refactor: improve context menu performance

- extract menu from rundown tree
- lazy create actions

apps/client/src/common/hooks/useContextMenu.tsx

@@ -1,18 +1,24 @@
-import { MouseEvent } from 'react';
+import { MouseEvent, useCallback } from 'react';
 
 import { useContextMenuStore } from '../../features/rundown/rundown-context-menu/RundownContextMenu';
 import { DropdownMenuOption } from '../components/dropdown-menu/DropdownMenu';
 
-export const useContextMenu = <T extends HTMLElement>(options: DropdownMenuOption[]) => {
+type ContextMenuOptions = () => DropdownMenuOption[];
+
+export const useContextMenu = <T extends HTMLElement>(options: ContextMenuOptions) => {
   const setContextMenu = useContextMenuStore((state) => state.setContextMenu);
 
-  const localCreateContextMenu = (contextMenuEvent: MouseEvent<T, globalThis.MouseEvent>) => {
-    // prevent browser default context menu from showing up
-    contextMenuEvent.preventDefault();
+  const localCreateContextMenu = useCallback(
+    (contextMenuEvent: MouseEvent<T, globalThis.MouseEvent>) => {
+      // prevent browser default context menu from showing up
+      contextMenuEvent.preventDefault();
 
-    const { pageX, pageY } = contextMenuEvent;
-    return setContextMenu({ x: pageX, y: pageY }, options);
-  };
+      const { pageX, pageY } = contextMenuEvent;
+      const menuOptions = options();
+      return setContextMenu({ x: pageX, y: pageY }, menuOptions);
+    },
+    [options, setContextMenu],
+  );
 
   return [localCreateContextMenu];
 };

apps/client/src/features/rundown/RundownExport.tsx

@@ -44,9 +44,8 @@ function RundownExport() {
           <ViewNavigationMenu suppressSettings />
           <div className={style.rundown}>
             <ErrorBoundary>
-              <RundownContextMenu>
-                <RundownWrapper isSmallDevice viewMode={viewMode} setViewMode={setViewMode} />
-              </RundownContextMenu>
+              <RundownWrapper isSmallDevice viewMode={viewMode} setViewMode={setViewMode} />
+              <RundownContextMenu />
             </ErrorBoundary>
           </div>
         </div>
@@ -65,9 +64,8 @@ function RundownExport() {
           <Editor.Panel className={style.list}>
             <ErrorBoundary>
               {!isExtracted && <Editor.CornerExtract onClick={(event) => handleLinks('rundown', event)} />}
-              <RundownContextMenu>
-                <RundownWrapper viewMode={viewMode} setViewMode={setViewMode} />
-              </RundownContextMenu>
+              <RundownWrapper viewMode={viewMode} setViewMode={setViewMode} />
+              <RundownContextMenu />
             </ErrorBoundary>
           </Editor.Panel>
           {!hideSideBar && (

apps/client/src/features/rundown/rundown-context-menu/RundownContextMenu.tsx

@@ -1,4 +1,3 @@
-import type { PropsWithChildren } from 'react';
 import { create } from 'zustand';
 
 import { DropdownMenuOption, PositionedDropdownMenu } from '../../../common/components/dropdown-menu/DropdownMenu';
@@ -24,7 +23,7 @@ export const useContextMenuStore = create<ContextMenuStore>((set) => ({
   setIsOpen: (newIsOpen) => set(() => ({ isOpen: newIsOpen })),
 }));
 
-export function RundownContextMenu({ children }: PropsWithChildren) {
+export function RundownContextMenu() {
   const { position, options, isOpen, setIsOpen } = useContextMenuStore();
 
   const onClose = () => {
@@ -32,13 +31,8 @@ export function RundownContextMenu({ children }: PropsWithChildren) {
   };
 
   if (!isOpen) {
-    return children;
+    return null;
   }
 
-  return (
-    <>
-      {children}
-      <PositionedDropdownMenu isOpen position={position} onClose={onClose} items={options} />
-    </>
-  );
+  return <PositionedDropdownMenu isOpen position={position} onClose={onClose} items={options} />;
 }

apps/client/src/features/rundown/rundown-event/RundownEvent.tsx

@@ -109,7 +109,7 @@ export default function RundownEvent({
   const handleRef = useRef<null | HTMLSpanElement>(null);
   const [isVisible, setIsVisible] = useState(false);
 
-  const [onContextMenu] = useContextMenu<HTMLDivElement>(
+  const [onContextMenu] = useContextMenu<HTMLDivElement>(() =>
     selectedEvents.size > 1
       ? [
           {

apps/client/src/features/rundown/rundown-group/RundownGroup.tsx

@@ -41,7 +41,7 @@ export default function RundownGroup({ data, hasCursor, collapsed, onCollapse }:
   const setSingleEntrySelection = useEventSelection((state) => state.setSingleEntrySelection);
   const selectedEvents = useEventSelection((state) => state.selectedEvents);
 
-  const [onContextMenu] = useContextMenu<HTMLDivElement>([
+  const [onContextMenu] = useContextMenu<HTMLDivElement>(() => [
     {
       type: 'item',
       label: 'Clone Group',

apps/client/src/features/rundown/rundown-milestone/RundownMilestone.tsx

@@ -30,7 +30,7 @@ export default function RundownMilestone({ colour, cue, entryId, hasCursor, titl
   const selectedEvents = useEventSelection((state) => state.selectedEvents);
   const setSingleEntrySelection = useEventSelection((state) => state.setSingleEntrySelection);
 
-  const [onContextMenu] = useContextMenu<HTMLDivElement>([
+  const [onContextMenu] = useContextMenu<HTMLDivElement>(() => [
     {
       type: 'item',
       label: 'Delete',