add small animation to collapsible shadcn elements

web/src/components/ui/collapsible.tsx

@@ -1,9 +1,28 @@
-import * as CollapsiblePrimitive from "@radix-ui/react-collapsible"
+import * as CollapsiblePrimitive from "@radix-ui/react-collapsible";
+import * as React from "react";
 
-const Collapsible = CollapsiblePrimitive.Root
+import { cn } from "@/lib/utils";
 
-const CollapsibleTrigger = CollapsiblePrimitive.CollapsibleTrigger
+const Collapsible = CollapsiblePrimitive.Root;
 
-const CollapsibleContent = CollapsiblePrimitive.CollapsibleContent
+const CollapsibleTrigger = CollapsiblePrimitive.CollapsibleTrigger;
 
-export { Collapsible, CollapsibleTrigger, CollapsibleContent }
+const CollapsibleContent = React.forwardRef<
+  React.ComponentRef<typeof CollapsiblePrimitive.CollapsibleContent>,
+  React.ComponentPropsWithoutRef<typeof CollapsiblePrimitive.CollapsibleContent>
+>(({ className, children, ...props }, ref) => (
+  <CollapsiblePrimitive.CollapsibleContent
+    ref={ref}
+    className={cn(
+      "overflow-hidden data-[state=closed]:animate-collapsible-up data-[state=open]:animate-collapsible-down",
+      className,
+    )}
+    {...props}
+  >
+    {children}
+  </CollapsiblePrimitive.CollapsibleContent>
+));
+CollapsibleContent.displayName =
+  CollapsiblePrimitive.CollapsibleContent.displayName;
+
+export { Collapsible, CollapsibleTrigger, CollapsibleContent };

web/tailwind.config.cjs

@@ -40,6 +40,8 @@ module.exports = {
       animation: {
         "accordion-down": "accordion-down 0.2s ease-out",
         "accordion-up": "accordion-up 0.2s ease-out",
+        "collapsible-down": "collapsible-down 0.2s ease-out",
+        "collapsible-up": "collapsible-up 0.2s ease-out",
         move: "move 3s ease-in-out infinite",
         scale1: "scale1 3s ease-in-out infinite",
         scale2: "scale2 3s ease-in-out infinite",
@@ -148,6 +150,14 @@ module.exports = {
           from: { height: "var(--radix-accordion-content-height)" },
           to: { height: 0 },
         },
+        "collapsible-down": {
+          from: { height: "0px" },
+          to: { height: "var(--radix-collapsible-content-height)" },
+        },
+        "collapsible-up": {
+          from: { height: "var(--radix-collapsible-content-height)" },
+          to: { height: "0px" },
+        },
         move: {
           "50%": { left: "calc(100% - 7px)" },
         },