DateTimeComboPicker - Vaadin Add-on Directory
A combined date & time picker with a single field, a single popup, and a LocalDateTime value. The format pattern drives the UI: it defines the field text and which time parts (hours/minutes/seconds, AM/PM) appear in the popup.
DateTimeComboPicker is what DateTimePicker would be with one field instead of two:
a single input with a `LocalDateTime` value and a single popup containing a month
calendar and sliding time columns side by side.