From 81b192dfecf189d5ebc08ab63322bd8fc769feac Mon Sep 17 00:00:00 2001
From: unix <unix.bio@gmail.com>
Date: Tue, 9 Jun 2020 08:37:56 +0800
Subject: [PATCH] feat(pagination): add component

---
 components/index.ts                           |   1 +
 components/pagination/index.ts                |   8 +
 components/pagination/pagination-context.ts   |  18 +++
 components/pagination/pagination-ellipsis.tsx |  60 ++++++++
 components/pagination/pagination-item.tsx     | 101 +++++++++++++
 components/pagination/pagination-next.tsx     |  19 +++
 components/pagination/pagination-pages.tsx    | 104 +++++++++++++
 components/pagination/pagination-previous.tsx |  19 +++
 components/pagination/pagination.tsx          | 142 ++++++++++++++++++
 9 files changed, 472 insertions(+)
 create mode 100644 components/pagination/index.ts
 create mode 100644 components/pagination/pagination-context.ts
 create mode 100644 components/pagination/pagination-ellipsis.tsx
 create mode 100644 components/pagination/pagination-item.tsx
 create mode 100644 components/pagination/pagination-next.tsx
 create mode 100644 components/pagination/pagination-pages.tsx
 create mode 100644 components/pagination/pagination-previous.tsx
 create mode 100644 components/pagination/pagination.tsx

diff --git a/components/index.ts b/components/index.ts
index 647a4b8..517e943 100644
--- a/components/index.ts
+++ b/components/index.ts
@@ -59,3 +59,4 @@ export { default as Page } from './page'
 export { default as Grid } from './grid'
 export { default as ButtonGroup } from './button-group'
 export { default as Breadcrumbs } from './breadcrumbs'
+export { default as Pagination } from './pagination'
diff --git a/components/pagination/index.ts b/components/pagination/index.ts
new file mode 100644
index 0000000..9a60112
--- /dev/null
+++ b/components/pagination/index.ts
@@ -0,0 +1,8 @@
+import Pagination from './pagination'
+import PaginationPrevious from './pagination-previous'
+import PaginationNext from './pagination-next'
+
+Pagination.Previous = PaginationPrevious
+Pagination.Next = PaginationNext
+
+export default Pagination
diff --git a/components/pagination/pagination-context.ts b/components/pagination/pagination-context.ts
new file mode 100644
index 0000000..8342ec7
--- /dev/null
+++ b/components/pagination/pagination-context.ts
@@ -0,0 +1,18 @@
+import React from 'react'
+import { tuple } from '../utils/prop-types'
+const paginationUpdateTypes = tuple('prev', 'next', 'click')
+
+export type PaginationUpdateType = typeof paginationUpdateTypes[number]
+
+export interface PaginationConfig {
+  isFirst?: boolean
+  isLast?: boolean
+  update?: (type: PaginationUpdateType) => void
+}
+
+const defaultContext = {}
+
+export const PaginationContext = React.createContext<PaginationConfig>(defaultContext)
+
+export const usePaginationContext = (): PaginationConfig =>
+  React.useContext<PaginationConfig>(PaginationContext)
diff --git a/components/pagination/pagination-ellipsis.tsx b/components/pagination/pagination-ellipsis.tsx
new file mode 100644
index 0000000..e4d759d
--- /dev/null
+++ b/components/pagination/pagination-ellipsis.tsx
@@ -0,0 +1,60 @@
+import React, { useState } from 'react'
+import PaginationItem from './pagination-item'
+
+interface Props {
+  isBefore?: boolean
+  onClick?: (e: React.MouseEvent) => void
+}
+
+const PaginationEllipsis: React.FC<Props> = ({ isBefore, onClick }) => {
+  const [showMore, setShowMore] = useState(false)
+
+  return (
+    <PaginationItem
+      onClick={e => onClick && onClick(e)}
+      onMouseEnter={() => setShowMore(true)}
+      onMouseLeave={() => setShowMore(false)}>
+      {showMore ? (
+        <svg
+          className="more"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          fill="none"
+          shapeRendering="geometricPrecision">
+          <path d="M13 17l5-5-5-5" />
+          <path d="M6 17l5-5-5-5" />
+        </svg>
+      ) : (
+        <svg
+          viewBox="0 0 24 24"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          fill="none"
+          shapeRendering="geometricPrecision">
+          <circle cx="12" cy="12" r="1" fill="currentColor" />
+          <circle cx="19" cy="12" r="1" fill="currentColor" />
+          <circle cx="5" cy="12" r="1" fill="currentColor" />
+        </svg>
+      )}
+
+      <style jsx>{`
+        svg {
+          color: currentColor;
+          stroke: currentColor;
+          width: 1rem;
+          height: 1rem;
+        }
+
+        .more {
+          transform: rotate(${isBefore ? '180deg' : '0deg'});
+        }
+      `}</style>
+    </PaginationItem>
+  )
+}
+
+export default PaginationEllipsis
diff --git a/components/pagination/pagination-item.tsx b/components/pagination/pagination-item.tsx
new file mode 100644
index 0000000..e4b7283
--- /dev/null
+++ b/components/pagination/pagination-item.tsx
@@ -0,0 +1,101 @@
+import React, { useMemo } from 'react'
+import useTheme from '../styles/use-theme'
+import { addColorAlpha } from 'components/utils/color'
+
+interface Props {
+  active?: boolean
+  disabled?: boolean
+  onClick?: (e: React.MouseEvent) => void
+}
+
+type NativeAttrs = Omit<React.ButtonHTMLAttributes<any>, keyof Props>
+export type PaginationItemProps = Props & NativeAttrs
+
+const PaginationItem: React.FC<React.PropsWithChildren<PaginationItemProps>> = ({
+  active,
+  children,
+  disabled,
+  onClick,
+  ...props
+}) => {
+  const theme = useTheme()
+  const [hover, activeHover] = useMemo(
+    () => [addColorAlpha(theme.palette.success, 0.1), addColorAlpha(theme.palette.success, 0.8)],
+    [theme.palette.success],
+  )
+  const clickHandler = (event: React.MouseEvent) => {
+    if (disabled) return
+    onClick && onClick(event)
+  }
+
+  return (
+    <li>
+      <button
+        className={`${active ? 'active' : ''} ${disabled ? 'disabled' : ''}`}
+        onClick={clickHandler}
+        {...props}>
+        {children}
+      </button>
+      <style jsx>{`
+        li {
+          margin-right: 6px;
+          display: inline-block;
+        }
+        button {
+          border: none;
+          display: inline-flex;
+          align-items: center;
+          justify-content: center;
+          box-sizing: border-box;
+          text-transform: capitalize;
+          user-select: none;
+          white-space: nowrap;
+          text-align: center;
+          vertical-align: middle;
+          box-shadow: none;
+          outline: none;
+          height: var(--pagination-size);
+          min-width: var(--pagination-size);
+          font-size: inherit;
+          cursor: pointer;
+          color: ${theme.palette.success};
+          border-radius: ${theme.layout.radius};
+          background-color: ${theme.palette.background};
+          transition: all linear 200ms 0ms;
+        }
+
+        button:hover {
+          background-color: ${hover};
+        }
+
+        .active {
+          font-weight: bold;
+          background-color: ${theme.palette.success};
+          color: ${theme.palette.background};
+          box-shadow: ${theme.expressiveness.shadowSmall};
+        }
+
+        .active:hover {
+          background-color: ${activeHover};
+          box-shadow: ${theme.expressiveness.shadowMedium};
+        }
+
+        .disabled {
+          color: ${theme.palette.accents_4};
+          cursor: not-allowed;
+        }
+
+        .disabled:hover {
+          background-color: ${theme.palette.accents_2};
+        }
+
+        button :global(svg) {
+          width: 1.3em;
+          height: 1.3em;
+        }
+      `}</style>
+    </li>
+  )
+}
+
+export default PaginationItem
diff --git a/components/pagination/pagination-next.tsx b/components/pagination/pagination-next.tsx
new file mode 100644
index 0000000..d01f893
--- /dev/null
+++ b/components/pagination/pagination-next.tsx
@@ -0,0 +1,19 @@
+import React from 'react'
+import PaginationItem from './pagination-item'
+import { usePaginationContext } from './pagination-context'
+
+export type PaginationNextProps = React.ButtonHTMLAttributes<any>
+
+const PaginationNext: React.FC<React.PropsWithChildren<PaginationNextProps>> = ({
+  children,
+  ...props
+}) => {
+  const { update, isLast } = usePaginationContext()
+  return (
+    <PaginationItem onClick={() => update && update('next')} disabled={isLast} {...props}>
+      {children}
+    </PaginationItem>
+  )
+}
+
+export default PaginationNext
diff --git a/components/pagination/pagination-pages.tsx b/components/pagination/pagination-pages.tsx
new file mode 100644
index 0000000..50a24a1
--- /dev/null
+++ b/components/pagination/pagination-pages.tsx
@@ -0,0 +1,104 @@
+import React, { Dispatch, SetStateAction, useCallback, useMemo } from 'react'
+import PaginationItem from './pagination-item'
+import PaginationEllipsis from 'components/pagination/pagination-ellipsis'
+
+interface Props {
+  limit: number
+  count: number
+  current: number
+  setPage: Dispatch<SetStateAction<number>>
+}
+
+const PaginationPages: React.FC<Props> = ({ limit, count, current, setPage }) => {
+  const showPages = useMemo(() => {
+    const oddLimit = limit % 2 === 0 ? limit - 1 : limit
+    return oddLimit - 2
+  }, [limit])
+  const middleNumber = (showPages + 1) / 2
+
+  const [showBeforeEllipsis, showAfterEllipsis] = useMemo(() => {
+    const showEllipsis = count > limit
+    return [
+      showEllipsis && current > middleNumber + 1,
+      showEllipsis && current < count - middleNumber,
+    ]
+  }, [current, showPages, middleNumber, count, limit])
+  const pagesArray = useMemo(() => [...new Array(showPages)], [showPages])
+
+  const renderItem = useCallback(
+    (value: number, active: number) => (
+      <PaginationItem
+        key={`pagination-item-${value}`}
+        active={value === active}
+        onClick={() => setPage(value)}>
+        {value}
+      </PaginationItem>
+    ),
+    [],
+  )
+  const startPages = pagesArray.map((_, index) => {
+    const value = index + 2
+    return renderItem(value, current)
+  })
+  const middlePages = pagesArray.map((_, index) => {
+    const middleIndexNumber = middleNumber - (index + 1)
+    const value = current - middleIndexNumber
+    return (
+      <PaginationItem
+        key={`pagination-middle-${index}`}
+        active={index + 1 === middleNumber}
+        onClick={() => setPage(value)}>
+        {value}
+      </PaginationItem>
+    )
+  })
+  const endPages = pagesArray.map((_, index) => {
+    const value = count - (showPages - index)
+    return renderItem(value, current)
+  })
+  if (count <= limit) {
+    /* eslint-disable react/jsx-no-useless-fragment */
+    return (
+      <>
+        {[...new Array(count)].map((_, index) => {
+          const value = index + 1
+          return (
+            <PaginationItem
+              key={`pagination-item-${value}`}
+              active={value === current}
+              onClick={() => setPage(value)}>
+              {value}
+            </PaginationItem>
+          )
+        })}
+      </>
+    )
+    /* eslint-enable */
+  }
+  return (
+    <>
+      {renderItem(1, current)}
+      {showBeforeEllipsis && (
+        <PaginationEllipsis
+          key="pagination-ellipsis-before"
+          isBefore
+          onClick={() => setPage(last => (last - 5 >= 1 ? last - 5 : 1))}
+        />
+      )}
+      {showBeforeEllipsis && showAfterEllipsis
+        ? middlePages
+        : showBeforeEllipsis
+        ? endPages
+        : startPages}
+      {showAfterEllipsis && (
+        <PaginationEllipsis
+          key="pagination-ellipsis-after"
+          onClick={() => setPage(last => (last + 5 <= count ? last + 5 : count))}
+        />
+      )}
+      {renderItem(count, current)}
+    </>
+  )
+}
+
+export default PaginationPages
diff --git a/components/pagination/pagination-previous.tsx b/components/pagination/pagination-previous.tsx
new file mode 100644
index 0000000..79b2bf9
--- /dev/null
+++ b/components/pagination/pagination-previous.tsx
@@ -0,0 +1,19 @@
+import React from 'react'
+import PaginationItem from './pagination-item'
+import { usePaginationContext } from './pagination-context'
+
+export type PaginationNextProps = React.ButtonHTMLAttributes<any>
+
+const PaginationPrevious: React.FC<React.PropsWithChildren<PaginationNextProps>> = ({
+  children,
+  ...props
+}) => {
+  const { update, isFirst } = usePaginationContext()
+  return (
+    <PaginationItem onClick={() => update && update('prev')} disabled={isFirst} {...props}>
+      {children}
+    </PaginationItem>
+  )
+}
+
+export default PaginationPrevious
diff --git a/components/pagination/pagination.tsx b/components/pagination/pagination.tsx
new file mode 100644
index 0000000..8072785
--- /dev/null
+++ b/components/pagination/pagination.tsx
@@ -0,0 +1,142 @@
+import React, { useEffect, useMemo } from 'react'
+import PaginationPrevious from './pagination-previous'
+import PaginationNext from './pagination-next'
+import PaginationPages from './pagination-pages'
+import { PaginationContext, PaginationConfig, PaginationUpdateType } from './pagination-context'
+import useCurrentState from '../utils/use-current-state'
+import { pickChild } from '../utils/collections'
+import { NormalSizes } from '../utils/prop-types'
+
+interface Props {
+  size?: NormalSizes
+  page?: number
+  initialPage?: number
+  count?: number
+  limit?: number
+  onChange?: (val: number) => void
+}
+
+const defaultProps = {
+  size: 'medium' as NormalSizes,
+  initialPage: 1,
+  count: 1,
+  limit: 7,
+}
+
+type NativeAttrs = Omit<React.HTMLAttributes<any>, keyof Props>
+export type PaginationProps = Props & typeof defaultProps & NativeAttrs
+
+type PaginationSize = {
+  font: string
+  width: string
+}
+
+const getPaginationSizes = (size: NormalSizes) => {
+  const sizes: { [key in NormalSizes]: PaginationSize } = {
+    mini: {
+      font: '.75rem',
+      width: '1.25rem',
+    },
+    small: {
+      font: '.75rem',
+      width: '1.65rem',
+    },
+    medium: {
+      font: '.875rem',
+      width: '2rem',
+    },
+    large: {
+      font: '1rem',
+      width: '2.4rem',
+    },
+  }
+  return sizes[size]
+}
+
+const Pagination: React.FC<React.PropsWithChildren<PaginationProps>> = ({
+  page: customPage,
+  initialPage,
+  count,
+  limit,
+  size,
+  children,
+  onChange,
+}) => {
+  const [page, setPage, pageRef] = useCurrentState(initialPage)
+  const [, prevChildren] = pickChild(children, PaginationPrevious)
+  const [, nextChildren] = pickChild(children, PaginationNext)
+
+  const [prevItem, nextItem] = useMemo(() => {
+    const hasChildren = (c: any) => React.Children.count(c) > 0
+    const prevDefault = <PaginationPrevious>prev</PaginationPrevious>
+    const nextDefault = <PaginationNext>next</PaginationNext>
+    return [
+      hasChildren(prevChildren) ? prevChildren : prevDefault,
+      hasChildren(nextChildren) ? nextChildren : nextDefault,
+    ]
+  }, [prevChildren, nextChildren])
+  const { font, width } = useMemo(() => getPaginationSizes(size), [size])
+
+  const update = (type: PaginationUpdateType) => {
+    if (type === 'prev' && pageRef.current > 1) {
+      setPage(last => last - 1)
+    }
+    if (type === 'next' && pageRef.current < count) {
+      setPage(last => last + 1)
+    }
+  }
+  const values = useMemo<PaginationConfig>(
+    () => ({
+      isFirst: page <= 1,
+      isLast: page >= count,
+      update,
+    }),
+    [page],
+  )
+
+  useEffect(() => {
+    onChange && onChange(page)
+  }, [page])
+  useEffect(() => {
+    if (customPage !== undefined) {
+      setPage(customPage)
+    }
+  }, [customPage])
+
+  return (
+    <PaginationContext.Provider value={values}>
+      <nav>
+        {prevItem}
+        <PaginationPages count={count} current={page} limit={limit} setPage={setPage} />
+        {nextItem}
+      </nav>
+      <style jsx>{`
+        nav {
+          margin: 0;
+          padding: 0;
+          font-variant: tabular-nums;
+          font-feature-settings: 'tnum';
+          font-size: ${font};
+          --pagination-size: ${width};
+        }
+
+        nav :global(button:last-of-type) {
+          margin-right: 0;
+        }
+      `}</style>
+    </PaginationContext.Provider>
+  )
+}
+
+type MemoPaginationComponent<P = {}> = React.NamedExoticComponent<P> & {
+  Previous: typeof PaginationPrevious
+  Next: typeof PaginationNext
+}
+
+type ComponentProps = Partial<typeof defaultProps> &
+  Omit<Props, keyof typeof defaultProps> &
+  NativeAttrs
+
+Pagination.defaultProps = defaultProps
+
+export default React.memo(Pagination) as MemoPaginationComponent<ComponentProps>