#434

frontend/src/components/common/SortableItem.tsx

@@ -0,0 +1,50 @@
+import { defaultAnimateLayoutChanges, useSortable } from '@dnd-kit/sortable'
+import { CSS } from '@dnd-kit/utilities'
+
+import { useClientMotion } from '@/lib/useClientMotion'
+import { cn } from '@/lib/utils'
+
+import type { ReactNode } from 'react'
+
+type Name = { text: string; language: string }
+
+
+const SortableItem = ({ id, name, fixed, children, moveGroup }: {
+    id: string; name: Name; fixed?: boolean; children: ReactNode
+    moveGroup: (direction: number) => void },
+) => {
+  const motion = useClientMotion ()
+  const item = useSortable ({ id, disabled: fixed,
+      transition: { duration: motion.duration ('reorder'), easing: motion.easing },
+      animateLayoutChanges: options => !motion.reduced
+          && defaultAnimateLayoutChanges ({ ...options, wasDragging: true }) })
+  return <div ref={item.setNodeRef}
+      style={{ transform: CSS.Transform.toString (item.transform), transition: item.transition }}
+      className={cn ('relative max-w-full rounded border border-slate-300 bg-white',
+          'text-slate-900 dark:border-slate-600 dark:bg-slate-900 dark:text-slate-100',
+          item.isDragging && 'opacity-30 ring-2 ring-blue-500 dark:ring-blue-400')}>
+    <div className="flex min-w-0 items-start gap-1 px-1">
+      {fixed ? <span className="w-6 shrink-0"/> : <button type="button"
+          ref={item.setActivatorNodeRef} {...item.attributes} {...item.listeners}
+          aria-label={name.text} lang={name.language}
+          aria-keyshortcuts="Space ArrowUp ArrowDown ArrowLeft ArrowRight Enter Escape"
+          className="mt-1 w-6 shrink-0 cursor-grab touch-none rounded
+          focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-500
+          active:cursor-grabbing dark:focus-visible:ring-blue-400"
+          onClick={event => event.stopPropagation ()}
+          onKeyDown={event => {
+            if (event.altKey && ['ArrowLeft', 'ArrowRight'].includes (event.key))
+            {
+              event.preventDefault ()
+              event.stopPropagation ()
+              moveGroup (event.key === 'ArrowLeft' ? -1 : 1)
+            }
+            else item.listeners?.onKeyDown?.(event)
+          }}><span aria-hidden>⠿</span></button>}
+      <div className="min-w-0 flex-1 py-1">{children}</div>
+    </div>
+  </div>
+}
+
+
+export default SortableItem