fixup! ✨(frontend) add keyboard navigation for subdocs with focus activation

Author: Ovgodd

src/frontend/apps/impress/src/features/docs/doc-tree/hooks/useDropdownKeyboardNav.ts

@@ -1,6 +1,8 @@
+// src/features/docs/doc-tree/hooks/useDropdownKeyboardNav.ts
+import { DropdownMenuOption } from '@gouvfr-lasuite/ui-kit';
 import { RefObject, useEffect } from 'react';
 
-import { DropdownMenuOption } from '../DropdownMenu';
+import { useKeyboardActivation } from './useKeyboardActivation';
 
 type UseDropdownKeyboardNavProps = {
   isOpen: boolean;
@@ -19,64 +21,65 @@ export const useDropdownKeyboardNav = ({
   setFocusedIndex,
   onOpenChange,
 }: UseDropdownKeyboardNavProps) => {
+  useKeyboardActivation(['Enter', ' '], isOpen, () => {
+    if (focusedIndex === -1) {
+      return;
+    }
+
+    const enabledIndices = options
+      .map((opt, i) => (opt.show !== false && !opt.disabled ? i : -1))
+      .filter((i) => i !== -1);
+
+    const selectedOpt = options[enabledIndices[focusedIndex]];
+    if (selectedOpt?.callback) {
+      onOpenChange(false);
+      void selectedOpt.callback();
+    }
+  });
+
   useEffect(() => {
     const handleKeyDown = (event: KeyboardEvent) => {
       if (!isOpen) {
         return;
       }
 
       const enabledIndices = options
-        .map((option, index) =>
-          option.show !== false && !option.disabled ? index : -1,
-        )
-        .filter((index) => index !== -1);
+        .map((opt, i) => (opt.show !== false && !opt.disabled ? i : -1))
+        .filter((i) => i !== -1);
 
       switch (event.key) {
-        case 'ArrowDown':
+        case 'ArrowDown': {
           event.preventDefault();
           const nextIndex =
             focusedIndex < enabledIndices.length - 1 ? focusedIndex + 1 : 0;
-          const nextEnabledIndex = enabledIndices[nextIndex];
+          const nextEnabled = enabledIndices[nextIndex];
           setFocusedIndex(nextIndex);
-          menuItemRefs.current[nextEnabledIndex]?.focus();
+          menuItemRefs.current[nextEnabled]?.focus();
           break;
+        }
 
-        case 'ArrowUp':
+        case 'ArrowUp': {
           event.preventDefault();
           const prevIndex =
             focusedIndex > 0 ? focusedIndex - 1 : enabledIndices.length - 1;
-          const prevEnabledIndex = enabledIndices[prevIndex];
+          const prevEnabled = enabledIndices[prevIndex];
           setFocusedIndex(prevIndex);
-          menuItemRefs.current[prevEnabledIndex]?.focus();
+          menuItemRefs.current[prevEnabled]?.focus();
           break;
+        }
 
-        case 'Enter':
-        case ' ':
-          event.preventDefault();
-          if (focusedIndex >= 0 && focusedIndex < enabledIndices.length) {
-            const selectedOptionIndex = enabledIndices[focusedIndex];
-            const selectedOption = options[selectedOptionIndex];
-            if (selectedOption && selectedOption.callback) {
-              onOpenChange(false);
-              void selectedOption.callback();
-            }
-          }
-          break;
-
-        case 'Escape':
+        case 'Escape': {
           event.preventDefault();
           onOpenChange(false);
           break;
+        }
       }
     };
 
     if (isOpen) {
       document.addEventListener('keydown', handleKeyDown);
     }
-
-    return () => {
-      document.removeEventListener('keydown', handleKeyDown);
-    };
+    return () => document.removeEventListener('keydown', handleKeyDown);
   }, [
     isOpen,
     focusedIndex,

src/frontend/apps/impress/src/features/docs/doc-tree/hooks/useKeyboardActivation.tsx

@@ -0,0 +1,24 @@
+import { useEffect } from 'react';
+
+export const useKeyboardActivation = (
+  keys: string[],
+  enabled: boolean,
+  action: () => void,
+  capture = false,
+) => {
+  useEffect(() => {
+    if (!enabled) {
+      return;
+    }
+
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (keys.includes(e.key)) {
+        e.preventDefault();
+        action();
+      }
+    };
+
+    document.addEventListener('keydown', onKeyDown, capture);
+    return () => document.removeEventListener('keydown', onKeyDown, capture);
+  }, [keys, enabled, action, capture]);
+};

src/frontend/apps/impress/src/features/docs/doc-tree/hooks/useTreeItemKeyboardActivate.tsx

@@ -1,26 +1,8 @@
-import { useEffect } from 'react';
+import { useKeyboardActivation } from './useKeyboardActivation';
 
-/**
- * While the node has keyboard focus, run `activate()` on Enter / Space.
- * Gives tree-items the same "open on Enter" behaviour that clicks already have.
- */
 export const useTreeItemKeyboardActivate = (
   focused: boolean,
   activate: () => void,
 ) => {
-  useEffect(() => {
-    if (!focused) {
-      return;
-    }
-
-    const onKeyDown = (e: KeyboardEvent) => {
-      if (e.key === 'Enter' || e.key === ' ') {
-        e.preventDefault();
-        activate();
-      }
-    };
-
-    document.addEventListener('keydown', onKeyDown, true);
-    return () => document.removeEventListener('keydown', onKeyDown, true);
-  }, [focused, activate]);
+  useKeyboardActivation(['Enter', ' '], focused, activate, true);
 };