Is there an existing issue for this?

• I have searched the existing issues
• I have read the guide to filing a bug

Use case

There might be a (possibly different) action to be initiated when the user finishes the text entry and presses the Done button on the keyboard. In some use cases, interim suggestions are not required, a search anchor is not used but the existing Material look & feel of a standalone SearchBar would be welcome.

Proposal

Add an optional onSubmitted handler to allow the developer to decide which event to act upon.