Lumacs/DEV_STATE.md

DEV_STATE.md - Lumacs Development State

Architecture

    [Lua 5.4 Engine]
         ^  |
         |  v
    [Lua API Bridge] <-- C++ bindings for buffers, windows, keybindings, themes
         ^  |
         |  v
    [Editor Core] <-- Buffer management, kill ring, face system
         ^  |
         |  v
    [UI Interface] <-- Abstract UI layer
         ^  |
         |  v
    [GTK4 Frontend] <-- Primary GUI (with TUI fallback available)
         |
         v
    [Terminal/Display]

Current Module

Phase 12: Enhanced Minibuffer & Command System - Comprehensive command execution, autocompletion, and Lua API integration.

File Manifest

Lumacs/
├── CMakeLists.txt           # Build configuration
├── init.lua                 # Main Lua initialization
├── themes.lua              # Theme definitions
├── include/lumacs/
│   ├── editor_core.hpp     # Core editor logic
│   ├── buffer.hpp          # Text buffer management
│   ├── lua_api.hpp         # C++/Lua bridge
│   ├── gtk_editor.hpp      # GTK4 frontend
│   ├── tui_editor.hpp      # TUI fallback
│   ├── keybinding.hpp      # Key handling
│   ├── theme.hpp           # Theme/face system
│   ├── command_system.hpp  # Command registry & completion engine
│   └── [other headers]
├── src/
│   ├── main.cpp            # Entry point
│   ├── editor_core.cpp     # Core functionality
│   ├── lua_api.cpp         # Lua bindings
│   ├── gtk_editor.cpp      # GTK implementation
│   ├── command_system.cpp  # Command execution & completion
│   └── [other .cpp files]
├── tests/
├── examples/
├── scripts/
└── documentation/

Done

• ✅ Phase 1-5: Complete Emacs-like core functionality
• ✅ Phase 6 Core: GTK4 frontend with text rendering
• ✅ Phase 7 Optimization: Render caching and performance tuning
• ✅ Phase 8 Mouse: Full mouse support (click-move, scroll, drag-select)
• ✅ Phase 9 Advanced UI: Implemented Context Menus (right-click) and Hover Tooltips
• ✅ Input System: Full keyboard input with modifiers working
• ✅ Cursor System: Emacs-style blinking block cursor with color inversion
• ✅ Text Editing: Basic insertion, deletion, movement operations working
• ✅ Keybinding System: Fixed conflicts, C-n, C-p, C-f, C-b, C-a, C-e, C-s, C-k working
• ✅ Clean Exit: Fixed shutdown crashes and memory issues
• ✅ Syntax Highlighting: Face system with Pango rendering
• ✅ Text-Cursor Alignment: Fixed text rendering offset issues
• ✅ Scrolling System: Full vertical and horizontal scrolling with Page Up/Down support
• ✅ Kill Ring System: Complete implementation with push/yank/yank-pop operations
• ✅ Mark & Region: Full mark/region system in Buffer (set_mark, deactivate_mark, get_region)
• ✅ Buffer Management: Complete buffer switching, listing, and management in EditorCore
• ✅ Core Emacs Features: Registers, keyboard macros, rectangles, kill operations
• ✅ GTK Segfault Fix: Resolved double-free on exit with proper cleanup handling
• ✅ GTK Window Splits: Dynamic container layout with Gtk::Paned matching EditorCore's window tree
• ✅ Window Split Crash Fix: Resolved window split crashes and text rendering issues
• ✅ Multi-Window Text Rendering: Fixed text rendering in split windows with proper font metrics
• ✅ Split Window UI Polish: Fixed modeline display, focus stability, and split ratio calculations
• ✅ Window Split Freeze Fix: Resolved GTK signal_realize callback issues causing freezes during splits
• ✅ Split Window Cursor Fix: Fixed cursor movement to work in focused window rather than original active window
• ⚠️ Focus Jumping Partial Fix: Identified spurious next_window() calls but focus still jumps during typing
• ✅ Split Ratio Improvement: Implemented initial split ratio using signal_map with fallback
• ✅ Modeline: Implemented detailed Emacs-like modeline with active/inactive states, flags, percentage, and mode display
• ✅ Minibuffer Polish: Implemented Tab completion (buffers/files), command history (up/down), and kill-buffer logic
• ✅ GTK Text Rendering: Refactored to use Pango::AttrList for correct multi-font and styled text rendering.
• ✅ GTK Cursor: Fixed cursor positioning for variable width fonts using Pango layout metrics.
• ✅ GTK Region: Implemented visual highlighting for selected regions (mark/point).
• ✅ Command System: Implemented comprehensive C++ command registry with fuzzy completion engine
• ✅ Enhanced Minibuffer: Improved command execution with autocompletion and visual feedback
• ✅ Lua Command API: Full Lua integration for command registration, execution, and custom completion providers
• ✅ File System Completion: C++ implementation for file path autocompletion in find-file operations
• ✅ Enhanced Command Set: Rich set of Emacs-like commands including buffer management, text manipulation, and development tools
• ✅ Advanced Theme System: 6 professional themes with minibuffer selection, fuzzy completion, and comprehensive Lua API
• ✅ Theme Management: Full theme switching interface with M-x set-theme, theme cycling, random selection, and auto-theme based on time
• ✅ Popular Theme Collection: Solarized Dark, Nord, Gruvbox Light, Dracula, Everforest Dark, and enhanced Default themes
• ✅ Rich Theme Customization: Extended ThemeElement enum for comprehensive UI theming including minibuffer, status line, and text elements

Todo

1. Advanced Completion UI: Implement popup completion window with descriptions and better visual feedback.

2. Plugin Management: Implement dynamic loading and lifecycle management of Lua plugins.

3. Lua Debugging: Integrate basic debugging support for Lua scripts.

4. Command Aliases: Allow users to define custom command aliases in their configuration.

5. Completion Providers: Add more completion providers (symbols, recently used files, history, etc.).

Technical Debt/Notes

• Lua Bridge: The lua_api.cpp contains the critical C++/Lua boundary code
• GTK Threading: All GTK operations must stay on main thread
• Memory Management: Using RAII and smart pointers throughout C++ code
• Face System: Themes are fully integrated with Pango text rendering
• Cursor Implementation: Blinking timer with 500ms intervals, proper cleanup on exit
• Scrolling Architecture: Viewport system with 3-line vertical and 5-column horizontal margins
• Build System: CMake-based with proper dependency management
• Testing: Unit test framework in place for core components
• Rendering Performance: Rendering cache was temporarily removed during Pango refactor. Monitor performance on large buffers.

Current Focus

Phase 13: Advanced Theme System Complete:

• ✅ Enhanced theme management with minibuffer selection
• ✅ 6 built-in themes (Solarized, Nord, Gruvbox, Dracula, Everforest, Default)
• ✅ Comprehensive theme commands and Lua API
• ✅ Rich UI customization system