feat: export useDrawerContext

[jasongerbes]

Vaul doesn't currently export the useDrawerContext hook, which would be helpful for getting the direction of the <Drawer.Root> to style the <Drawer.Content> appropriately.

For context, I'm updating my instance of the shadcn/ui Drawer component to support all directions (similar to the Sheet component).

This PR exports useDrawerContext and DrawerContext, and includes some format fixes for the new JSDocs.

[emilkowalski]

Why do we need to export DrawerContext? This can't be used externally.

[CleanBread]

@emilkowalski Hi, Is it any way to get access to context to close drawer?

[jasongerbes]

Hey @emilkowalski, you're right that DrawerContext can't currently be used externally.

My use case requires knowing the value of the direction prop to position the Drawer.Handle appropriately:

• bottom - show Drawer.Handle at the top of the drawer.
• top - show Drawer.Handle at the bottom of the drawer.
• left or right - hide Drawer.Handle and show Drawer.Close instead.

I'm currently using a custom DrawerContext to share the direction prop with children of the Drawer.Root.

Here's the full implementation for context. It builds upon the shadcn/ui Drawer component.

components/ui/drawer.tsx

'use client';

import * as React from 'react';
import { Cross2Icon } from '@radix-ui/react-icons';
import { cva } from 'class-variance-authority';
import { Drawer as DrawerPrimitive } from 'vaul';

import { cn } from '@/lib/utils';

type DrawerContextValue = Pick<DrawerProps, 'direction'>;
const DrawerContext = React.createContext<DrawerContextValue>({});

const useDrawerContext = () => {
  const context = React.useContext(DrawerContext);
  if (!context) {
    throw new Error('useDrawerContext must be used within a Drawer.Root');
  }
  return context;
};

export type DrawerProps = React.ComponentProps<typeof DrawerPrimitive.Root>;

const Drawer = ({
  shouldScaleBackground = true,
  direction = 'bottom',
  ...props
}: DrawerProps) => (
  <DrawerContext.Provider value={{ direction }}>
    <DrawerPrimitive.Root
      shouldScaleBackground={shouldScaleBackground}
      direction={direction}
      {...props}
    />
  </DrawerContext.Provider>
);
Drawer.displayName = 'Drawer';

const DrawerTrigger = DrawerPrimitive.Trigger;

const DrawerPortal = DrawerPrimitive.Portal;

const DrawerClose = DrawerPrimitive.Close;

const DrawerOverlay = React.forwardRef<
  React.ElementRef<typeof DrawerPrimitive.Overlay>,
  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Overlay>
>(({ className, ...props }, ref) => (
  <DrawerPrimitive.Overlay
    ref={ref}
    className={cn('fixed inset-0 z-50 bg-black/80', className)}
    {...props}
  />
));
DrawerOverlay.displayName = DrawerPrimitive.Overlay.displayName;

const drawContentVariants = cva(
  'fixed z-50 flex flex-col bg-background outline-none',
  {
    variants: {
      direction: {
        top: 'inset-x-0 top-0 mb-24 h-auto max-h-[90%] rounded-b-[10px]',
        bottom: 'inset-x-0 bottom-0 mt-24 h-auto max-h-[90%] rounded-t-[10px]',
        left: 'inset-y-0 left-0 mr-24 w-full max-w-[85%] rounded-r-[10px] lg:max-w-3xl',
        right:
          'inset-y-0 right-0 ml-24 w-full max-w-[85%] rounded-l-[10px] lg:max-w-3xl',
      },
    },
    defaultVariants: {
      direction: 'bottom',
    },
  },
);

const DrawerContent = React.forwardRef<
  React.ElementRef<typeof DrawerPrimitive.Content>,
  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Content>
>(({ className, children, ...props }, ref) => {
  const { direction } = useDrawerContext();
  const isHorizontal = direction === 'left' || direction === 'right';

  return (
    <DrawerPortal>
      <DrawerOverlay />
      <DrawerPrimitive.Content
        ref={ref}
        className={cn(drawContentVariants({ direction }), className)}
        {...props}
      >
        {direction === 'bottom' && <DrawerHandle />}

        <div
          className={cn(
            'flex-grow overflow-y-auto',
            direction !== 'bottom' && 'pt-3',
          )}
        >
          {children}
        </div>

        {direction === 'top' && <DrawerHandle />}

        {isHorizontal && (
          <DrawerClose className="absolute right-6 top-6 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
            <Cross2Icon className="size-5" />
            <span className="sr-only">Close</span>
          </DrawerClose>
        )}
      </DrawerPrimitive.Content>
    </DrawerPortal>
  );
});
DrawerContent.displayName = 'DrawerContent';

const DrawerHandle = () => (
  <div className="pb-2 pt-1.5">
    <DrawerPrimitive.Handle />
  </div>
);

const DrawerHeader = ({
  className,
  ...props
}: React.HTMLAttributes<HTMLDivElement>) => (
  <div
    className={cn('grid gap-1.5 p-4 text-left sm:px-6', className)}
    {...props}
  />
);
DrawerHeader.displayName = 'DrawerHeader';

const DrawerBody = ({
  className,
  ...props
}: React.HTMLAttributes<HTMLDivElement>) => (
  <div
    className={cn('mt-auto flex flex-col px-4 sm:px-6', className)}
    {...props}
  />
);
DrawerBody.displayName = 'DrawerBody';

const DrawerFooter = ({
  className,
  ...props
}: React.HTMLAttributes<HTMLDivElement>) => (
  <div
    className={cn('mt-auto flex flex-col gap-2 p-4', className)}
    {...props}
  />
);
DrawerFooter.displayName = 'DrawerFooter';

const DrawerTitle = React.forwardRef<
  React.ElementRef<typeof DrawerPrimitive.Title>,
  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Title>
>(({ className, ...props }, ref) => (
  <DrawerPrimitive.Title
    ref={ref}
    className={cn(
      'text-lg font-semibold leading-none tracking-tight',
      className,
    )}
    {...props}
  />
));
DrawerTitle.displayName = DrawerPrimitive.Title.displayName;

const DrawerDescription = React.forwardRef<
  React.ElementRef<typeof DrawerPrimitive.Description>,
  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Description>
>(({ className, ...props }, ref) => (
  <DrawerPrimitive.Description
    ref={ref}
    className={cn('text-sm text-muted-foreground', className)}
    {...props}
  />
));
DrawerDescription.displayName = DrawerPrimitive.Description.displayName;

export {
  Drawer,
  DrawerPortal,
  DrawerOverlay,
  DrawerTrigger,
  DrawerClose,
  DrawerContent,
  DrawerHeader,
  DrawerBody,
  DrawerFooter,
  DrawerTitle,
  DrawerDescription,
};

This workaround is sufficient, so feel free to close this PR if there are specific issues with exporting DrawerContext.