feat: close MainMenu and Library dropdown on item select (#6152)

src/components/dropdownMenu/DropdownMenuContent.tsx

@@ -4,16 +4,23 @@ import { Island } from "../Island";
 import { useDevice } from "../App";
 import clsx from "clsx";
 import Stack from "../Stack";
+import React from "react";
+import { DropdownMenuContentPropsContext } from "./common";
 
 const MenuContent = ({
   children,
   onClickOutside,
   className = "",
+  onSelect,
   style,
 }: {
   children?: React.ReactNode;
   onClickOutside?: () => void;
   className?: string;
+  /**
+   * Called when any menu item is selected (clicked on).
+   */
+  onSelect?: (event: Event) => void;
   style?: React.CSSProperties;
 }) => {
   const device = useDevice();
@@ -24,28 +31,32 @@ const MenuContent = ({
   const classNames = clsx(`dropdown-menu ${className}`, {
     "dropdown-menu--mobile": device.isMobile,
   }).trim();
+
   return (
-    <div
-      ref={menuRef}
-      className={classNames}
-      style={style}
-      data-testid="dropdown-menu"
-    >
-      {/* the zIndex ensures this menu has higher stacking order,
+    <DropdownMenuContentPropsContext.Provider value={{ onSelect }}>
+      <div
+        ref={menuRef}
+        className={classNames}
+        style={style}
+        data-testid="dropdown-menu"
+      >
+        {/* the zIndex ensures this menu has higher stacking order,
     see https://github.com/excalidraw/excalidraw/pull/1445 */}
-      {device.isMobile ? (
-        <Stack.Col className="dropdown-menu-container">{children}</Stack.Col>
-      ) : (
-        <Island
-          className="dropdown-menu-container"
-          padding={2}
-          style={{ zIndex: 1 }}
-        >
-          {children}
-        </Island>
-      )}
-    </div>
+        {device.isMobile ? (
+          <Stack.Col className="dropdown-menu-container">{children}</Stack.Col>
+        ) : (
+          <Island
+            className="dropdown-menu-container"
+            padding={2}
+            style={{ zIndex: 1 }}
+          >
+            {children}
+          </Island>
+        )}
+      </div>
+    </DropdownMenuContentPropsContext.Provider>
   );
 };
-export default MenuContent;
 MenuContent.displayName = "DropdownMenuContent";
+
+export default MenuContent;