focus

Overview ¶

Package focus demonstrates a screen with multiple components and tab/shift-tab focus cycling. Only the focused component receives keystrokes; the others sit dim with their inactive border color.

The pattern is: keep an int focus index, intercept tab/shift-tab in Update, call Blur on every component and Focus on the active one, and forward all other messages to the focused component only — otherwise typing in the input would also move list cursors.