╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭a80304d1..╮ a80304d1.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (323) user
╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯
.. embed/ event/ test/ ui/ command.zig event.zig lib.zig main.zig main_wasm.zig serve.zig serve_common.zig serve_http.zig serve_ssh.zig serve_ssh_protocol.zig test.zig testnet.zig try.zig ╭─────────────────────────────────╮ │ui.zig │ ╰─────────────────────────────────╯ web.zig
1 const std = @import("std"); 2 const xit = @import("xit"); 3 const rp = xit.repo; 4 const rf = xit.ref; 5 const hash = xit.hash; 6 const xitui = xit.xitui; 7 const term = xitui.terminal; 8 const wgt = xitui.widget; 9 const layout = xitui.layout; 10 const Key = xitui.input.Key; 11 const Grid = xitui.grid.Grid; 12 const Focus = xitui.focus.Focus; 13 const evt = @import("./event.zig"); 14 15 pub const Home = @import("./ui/Home.zig"); 16 pub const User = @import("./ui/User.zig"); 17 pub const Repo = @import("./ui/Repo.zig"); 18 pub const Title = @import("./ui/Title.zig"); 19 pub const SubTitle = @import("./ui/SubTitle.zig"); 20 pub const Quit = @import("./ui/Quit.zig"); 21 22 pub const PageKind = enum { 23 home, 24 user, 25 repo, 26 }; 27 28 pub const Page = union(PageKind) { 29 home: Home, 30 user: User, 31 repo: Repo, 32 33 pub fn init(arena: *std.heap.ArenaAllocator, session: *Session, route: RoutablePage) !Page { 34 // the repo page can build without a moment in local mode; the home and 35 // user pages always read from the admin db. 36 return switch (route.parent()) { 37 .home => .{ .home = try Home.init(arena, session.haxy_moment orelse return error.NoMoment, switch (route) { 38 .home_users => |start| start, 39 else => 0, 40 }, switch (route) { 41 .home_repos => |start| start, 42 else => 0, 43 }) }, 44 .user => blk: { 45 const haxy_moment = session.haxy_moment orelse return error.NoMoment; 46 break :blk switch (route) { 47 .user_repos => |u| .{ .user = try User.init(arena, haxy_moment, u.name, u.start) }, 48 .user_settings, .user_auth => |name| .{ .user = try User.init(arena, haxy_moment, name, 0) }, 49 else => return error.UnexpectedRoute, 50 }; 51 }, 52 .repo => switch (route) { 53 .repo_files, .repo_commits, .repo_refs, .repo_issues, .repo_settings, .repo_auth => .{ .repo = try Repo.init(arena, session, route) }, 54 else => return error.UnexpectedRoute, 55 }, 56 }; 57 } 58 }; 59 60 // what the server hands to the client (and what main_wasm parses on _start). 61 // keeps Page free of any per-request session state. 62 pub const Snapshot = struct { 63 page: Page, 64 session: Session.Data = .{}, 65 }; 66 67 // a top-level "page" the user can navigate to. the user_* variants are the 68 // tabs of a user page; they each carry the user's name and all map to the 69 // .user parent page, so switching between them stays on that page (and just 70 // updates the url) rather than navigating away. 71 pub const RoutablePage = union(enum) { 72 home_users: usize, // 0 = first page 73 home_repos: usize, // 0 = first page 74 home_settings, 75 home_auth, 76 user_repos: struct { name: Array(evt.User.name_max_len), start: usize = 0 }, 77 user_settings: Array(evt.User.name_max_len), 78 user_auth: Array(evt.User.name_max_len), 79 repo_files: RepoFilesRoute, 80 repo_commits: RepoCommitsRoute, 81 repo_refs: struct { 82 name: Array(repo_route_max_len), 83 kind: RefKind = .branch, 84 // the url-encoded ref name `kind`'s column windows from ("" = the 85 // first window; the other column always shows its first window). 86 from: Array(ref_route_max_len) = .{}, 87 }, 88 repo_issues: struct { 89 name: Array(repo_route_max_len), 90 // the tag the list is filtered to, url-encoded ("" = unfiltered). 91 tag: Array(issue_tag_route_max_len) = .{}, 92 selected: Array(evt.event_id_size * 2) = .{}, 93 // the view the url names; a route with `selected` derives its view 94 // from that issue's status instead. 95 view: IssuesView = .open, 96 }, 97 repo_settings: Array(repo_route_max_len), 98 repo_auth: Array(repo_route_max_len), 99 100 pub const default: RoutablePage = .{ .home_users = 0 }; 101 102 pub const RefKind = enum { branch, tag }; 103 104 pub const IssuesView = enum { open, closed, tags, new, edit, description }; 105 106 pub const RefOrOid = enum { 107 branch, 108 tag, 109 object, 110 }; 111 112 // the "key:value" segments of a url tail, collected in any order 113 const Params = struct { 114 const ParamKey = enum { start, line, branch, tag, object }; 115 116 // a branch:/tag:/object: param; the value stays url-encoded 117 const RefParam = struct { kind: RefOrOid, value: []const u8 }; 118 119 values: std.enums.EnumArray(ParamKey, ?[]const u8) = .initFill(null), 120 121 // consume the leading "key:value" segments, stopping at the first 122 // segment that isn't one 123 fn scanPairs(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!void { 124 while (segments.peek()) |seg| { 125 const colon = std.mem.indexOfScalar(u8, seg, ':') orelse return; 126 const key = std.meta.stringToEnum(ParamKey, seg[0..colon]) orelse return; 127 const value = seg[colon + 1 ..]; 128 if (value.len == 0) return error.BadUrl; 129 if (self.values.get(key) != null) return error.BadUrl; 130 self.values.set(key, value); 131 _ = segments.next(); 132 } 133 } 134 135 // consume every remaining segment: pairs plus at most one bare word, 136 // which is returned 137 fn scanTail(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!?[]const u8 { 138 var word: ?[]const u8 = null; 139 while (true) { 140 try self.scanPairs(segments); 141 const seg = segments.next() orelse return word; 142 if (seg.len == 0 or word != null) return error.BadUrl; 143 word = seg; 144 } 145 } 146 147 // true when every set param is one of `allowed` 148 fn only(self: Params, allowed: []const ParamKey) bool { 149 for (std.enums.values(ParamKey)) |key| { 150 if (self.values.get(key) == null) continue; 151 if (std.mem.indexOfScalar(ParamKey, allowed, key) == null) return false; 152 } 153 return true; 154 } 155 156 // the "start:<n>" window param (0 when absent), null when malformed 157 fn start(self: Params) ?usize { 158 const value = self.values.get(.start) orelse return 0; 159 return std.fmt.parseInt(usize, value, 10) catch null; 160 } 161 162 // the "line:<n>" first-line param (0 when absent), null when malformed 163 fn line(self: Params) ?usize { 164 const value = self.values.get(.line) orelse return 0; 165 return std.fmt.parseInt(usize, value, 10) catch null; 166 } 167 168 // the single branch:/tag:/object: param, null when none is set 169 fn ref(self: Params) error{BadUrl}!?RefParam { 170 var result: ?RefParam = null; 171 inline for (@typeInfo(RefOrOid).@"enum".fields) |field| { 172 if (self.values.get(@field(ParamKey, field.name))) |value| { 173 if (result != null) return error.BadUrl; 174 result = .{ .kind = @field(RefOrOid, field.name), .value = value }; 175 } 176 } 177 return result; 178 } 179 }; 180 181 const user_segment = "/user/"; 182 const repo_segment = "/repo/"; 183 const files_seg = "files"; 184 const commits_seg = "commits"; 185 // ends a commits route naming its commit's full message 186 const message_seg = "message"; 187 // the `Params` key spellings the url emitters use 188 const tag_filter_seg = @tagName(Params.ParamKey.tag) ++ ":"; 189 const start_seg = @tagName(Params.ParamKey.start) ++ ":"; 190 const line_seg = @tagName(Params.ParamKey.line) ++ ":"; 191 // marks a files or commits route's trailing path: the value is the raw 192 // remainder of the url, so it must come last 193 const path_seg = "path:"; 194 195 // a repo route is "username/reponame", optionally followed by the files 196 // tab's "/files/<refkind>:<refvalue>[/line:<n>][/path:<dir>]"; the bare 197 // pair means the default branch's files root. a local session's routes 198 // elide the identity: "" at the bare root, else starting at the tail's "/". 199 pub const repo_route_max_len = 1024; 200 pub const repo_identity_max_len = evt.User.name_max_len + 1 + evt.Repo.name_max_len; 201 202 // true when a repo route's stored string elides its identity (local mode). 203 // unambiguous because a full string always starts with its owner segment. 204 fn identityElided(s: []const u8) bool { 205 return s.len == 0 or s[0] == '/'; 206 } 207 208 // a url-encoded tag can grow to three bytes per source byte. 209 pub const issue_tag_route_max_len = evt.Issue.tag_max_len * 3; 210 211 // caps a url-encoded ref name in a route (a longer name doesn't route). 212 pub const ref_route_max_len = 512; 213 214 // the identity stored by every repo route. Local routes elide it. 215 pub const RepoIdentity = struct { 216 identity: []const u8, // "owner/name" 217 owner: []const u8, 218 name: []const u8, 219 220 pub fn parse(s: []const u8) ?RepoIdentity { 221 var result: RepoIdentity = .{ 222 .identity = "", 223 .owner = "", 224 .name = "", 225 }; 226 if (identityElided(s)) { 227 return result; 228 } else { 229 var id_segments = std.mem.splitScalar(u8, s, '/'); 230 const owner = id_segments.next() orelse return null; 231 const name = id_segments.next() orelse return null; 232 if (owner.len == 0 or name.len == 0) return null; 233 result.identity = s[0 .. owner.len + 1 + name.len]; 234 result.owner = owner; 235 result.name = name; 236 } 237 return result; 238 } 239 }; 240 241 pub const RepoFilesRoute = struct { 242 name: Array(repo_identity_max_len), 243 ref_kind: ?RefOrOid = null, 244 ref_value: Array(ref_route_max_len) = .{}, 245 path: Array(repo_route_max_len) = .{}, 246 // the selected file's first visible line (1-based; 0 = unset). 247 line: usize = 0, 248 }; 249 250 pub const RepoCommitsRoute = struct { 251 name: Array(repo_identity_max_len), 252 ref_or_oid: ?RefOrOid = null, 253 value: Array(ref_route_max_len) = .{}, 254 // what the pane shows for the commit the log walks from. 255 content: Content = .{ .diff = .{} }, 256 257 // a diff window and the message are alternatives, so the window's 258 // params can't be named alongside the message. 259 pub const Content = union(enum) { 260 diff: struct { 261 // the hunk index the window starts at. 262 start: usize = 0, 263 // the file the diff is filtered to ("" = every file). 264 path: Array(repo_route_max_len) = .{}, 265 }, 266 message, 267 }; 268 }; 269 270 // build a `.repo_files` route (a null ref_kind = the bare default-branch 271 // root). null if the result doesn't fit the inline name. 272 pub fn repoFilesRoute(identity: []const u8, ref_kind: ?RefOrOid, ref_value: []const u8, dir: []const u8, line: usize) ?RoutablePage { 273 if (ref_kind == null and (ref_value.len != 0 or dir.len != 0)) return null; 274 if (ref_kind != null and ref_value.len == 0 and dir.len != 0) return null; 275 return .{ .repo_files = .{ 276 .name = Array(repo_identity_max_len).from(identity) orelse return null, 277 .ref_kind = ref_kind, 278 .ref_value = Array(ref_route_max_len).from(ref_value) orelse return null, 279 .path = Array(repo_route_max_len).from(dir) orelse return null, 280 .line = line, 281 } }; 282 } 283 284 // build a `.repo_commits` route (a null ref_or_oid = the default branch). 285 // always carries the `commits` marker so the bare route doesn't collide 286 // with the files root. a non-empty `path` filters the diff pane to that 287 // file and requires a ref. 288 pub fn repoCommitsRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, start: usize, path: []const u8) ?RoutablePage { 289 if (ref_or_oid == null and (value.len != 0 or path.len != 0)) return null; 290 return .{ .repo_commits = .{ 291 .name = Array(repo_identity_max_len).from(identity) orelse return null, 292 .ref_or_oid = ref_or_oid, 293 .value = Array(ref_route_max_len).from(value) orelse return null, 294 .content = .{ .diff = .{ 295 .start = start, 296 .path = Array(repo_route_max_len).from(path) orelse return null, 297 } }, 298 } }; 299 } 300 301 // build a `.repo_commits` route showing the ref/oid's commit message in 302 // full, which is the only content that page renders. 303 pub fn repoCommitMessageRoute(identity: []const u8, ref_or_oid: RefOrOid, value: []const u8) ?RoutablePage { 304 if (value.len == 0) return null; 305 return .{ .repo_commits = .{ 306 .name = Array(repo_identity_max_len).from(identity) orelse return null, 307 .ref_or_oid = ref_or_oid, 308 .value = Array(ref_route_max_len).from(value) orelse return null, 309 .content = .message, 310 } }; 311 } 312 313 // build a `.repo_refs` route windowing `kind`'s column from the 314 // url-encoded ref name `from` ("" = the first window). 315 pub fn repoRefsRoute(identity: []const u8, kind: RefKind, from: []const u8) ?RoutablePage { 316 return .{ .repo_refs = .{ 317 .name = Array(repo_route_max_len).from(identity) orelse return null, 318 .kind = kind, 319 .from = Array(ref_route_max_len).from(from) orelse return null, 320 } }; 321 } 322 323 // build a `.repo_issues` route for "owner/name" (identity) showing 324 // `status`'s list, filtered to the url-encoded `tag` ("" = unfiltered) and 325 // rooted at the issue with hex event id `selected` ("" = the first window). 326 pub fn repoIssuesRoute(identity: []const u8, status: evt.Issue.Status, tag: []const u8, selected: []const u8) ?RoutablePage { 327 return .{ .repo_issues = .{ 328 .name = Array(repo_route_max_len).from(identity) orelse return null, 329 .tag = Array(issue_tag_route_max_len).from(tag) orelse return null, 330 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 331 .view = switch (status) { 332 .open => .open, 333 .closed => .closed, 334 }, 335 } }; 336 } 337 338 // build a `.repo_issues` route showing tags view, keeping the url-encoded 339 // `tag` filter ("" = unfiltered). 340 pub fn repoIssuesTagsRoute(identity: []const u8, tag: []const u8) ?RoutablePage { 341 return .{ .repo_issues = .{ 342 .name = Array(repo_route_max_len).from(identity) orelse return null, 343 .tag = Array(issue_tag_route_max_len).from(tag) orelse return null, 344 .view = .tags, 345 } }; 346 } 347 348 // build a `.repo_issues` route showing new-issue form. 349 pub fn repoIssuesNewRoute(identity: []const u8) ?RoutablePage { 350 return .{ .repo_issues = .{ 351 .name = Array(repo_route_max_len).from(identity) orelse return null, 352 .view = .new, 353 } }; 354 } 355 356 // build a `.repo_issues` route showing the edit form for the issue with 357 // hex event id `selected`. 358 pub fn repoIssuesEditRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 359 if (selected.len == 0) return null; 360 return .{ .repo_issues = .{ 361 .name = Array(repo_route_max_len).from(identity) orelse return null, 362 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 363 .view = .edit, 364 } }; 365 } 366 367 // build a `.repo_issues` route showing the whole description of the issue 368 // with hex event id `selected`. 369 pub fn repoIssuesDescriptionRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 370 if (selected.len == 0) return null; 371 return .{ .repo_issues = .{ 372 .name = Array(repo_route_max_len).from(identity) orelse return null, 373 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 374 .view = .description, 375 } }; 376 } 377 378 // an inline, owned array of data. keeping it in the route (rather than a 379 // borrowed slice) makes RoutablePage a plain value: it can be copied, stored 380 // in history, and serialized without any arena tracking. 381 pub fn Array(comptime max_len: usize) type { 382 return struct { 383 bytes: [max_len]u8 = undefined, 384 len: u16 = 0, 385 386 pub fn from(s: []const u8) ?Array(max_len) { 387 if (s.len > max_len) return null; 388 var name = Array(max_len){ .len = @intCast(s.len) }; 389 @memcpy(name.bytes[0..s.len], s); 390 return name; 391 } 392 393 pub fn slice(self: *const Array(max_len)) []const u8 { 394 return self.bytes[0..self.len]; 395 } 396 397 // round-trip as a json string instead of an array of numbers. 398 pub fn jsonStringify(self: *const Array(max_len), jw: anytype) !void { 399 try jw.write(self.slice()); 400 } 401 402 pub fn jsonParse(allocator: std.mem.Allocator, source: anytype, options: std.json.ParseOptions) !Array(max_len) { 403 const s = try std.json.innerParse([]const u8, allocator, source, options); 404 // ValueTooLong is std.json's error for an over-long field. 405 return from(s) orelse error.ValueTooLong; 406 } 407 }; 408 } 409 410 pub fn toUrl(self: RoutablePage, arena: *std.heap.ArenaAllocator) ![]const u8 { 411 return switch (self) { 412 .home_users => |start| if (start == 0) @as([]const u8, "/users") else try std.fmt.allocPrint(arena.allocator(), "/users/" ++ start_seg ++ "{d}", .{start}), 413 .home_repos => |start| if (start == 0) @as([]const u8, "/repos") else try std.fmt.allocPrint(arena.allocator(), "/repos/" ++ start_seg ++ "{d}", .{start}), 414 .home_settings => "/settings", 415 .home_auth => "/auth", 416 .user_repos => |u| if (u.start == 0) 417 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/repos", .{u.name.slice()}) 418 else 419 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/repos/" ++ start_seg ++ "{d}", .{ u.name.slice(), u.start }), 420 .user_settings => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/settings", .{name.slice()}), 421 .user_auth => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/auth", .{name.slice()}), 422 .repo_files => |f| blk: { 423 const prefix = try repoUrlPrefix(arena, f.name.slice()); 424 if (f.ref_kind == null and f.line == 0) break :blk if (prefix.len == 0) "/" else prefix; 425 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 426 try out.writer.print("{s}/" ++ files_seg, .{prefix}); 427 if (f.ref_kind) |kind| if (f.ref_value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), f.ref_value.slice() }); 428 if (f.line != 0) try out.writer.print("/" ++ line_seg ++ "{d}", .{f.line}); 429 if (f.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{f.path.slice()}); 430 break :blk out.written(); 431 }, 432 .repo_commits => |c| blk: { 433 const prefix = try repoUrlPrefix(arena, c.name.slice()); 434 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 435 try out.writer.print("{s}/" ++ commits_seg, .{prefix}); 436 if (c.ref_or_oid) |kind| if (c.value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), c.value.slice() }); 437 switch (c.content) { 438 .diff => |d| { 439 if (d.start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{d.start}); 440 if (d.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{d.path.slice()}); 441 }, 442 .message => try out.writer.print("/" ++ message_seg, .{}), 443 } 444 break :blk out.written(); 445 }, 446 .repo_refs => |r| blk: { 447 const prefix = try repoUrlPrefix(arena, r.name.slice()); 448 break :blk if (r.from.len == 0) 449 try std.fmt.allocPrint(arena.allocator(), "{s}/refs", .{prefix}) 450 else 451 try std.fmt.allocPrint(arena.allocator(), "{s}/refs/{s}:{s}", .{ prefix, @tagName(r.kind), r.from.slice() }); 452 }, 453 .repo_issues => |i| blk: { 454 const prefix = try repoUrlPrefix(arena, i.name.slice()); 455 if (i.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/issues/{s}/edit", .{ prefix, i.selected.slice() }); 456 if (i.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/issues/{s}/description", .{ prefix, i.selected.slice() }); 457 // a selected issue's url carries its id instead of a view 458 // name, so it survives status changes 459 const word = if (i.selected.len != 0) i.selected.slice() else @tagName(i.view); 460 break :blk if (i.tag.len == 0) 461 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/{s}", .{ prefix, word }) 462 else 463 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/{s}/" ++ tag_filter_seg ++ "{s}", .{ prefix, word, i.tag.slice() }); 464 }, 465 .repo_settings => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/settings", .{try repoUrlPrefix(arena, name.slice())}), 466 .repo_auth => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/auth", .{try repoUrlPrefix(arena, name.slice())}), 467 }; 468 } 469 470 pub fn fromUrl(path: []const u8) ?RoutablePage { 471 if (std.mem.eql(u8, path, "/")) return default; 472 if (path.len < 2 or path[0] != '/') return null; 473 var segments = std.mem.splitScalar(u8, path[1..], '/'); 474 const first = segments.next() orelse return null; 475 if (std.mem.eql(u8, first, "users")) return .{ .home_users = listStart(&segments) orelse return null }; 476 if (std.mem.eql(u8, first, "repos")) return .{ .home_repos = listStart(&segments) orelse return null }; 477 if (std.mem.eql(u8, first, "settings")) return if (segments.next() == null) .home_settings else null; 478 if (std.mem.eql(u8, first, "auth")) return if (segments.next() == null) .home_auth else null; 479 // "user/<name>[/repos[/start:<n>]|/settings|/auth]" 480 if (std.mem.eql(u8, first, "user")) { 481 const name = segments.next() orelse return null; 482 if (name.len == 0) return null; 483 const parsed = Array(evt.User.name_max_len).from(name) orelse return null; // name too long 484 const sub = segments.next() orelse return .{ .user_repos = .{ .name = parsed } }; 485 if (std.mem.eql(u8, sub, "repos")) return .{ .user_repos = .{ .name = parsed, .start = listStart(&segments) orelse return null } }; 486 if (std.mem.eql(u8, sub, "settings")) return if (segments.next() == null) .{ .user_settings = parsed } else null; 487 if (std.mem.eql(u8, sub, "auth")) return if (segments.next() == null) .{ .user_auth = parsed } else null; 488 return null; // unknown sub-path 489 } 490 // "repo/<username>/<reponame>[/<tab tail>]"; the bare pair is the 491 // files root 492 if (std.mem.eql(u8, first, "repo")) { 493 const rest = segments.rest(); // "username/reponame[/...]" 494 const owner = segments.next() orelse return null; 495 const repo_name = segments.next() orelse return null; 496 // reject an empty username or reponame 497 if (owner.len == 0 or repo_name.len == 0) return null; 498 const pair = rest[0 .. owner.len + 1 + repo_name.len]; // "username/reponame" 499 if (segments.peek() != null) { 500 return repoSubRoute(pair, segments.rest()); 501 } 502 return repoFilesRoute(pair, null, "", "", 0); 503 } 504 return null; 505 } 506 507 // parse a local-mode url, which elides the "/repo/<owner>/<name>" prefix: 508 // "/" is the files root and the sub-paths follow directly. 509 pub fn fromUrlLocal(path: []const u8) ?RoutablePage { 510 if (std.mem.eql(u8, path, "/")) return repoFilesRoute("", null, "", "", 0); 511 if (path.len < 2 or path[0] != '/') return null; 512 return repoSubRoute("", path[1..]); 513 } 514 515 // the url prefix for a repo route's identity: "/repo/<identity>", or "" 516 // when the identity is elided. 517 fn repoUrlPrefix(arena: *std.heap.ArenaAllocator, identity: []const u8) ![]const u8 { 518 if (identity.len == 0) return ""; 519 return std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}", .{identity}); 520 } 521 522 pub fn parent(self: RoutablePage) PageKind { 523 return switch (self) { 524 .home_users, .home_repos, .home_settings, .home_auth => .home, 525 .user_repos, .user_settings, .user_auth => .user, 526 .repo_files, .repo_commits, .repo_refs, .repo_issues, .repo_settings, .repo_auth => .repo, 527 }; 528 } 529 530 // the dir a trailing "path:<dir>" names: the raw remainder ("" when 531 // absent, null when malformed) 532 fn pathValue(rest: []const u8) ?[]const u8 { 533 if (rest.len == 0) return ""; 534 if (!std.mem.startsWith(u8, rest, path_seg)) return null; 535 const dir = rest[path_seg.len..]; 536 return if (dir.len == 0) null else dir; 537 } 538 539 // a list route's tail: at most a "start:<n>" param, null on anything else 540 fn listStart(segments: *std.mem.SplitIterator(u8, .scalar)) ?usize { 541 var params = Params{}; 542 const word = params.scanTail(segments) catch return null; 543 if (word != null or !params.only(&.{.start})) return null; 544 return params.start(); 545 } 546 547 // parse the sub-path after a repo route's identity ("" for a local 548 // route): a tab keyword followed by "key:value" params in any order, plus 549 // the files tab's trailing "path:<dir>". 550 fn repoSubRoute(pair: []const u8, sub: []const u8) ?RoutablePage { 551 var segments = std.mem.splitScalar(u8, sub, '/'); 552 const tab = segments.next() orelse return null; 553 var params = Params{}; 554 if (std.mem.eql(u8, tab, "settings")) return if (segments.next() == null) .{ .repo_settings = Array(repo_route_max_len).from(pair) orelse return null } else null; 555 if (std.mem.eql(u8, tab, "auth")) return if (segments.next() == null) .{ .repo_auth = Array(repo_route_max_len).from(pair) orelse return null } else null; 556 if (std.mem.eql(u8, tab, "refs")) { 557 const word = params.scanTail(&segments) catch return null; 558 if (word != null or !params.only(&.{ .branch, .tag })) return null; 559 const ref = (params.ref() catch return null) orelse return repoRefsRoute(pair, .branch, ""); 560 const kind = std.meta.stringToEnum(RefKind, @tagName(ref.kind)) orelse return null; 561 return repoRefsRoute(pair, kind, ref.value); 562 } 563 if (std.mem.eql(u8, tab, "issues")) { 564 // "<id>/edit" is the edit form for that issue, with no params; 565 // "<id>/description" is its whole-description page. 566 const after_tab = segments.rest(); 567 if (std.mem.endsWith(u8, after_tab, "/edit")) { 568 const id = after_tab[0 .. after_tab.len - "/edit".len]; 569 if (id.len == 0 or std.mem.indexOfScalar(u8, id, '/') != null) return null; 570 return repoIssuesEditRoute(pair, id); 571 } 572 if (std.mem.endsWith(u8, after_tab, "/description")) { 573 const id = after_tab[0 .. after_tab.len - "/description".len]; 574 if (id.len == 0 or std.mem.indexOfScalar(u8, id, '/') != null) return null; 575 return repoIssuesDescriptionRoute(pair, id); 576 } 577 // the word is a view name or an issue event id (whose status 578 // picks the view); a filter with neither is never emitted. 579 const word = params.scanTail(&segments) catch return null; 580 if (!params.only(&.{.tag})) return null; 581 const tag_value = params.values.get(.tag) orelse ""; 582 const w = word orelse return if (tag_value.len == 0) repoIssuesRoute(pair, .open, "", "") else null; 583 if (std.meta.stringToEnum(evt.Issue.Status, w)) |status| return repoIssuesRoute(pair, status, tag_value, ""); 584 if (std.mem.eql(u8, w, "tags")) return repoIssuesTagsRoute(pair, tag_value); 585 if (std.mem.eql(u8, w, "new")) return if (tag_value.len == 0) repoIssuesNewRoute(pair) else null; 586 return repoIssuesRoute(pair, .open, tag_value, w); 587 } 588 if (std.mem.eql(u8, tab, files_seg)) { 589 params.scanPairs(&segments) catch return null; 590 if (!params.only(&.{ .line, .branch, .tag, .object })) return null; 591 const line = params.line() orelse return null; 592 const dir = pathValue(segments.rest()) orelse return null; 593 const ref = (params.ref() catch return null) orelse 594 return if (dir.len == 0) repoFilesRoute(pair, null, "", "", line) else null; 595 return repoFilesRoute(pair, ref.kind, ref.value, dir, line); 596 } 597 if (std.mem.eql(u8, tab, commits_seg)) { 598 params.scanPairs(&segments) catch return null; 599 if (!params.only(&.{ .start, .branch, .tag, .object })) return null; 600 const start = params.start() orelse return null; 601 const ref = (params.ref() catch return null) orelse { 602 const file = pathValue(segments.rest()) orelse return null; 603 return if (file.len == 0) repoCommitsRoute(pair, null, "", start, "") else null; 604 }; 605 // the message page names its commit and nothing else 606 if (std.mem.eql(u8, segments.rest(), message_seg)) 607 return if (start == 0) repoCommitMessageRoute(pair, ref.kind, ref.value) else null; 608 const file = pathValue(segments.rest()) orelse return null; 609 return repoCommitsRoute(pair, ref.kind, ref.value, start, file); 610 } 611 return null; // unknown sub-path 612 } 613 614 pub fn eql(a: RoutablePage, b: RoutablePage) bool { 615 if (std.meta.activeTag(a) != std.meta.activeTag(b)) return false; 616 return switch (a) { 617 .home_users => |a_start| a_start == b.home_users, 618 .home_repos => |a_start| a_start == b.home_repos, 619 .user_repos => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_repos.name.slice()) and a_u.start == b.user_repos.start, 620 .user_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.user_settings.slice()), 621 .user_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.user_auth.slice()), 622 .repo_files => |a_f| std.mem.eql(u8, a_f.name.slice(), b.repo_files.name.slice()) and 623 a_f.ref_kind == b.repo_files.ref_kind and 624 std.mem.eql(u8, a_f.ref_value.slice(), b.repo_files.ref_value.slice()) and 625 std.mem.eql(u8, a_f.path.slice(), b.repo_files.path.slice()) and 626 a_f.line == b.repo_files.line, 627 .repo_commits => |a_c| std.mem.eql(u8, a_c.name.slice(), b.repo_commits.name.slice()) and 628 a_c.ref_or_oid == b.repo_commits.ref_or_oid and 629 std.mem.eql(u8, a_c.value.slice(), b.repo_commits.value.slice()) and 630 switch (a_c.content) { 631 .diff => |a_d| switch (b.repo_commits.content) { 632 .diff => |b_d| a_d.start == b_d.start and std.mem.eql(u8, a_d.path.slice(), b_d.path.slice()), 633 .message => false, 634 }, 635 .message => std.meta.activeTag(b.repo_commits.content) == .message, 636 }, 637 .repo_refs => |a_r| std.mem.eql(u8, a_r.name.slice(), b.repo_refs.name.slice()) and a_r.kind == b.repo_refs.kind and std.mem.eql(u8, a_r.from.slice(), b.repo_refs.from.slice()), 638 .repo_issues => |a_i| std.mem.eql(u8, a_i.name.slice(), b.repo_issues.name.slice()) and 639 std.mem.eql(u8, a_i.tag.slice(), b.repo_issues.tag.slice()) and 640 std.mem.eql(u8, a_i.selected.slice(), b.repo_issues.selected.slice()) and 641 a_i.view == b.repo_issues.view, 642 .repo_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_settings.slice()), 643 .repo_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_auth.slice()), 644 else => true, 645 }; 646 } 647 648 // true when following a link from `b` to `a` (both repo routes) should reload 649 // rather than stay in page 650 pub fn repoPageChanged(a: RoutablePage, b: RoutablePage) bool { 651 if (a.parent() != .repo or b.parent() != .repo) return false; 652 if (std.meta.activeTag(a) == .repo_refs and std.meta.activeTag(b) == .repo_refs and 653 a.repo_refs.from.len == 0 and b.repo_refs.from.len == 0) 654 return !std.mem.eql(u8, a.repo_refs.name.slice(), b.repo_refs.name.slice()); 655 return !a.eql(b); 656 } 657 658 // true when `a` and `b` are the same user paginated to a different repos 659 // window. switching between a user's tabs is in-page (header-handled), so 660 // only a changed `start` on the repos list navigates. 661 pub fn userPageChanged(a: RoutablePage, b: RoutablePage) bool { 662 return switch (a) { 663 .user_repos => |aa| switch (b) { 664 .user_repos => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.start != bb.start, 665 else => false, 666 }, 667 else => false, 668 }; 669 } 670 671 // true when `a` and `b` are the same home list tab paginated to a different 672 // window. switching between the users/repos tabs is in-page (the home page 673 // holds both lists), so only a changed `after` on the same tab navigates. 674 pub fn homePageChanged(a: RoutablePage, b: RoutablePage) bool { 675 return switch (a) { 676 .home_users => |aa| switch (b) { 677 .home_users => |bb| aa != bb, 678 else => false, 679 }, 680 .home_repos => |aa| switch (b) { 681 .home_repos => |bb| aa != bb, 682 else => false, 683 }, 684 else => false, 685 }; 686 } 687 }; 688 689 // a `RefOrOid` resolved against an on-disk repo to the commit oid it points at 690 fn isUnreserved(c: u8) bool { 691 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 692 } 693 694 // percent-encode a ref name for use as a single url path segment. 695 pub fn urlEncodeRef(aa: std.mem.Allocator, raw: []const u8) ![]const u8 { 696 var out: std.Io.Writer.Allocating = .init(aa); 697 try std.Uri.Component.percentEncode(&out.writer, raw, isUnreserved); 698 return out.written(); 699 } 700 701 // a resolved ref/oid for a repo opened with `repo_kind`/`repo_opts` 702 pub fn ResolvedRefOrOid(comptime repo_kind: rp.RepoKind, comptime repo_opts: rp.RepoOpts(repo_kind)) type { 703 return struct { 704 pub const hex_len = hash.hexLen(repo_opts.hash); 705 706 // the concrete ref/oid (a null request resolves to the default branch) 707 ref_or_oid: RoutablePage.RefOrOid, 708 // its branch/tag name or oid, url-encoded (ref names may contain '/', so 709 // the route layer — which splits on '/' — stores them encoded). duped 710 // into `aa`. 711 value: []const u8, 712 // the commit oid it points at 713 oid: [hex_len]u8, 714 715 const Self = @This(); 716 717 // resolve a requested ref/oid (null = the repo's default branch) to a 718 // concrete ref/oid plus the commit oid it points at. `requested_value` is 719 // the url-encoded form (as it appears in the route). null when it doesn't 720 // resolve (an unknown branch/tag, or a malformed/unknown oid). 721 pub fn init( 722 repo: *rp.Repo(repo_kind, repo_opts), 723 io: std.Io, 724 aa: std.mem.Allocator, 725 requested_ref_or_oid: ?RoutablePage.RefOrOid, 726 requested_value: []const u8, 727 ) !?Self { 728 var ref_or_oid: RoutablePage.RefOrOid = requested_ref_or_oid orelse .branch; 729 // the decoded ref name / oid to look up. a named ref arrives url-encoded. 730 var value: []const u8 = if (requested_ref_or_oid == null) 731 requested_value 732 else 733 std.Uri.percentDecodeInPlace(try aa.dupe(u8, requested_value)); 734 // no ref named: fall back to HEAD's branch (or its oid when detached). 735 if (requested_ref_or_oid == null) { 736 var head_buf: [rf.MAX_REF_CONTENT_SIZE]u8 = undefined; 737 if (repo.head(io, &head_buf)) |head| switch (head) { 738 .ref => |r| { 739 ref_or_oid = .branch; 740 value = r.name; 741 }, 742 .oid => |o| { 743 ref_or_oid = .object; 744 value = o; 745 }, 746 } else |_| {} 747 } 748 749 var oid: [hex_len]u8 = undefined; 750 switch (ref_or_oid) { 751 .object => { 752 if (value.len != hex_len) return null; 753 @memcpy(&oid, value); 754 }, 755 .branch, .tag => { 756 const ref_kind: rf.RefKind = if (ref_or_oid == .branch) .head else .tag; 757 oid = (repo.readRef(io, .{ .kind = ref_kind, .name = value }) catch null) orelse return null; 758 }, 759 } 760 // store url-encoded so the route layer can hold the value verbatim. 761 return .{ .ref_or_oid = ref_or_oid, .value = try urlEncodeRef(aa, value), .oid = oid }; 762 } 763 }; 764 } 765 766 // where a repo page reads its on-disk repo from 767 pub const RepoSource = struct { 768 path: []const u8, 769 repo_kind: rp.RepoKind, 770 }; 771 772 // per-connection mutable state. each SSH session / web session / local TUI 773 // run gets its own. 774 pub const Session = struct { 775 data: Data = .{}, 776 // session-lifetime allocations: login/user_id, persisted prefs, queued 777 // actions. lives as long as the connection. 778 arena: *std.heap.ArenaAllocator, 779 // current page's allocations: page data and the page-scoped strings widgets 780 // build (form actions, links). owned by Nav, swapped on each navigation, so 781 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 782 // where a render is one-shot, this points at the same arena as `arena`. 783 page_arena: *std.heap.ArenaAllocator, 784 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 785 // filesystem io and the path to <server>/repos, for opening on-disk repos 786 // during page construction. both null on wasm, which has no filesystem and 787 // rebuilds pages from the serialized snapshot rather than from disk. 788 io: ?std.Io = null, 789 repos_dir: ?[]const u8 = null, 790 // the single on-disk repo this session views, when running in local mode 791 // (haxy invoked with no arguments inside a repo). null on the server paths, 792 // which resolve repos from the admin db instead. 793 local: ?RepoSource = null, 794 pending: std.ArrayList(Action) = .empty, // actions queued by widgets this frame 795 // focus id -> the live TextInput, refreshed each frame by the views that own 796 // inputs. web/wasm form handling looks widgets up here by focus id. 797 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput(Widget)) = .empty, 798 // focus id -> the page-constant text the web overlay renders into an 799 // input initially, refreshed each frame alongside `text_inputs`. never 800 // the input's live content: the overlay html must not change as the 801 // user types, or the diff in _setOverlay would rebuild the element. 802 input_values: std.AutoHashMapUnmanaged(usize, []const u8) = .empty, 803 nav_back: bool = false, // set by input (escape) to request the native TUI pop a page; see Nav 804 refresh_requested: bool = false, // set by input (ctrl+r) 805 // a requested forward navigation. set this (via navigate) to move to a new 806 // page; Nav.sync builds it and then copies it into current_page, clearing 807 // this back to null. setting current_page directly only updates the url and 808 // does not navigate. 809 next_page: ?RoutablePage = null, 810 is_terminal: bool = false, // true on remote SSH and local TUI 811 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 812 // url. null on the web itself (no footer there). 813 web_port: ?u16 = null, 814 quit_requested: bool = false, 815 816 const Self = @This(); 817 818 // serializable data sent down to web client 819 pub const Data = struct { 820 user_id: ?[]const u8 = null, 821 // a transient outcome to surface from the last /login POST attempt 822 login_failure: ?Home.Auth.Login.Failure = null, 823 current_page: RoutablePage = .default, 824 // whether to render the ANSI art backdrop 825 enable_ansi: bool = true, 826 // true when this session views a single local repo. unlike `local` 827 // (the host-side filesystem source) this travels in the snapshot, so 828 // the wasm side also parses elided link urls and hides the multi-user 829 // chrome. 830 is_local: bool = false, 831 }; 832 833 // a user-initiated state change. widgets enqueue these on the session during 834 // input instead of mutating state or touching the DB themselves; the host 835 // drains them each frame (see applyAndWritePending / applyPending). this keeps DB 836 // side effects out of the widget tree and gives every render path one place to 837 // turn a UI action into a state change + event. 838 pub const Action = union(enum) { 839 toggle_ansi, 840 }; 841 842 pub fn init( 843 arena: *std.heap.ArenaAllocator, 844 repo: *rp.Repo(.xit, evt.admin_repo_opts), 845 data: Data, 846 ) !Self { 847 var session = Self{ 848 .data = data, 849 .arena = arena, 850 // until a host swaps in a page-scoped arena (Nav does this), page 851 // allocations land in the session arena. on the web path that's the 852 // intended behavior, since the whole arena is per-request. 853 .page_arena = arena, 854 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 855 }; 856 try session.loadUserPrefs(); 857 return session; 858 } 859 860 // load the logged-in user's persisted preferences from the db 861 pub fn loadUserPrefs(self: *Self) !void { 862 const user_id = self.data.user_id orelse return; 863 const moment = self.haxy_moment orelse return; 864 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.arena, user_id)) |user| { 865 self.data.enable_ansi = user.enable_ansi; 866 } 867 } 868 869 // the user's email, for authoring event commits 870 pub fn userEmail(self: *Self) ![]const u8 { 871 const user_id = self.data.user_id orelse return "user@haxy"; 872 const moment = self.haxy_moment orelse return "user@haxy"; 873 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.page_arena, user_id)) orelse unreachable; 874 return user.email; 875 } 876 877 // queue an action for the host to drain this frame. 878 pub fn push(self: *Self, action: Action) !void { 879 try self.pending.append(self.arena.allocator(), action); 880 } 881 882 // apply a single action's in-memory effect only (no persistence). 883 fn apply(self: *Self, action: Action) void { 884 switch (action) { 885 .toggle_ansi => self.data.enable_ansi = !self.data.enable_ansi, 886 } 887 } 888 889 // drain the session's queued actions by applying them to the session. 890 // used on the wasm path, which has no repo to persist to. 891 pub fn applyPending(self: *Self) void { 892 for (self.pending.items) |action| self.apply(action); 893 self.pending.clearRetainingCapacity(); 894 } 895 896 // drain the session's queued actions by applying them to the session and 897 // writing them to the db 898 pub fn applyAndWritePending( 899 self: *Self, 900 io: std.Io, 901 allocator: std.mem.Allocator, 902 repo: *rp.Repo(.xit, evt.admin_repo_opts), 903 ) !void { 904 defer self.pending.clearRetainingCapacity(); 905 for (self.pending.items) |action| { 906 self.apply(action); 907 switch (action) { 908 .toggle_ansi => if (self.data.user_id) |user_id| { 909 try evt.User.toggleAnsi(evt.admin_repo_opts, io, allocator, repo, user_id); 910 }, 911 } 912 } 913 } 914 915 // reload the moment from the admin repo 916 pub fn reloadMoment(self: *Self, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 917 self.haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo); 918 } 919 920 // request a forward navigation to `route`; the host consumes next_page 921 // (Nav.sync on the terminal, the wasm tick on the web). 922 pub fn navigate(self: *Session, route: RoutablePage) !void { 923 self.next_page = route; 924 } 925 }; 926 927 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo_maybe: ?*rp.Repo(.xit, evt.admin_repo_opts)) !void { 928 var nav = try Nav.init(allocator, session); 929 defer nav.deinit(allocator); 930 931 var terminal = try term.Terminal.init(io, allocator); 932 defer terminal.deinit(io); 933 934 // set term as active so it will be properly cooked 935 // when a panic/segfault happens 936 term.setActive(&terminal); 937 defer term.setActive(null); 938 939 var last_size = layout.Size{ .width = 0, .height = 0 }; 940 var last_grid = try Grid.init(allocator, last_size); 941 defer last_grid.deinit(); 942 943 while (!terminal.shouldQuit()) { 944 const grid_changed = try terminal.render(&nav.root, &last_grid, &last_size); 945 946 // process any inputs. 947 // 948 // if the grid didn't change, then first do a blocking 949 // read, so the thread will sleep until further input. 950 // after that, all remaining reads are non-blocking so 951 // we can process the rest of the queued inputs. 952 // 953 // if the grid *did* change, then only do non-blocking 954 // reads. we do not want to sleep the thread because 955 // there may be an animation that requires more looping. 956 var blocking = !grid_changed; 957 while (try terminal.readKey(io, blocking)) |key| { 958 blocking = false; 959 try inputKey(allocator, &nav.root, key, session); 960 } 961 962 // local run has no repo to persist to, so just apply in-memory 963 session.applyPending(); 964 965 // pick up data written by other handles so the next navigation 966 // builds its page from a current moment (local mode has no admin repo) 967 if (repo_maybe) |repo| try session.reloadMoment(repo); 968 969 // reconcile navigation: forward to a new page, or back on escape. 970 try nav.sync(allocator, session); 971 972 // the quit button (on the quit tab) asks the host to tear down. 973 if (session.quit_requested) terminal.requestQuit(); 974 975 try nav.root.build(allocator, .{ 976 .min_size = .{ .width = null, .height = null }, 977 .max_size = .{ .width = last_size.width, .height = last_size.height }, 978 }, nav.root.getFocus()); 979 } 980 } 981 982 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 983 switch (key) { 984 // request a navigation pop; the host's Nav.sync goes back a page, or 985 // quits when there's no history left. 986 .escape => session.nav_back = true, 987 .ctrl => |letter| switch (letter) { 988 'r' => session.refresh_requested = true, 989 else => try root.input(allocator, key, root.getFocus()), 990 }, 991 .enter => { 992 const root_focus = root.getFocus(); 993 if (root_focus.grandchild_id) |gid| { 994 // follow a cross-page link 995 if (crossPageLink(root_focus, gid, session.data)) |route| { 996 return session.navigate(route); 997 } 998 } 999 try root.input(allocator, key, root_focus); 1000 }, 1001 .mouse => |mouse| { 1002 if (mouse.action == .press and mouse.action.press == .left) { 1003 const root_focus = root.getFocus(); 1004 var clicked: ?usize = null; 1005 var iter = root_focus.children.iterator(); 1006 while (iter.next()) |entry| { 1007 const child = entry.value_ptr.*; 1008 if (!child.focus.focusable) continue; 1009 const r = child.rect; 1010 if (mouse.x >= r.x and mouse.y >= r.y and 1011 mouse.x < r.x + r.size.width and mouse.y < r.y + r.size.height) 1012 { 1013 clicked = entry.key_ptr.*; 1014 break; 1015 } 1016 } 1017 if (clicked) |focus_id| { 1018 // follow a cross-page link 1019 if (crossPageLink(root_focus, focus_id, session.data)) |route| { 1020 return session.navigate(route); 1021 } 1022 root_focus.setFocus(focus_id); 1023 } 1024 // forward the press into the widget tree so buttons (and any 1025 // future click-aware widgets) can react. widgets that don't 1026 // care about presses ignore it. 1027 try root.input(allocator, key, root.getFocus()); 1028 } else { 1029 try root.input(allocator, key, root.getFocus()); 1030 } 1031 }, 1032 else => try root.input(allocator, key, root.getFocus()), 1033 } 1034 } 1035 1036 // if the focus target at focus_id is an `a:` link that should navigate (a 1037 // different parent page, or a different files directory within the repo page), 1038 // return its route; otherwise null. lets a host turn a click / enter on such a 1039 // link into a navigation rather than a focus change. 1040 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 1041 const current = data.current_page; 1042 const child = root_focus.children.get(focus_id) orelse return null; 1043 const custom = switch (child.focus.kind) { 1044 .custom => |c| c, 1045 else => return null, 1046 }; 1047 const a_prefix = "a:"; 1048 if (!std.mem.startsWith(u8, custom, a_prefix)) return null; 1049 const path = custom[a_prefix.len..]; 1050 // local sessions build (and parse) links with the repo identity elided 1051 const route = (if (data.is_local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path)) orelse return null; 1052 // a link to a different parent page always navigates; within a page, a 1053 // files-directory / commits-page / list-window change navigates while tab 1054 // links stay in-page (header-handled). 1055 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 1056 return null; 1057 } 1058 1059 // a display author, resolved against the admin db at read time 1060 pub const Author = union(enum) { 1061 unknown, 1062 email: []const u8, // an email no user matches 1063 user_name: []const u8, 1064 1065 // the commit author line's email, resolved like initFromDb 1066 pub fn init( 1067 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1068 arena: *std.heap.ArenaAllocator, 1069 author_line: []const u8, 1070 ) !Author { 1071 return initFromDb(haxy_moment, arena, evt.authorEmail(author_line)); 1072 } 1073 1074 // from a record's stored author email: it resolves to the user currently 1075 // holding it, else stays the email. the result is allocated in `arena`, 1076 // so the email may borrow transient memory. 1077 pub fn initFromDb( 1078 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1079 arena: *std.heap.ArenaAllocator, 1080 author_email: ?[]const u8, 1081 ) !Author { 1082 const email = author_email orelse return .unknown; 1083 if (haxy_moment) |moment| { 1084 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 1085 return .{ .user_name = user.name }; 1086 } 1087 } 1088 return .{ .email = try arena.allocator().dupe(u8, email) }; 1089 } 1090 }; 1091 1092 // the "a:" link to user `name`'s page. 1093 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 1094 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 1095 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 1096 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 1097 } 1098 1099 // a focusable " author " box showing `author`, linking to their user page 1100 // when it is a known user 1101 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox(Widget) { 1102 const text = switch (author) { 1103 .unknown => "", 1104 .email, .user_name => |t| t, 1105 }; 1106 var tb = try wgt.TextBox(Widget).init(allocator, text, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none, .label = " author " }); 1107 errdefer tb.deinit(allocator); 1108 tb.getFocus().focusable = true; 1109 switch (author) { 1110 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 1111 else => {}, 1112 } 1113 return tb; 1114 } 1115 1116 // native-TUI navigation 1117 pub const Nav = struct { 1118 root: Widget, 1119 route: RoutablePage, 1120 // backs the current page (its Page data and the page-scoped strings its 1121 // widgets build). owned here, swapped on each navigation. session.page_arena 1122 // tracks whichever of these is current so widgets allocate into it. 1123 arena: *std.heap.ArenaAllocator, 1124 history: std.ArrayList(Entry), 1125 1126 // each retained page keeps its own arena, freed when the page leaves the 1127 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 1128 // long-lived session from accumulating every page it ever visited. 1129 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator }; 1130 1131 // cap on retained back-history so the chain can't grow memory without bound 1132 const max_history: usize = 16; 1133 1134 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 1135 const arena = try allocator.create(std.heap.ArenaAllocator); 1136 arena.* = std.heap.ArenaAllocator.init(allocator); 1137 errdefer { 1138 arena.deinit(); 1139 allocator.destroy(arena); 1140 } 1141 1142 session.page_arena = arena; 1143 const route = session.data.current_page; 1144 1145 const page = try arena.allocator().create(Page); 1146 page.* = try Page.init(arena, session, route); 1147 return .{ 1148 .root = try initRoot(allocator, page, session), 1149 .route = route, 1150 .arena = arena, 1151 .history = .empty, 1152 }; 1153 } 1154 1155 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 1156 self.root.deinit(allocator); 1157 freeArena(allocator, self.arena); 1158 for (self.history.items) |*entry| { 1159 entry.root.deinit(allocator); 1160 freeArena(allocator, entry.arena); 1161 } 1162 self.history.deinit(allocator); 1163 } 1164 1165 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 1166 arena.deinit(); 1167 allocator.destroy(arena); 1168 } 1169 1170 // reconcile the displayed root with the session's navigation state. a 1171 // forward nav (current_page moved to a different parent page) pushes the 1172 // current root and builds the new page in a fresh arena; a back request 1173 // frees the current page and restores the previous one. when escape is 1174 // pressed with no history left we switch to the quit tab instead of quitting. 1175 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 1176 // refresh: rebuild the current page in place from a current moment 1177 if (session.refresh_requested) { 1178 session.refresh_requested = false; 1179 if (session.haxy_moment != null or session.local != null) { 1180 const arena = try allocator.create(std.heap.ArenaAllocator); 1181 arena.* = std.heap.ArenaAllocator.init(allocator); 1182 errdefer freeArena(allocator, arena); 1183 1184 session.page_arena = arena; 1185 1186 const page = try arena.allocator().create(Page); 1187 page.* = try Page.init(arena, session, self.route); 1188 const new_root = try initRoot(allocator, page, session); 1189 1190 self.root.deinit(allocator); 1191 freeArena(allocator, self.arena); 1192 self.root = new_root; 1193 self.arena = arena; 1194 } 1195 return; 1196 } 1197 1198 if (session.nav_back) { 1199 session.nav_back = false; 1200 if (self.history.pop()) |entry| { 1201 self.root.deinit(allocator); 1202 freeArena(allocator, self.arena); 1203 self.root = entry.root; 1204 self.route = entry.route; 1205 self.arena = entry.arena; 1206 session.page_arena = entry.arena; 1207 session.data.current_page = entry.route; 1208 return; 1209 } 1210 // nothing to go back to; switch to the quit confirmation 1211 const root_focus = self.root.getFocus(); 1212 var iter = root_focus.children.iterator(); 1213 while (iter.next()) |entry| { 1214 switch (entry.value_ptr.focus.kind) { 1215 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 1216 root_focus.setFocus(entry.key_ptr.*); 1217 // a Stack only builds its selected child, so the quit 1218 // button isn't in the focus tree until a build runs with 1219 // the quit tab selected. build once, then send a 1220 // synthetic arrow_down to drop focus from the tab onto 1221 // the button so it's ready to confirm. 1222 try self.root.build(allocator, .{ 1223 .min_size = .{ .width = null, .height = 40 }, 1224 .max_size = .{ .width = 80, .height = null }, 1225 }, root_focus); 1226 try self.root.input(allocator, .arrow_down, root_focus); 1227 break; 1228 }, 1229 else => {}, 1230 } 1231 } 1232 return; 1233 } 1234 1235 // forward navigation: navigate() set next_page to the page to move to (a 1236 // cross-page link or tab change crossing pages) 1237 if (session.next_page) |route| { 1238 session.next_page = null; 1239 if (session.haxy_moment == null and session.local == null) return; 1240 // the page we navigated to becomes the current page 1241 session.data.current_page = route; 1242 1243 const arena = try allocator.create(std.heap.ArenaAllocator); 1244 arena.* = std.heap.ArenaAllocator.init(allocator); 1245 errdefer freeArena(allocator, arena); 1246 1247 session.page_arena = arena; 1248 1249 const page = try arena.allocator().create(Page); 1250 page.* = try Page.init(arena, session, route); 1251 const new_root = try initRoot(allocator, page, session); 1252 1253 try self.history.append(allocator, .{ .root = self.root, .route = self.route, .arena = self.arena }); 1254 // drop the oldest entry (freeing its widget tree and arena) once over cap 1255 if (self.history.items.len > max_history) { 1256 var oldest = self.history.orderedRemove(0); 1257 oldest.root.deinit(allocator); 1258 freeArena(allocator, oldest.arena); 1259 } 1260 self.root = new_root; 1261 self.route = route; 1262 self.arena = arena; 1263 } 1264 } 1265 }; 1266 1267 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 1268 const page_widget: Widget = switch (page.*) { 1269 .home => |*p| .{ .home = try .init(allocator, p, session) }, 1270 .user => |*p| .{ .user = try .init(allocator, p, session) }, 1271 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 1272 }; 1273 1274 const demon_art = @embedFile("embed/demon.ans"); 1275 1276 // on the TUI/SSH, the page sits above a one-row footer showing the url 1277 var root = if (session.is_terminal) blk: { 1278 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 1279 errdefer box.deinit(allocator); 1280 const bg_id = bg_blk: { 1281 var background = try AnsiBackground.init(allocator, page_widget, demon_art, session); 1282 errdefer background.deinit(allocator); 1283 const id = background.getFocus().id; 1284 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 1285 break :bg_blk id; 1286 }; 1287 { 1288 var footer = try Footer.init(allocator, session); 1289 errdefer footer.deinit(allocator); 1290 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 1291 } 1292 box.getFocus().child_id = bg_id; 1293 break :blk Widget{ .box = box }; 1294 } else Widget{ .background = try AnsiBackground.init(allocator, page_widget, demon_art, session) }; 1295 errdefer root.deinit(allocator); 1296 1297 // input-owning views build their TextInputs in init — so reset the 1298 // focus-id -> *TextInput map here 1299 session.text_inputs.clearRetainingCapacity(); 1300 session.input_values.clearRetainingCapacity(); 1301 1302 try root.build(allocator, .{ 1303 .min_size = .{ .width = null, .height = 40 }, 1304 .max_size = .{ .width = 100, .height = null }, 1305 }, root.getFocus()); 1306 1307 return root; 1308 } 1309 1310 pub const Widget = union(enum) { 1311 text: wgt.Text(Widget), 1312 box: wgt.Box(Widget), 1313 text_box: wgt.TextBox(Widget), 1314 text_input: wgt.TextInput(Widget), 1315 scroll: wgt.Scroll(Widget), 1316 stack: wgt.Stack(Widget), 1317 flow_box: FlowBox, 1318 flow_box_scroll: FlowBox.Scroll, 1319 tag_flow: TagFlow, 1320 spacer: Spacer, 1321 center: Center, 1322 background: AnsiBackground, 1323 home: Home.View, 1324 user: User.View, 1325 repo: Repo.View, 1326 quit: Quit.View, 1327 title: Title.View, 1328 sub_title: SubTitle.View, 1329 home_header: Home.Header.View, 1330 user_header: User.Header.View, 1331 repo_header: Repo.Header.View, 1332 repo_files_header: Repo.Files.Header.View, 1333 repo_commits_header: Repo.Commits.Header.View, 1334 repo_issues_header: Repo.Issues.Header, 1335 repo_files: Repo.Files.View, 1336 repo_commits: Repo.Commits.View, 1337 repo_refs: Repo.Refs.View, 1338 repo_issues: Repo.Issues.View, 1339 home_users: Home.Users.View, 1340 home_repos: Home.Repos.View, 1341 auth_tab: Home.Header.AuthTab.View, 1342 home_settings: Home.Settings.View, 1343 home_auth: Home.Auth.View, 1344 footer: Footer, 1345 1346 pub fn deinit(self: *Widget, allocator: std.mem.Allocator) void { 1347 switch (self.*) { 1348 inline else => |*case| case.deinit(allocator), 1349 } 1350 } 1351 1352 pub fn build(self: *Widget, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) anyerror!void { 1353 switch (self.*) { 1354 inline else => |*case| try case.build(allocator, constraint, root_focus), 1355 } 1356 } 1357 1358 pub fn input(self: *Widget, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) anyerror!void { 1359 switch (self.*) { 1360 inline else => |*case| try case.input(allocator, key, root_focus), 1361 } 1362 } 1363 1364 pub fn clearGrid(self: *Widget) void { 1365 switch (self.*) { 1366 inline else => |*case| case.clearGrid(), 1367 } 1368 } 1369 1370 pub fn getGrid(self: Widget) ?Grid { 1371 switch (self) { 1372 inline else => |*case| return case.getGrid(), 1373 } 1374 } 1375 1376 pub fn getFocus(self: *Widget) *Focus { 1377 switch (self.*) { 1378 inline else => |*case| return case.getFocus(), 1379 } 1380 } 1381 }; 1382 1383 // move the focused row in `box` by `delta`, clamped to the ends, scrolling 1384 // `scroll` to keep it visible. 1385 pub fn moveRowFocus(box: *wgt.Box(Widget), scroll: *wgt.Scroll(Widget), root_focus: *Focus, delta: isize) void { 1386 const keys = box.children.keys(); 1387 if (keys.len == 0) return; 1388 const cur_id = box.getFocus().child_id orelse return; 1389 const cur: isize = @intCast(box.children.getIndex(cur_id) orelse return); 1390 const last: isize = @intCast(keys.len - 1); 1391 const next: usize = @intCast(std.math.clamp(cur + delta, 0, last)); 1392 if (next == @as(usize, @intCast(cur))) return; 1393 root_focus.setFocus(keys[next]); 1394 if (box.children.values()[next].rect) |rect| scroll.scrollToRect(rect); 1395 } 1396 1397 pub const FlowBox = struct { 1398 focus: *Focus, 1399 grid: ?Grid, 1400 text_boxes: std.ArrayList(wgt.TextBox(Widget)), 1401 // backs the per-item strings the text boxes borrow: each box's `content` 1402 // and, for link items, its `.custom` focus kind (e.g. "a:/user/foo"). reset 1403 // wholesale on each setItems so there's no per-string ownership to track. 1404 arena: std.heap.ArenaAllocator, 1405 // column count from the last build — FlowBox.Scroll.input uses it so arrow 1406 // up/down can step by a row's worth of items. 1407 last_cols: usize, 1408 options: Options, 1409 1410 const border_rows: usize = 2; 1411 1412 pub const Options = struct { 1413 cell_width: usize = 40, 1414 cell_height: usize = 3, 1415 }; 1416 1417 pub fn init(allocator: std.mem.Allocator, options: Options) !FlowBox { 1418 return .{ 1419 .focus = try Focus.create(allocator, .container), 1420 .grid = null, 1421 .text_boxes = .empty, 1422 .arena = std.heap.ArenaAllocator.init(allocator), 1423 .last_cols = 1, 1424 .options = options, 1425 }; 1426 } 1427 1428 pub fn deinit(self: *FlowBox, allocator: std.mem.Allocator) void { 1429 self.focus.destroy(allocator); 1430 if (self.grid) |*grid| { 1431 grid.deinit(); 1432 self.grid = null; 1433 } 1434 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1435 self.text_boxes.deinit(allocator); 1436 self.arena.deinit(); 1437 } 1438 1439 // one flow item: its display text plus an optional link. a non-empty `link` 1440 // sets the item's focus kind such as `.{ .custom = "a:/user/foo" }`, which 1441 // the web renderer turns into an anchor. 1442 pub const Item = struct { text: []const u8, link: []const u8 = "" }; 1443 1444 // both the item text and the link are copied into the arena, so the caller's 1445 // slices needn't outlive this call. 1446 pub fn setItems(self: *FlowBox, allocator: std.mem.Allocator, items: []const Item) !void { 1447 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1448 self.text_boxes.clearAndFree(allocator); 1449 1450 // the old text boxes (and their borrowed content/links) are gone now, so 1451 // the arena that backed those strings can be reclaimed. 1452 _ = self.arena.reset(.retain_capacity); 1453 const aa = self.arena.allocator(); 1454 1455 self.focus.clear(); 1456 self.focus.child_id = null; 1457 1458 for (items) |item| { 1459 const line = try aa.dupe(u8, item.text); 1460 1461 var text_box = try wgt.TextBox(Widget).init(allocator, line, .{ .border_style = .hidden, .rounded_corners = true, .wrap_kind = .word }); 1462 errdefer text_box.deinit(allocator); 1463 text_box.getFocus().focusable = true; 1464 1465 if (item.link.len > 0) { 1466 text_box.getFocus().kind = .{ .custom = try aa.dupe(u8, item.link) }; 1467 } 1468 1469 try self.text_boxes.append(allocator, text_box); 1470 } 1471 1472 if (self.text_boxes.items.len > 0) { 1473 self.focus.child_id = self.text_boxes.items[0].getFocus().id; 1474 } 1475 } 1476 1477 pub fn build(self: *FlowBox, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1478 self.clearGrid(); 1479 self.focus.clear(); 1480 1481 const cell_width = self.options.cell_width; 1482 const max_width = constraint.max_size.width orelse cell_width; 1483 const cols = if (cell_width == 0) 1 else @max(1, max_width / cell_width); 1484 self.last_cols = cols; 1485 1486 const count = self.text_boxes.items.len; 1487 if (count == 0) return; 1488 const slot_height = self.options.cell_height + border_rows; 1489 if (slot_height == 0) return; 1490 1491 // build at the slot size so every text box fits a single grid cell 1492 for (self.text_boxes.items) |*tb| { 1493 tb.options.border_style = if (self.focus.child_id == tb.getFocus().id) .single else .hidden; 1494 try tb.build(allocator, .{ 1495 .min_size = .{ .width = cell_width, .height = null }, 1496 .max_size = .{ .width = cell_width, .height = slot_height }, 1497 }, root_focus); 1498 } 1499 1500 const rows = (count + cols - 1) / cols; 1501 const content_height = rows * slot_height; 1502 const total_width = cols * cell_width; 1503 if (total_width == 0 or content_height == 0) return; 1504 1505 var grid = try Grid.init(allocator, .{ .width = total_width, .height = content_height }); 1506 errdefer grid.deinit(); 1507 1508 for (self.text_boxes.items, 0..) |*tb, i| { 1509 const tb_grid = tb.getGrid() orelse continue; 1510 const col = i % cols; 1511 const row = i / cols; 1512 const cell_x = col * cell_width; 1513 const cell_y = row * slot_height; 1514 try self.focus.addChild(allocator, tb.getFocus(), tb_grid.size, cell_x, cell_y); 1515 try grid.drawGrid(tb_grid, cell_x, cell_y); 1516 } 1517 1518 self.grid = grid; 1519 } 1520 1521 pub fn input(self: *FlowBox, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1522 _ = self; 1523 _ = allocator; 1524 _ = key; 1525 _ = root_focus; 1526 } 1527 1528 pub fn clearGrid(self: *FlowBox) void { 1529 if (self.grid) |*grid| { 1530 grid.deinit(); 1531 self.grid = null; 1532 } 1533 for (self.text_boxes.items) |*tb| tb.clearGrid(); 1534 } 1535 1536 pub fn getGrid(self: FlowBox) ?Grid { 1537 return self.grid; 1538 } 1539 1540 pub fn getFocus(self: *FlowBox) *Focus { 1541 return self.focus; 1542 } 1543 1544 pub fn cellRect(self: FlowBox, index: usize) ?layout.IRect { 1545 if (self.last_cols == 0 or index >= self.text_boxes.items.len) return null; 1546 const slot_height = self.options.cell_height + border_rows; 1547 const col = index % self.last_cols; 1548 const row = index / self.last_cols; 1549 return .{ 1550 .x = @intCast(col * self.options.cell_width), 1551 .y = @intCast(row * slot_height), 1552 .size = .{ .width = self.options.cell_width, .height = slot_height }, 1553 }; 1554 } 1555 1556 pub fn indexOfFocusId(self: FlowBox, focus_id: usize) ?usize { 1557 for (self.text_boxes.items, 0..) |tb, i| { 1558 if (tb.box.focus.id == focus_id) return i; 1559 } 1560 return null; 1561 } 1562 1563 pub const Scroll = struct { 1564 scroll: wgt.Scroll(Widget), 1565 1566 pub fn init(allocator: std.mem.Allocator, options: FlowBox.Options, web_native: bool) !Scroll { 1567 var layout_inner = try FlowBox.init(allocator, options); 1568 errdefer layout_inner.deinit(allocator); 1569 var scroll = try wgt.Scroll(Widget).init(allocator, .{ .flow_box = layout_inner }, .{ .direction = .vert, .web_native = web_native }); 1570 errdefer scroll.deinit(allocator); 1571 return .{ .scroll = scroll }; 1572 } 1573 1574 pub fn deinit(self: *Scroll, allocator: std.mem.Allocator) void { 1575 self.scroll.deinit(allocator); 1576 } 1577 1578 pub fn setItems(self: *Scroll, allocator: std.mem.Allocator, items: []const Item) !void { 1579 self.scroll.x = 0; 1580 self.scroll.y = 0; 1581 try self.inner().setItems(allocator, items); 1582 } 1583 1584 pub fn build(self: *Scroll, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1585 try self.scroll.build(allocator, constraint, root_focus); 1586 } 1587 1588 pub fn input(self: *Scroll, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1589 _ = allocator; 1590 const in = self.inner(); 1591 const child_id = in.focus.child_id orelse return; 1592 const current_index = in.indexOfFocusId(child_id) orelse return; 1593 const count = in.text_boxes.items.len; 1594 if (count == 0) return; 1595 const cols = in.last_cols; 1596 const slot_height = in.options.cell_height + FlowBox.border_rows; 1597 1598 var index = current_index; 1599 switch (key) { 1600 .arrow_up => index -|= cols, 1601 .arrow_down => if (index + cols < count) { 1602 index += cols; 1603 }, 1604 .arrow_left => index -|= 1, 1605 .arrow_right => if (index + 1 < count) { 1606 index += 1; 1607 }, 1608 .home => index = 0, 1609 .end => index = count - 1, 1610 .page_up => { 1611 if (self.scroll.grid) |grid| if (slot_height > 0) { 1612 const rows_per_page = grid.size.height / slot_height; 1613 index -|= rows_per_page * cols; 1614 }; 1615 }, 1616 .page_down => { 1617 if (self.scroll.grid) |grid| if (slot_height > 0) { 1618 const rows_per_page = grid.size.height / slot_height; 1619 index = @min(index + rows_per_page * cols, count - 1); 1620 }; 1621 }, 1622 // scroll wheel moves the focused cell by a full row so the 1623 // viewport (via scrollToRect) follows in row-sized steps, 1624 // matching how a scroll wheel feels in a grid view. 1625 .mouse => |mouse| switch (mouse.action) { 1626 .scroll => |dir| switch (dir) { 1627 .up => index -|= cols, 1628 .down => if (index + cols < count) { 1629 index += cols; 1630 }, 1631 }, 1632 else => {}, 1633 }, 1634 else => {}, 1635 } 1636 1637 if (index != current_index) { 1638 root_focus.setFocus(in.text_boxes.items[index].getFocus().id); 1639 if (in.cellRect(index)) |rect| { 1640 self.scroll.scrollToRect(rect); 1641 } 1642 } 1643 } 1644 1645 pub fn clearGrid(self: *Scroll) void { 1646 self.scroll.clearGrid(); 1647 } 1648 1649 pub fn getGrid(self: Scroll) ?Grid { 1650 return self.scroll.getGrid(); 1651 } 1652 1653 pub fn getFocus(self: *Scroll) *Focus { 1654 return self.scroll.getFocus(); 1655 } 1656 1657 pub fn getSelectedIndex(self: Scroll) ?usize { 1658 const in = self.scroll.child.flow_box; 1659 const child_id = in.focus.child_id orelse return null; 1660 return in.indexOfFocusId(child_id); 1661 } 1662 1663 fn inner(self: *Scroll) *FlowBox { 1664 return &self.scroll.child.flow_box; 1665 } 1666 }; 1667 }; 1668 1669 // a left-to-right flow of variable-width focusable items that wraps at the 1670 // available width, like words in a paragraph. unlike FlowBox there is no cell 1671 // grid: each item is as wide as its text. selection movement is driven by the 1672 // owning view via indexOfFocusId/verticalNeighbor. 1673 pub const TagFlow = struct { 1674 focus: *Focus, 1675 grid: ?Grid, 1676 text_boxes: std.ArrayList(wgt.TextBox(Widget)), 1677 // last build's item rects (content space), for vertical navigation and 1678 // scroll-into-view. 1679 rects: std.ArrayList(layout.IRect), 1680 // backs the per-item strings the text boxes borrow. 1681 arena: std.heap.ArenaAllocator, 1682 1683 pub const Item = struct { text: []const u8, link: []const u8 = "" }; 1684 1685 pub fn init(allocator: std.mem.Allocator) !TagFlow { 1686 return .{ 1687 .focus = try Focus.create(allocator, .container), 1688 .grid = null, 1689 .text_boxes = .empty, 1690 .rects = .empty, 1691 .arena = std.heap.ArenaAllocator.init(allocator), 1692 }; 1693 } 1694 1695 pub fn deinit(self: *TagFlow, allocator: std.mem.Allocator) void { 1696 self.focus.destroy(allocator); 1697 if (self.grid) |*grid| { 1698 grid.deinit(); 1699 self.grid = null; 1700 } 1701 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1702 self.text_boxes.deinit(allocator); 1703 self.rects.deinit(allocator); 1704 self.arena.deinit(); 1705 } 1706 1707 // both the item text and the link are copied into the arena, so the caller's 1708 // slices needn't outlive this call. 1709 pub fn setItems(self: *TagFlow, allocator: std.mem.Allocator, items: []const Item) !void { 1710 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1711 self.text_boxes.clearAndFree(allocator); 1712 1713 _ = self.arena.reset(.retain_capacity); 1714 const aa = self.arena.allocator(); 1715 1716 self.focus.clear(); 1717 self.focus.child_id = null; 1718 1719 for (items) |item| { 1720 const line = try aa.dupe(u8, item.text); 1721 1722 var text_box = try wgt.TextBox(Widget).init(allocator, line, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none }); 1723 errdefer text_box.deinit(allocator); 1724 text_box.getFocus().focusable = true; 1725 1726 if (item.link.len > 0) { 1727 text_box.getFocus().kind = .{ .custom = try aa.dupe(u8, item.link) }; 1728 } 1729 1730 try self.text_boxes.append(allocator, text_box); 1731 } 1732 1733 if (self.text_boxes.items.len > 0) { 1734 self.focus.child_id = self.text_boxes.items[0].getFocus().id; 1735 } 1736 } 1737 1738 pub fn build(self: *TagFlow, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1739 self.clearGrid(); 1740 self.focus.clear(); 1741 1742 if (self.text_boxes.items.len == 0) return; 1743 const max_width = constraint.max_size.width orelse 80; 1744 if (max_width == 0) return; 1745 1746 // lay the items out left to right, wrapping to a new row when the next 1747 // one wouldn't fit. 1748 self.rects.clearRetainingCapacity(); 1749 var x: usize = 0; 1750 var y: usize = 0; 1751 var row_height: usize = 0; 1752 var total_width: usize = 0; 1753 for (self.text_boxes.items) |*tb| { 1754 try tb.build(allocator, .{ 1755 .min_size = .{ .width = null, .height = null }, 1756 .max_size = .{ .width = max_width, .height = null }, 1757 }, root_focus); 1758 const tb_grid_maybe = tb.getGrid(); 1759 const w: usize = if (tb_grid_maybe) |g| g.size.width else 0; 1760 const h: usize = if (tb_grid_maybe) |g| g.size.height else 0; 1761 if (x > 0 and x + w > max_width) { 1762 x = 0; 1763 y += row_height; 1764 row_height = 0; 1765 } 1766 try self.rects.append(allocator, .{ .x = @intCast(x), .y = @intCast(y), .size = .{ .width = w, .height = h } }); 1767 if (h > row_height) row_height = h; 1768 x += w; 1769 if (x > total_width) total_width = x; 1770 } 1771 1772 const total_height = y + row_height; 1773 if (total_width == 0 or total_height == 0) return; 1774 1775 var grid = try Grid.init(allocator, .{ .width = total_width, .height = total_height }); 1776 errdefer grid.deinit(); 1777 1778 for (self.text_boxes.items, self.rects.items) |*tb, rect| { 1779 const tb_grid = tb.getGrid() orelse continue; 1780 try self.focus.addChild(allocator, tb.getFocus(), tb_grid.size, @intCast(rect.x), @intCast(rect.y)); 1781 try grid.drawGrid(tb_grid, @intCast(rect.x), @intCast(rect.y)); 1782 } 1783 1784 self.grid = grid; 1785 } 1786 1787 pub fn input(self: *TagFlow, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1788 _ = self; 1789 _ = allocator; 1790 _ = key; 1791 _ = root_focus; 1792 } 1793 1794 pub fn clearGrid(self: *TagFlow) void { 1795 if (self.grid) |*grid| { 1796 grid.deinit(); 1797 self.grid = null; 1798 } 1799 for (self.text_boxes.items) |*tb| tb.clearGrid(); 1800 } 1801 1802 pub fn getGrid(self: TagFlow) ?Grid { 1803 return self.grid; 1804 } 1805 1806 pub fn getFocus(self: *TagFlow) *Focus { 1807 return self.focus; 1808 } 1809 1810 pub fn indexOfFocusId(self: TagFlow, focus_id: usize) ?usize { 1811 for (self.text_boxes.items, 0..) |tb, i| { 1812 if (tb.box.focus.id == focus_id) return i; 1813 } 1814 return null; 1815 } 1816 1817 // the first item of the row below (when `downward`) or above, or null at 1818 // the flow's edge. items are laid out in order, so y is nondecreasing. 1819 pub fn rowStep(self: TagFlow, index: usize, downward: bool) ?usize { 1820 const rects = self.rects.items; 1821 if (index >= rects.len) return null; 1822 const cur_y = rects[index].y; 1823 if (downward) { 1824 for (rects[index + 1 ..], index + 1..) |r, i| { 1825 if (r.y > cur_y) return i; 1826 } 1827 return null; 1828 } 1829 // walk the earlier rows; the last one visited is the row above. 1830 var prev_first: ?usize = null; 1831 var i: usize = 0; 1832 while (i < rects.len and rects[i].y < cur_y) { 1833 prev_first = i; 1834 const y = rects[i].y; 1835 while (i < rects.len and rects[i].y == y) i += 1; 1836 } 1837 return prev_first; 1838 } 1839 }; 1840 1841 // an invisible widget that fills the horizontal space granted by its parent. 1842 // used inside Box(horiz) with a min_size so the box reserves space for the 1843 // children that follow, pushing them to the right. 1844 pub const Spacer = struct { 1845 focus: *Focus, 1846 grid: ?Grid, 1847 1848 pub fn init(allocator: std.mem.Allocator) !Spacer { 1849 return .{ 1850 .focus = try Focus.create(allocator, .container), 1851 .grid = null, 1852 }; 1853 } 1854 1855 pub fn deinit(self: *Spacer, allocator: std.mem.Allocator) void { 1856 self.focus.destroy(allocator); 1857 if (self.grid) |*grid| { 1858 grid.deinit(); 1859 self.grid = null; 1860 } 1861 } 1862 1863 pub fn build(self: *Spacer, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1864 _ = root_focus; 1865 self.clearGrid(); 1866 const width = constraint.max_size.width orelse return; 1867 if (width == 0) return; 1868 self.grid = try Grid.init(allocator, .{ .width = width, .height = 1 }); 1869 } 1870 1871 pub fn input(self: *Spacer, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1872 _ = self; 1873 _ = allocator; 1874 _ = key; 1875 _ = root_focus; 1876 } 1877 1878 pub fn clearGrid(self: *Spacer) void { 1879 if (self.grid) |*grid| { 1880 grid.deinit(); 1881 self.grid = null; 1882 } 1883 } 1884 1885 pub fn getGrid(self: Spacer) ?Grid { 1886 return self.grid; 1887 } 1888 1889 pub fn getFocus(self: *Spacer) *Focus { 1890 return self.focus; 1891 } 1892 }; 1893 1894 // a one-row, non-focusable status bar showing the current page's url 1895 pub const Footer = struct { 1896 focus: *Focus, 1897 grid: ?Grid, 1898 session: *Session, 1899 arena: std.heap.ArenaAllocator, 1900 1901 pub fn init(allocator: std.mem.Allocator, session: *Session) !Footer { 1902 return .{ 1903 .focus = try Focus.create(allocator, .container), 1904 .grid = null, 1905 .session = session, 1906 .arena = std.heap.ArenaAllocator.init(allocator), 1907 }; 1908 } 1909 1910 pub fn deinit(self: *Footer, allocator: std.mem.Allocator) void { 1911 self.focus.destroy(allocator); 1912 if (self.grid) |*grid| grid.deinit(); 1913 self.arena.deinit(); 1914 } 1915 1916 pub fn build(self: *Footer, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1917 _ = root_focus; 1918 self.clearGrid(); 1919 const width = constraint.max_size.width orelse return; 1920 if (width == 0) return; 1921 1922 _ = self.arena.reset(.retain_capacity); 1923 const aa = self.arena.allocator(); 1924 const path = self.session.data.current_page.toUrl(&self.arena) catch return; 1925 const text = if (self.session.web_port) |port| 1926 std.fmt.allocPrint(aa, "http://localhost:{d}{s}", .{ port, path }) catch return 1927 else 1928 path; 1929 1930 var grid = try Grid.init(allocator, .{ .width = width, .height = 1 }); 1931 errdefer grid.deinit(); 1932 var utf8 = (std.unicode.Utf8View.init(text) catch return).iterator(); 1933 var i: usize = 0; 1934 while (utf8.nextCodepointSlice()) |ch| { 1935 if (i == width) break; 1936 grid.cells.items[try grid.cells.at(.{ 0, i })].rune = ch; 1937 i += 1; 1938 } 1939 self.grid = grid; 1940 } 1941 1942 pub fn input(self: *Footer, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1943 _ = self; 1944 _ = allocator; 1945 _ = key; 1946 _ = root_focus; 1947 } 1948 1949 pub fn clearGrid(self: *Footer) void { 1950 if (self.grid) |*grid| { 1951 grid.deinit(); 1952 self.grid = null; 1953 } 1954 } 1955 1956 pub fn getGrid(self: Footer) ?Grid { 1957 return self.grid; 1958 } 1959 1960 pub fn getFocus(self: *Footer) *Focus { 1961 return self.focus; 1962 } 1963 }; 1964 1965 // a single-child wrapper that builds the child at its natural size and 1966 // positions its grid in the middle of the area granted by the parent 1967 pub const Center = struct { 1968 focus: *Focus, 1969 grid: ?Grid, 1970 child: *Widget, 1971 1972 pub fn init(allocator: std.mem.Allocator, child_widget: Widget) !Center { 1973 const child = try allocator.create(Widget); 1974 errdefer allocator.destroy(child); 1975 child.* = child_widget; 1976 return .{ 1977 .focus = try Focus.create(allocator, .container), 1978 .grid = null, 1979 .child = child, 1980 }; 1981 } 1982 1983 pub fn deinit(self: *Center, allocator: std.mem.Allocator) void { 1984 self.focus.destroy(allocator); 1985 if (self.grid) |*grid| { 1986 grid.deinit(); 1987 self.grid = null; 1988 } 1989 self.child.deinit(allocator); 1990 allocator.destroy(self.child); 1991 } 1992 1993 pub fn build(self: *Center, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1994 self.clearGrid(); 1995 self.getFocus().clear(); 1996 1997 // build the child without forcing it to fill min_size; it sizes 1998 // itself to its content within the available max. 1999 try self.child.build(allocator, .{ 2000 .min_size = .{ .width = null, .height = null }, 2001 .max_size = constraint.max_size, 2002 }, root_focus); 2003 2004 const child_grid = self.child.getGrid() orelse return; 2005 2006 // prefer max when given; otherwise grow to max(min, child) so that 2007 // when only a min is set (e.g. the wasm path passes viewport rows 2008 // as min_height with no max), we can still vertically center while 2009 // letting taller content extend past the min. 2010 const width = if (constraint.max_size.width) |w| w else if (constraint.min_size.width) |min_w| @max(min_w, child_grid.size.width) else child_grid.size.width; 2011 const height = if (constraint.max_size.height) |h| h else if (constraint.min_size.height) |min_h| @max(min_h, child_grid.size.height) else child_grid.size.height; 2012 if (width == 0 or height == 0) return; 2013 2014 const offset_x: usize = (width -| child_grid.size.width) / 2; 2015 const offset_y: usize = (height -| child_grid.size.height) / 2; 2016 2017 var grid = try Grid.init(allocator, .{ .width = width, .height = height }); 2018 errdefer grid.deinit(); 2019 try grid.drawGrid(child_grid, offset_x, offset_y); 2020 try self.getFocus().addChild(allocator, self.child.getFocus(), child_grid.size, offset_x, offset_y); 2021 self.getFocus().child_id = self.child.getFocus().id; 2022 2023 self.grid = grid; 2024 } 2025 2026 pub fn input(self: *Center, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 2027 try self.child.input(allocator, key, root_focus); 2028 } 2029 2030 pub fn clearGrid(self: *Center) void { 2031 if (self.grid) |*grid| { 2032 grid.deinit(); 2033 self.grid = null; 2034 } 2035 self.child.clearGrid(); 2036 } 2037 2038 pub fn getGrid(self: Center) ?Grid { 2039 return self.grid; 2040 } 2041 2042 pub fn getFocus(self: *Center) *Focus { 2043 return self.focus; 2044 } 2045 }; 2046 2047 // renders truecolor ANSI art 2048 pub const AnsiArt = struct { 2049 focus: *Focus, 2050 grid: ?Grid, 2051 content: []const u8, 2052 2053 pub fn init(allocator: std.mem.Allocator, content: []const u8) !AnsiArt { 2054 return .{ 2055 .focus = try Focus.create(allocator, .container), 2056 .grid = null, 2057 .content = content, 2058 }; 2059 } 2060 2061 pub fn deinit(self: *AnsiArt, allocator: std.mem.Allocator) void { 2062 self.focus.destroy(allocator); 2063 if (self.grid) |*grid| { 2064 grid.deinit(); 2065 self.grid = null; 2066 } 2067 } 2068 2069 pub fn build(self: *AnsiArt, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 2070 _ = root_focus; 2071 self.clearGrid(); 2072 2073 // parse into rows of cells, then copy into a rectangular grid 2074 var rows: std.ArrayList(std.ArrayList(Grid.Cell)) = .empty; 2075 defer { 2076 for (rows.items) |*row| row.deinit(allocator); 2077 rows.deinit(allocator); 2078 } 2079 var row: std.ArrayList(Grid.Cell) = .empty; 2080 errdefer row.deinit(allocator); 2081 2082 var style: Grid.Style = .{}; 2083 var width: usize = 0; 2084 const content = self.content; 2085 var i: usize = 0; 2086 while (i < content.len) { 2087 const byte = content[i]; 2088 if (byte == '\n') { 2089 width = @max(width, row.items.len); 2090 try rows.append(allocator, row); 2091 row = .empty; 2092 i += 1; 2093 } else if (byte == 0x1B and i + 1 < content.len and content[i + 1] == '[') { 2094 // CSI: scan to the final byte (0x40..0x7E); apply it if it's 'm' 2095 var j = i + 2; 2096 while (j < content.len and !(content[j] >= 0x40 and content[j] <= 0x7E)) j += 1; 2097 if (j >= content.len) { 2098 i = content.len; // malformed trailing escape; stop 2099 } else { 2100 if (content[j] == 'm') applySgr(&style, content[i + 2 .. j]); 2101 i = j + 1; 2102 } 2103 } else { 2104 const len = std.unicode.utf8ByteSequenceLength(byte) catch 1; 2105 const end = @min(content.len, i + len); 2106 const rune = content[i..end]; 2107 const transparent = end - i == 1 and rune[0] == ' ' and 2108 style.fg == null and style.bg == null and !style.inverted; 2109 try row.append(allocator, .{ 2110 .rune = if (transparent) null else rune, 2111 .style = style, 2112 }); 2113 i = end; 2114 } 2115 } 2116 // a trailing row with content but no closing newline 2117 if (row.items.len > 0) { 2118 width = @max(width, row.items.len); 2119 try rows.append(allocator, row); 2120 } else { 2121 row.deinit(allocator); 2122 } 2123 row = .empty; // ownership moved into rows (or freed); keep errdefer safe 2124 2125 const height = rows.items.len; 2126 if (width == 0 or height == 0) return; 2127 2128 const clamped_w = @min(width, constraint.max_size.width orelse width); 2129 const clamped_h = @min(height, constraint.max_size.height orelse height); 2130 2131 var grid = try Grid.init(allocator, .{ .width = clamped_w, .height = clamped_h }); 2132 errdefer grid.deinit(); 2133 for (rows.items[0..clamped_h], 0..) |r, y| { 2134 const n = @min(r.items.len, clamped_w); 2135 for (r.items[0..n], 0..) |cell, x| { 2136 grid.cells.items[try grid.cells.at(.{ y, x })] = cell; 2137 } 2138 } 2139 self.grid = grid; 2140 } 2141 2142 pub fn clearGrid(self: *AnsiArt) void { 2143 if (self.grid) |*grid| { 2144 grid.deinit(); 2145 self.grid = null; 2146 } 2147 } 2148 2149 pub fn getGrid(self: AnsiArt) ?Grid { 2150 return self.grid; 2151 } 2152 2153 pub fn getFocus(self: *AnsiArt) *Focus { 2154 return self.focus; 2155 } 2156 2157 fn applySgr(style: *Grid.Style, params: []const u8) void { 2158 var nums: [16]u32 = undefined; 2159 var n: usize = 0; 2160 var it = std.mem.splitScalar(u8, params, ';'); 2161 while (it.next()) |tok| { 2162 if (n >= nums.len) break; 2163 // an empty parameter (e.g. bare "\x1b[m") means 0 2164 nums[n] = std.fmt.parseInt(u32, tok, 10) catch 0; 2165 n += 1; 2166 } 2167 if (n == 0) { 2168 style.* = .{}; 2169 return; 2170 } 2171 var i: usize = 0; 2172 while (i < n) : (i += 1) { 2173 switch (nums[i]) { 2174 0 => style.* = .{}, 2175 7 => style.inverted = true, 2176 27 => style.inverted = false, 2177 39 => style.fg = null, 2178 49 => style.bg = null, 2179 38, 48 => { 2180 // truecolor form: 38;2;r;g;b — anything else is ignored 2181 if (i + 4 < n and nums[i + 1] == 2) { 2182 const c = Grid.Color{ 2183 .r = @truncate(nums[i + 2]), 2184 .g = @truncate(nums[i + 3]), 2185 .b = @truncate(nums[i + 4]), 2186 }; 2187 if (nums[i] == 38) style.fg = c else style.bg = c; 2188 i += 4; 2189 } 2190 }, 2191 else => {}, 2192 } 2193 } 2194 } 2195 }; 2196 2197 // a full-screen wrapper that renders ANSI art behind whatever page it wraps 2198 pub const AnsiBackground = struct { 2199 grid: ?Grid, 2200 child: *Widget, 2201 art: AnsiArt, 2202 session: *Session, 2203 2204 pub fn init(allocator: std.mem.Allocator, child_widget: Widget, art_content: []const u8, session: *Session) !AnsiBackground { 2205 var cw = child_widget; 2206 const child = allocator.create(Widget) catch |e| { 2207 cw.deinit(allocator); 2208 return e; 2209 }; 2210 child.* = cw; 2211 errdefer { 2212 child.deinit(allocator); 2213 allocator.destroy(child); 2214 } 2215 return .{ .grid = null, .child = child, .art = try AnsiArt.init(allocator, art_content), .session = session }; 2216 } 2217 2218 pub fn deinit(self: *AnsiBackground, allocator: std.mem.Allocator) void { 2219 if (self.grid) |*grid| grid.deinit(); 2220 self.art.deinit(allocator); 2221 self.child.deinit(allocator); 2222 allocator.destroy(self.child); 2223 } 2224 2225 pub fn build(self: *AnsiBackground, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 2226 self.clearGrid(); 2227 2228 // make the wrapped page fill the whole available area 2229 try self.child.build(allocator, .{ 2230 .min_size = .{ 2231 .width = constraint.max_size.width orelse constraint.min_size.width, 2232 .height = constraint.max_size.height orelse constraint.min_size.height, 2233 }, 2234 .max_size = constraint.max_size, 2235 }, root_focus); 2236 2237 if (self.session.data.enable_ansi) { 2238 if (self.child.getGrid()) |fg| { 2239 self.grid = try artBehind(allocator, fg, &self.art, .top_right, root_focus); 2240 } 2241 } 2242 } 2243 2244 pub fn input(self: *AnsiBackground, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 2245 try self.child.input(allocator, key, root_focus); 2246 } 2247 2248 pub fn clearGrid(self: *AnsiBackground) void { 2249 if (self.grid) |*grid| { 2250 grid.deinit(); 2251 self.grid = null; 2252 } 2253 self.child.clearGrid(); 2254 self.art.clearGrid(); 2255 } 2256 2257 pub fn getGrid(self: AnsiBackground) ?Grid { 2258 return self.grid orelse self.child.getGrid(); 2259 } 2260 2261 pub fn getFocus(self: *AnsiBackground) *Focus { 2262 return self.child.getFocus(); 2263 } 2264 2265 // which top corner the art hugs. 2266 const ArtAnchor = enum { top_left, top_right }; 2267 2268 // a foreground cell counts as blank if it's empty or a bare space without styling 2269 fn cellIsBlank(cell: Grid.Cell) bool { 2270 if (cell.rune) |rune| { 2271 return std.mem.eql(u8, rune, " ") and 2272 cell.style.fg == null and cell.style.bg == null and !cell.style.inverted; 2273 } 2274 return true; 2275 } 2276 2277 // the art is dimmed to this fraction of its brightness so foreground text 2278 // stays legible over it 2279 const art_brightness = 45; // percent 2280 2281 fn dimColor(color: ?Grid.Color) ?Grid.Color { 2282 const c = color orelse return null; 2283 return .{ 2284 .r = @intCast(@as(u16, c.r) * art_brightness / 100), 2285 .g = @intCast(@as(u16, c.g) * art_brightness / 100), 2286 .b = @intCast(@as(u16, c.b) * art_brightness / 100), 2287 }; 2288 } 2289 2290 // terminals that don't support truecolor misparse a "38;2;r;g;b"/"48;2;…" 2291 // SGR as a list of plain SGR codes, so any channel value in 1..9 turns on 2292 // a text attribute (5/6 = blink, 7 = inverse, 8 = conceal, …). 2293 // snap such channels clear of that range so the backdrop doesn't blink or 2294 // hide text there; the ≤9/255 shift is imperceptible on terminals that 2295 // actually render truecolor. 2296 fn sgrSafe(color: ?Grid.Color) ?Grid.Color { 2297 const c = color orelse return null; 2298 const snap = struct { 2299 fn f(v: u8) u8 { 2300 return if (v >= 1 and v <= 9) 10 else v; 2301 } 2302 }.f; 2303 return .{ .r = snap(c.r), .g = snap(c.g), .b = snap(c.b) }; 2304 } 2305 2306 // composites ANSI art behind a foreground grid 2307 fn artBehind(allocator: std.mem.Allocator, foreground: Grid, art: *AnsiArt, anchor: ArtAnchor, root_focus: *Focus) !Grid { 2308 art.clearGrid(); 2309 try art.build(allocator, .{ 2310 .min_size = .{ .width = null, .height = null }, 2311 .max_size = .{ .width = foreground.size.width, .height = foreground.size.height }, 2312 }, root_focus); 2313 2314 var out = try Grid.initFromGrid(allocator, foreground, foreground.size, 0, 0); 2315 errdefer out.deinit(); 2316 2317 if (art.getGrid()) |art_grid| { 2318 const anchor_x = switch (anchor) { 2319 .top_left => 0, 2320 .top_right => foreground.size.width -| art_grid.size.width, 2321 }; 2322 for (0..art_grid.size.height) |y| { 2323 for (0..art_grid.size.width) |x| { 2324 const src = art_grid.cells.items[try art_grid.cells.at(.{ y, x })]; 2325 if (src.rune == null) continue; 2326 const idx = out.cells.at(.{ y, anchor_x + x }) catch continue; 2327 const dst = &out.cells.items[idx]; 2328 // composite the dimmed art behind every cell so it shows 2329 // through the whole UI: a blank cell becomes the art, while a 2330 // cell with a glyph keeps the glyph but takes the dimmed art as 2331 // its background (replacing whatever background it had, which 2332 // would otherwise obscure the art). 2333 if (cellIsBlank(dst.*)) { 2334 dst.* = src; 2335 dst.style.fg = sgrSafe(dimColor(dst.style.fg)); 2336 dst.style.bg = sgrSafe(dimColor(dst.style.bg)); 2337 } else { 2338 dst.style.bg = sgrSafe(dimColor(src.style.bg orelse src.style.fg)); 2339 } 2340 } 2341 } 2342 } 2343 return out; 2344 } 2345 }; 2346