TextEditor

TextEditor is a small MoonBit terminal editor demo that exercises the published TerminalEvent, LunarEvent, and LunarTUI packages together.

It is intentionally minimal: the goal is to validate the event pipeline, widget event handling, redraw behavior, and file saving path after the projects are consumed from mooncake instead of a local moon.work workspace.

Screenshots

Typing text in the editor:

Saving the buffer to disk:

Dependency Chain

TerminalEvent C++ core
  -> TerminalEvent C FFI
  -> LunarEvent MoonBit event API
  -> LunarEvent/lunartui adapter
  -> LunarTUI widget event handling
  -> TextEditor redraw loop

The repository has no moon.work; dependencies are resolved from mooncake:

import {
  "FrozenLemonTee/LunarEvent@0.1.0",
  "FrozenLemonTee/LunarTUI@0.0.2",
  "moonbitlang/x@0.4.40",
}

Run

moon update
moon run cmd/main

The demo is designed for a POSIX terminal. On Windows, the current TerminalEvent backend may report raw mode as unavailable unless the program is run in a compatible POSIX terminal environment such as WSL.

Controls

• Type text to insert characters at the cursor.
• Arrow keys move the cursor.
• Backspace edits text.
• Tab inserts two spaces.
• Enter inserts a new line.
• Ctrl+S saves the buffer to terminal-event-demo.txt.
• q or Esc exits and restores the terminal.

Test

moon test cmd/main --target native

The tests cover line serialization and file saving.

Related Projects

• TerminalEvent
• LunarEvent
• LunarTUI