# Showcase

A full tour of XWUIChatHeader: the four presence states and the subtitles they derive, `presenceText` and `subtitle` overrides, every combination of the `showSearch` / `showVoiceCall` / `showVideoCall` / `showMenu` toggles, and the mobile chevron that appears only when `onBackClick` is supplied. The last section wires all six callbacks to a readout and drives `setPresence` live from buttons.