted my input when I see it reformat itself — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#10645 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AOO2o_x-dIvgfrrWqRQyI08_PIOvpG0pks5tklMwgaJpZM4TCest> .

[tomwanzek]

Related to the same consideration. i.e. typing vs picking, there is a degree of fickleness:

If I type a date of 2018-06-24, the picked date appears as 2018-06-25. Whereas if I type 06/24/2018, the picked date correctly appears as 2018-06-24.

Angular Material: 5.2.6
with MatNativeDateModule

[mmalerba]

@tomwanzek that's the behavior of the native Date.parse which NativeDateAdapter delegates to. I recommend using MomentDateAdapter or a custom DateAdapter instead

[tomwanzek]

@mmalerba Oh well, thanks for the hint!