From 176898f8437c97be3c0fe526befac9c3133a9ba4 Mon Sep 17 00:00:00 2001
From: garopoulos <garopoulos@arx.net>
Date: Thu, 19 Mar 2026 17:01:08 +0200
Subject: [PATCH] Fix weird issue with not update when deleting

---
 CLAUDE.md                     | 54 +++++++++++++++++++++++++++++++++++
 ly-ui/src/components/Text.zig |  3 ++
 2 files changed, 57 insertions(+)
 create mode 100644 CLAUDE.md

diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..511f887
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,54 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Ly is a lightweight TUI display manager for Linux and BSD, written in Zig 0.15.x. It provides a terminal-based login screen supporting X11 and Wayland sessions, with no systemd dependency. It uses PAM for authentication and termbox2 for terminal rendering.
+
+## Build Commands
+
+```bash
+zig build                    # Compile
+zig build run                # Run in terminal emulator (testing only, auth won't work outside a real TTY)
+zig build -Dinit_system=systemd   # Build targeting a specific init system
+zig build installexe         # Install binary + config
+zig build installnoconf      # Update binary without overwriting config
+zig build uninstallexe       # Uninstall
+```
+
+Build options: `-Dconfig_directory=`, `-Dprefix_directory=`, `-Dname=`, `-Denable_x11_support=`, `-Ddefault_tty=`.
+
+There are no test or lint commands configured.
+
+## Dependencies
+
+- **Build:** Zig 0.15.x, libc, libpam (libpam0g-dev), libxcb (libxcb-xkb-dev, optional)
+- **Zig packages** (in build.zig.zon): clap (CLI args), zigini (INI parsing), termbox2 (terminal rendering), ly_core (local shared library)
+
+## Architecture
+
+**Main loop** (`src/main.zig`): `UiState` struct owns all UI state. The event loop is termbox2-based with timeout support for animations. Authentication triggers PAM, then forks a child process for the user session.
+
+**Widget system** (`src/tui/Widget.zig`): Type-erased vtable polymorphism. Each widget implements `deinit`, `realloc`, `draw`, `update`, `handle`, `calculate_timeout`. Widgets are registered with `TerminalBuffer` which dispatches events and manages drawing.
+
+**TerminalBuffer** (`src/tui/TerminalBuffer.zig`): Wraps termbox2. Manages widget registration, event dispatch, keybinding callbacks, and terminal styling.
+
+**UI components** (`src/tui/components/`): Text input, labels, big ASCII labels, user list dropdown, session selector, centered dialog box, info/status line.
+
+**Config** (`src/config/Config.zig`): ~100 options parsed from INI file (`/etc/ly/config.ini`). The template is at `res/config.ini`.
+
+**Authentication** (`src/auth.zig`): PAM integration with X11 xauth handling, environment setup, and session process forking.
+
+**Animations** (`src/animations/`): Doom fire, Matrix, ColorMix, Game of Life, Cascade, DUR file format. Each is a separate widget.
+
+**C FFI** (`ly-core/src/interop.zig`): Bindings for PAM, utmpx, XCB, pwd/grp, TTY/VT management. Platform-specific code for Linux vs FreeBSD.
+
+**Localization** (`res/lang/`): 20+ language files. Language strings loaded via `src/config/Lang.zig`.
+
+## Key Patterns
+
+- Zig's comptime features are used extensively in Config.zig for field iteration and INI parsing.
+- The widget vtable pattern uses `@fieldParentPtr` for type erasure — understand this before modifying widget code.
+- Platform differences (Linux vs FreeBSD) are handled via comptime `@import("builtin").os.tag` checks, primarily in interop.zig and auth.zig.
+- Init system support is compile-time selected, with service files in `res/` for each system (systemd, openrc, runit, s6, dinit, sysvinit, freebsd).
diff --git a/ly-ui/src/components/Text.zig b/ly-ui/src/components/Text.zig
index 0ad2128..8565664 100644
--- a/ly-ui/src/components/Text.zig
+++ b/ly-ui/src/components/Text.zig
@@ -187,6 +187,7 @@ fn goLeft(ptr: *anyopaque) !bool {
     if (self.visible_start > 0) self.visible_start -= 1;
 
     self.cursor -= 1;
+    self.buffer.drawNextFrame(true);
     return false;
 }
 
@@ -197,6 +198,7 @@ fn goRight(ptr: *anyopaque) !bool {
     if (self.cursor - self.visible_start == self.width - 1) self.visible_start += 1;
 
     self.cursor += 1;
+    self.buffer.drawNextFrame(true);
     return false;
 }
 
@@ -208,6 +210,7 @@ fn delete(ptr: *anyopaque) !bool {
     _ = self.text.orderedRemove(self.cursor);
 
     self.end -= 1;
+    self.buffer.drawNextFrame(true);
     return false;
 }