Text Editor in Rust egui — Open, Save & File Dialogs | Learn egui Ep32

Build a text editor with file dialogs in Rust using egui! In this episode, we create a text editor with the rfd crate for native file dialogs, FileDialog::new() with add_filter for file type filtering, pick_file and save_file for open/save operations, std::fs::read_to_string and fs::write for file I/O, Option to track the current file, TextEdit::multiline with monospace font, a toolbar with New/Open/Save/Save As buttons, and a status bar with character count. Student code: https://github.com/GoCelesteAI/egui_text_editor What You'll Learn: - rfd crate for native file dialogs (open, save) - rfd::FileDialog::new() to create a file dialog builder - .add_filter("Text", &["txt", "rs", "md", "toml"]) for file type filtering - .pick_file() to open a native file picker dialog - .save_file() to open a native save dialog - std::fs::read_to_string() to read file contents into a String - std::fs::write() to write String content to a file - PathBuf for owned file system paths - Option to track whether a file is open - TextEdit::multiline() for a multi-line text editing area - .font(TextStyle::Monospace) for monospace editor font - ScrollArea::vertical() for scrollable content - TopBottomPanel for toolbar and status bar - Layout::right_to_left() for right-aligned character count - Save delegates to Save As when no file path exists - Neo-tree file browsing in a Rust project This is Episode 32 of the "Learn egui in Neovim" series — 36 episodes teaching Rust GUI development with egui, all coded in Neovim with Neo-tree. Chapters: 0:00 Intro 0:12 What We're Building 0:22 Preview: Key Concepts 0:54 Create Project & Dependencies 1:30 main.rs — Window Setup 2:10 app.rs — MyApp Struct & State 2:50 Default Implementation 3:20 open_file — FileDialog & read_to_string 4:20 save_file — Write to Current Path 5:00 save_file_as — FileDialog Save 5:40 new_file — Clear Content & Path 6:00 update() — Toolbar Panel with Buttons 7:00 Status Bar — File Status & Char Count 7:40 CentralPanel — TextEdit::multiline 8:20 Save & Review Code 8:50 cargo build 9:20 Neo-tree Browse 9:50 App Demo 10:50 Recap 11:30 Next Episode Tags: rust, egui, text editor, gui, tutorial, neovim, neo-tree, eframe, rfd, file dialog, open file, save file, pathbuf, textedit, multiline, monospace, toolbar, status bar, file io, coding, programming, learn rust, rust gui, desktop app Hashtags: #rust #egui #texteditor #gui #neovim #rustlang #coding #tutorial