Add Notice to SelectPanel

.changeset/slick-teams-check.md

@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+Add Notice to SelectPanel

packages/react/src/SelectPanel/SelectPanel.features.stories.tsx

@@ -5,17 +5,23 @@ import {Button} from '../Button'
 import type {ItemInput, GroupedListProps} from '../deprecated/ActionList/List'
 import {SelectPanel, type SelectPanelProps} from './SelectPanel'
 import {
+  AlertIcon,
   FilterIcon,
   GearIcon,
+  InfoIcon,
   NoteIcon,
   ProjectIcon,
   SearchIcon,
+  StopIcon,
   TriangleDownIcon,
   TypographyIcon,
   VersionsIcon,
 } from '@primer/octicons-react'
 import useSafeTimeout from '../hooks/useSafeTimeout'
 import FormControl from '../FormControl'
+import Link from '../Link'
+import {SegmentedControl} from '../SegmentedControl'
+import {Stack} from '../Stack'
 
 const meta = {
   title: 'Components/SelectPanel/Features',
@@ -312,6 +318,92 @@ export const WithFooter = () => {
   )
 }
 
+export const WithNotice = () => {
+  const [selected, setSelected] = useState<ItemInput[]>(items.slice(1, 3))
+  const [filter, setFilter] = useState('')
+  const filteredItems = items.filter(
+    item =>
+      // design guidelines say to always show selected items in the list
+      selected.some(selectedItem => selectedItem.text === item.text) ||
+      // then filter the rest
+      item.text.toLowerCase().startsWith(filter.toLowerCase()),
+  )
+  // design guidelines say to sort selected items first
+  const selectedItemsSortedFirst = filteredItems.sort((a, b) => {
+    const aIsSelected = selected.some(selectedItem => selectedItem.text === a.text)
+    const bIsSelected = selected.some(selectedItem => selectedItem.text === b.text)
+    if (aIsSelected && !bIsSelected) return -1
+    if (!aIsSelected && bIsSelected) return 1
+    return 0
+  })
+  const [open, setOpen] = useState(false)
+  const [noticeVariant, setNoticeVariant] = useState(0)
+
+  const noticeVariants: Array<{text: string | React.ReactElement; variant: 'info' | 'warning' | 'error'}> = [
+    {
+      variant: 'info',
+      text: 'Try a different search term.',
+    },
+    {
+      variant: 'warning',
+      text: (
+        <>
+          You have reached the limit of assignees on your free account.{' '}
+          <Link href="/upgrade">Upgrade your account.</Link>
+        </>
+      ),
+    },
+    {
+      variant: 'error',
+      text: (
+        <>
+          We couldn&apos;t load all collaborators. Try again or if the problem persists,{' '}
+          <Link href="/support">contact support</Link>
+        </>
+      ),
+    },
+  ]
+
+  return (
+    <Stack align="start">
+      <FormControl>
+        <FormControl.Label>Notice variant</FormControl.Label>
+        <SegmentedControl aria-label="Notice variant" onChange={setNoticeVariant}>
+          <SegmentedControl.Button defaultSelected aria-label={'Info'} leadingIcon={InfoIcon}>
+            Info notice
+          </SegmentedControl.Button>
+          <SegmentedControl.Button aria-label={'Warning'} leadingIcon={AlertIcon}>
+            Warning notice
+          </SegmentedControl.Button>
+          <SegmentedControl.Button aria-label={'Error'} leadingIcon={StopIcon}>
+            Error notice
+          </SegmentedControl.Button>
+        </SegmentedControl>
+      </FormControl>
+      <FormControl>
+        <FormControl.Label>SelectPanel with notice</FormControl.Label>
+        <SelectPanel
+          renderAnchor={({children, ...anchorProps}) => (
+            <Button trailingAction={TriangleDownIcon} {...anchorProps}>
+              {children}
+            </Button>
+          )}
+          placeholder="Select labels" // button text when no items are selected
+          open={open}
+          onOpenChange={setOpen}
+          items={selectedItemsSortedFirst}
+          selected={selected}
+          onSelectedChange={setSelected}
+          onFilterChange={setFilter}
+          overlayProps={{width: 'small', height: 'medium'}}
+          width="medium"
+          notice={noticeVariants[noticeVariant]}
+        />
+      </FormControl>
+    </Stack>
+  )
+}
+
 const listOfItems: Array<ItemInput> = [
   {
     id: '1',

packages/react/src/SelectPanel/SelectPanel.module.css

@@ -25,6 +25,43 @@
   color: var(--fgColor-muted);
 }
 
+.Notice {
+  display: flex;
+  padding-top: var(--base-size-12);
+  padding-right: var(--base-size-16);
+  padding-bottom: var(--base-size-12);
+  padding-left: var(--base-size-16);
+  margin-top: var(--base-size-4);
+  font-size: var(--text-body-size-small);
+  flex-direction: row;
+  border-top: var(--borderWidth-thin) solid;
+  border-bottom: var(--borderWidth-thin) solid;
+  gap: var(--base-size-8);
+}
+
+.Notice a {
+  color: inherit;
+  text-decoration: underline;
+}
+
+.Notice:where([data-variant='info']) {
+  color: var(--fgColor-accent);
+  background-color: var(--bgColor-accent-muted);
+  border-color: var(--borderColor-accent-muted);
+}
+
+.Notice:where([data-variant='warning']) {
+  color: var(--fgColor-attention);
+  background-color: var(--bgColor-attention-muted);
+  border-color: var(--borderColor-attention-muted);
+}
+
+.Notice:where([data-variant='error']) {
+  color: var(--fgColor-danger);
+  background-color: var(--bgColor-danger-muted);
+  border-color: var(--borderColor-danger-muted);
+}
+
 .Footer {
   display: flex;
   padding: var(--base-size-8);

packages/react/src/SelectPanel/SelectPanel.tsx

@@ -1,4 +1,4 @@
-import {SearchIcon, TriangleDownIcon, XIcon} from '@primer/octicons-react'
+import {AlertIcon, InfoIcon, SearchIcon, StopIcon, TriangleDownIcon, XIcon} from '@primer/octicons-react'
 import React, {useCallback, useEffect, useMemo, useRef, useState} from 'react'
 import type {AnchoredOverlayProps} from '../AnchoredOverlay'
 import {AnchoredOverlay} from '../AnchoredOverlay'
@@ -127,6 +127,10 @@ interface SelectPanelBaseProps {
   footer?: string | React.ReactElement
   initialLoadingType?: InitialLoadingType
   className?: string
+  notice?: {
+    text: string | React.ReactElement
+    variant: 'info' | 'warning' | 'error'
+  }
   onCancel?: () => void
 }
 
@@ -189,6 +193,7 @@ export function SelectPanel({
   height,
   width,
   id,
+  notice,
   onCancel,
   ...listProps
 }: SelectPanelProps): JSX.Element {
@@ -436,6 +441,12 @@ export function SelectPanel({
   }
   const usingModernActionList = useFeatureFlag('primer_react_select_panel_with_modern_action_list')
 
+  const iconForNoticeVariant = {
+    info: <InfoIcon size={16} />,
+    warning: <AlertIcon size={16} />,
+    error: <StopIcon size={16} />,
+  }
+
   return (
     <LiveRegion>
       <AnchoredOverlay
@@ -523,6 +534,12 @@ export function SelectPanel({
               />
             )}
           </Box>
+          {notice && (
+            <div aria-live="polite" data-variant={notice.variant} className={classes.Notice}>
+              {iconForNoticeVariant[notice.variant]}
+              <div>{notice.text}</div>
+            </div>
+          )}
           <FilteredActionList
             filterValue={filterValue}
             onFilterChange={onFilterChange}