Bugfix: Sync View menu Full/Brief state when switching panes

- Added `sync_view_mode_menu` Tauri command that updates menu checkmarks without emitting events
- Called on pane focus change (`handleFocus`, `switchPane`) and on init
- Extracted shared `sync_view_mode_menu_impl` to avoid duplication with `set_view_mode`

Author: vdavid

apps/desktop/src-tauri/src/commands/ui.rs

@@ -66,6 +66,23 @@ pub fn toggle_hidden_files<R: Runtime>(app: AppHandle<R>) -> Result<bool, String
 /// This is used by the command palette to sync with menu state.
 #[tauri::command]
 pub fn set_view_mode<R: Runtime>(app: AppHandle<R>, mode: String) -> Result<(), String> {
+    sync_view_mode_menu_impl::<R>(&app, &mode)?;
+
+    // Emit event to frontend
+    app.emit("view-mode-changed", serde_json::json!({ "mode": mode }))
+        .map_err(|e| e.to_string())?;
+
+    Ok(())
+}
+
+/// Sync the View menu checkmarks to match the given mode, without emitting any event.
+/// Called when the focused pane changes so the menu reflects the active pane's view mode.
+#[tauri::command]
+pub fn sync_view_mode_menu<R: Runtime>(app: AppHandle<R>, mode: String) -> Result<(), String> {
+    sync_view_mode_menu_impl::<R>(&app, &mode)
+}
+
+fn sync_view_mode_menu_impl<R: Runtime>(app: &AppHandle<R>, mode: &str) -> Result<(), String> {
     let menu_state = app.state::<MenuState<R>>();
     let full_guard = menu_state.view_mode_full.lock_ignore_poison();
     let brief_guard = menu_state.view_mode_brief.lock_ignore_poison();
@@ -74,15 +91,10 @@ pub fn set_view_mode<R: Runtime>(app: AppHandle<R>, mode: String) -> Result<(),
         return Err("Menu not initialized".to_string());
     };
 
-    // Set the correct check state (radio behavior)
     let is_full = mode == "full";
     full_item.set_checked(is_full).map_err(|e| e.to_string())?;
     brief_item.set_checked(!is_full).map_err(|e| e.to_string())?;
 
-    // Emit event to frontend
-    app.emit("view-mode-changed", serde_json::json!({ "mode": mode }))
-        .map_err(|e| e.to_string())?;
-
     Ok(())
 }
 

apps/desktop/src-tauri/src/lib.rs

@@ -712,6 +712,7 @@ pub fn run() {
             commands::ui::set_menu_context,
             commands::ui::toggle_hidden_files,
             commands::ui::set_view_mode,
+            commands::ui::sync_view_mode_menu,
             commands::ui::show_in_finder,
             commands::ui::copy_to_clipboard,
             commands::ui::quick_look,

apps/desktop/src/lib/file-explorer/pane/DualPaneExplorer.svelte

@@ -31,6 +31,7 @@
         cutFilesToClipboard,
         readClipboardFiles,
         clearClipboardCutState,
+        syncViewModeMenu,
     } from '$lib/tauri-commands'
     import type {
         VolumeInfo,
@@ -588,6 +589,7 @@
             saveAppStatus({ focusedPane: pane })
             void updateFocusedPane(pane)
             syncPinTabMenu()
+            void syncViewModeMenu(getPaneViewMode(pane))
         }
         // Always restore DOM focus (needed after inline rename or dialog close within a pane)
         containerElement?.focus()
@@ -1080,6 +1082,7 @@
 
         initialized = true
         syncPinTabMenu()
+        void syncViewModeMenu(getPaneViewMode(focusedPane))
 
         // Sync initial tab state to MCP backend
         syncTabsToBackend()
@@ -1680,6 +1683,7 @@
         focusedPane = newFocus
         saveAppStatus({ focusedPane: newFocus })
         void updateFocusedPane(newFocus)
+        void syncViewModeMenu(getPaneViewMode(newFocus))
         containerElement?.focus()
     }
 

apps/desktop/src/lib/tauri-commands/app-state.ts

@@ -131,6 +131,14 @@ export async function setViewMode(mode: 'full' | 'brief'): Promise<void> {
   await invoke('set_view_mode', { mode })
 }
 
+/**
+ * Sync the View menu checkmarks to match the given mode, without emitting events.
+ * Used when the focused pane changes so the menu reflects the active pane's view mode.
+ */
+export async function syncViewModeMenu(mode: 'full' | 'brief'): Promise<void> {
+  await invoke('sync_view_mode_menu', { mode })
+}
+
 // ============================================================================
 // Window lifecycle
 // ============================================================================

apps/desktop/src/lib/tauri-commands/index.ts

@@ -77,6 +77,7 @@ export {
   setMenuContext,
   toggleHiddenFiles,
   setViewMode,
+  syncViewModeMenu,
   showMainWindow,
   updatePinTabMenu,
 } from './app-state'