tui-editor

Overview ¶

tui-editor is the reference loom-style interactive demo for tui.App: a modal (vi-inspired) text editor built on top of the existing toolkit widgets — TextView for the buffer, Statusbar for the mode + cursor + filename indicator, MenuBar for the chrome, and a Popover-wrapped SearchEntry for the command palette.

Modes:

• View — read-only. Keys drive actions: 'i' → Edit, 'q' / Ctrl+C → Quit, Ctrl+S → save, Ctrl+P → Palette. Every printable key is consumed so nothing leaks into the buffer.
• Edit — every key falls through to TextView.OnEvent, so arrow keys move the cursor, Backspace deletes, and printable characters insert. Escape returns to View. Ctrl+S saves (consumed, does not insert Ctrl+S into the buffer).
• Palette — keys forward to a SearchEntry inside a Popover. Enter runs the typed command ("save", "quit"); Escape returns to View.

Run with:

go run . --file=path/to/file.txt
go run . --theme=dark

The demo saves via os.WriteFile (writeFile seam so tests substitute a no-op) and loads via os.ReadFile (readFile seam). Both are unset when --file is empty; the editor starts on an in-memory buffer.