macos: drop the CapturePane / EmulationPane enums

Now that we always route Reenable clicks to the Accessibility pane on
macOS 13+ (AX transitively covers Input Monitoring listen-only and
Post Event, and the bundle isn't listed in the separate panes anyway),
the CapturePane / EmulationPane enums and their non-Accessibility
variants are dead weight. Remove them along with:

- `missing_capture_pane` / `missing_emulation_pane`
- `open_input_monitoring_settings` / `open_post_event_settings`
- `input_monitoring_granted` / `post_event_granted` preflight wrappers
- the `CGPreflightListenEventAccess` / `CGPreflightPostEventAccess`
  FFI declarations in lan-mouse-gtk (the daemon crates keep their own)

`handle_capture` / `handle_emulation` collapse to a single helper that
opens the Accessibility pane if AX is missing, otherwise just retries.
`ensure_listed_in_input_monitoring` is kept because it still has a
side effect on macOS 13/14, where Input Monitoring is a separately-
granted category.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lan-mouse-gtk/src/macos_privacy.rs

@@ -2,10 +2,12 @@
 
 //! Tiny macOS Privacy-pane helpers used by the GUI.
 //!
-//! Clicking "Reenable" on the capture/emulation warning row should take the
-//! user to whichever Privacy pane is actually missing a grant — opening the
-//! Accessibility pane when the user has already granted Accessibility (and
-//! only needs Input Monitoring) is confusing and hides the real request.
+//! On macOS 13+, the Accessibility grant transitively confers the
+//! listen-only event-tap privilege that Input Monitoring gates and the
+//! synthesize-event privilege that Post Event gates, and the bundle
+//! typically isn't even listed in those separate panes. So the single
+//! user-facing action for any missing-capture or missing-emulation
+//! scenario is "re-toggle Accessibility" — we don't route elsewhere.
 
 use std::ffi::{c_uchar, c_void};
 use std::process::Command;
@@ -48,9 +50,7 @@ extern "C" {
 
 #[link(name = "CoreGraphics", kind = "framework")]
 extern "C" {
-    fn CGPreflightListenEventAccess() -> c_uchar;
     fn CGRequestListenEventAccess() -> c_uchar;
-    fn CGPreflightPostEventAccess() -> c_uchar;
     fn CGRequestPostEventAccess() -> c_uchar;
 
     // CFMachPortRef CGEventTapCreate(
@@ -73,67 +73,6 @@ pub fn accessibility_granted() -> bool {
     raw != 0
 }
 
-pub fn input_monitoring_granted() -> bool {
-    let raw = unsafe { CGPreflightListenEventAccess() };
-    log::debug!("CGPreflightListenEventAccess() = {raw}");
-    raw != 0
-}
-
-pub fn post_event_granted() -> bool {
-    let raw = unsafe { CGPreflightPostEventAccess() };
-    log::debug!("CGPreflightPostEventAccess() = {raw}");
-    raw != 0
-}
-
-// Variants `InputMonitoring` and `PostEvent` are currently never returned
-// by `missing_capture_pane` / `missing_emulation_pane` — on macOS 13+ those
-// categories auto-grant via Accessibility and the bundle typically isn't
-// listed in those separate panes, so routing users there is a dead end.
-// Kept in the enum so older-macOS behavior can be restored without a
-// structural change.
-#[allow(dead_code)]
-pub enum CapturePane {
-    Accessibility,
-    InputMonitoring,
-    /// Everything is already granted; the caller should just retry.
-    None,
-}
-
-#[allow(dead_code)]
-pub enum EmulationPane {
-    Accessibility,
-    PostEvent,
-    None,
-}
-
-pub fn missing_capture_pane() -> CapturePane {
-    if !accessibility_granted() {
-        CapturePane::Accessibility
-    } else if !input_monitoring_granted() {
-        // On macOS 13+, Accessibility trust confers the listen-only
-        // event-tap privilege that Input Monitoring gates, and on Sequoia
-        // the bundle typically isn't listed in the Input Monitoring pane
-        // at all. The actionable fix when IM preflight is still 0 is to
-        // re-toggle Accessibility, so send the user there rather than to
-        // an empty IM list.
-        CapturePane::Accessibility
-    } else {
-        CapturePane::None
-    }
-}
-
-pub fn missing_emulation_pane() -> EmulationPane {
-    if !accessibility_granted() {
-        EmulationPane::Accessibility
-    } else if !post_event_granted() {
-        // Post Event is nested under Accessibility on modern macOS and
-        // auto-grants alongside it. Point the user back to Accessibility
-        // for the same reason as the capture case above.
-        EmulationPane::Accessibility
-    } else {
-        EmulationPane::None
-    }
-}
 
 /// Poll for an Accessibility grant transition. Starts a 1-second GLib
 /// timer that fires `on_granted` once, the first time
@@ -165,20 +104,6 @@ pub fn open_accessibility_settings() {
     open_url("x-apple.systempreferences:com.apple.preference.security?Privacy_Accessibility");
 }
 
-pub fn open_input_monitoring_settings() {
-    unsafe {
-        ensure_listed_in_input_monitoring();
-    }
-    open_url("x-apple.systempreferences:com.apple.preference.security?Privacy_ListenEvent");
-}
-
-pub fn open_post_event_settings() {
-    unsafe {
-        CGRequestPostEventAccess();
-    }
-    open_url("x-apple.systempreferences:com.apple.preference.security?Privacy_PostEvent");
-}
-
 /// Make sure the app appears in System Settings → Privacy → Input Monitoring.
 ///
 /// `CGRequestListenEventAccess()` is *supposed* to register the app in the

lan-mouse-gtk/src/window/imp.rs

@@ -10,6 +10,16 @@ use lan_mouse_ipc::{DEFAULT_PORT, FrontendRequestWriter};
 
 use crate::authorization_window::AuthorizationWindow;
 
+#[cfg(target_os = "macos")]
+fn open_accessibility_if_missing(ctx: &str) {
+    if crate::macos_privacy::accessibility_granted() {
+        log::info!("{ctx}: Accessibility already granted, retry only");
+    } else {
+        log::info!("{ctx}: opening Accessibility pane");
+        crate::macos_privacy::open_accessibility_settings();
+    }
+}
+
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/window.ui")]
 pub struct Window {
@@ -143,44 +153,14 @@ impl Window {
     #[template_callback]
     fn handle_emulation(&self) {
         #[cfg(target_os = "macos")]
-        {
-            use crate::macos_privacy::{self, EmulationPane};
-            match macos_privacy::missing_emulation_pane() {
-                EmulationPane::Accessibility => {
-                    log::info!("Reenable emulation: opening Accessibility pane");
-                    macos_privacy::open_accessibility_settings();
-                }
-                EmulationPane::PostEvent => {
-                    log::info!("Reenable emulation: opening Post Event pane");
-                    macos_privacy::open_post_event_settings();
-                }
-                EmulationPane::None => {
-                    log::info!("Reenable emulation: both grants present, retry only");
-                }
-            }
-        }
+        open_accessibility_if_missing("Reenable emulation");
         self.obj().request_emulation();
     }
 
     #[template_callback]
     fn handle_capture(&self) {
         #[cfg(target_os = "macos")]
-        {
-            use crate::macos_privacy::{self, CapturePane};
-            match macos_privacy::missing_capture_pane() {
-                CapturePane::Accessibility => {
-                    log::info!("Reenable capture: opening Accessibility pane");
-                    macos_privacy::open_accessibility_settings();
-                }
-                CapturePane::InputMonitoring => {
-                    log::info!("Reenable capture: opening Input Monitoring pane");
-                    macos_privacy::open_input_monitoring_settings();
-                }
-                CapturePane::None => {
-                    log::info!("Reenable capture: both grants present, retry only");
-                }
-            }
-        }
+        open_accessibility_if_missing("Reenable capture");
         self.obj().request_capture();
     }