Smart Input.  iOs in facetime has an input that has onBlurEmpty, onBlureChange , onFocus events.  It also manages the style of the state.  It has a bound clear input button that send the caret to the beginning, while showing the preset value . It also has a preset value that is in a different style.

With this widget you can make passive calls to the database for CRUD stuff.  

Look at the contact section in FaceTime.