feat:(angular/component): Configurable reversion value for requireSelection for MatAutocomplete #31141
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…ection for MatAutocomplete Adds a new input for `MatAutocomplete`: `revertValueTo`. This input works with `requireSelection` and allows the developer to provide a value that should be reverted to _instead_ of `null`. One use case for this feature is to have the autocomplete revert to the _last known_ value instead of `null` with something like: `[revertValueTo]="formControl.value"` This defaults to `null` in order to maintain backwards compatibility. The use-case that led to this change is a time zone picker. If the user does not select a time zone, it will revert to either the previously selected time zone or the browser's time zone. Video using the demo app: https://www.youtube.com/watch?v=cqZ2WzNDZbk
herrevilkitten
requested review from
crisbeto and
andrewseguin
and removed request for
a team
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Adds a new input for
MatAutocomplete:revertValueTo. This input works withrequireSelectionand allows the developer to provide a value that should be reverted to instead ofnull. One use case for this feature is to have the autocomplete revert to the last known value instead ofnullwith something like:[revertValueTo]="formControl.value"This defaults to
nullin order to maintain backwards compatibility.The use-case that led to this change is a time zone picker. If the user does not select a time zone, it will revert to either the previously selected time zone or the browser's time zone.
Video using the demo app: https://www.youtube.com/watch?v=cqZ2WzNDZbk