[ui][pagination] implementation

packages/ui/src/Pagination/Pagination.tsx

@@ -0,0 +1,142 @@
+import clsx from 'clsx';
+import type { ReactElement } from 'react';
+import { ChevronLeftIcon, ChevronRightIcon } from '@heroicons/react/20/solid';
+
+type Props = Readonly<{
+  current: number;
+  end: number;
+  label: string;
+  onSelect: (page: number, event: React.MouseEvent<HTMLElement>) => void;
+  pagePadding?: number;
+  start: number;
+}>;
+
+function PaginationPage({
+  isCurrent = false,
+  label,
+  onClick,
+}: Readonly<{
+  isCurrent?: boolean;
+  label: number;
+  onClick: (event: React.MouseEvent<HTMLElement>) => void;
+}>) {
+  return (
+    <button
+      aria-current={isCurrent}
+      className={clsx(
+        'focus:ring-primary-500 focus:border-primary-500 relative inline-flex items-center border px-4 py-2 text-sm font-medium focus:z-20 focus:outline-none focus:ring-1',
+        isCurrent
+          ? 'border-primary-500 bg-primary-50 text-primary-600 z-10'
+          : 'border-slate-300 bg-white text-slate-500 hover:bg-slate-50',
+      )}
+      disabled={isCurrent}
+      type="button"
+      onClick={onClick}>
+      {label}
+    </button>
+  );
+}
+
+function PaginationEllipsis() {
+  return (
+    <span className="relative inline-flex items-center border border-slate-300 bg-white px-4 py-2 text-sm font-medium text-slate-700">
+      ...
+    </span>
+  );
+}
+
+export default function Pagination({
+  current,
+  end,
+  label,
+  onSelect,
+  pagePadding = 1,
+  start = 1,
+}: Props) {
+  const pageNumberSet = new Set();
+  const pageNumberList: Array<number | string> = [];
+  const elements: Array<ReactElement> = [];
+  let lastAddedPage = 0;
+
+  function addPage(page: number) {
+    if (page < start || page > end) {
+      return;
+    }
+
+    if (!pageNumberSet.has(page)) {
+      lastAddedPage = page;
+      pageNumberList.push(page);
+      pageNumberSet.add(page);
+      elements.push(
+        <PaginationPage
+          isCurrent={current === page}
+          label={page}
+          onClick={(event) => {
+            onSelect(page, event);
+          }}
+        />,
+      );
+    }
+  }
+
+  for (let i = start; i <= start + pagePadding; i++) {
+    addPage(i);
+  }
+
+  if (lastAddedPage < current - pagePadding) {
+    elements.push(<PaginationEllipsis />);
+  }
+
+  for (let i = current - pagePadding; i <= current + pagePadding; i++) {
+    addPage(i);
+  }
+
+  if (lastAddedPage < end - pagePadding) {
+    elements.push(<PaginationEllipsis />);
+  }
+
+  for (let i = end - pagePadding; i <= end; i++) {
+    addPage(i);
+  }
+
+  const isPrevButtonDisabled = current === start;
+  const isNextButtonDisabled = current === end;
+
+  return (
+    <nav
+      aria-label={label}
+      className="isolate inline-flex -space-x-px rounded-md shadow-sm">
+      <button
+        aria-label="Previous"
+        className={clsx(
+          'relative inline-flex items-center rounded-l-md border border-slate-300 px-2 py-2 text-sm font-medium focus:z-20',
+          isPrevButtonDisabled
+            ? 'text-slate-300'
+            : 'focus:ring-primary-500 focus:border-primary-500 bg-white text-slate-500 hover:bg-slate-50 focus:outline-none focus:ring-1',
+        )}
+        disabled={isPrevButtonDisabled}
+        type="button"
+        onClick={(event) => {
+          onSelect(current - 1, event);
+        }}>
+        <ChevronLeftIcon aria-hidden="true" className="h-5 w-5" />
+      </button>
+      {elements}
+      <button
+        aria-label="Next"
+        className={clsx(
+          'relative inline-flex items-center rounded-r-md border border-slate-300 px-2 py-2 text-sm font-medium focus:z-20',
+          isNextButtonDisabled
+            ? 'text-slate-300'
+            : 'focus:ring-primary-500 focus:border-primary-500 bg-white text-slate-500 hover:bg-slate-50 focus:outline-none focus:ring-1',
+        )}
+        disabled={isNextButtonDisabled}
+        type="button"
+        onClick={(event) => {
+          onSelect(current + 1, event);
+        }}>
+        <ChevronRightIcon aria-hidden="true" className="h-5 w-5" />
+      </button>
+    </nav>
+  );
+}

packages/ui/src/index.tsx

@@ -19,6 +19,9 @@ export { default as DropdownMenu } from './DropdownMenu/DropdownMenu';
 // HorizontalDivider
 export * from './HorizontalDivider/HorizontalDivider';
 export { default as HorizontalDivider } from './HorizontalDivider/HorizontalDivider';
+// Pagination
+export * from './Pagination/Pagination';
+export { default as Pagination } from './Pagination/Pagination';
 // Select
 export * from './Select/Select';
 export { default as Select } from './Select/Select';