Add action and icon prop to SelectPanel message

.changeset/sharp-buckets-study.md

@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+Adds `icon` and `action` props to `SelectPanelMessage` to improve UX and accessibility.

packages/react/src/SelectPanel/SelectPanel.docs.json

@@ -163,7 +163,7 @@
     },
     {
       "name": "message",
-      "type": "{title: string | React.ReactElement; variant: 'empty' | 'error' | 'warning';  body: React.ReactNode;}",
+      "type": "{title: string | React.ReactElement; variant: 'empty' | 'error' | 'warning';  body: React.ReactNode; icon?:React.ComponentType<IconProps>;action?: React.ReactElement;}",
       "defaultValue": "A default empty message is provided if this option is not configured. Supply a custom empty message to override the default.",
       "description": "Message to display in the panel in case of error or empty results"
     },
@@ -210,4 +210,4 @@
     }
   ],
   "subcomponents": []
-}
+}

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

@@ -1,4 +1,4 @@
-import React, {useState, useRef} from 'react'
+import React, {useState, useRef, useEffect} from 'react'
 import type {Meta, StoryObj} from '@storybook/react-vite'
 import Box from '../Box'
 import {Button} from '../Button'
@@ -11,19 +11,23 @@ import {
   GearIcon,
   InfoIcon,
   NoteIcon,
+  PlusIcon,
   ProjectIcon,
   SearchIcon,
   StopIcon,
+  TagIcon,
   TriangleDownIcon,
   TypographyIcon,
   VersionsIcon,
+  type IconProps,
 } from '@primer/octicons-react'
 import useSafeTimeout from '../hooks/useSafeTimeout'
 import ToggleSwitch from '../ToggleSwitch'
 import Text from '../Text'
 import FormControl from '../FormControl'
 import {SegmentedControl} from '../SegmentedControl'
 import {Stack} from '../Stack'
+import {FeatureFlags} from '../FeatureFlags'
 
 const meta: Meta<typeof SelectPanel> = {
   title: 'Components/SelectPanel/Features',
@@ -889,6 +893,103 @@ export const WithInactiveItems = () => {
   )
 }
 
+export const WithMessage = () => {
+  const [selected, setSelected] = useState<ItemInput[]>([])
+  const [filter, setFilter] = useState('')
+  const [open, setOpen] = useState(false)
+  const [messageVariant, setMessageVariant] = useState(0)
+
+  const messageVariants: Array<
+    | undefined
+    | {
+        title: string
+        body: string | React.ReactElement
+        variant: 'empty' | 'error' | 'warning'
+        icon?: React.ComponentType<IconProps>
+        action?: React.ReactElement
+      }
+  > = [
+    undefined, // Default message
+    {
+      variant: 'empty',
+      title: 'No labels found',
+      body: 'Try adjusting your search or create a new label',
+      icon: TagIcon,
+      action: (
+        <Button variant="default" size="small" leadingVisual={PlusIcon} onClick={() => {}}>
+          Create new label
+        </Button>
+      ),
+    },
+    {
+      variant: 'error',
+      title: 'Failed to load labels',
+      body: (
+        <>
+          Check your network connection and try again or <Link href="/support">contact support</Link>
+        </>
+      ),
+    },
+    {
+      variant: 'warning',
+      title: 'Some labels may be outdated',
+      body: 'Consider refreshing to get the latest data',
+    },
+  ]
+
+  const itemsToShow = messageVariant === 0 ? items.slice(0, 3) : []
+  const filteredItems = itemsToShow.filter(item => item.text.toLowerCase().startsWith(filter.toLowerCase()))
+
+  useEffect(() => {
+    setFilter('')
+  }, [messageVariant])
+
+  return (
+    <FeatureFlags flags={{primer_react_select_panel_with_modern_action_list: true}}>
+      <Stack align="start">
+        <FormControl>
+          <FormControl.Label>Message variant</FormControl.Label>
+          <SegmentedControl aria-label="Message variant" onChange={setMessageVariant}>
+            <SegmentedControl.Button defaultSelected aria-label="Default message">
+              Default message
+            </SegmentedControl.Button>
+            <SegmentedControl.Button aria-label="Empty" leadingIcon={SearchIcon}>
+              Empty
+            </SegmentedControl.Button>
+            <SegmentedControl.Button aria-label="Error" leadingIcon={StopIcon}>
+              Error
+            </SegmentedControl.Button>
+            <SegmentedControl.Button aria-label="Warning" leadingIcon={AlertIcon}>
+              Warning
+            </SegmentedControl.Button>
+          </SegmentedControl>
+        </FormControl>
+        <FormControl>
+          <FormControl.Label>SelectPanel with message</FormControl.Label>
+          <SelectPanel
+            renderAnchor={({children, ...anchorProps}) => (
+              <Button trailingAction={TriangleDownIcon} {...anchorProps}>
+                {children}
+              </Button>
+            )}
+            placeholder="Select labels"
+            open={open}
+            onOpenChange={setOpen}
+            items={filteredItems}
+            selected={selected}
+            onSelectedChange={setSelected}
+            onFilterChange={setFilter}
+            overlayProps={{width: 'small', height: 'medium'}}
+            width="medium"
+            message={messageVariants[messageVariant]}
+            filterValue={filter}
+          />
+        </FormControl>
+      </Stack>
+    </FeatureFlags>
+  )
+}
+
 export const WithSelectAll = () => {
   const [selected, setSelected] = useState<ItemInput[]>([])
   const [filter, setFilter] = useState('')

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

@@ -146,6 +146,10 @@
   }
 }
 
+.MessageAction {
+  margin-top: var(--base-size-8);
+}
+
 .ResponsiveCloseButton {
   display: inline-grid;
 }

packages/react/src/SelectPanel/SelectPanel.test.tsx

@@ -454,7 +454,11 @@ for (const useModernActionList of [false, true]) {
         )
       }
 
-      const SelectPanelWithCustomMessages: React.FC<{items: SelectPanelProps['items']}> = ({items}) => {
+      const SelectPanelWithCustomMessages: React.FC<{
+        items: SelectPanelProps['items']
+        withAction?: boolean
+        onAction?: () => void
+      }> = ({items, withAction = false, onAction}) => {
         const [selected, setSelected] = React.useState<SelectPanelProps['items']>([])
         const [filter, setFilter] = React.useState('')
         const [open, setOpen] = React.useState(false)
@@ -463,14 +467,21 @@ for (const useModernActionList of [false, true]) {
           setSelected(selected)
         }
 
-        const emptyMessage: {variant: 'empty'; title: string; body: string} = {
-          variant: 'empty',
+        const emptyMessage = {
+          variant: 'empty' as const,
           title: "You haven't created any projects yet",
           body: 'Start your first project to organise your issues',
+          ...(withAction && {
+            action: (
+              <button type="button" onClick={onAction} data-testid="create-project-action">
+                Create new project
+              </button>
+            ),
+          }),
         }
 
-        const noResultsMessage = (filter: string): {variant: 'empty'; title: string; body: string} => ({
-          variant: 'empty',
+        const noResultsMessage = (filter: string) => ({
+          variant: 'empty' as const,
           title: `No language found for ${filter}`,
           body: 'Adjust your search term to find other languages',
         })
@@ -900,7 +911,34 @@ for (const useModernActionList of [false, true]) {
             expect(screen.getByText('Start your first project to organise your issues')).toBeVisible()
           })
         })
+
+        it('should display action button in custom empty state message', async () => {
+          const handleAction = jest.fn()
+          const user = userEvent.setup()
+
+          renderWithFlag(
+            <SelectPanelWithCustomMessages items={[]} withAction={true} onAction={handleAction} />,
+            useModernActionList,
+          )
+
+          await waitFor(async () => {
+            await user.click(screen.getByText('Select items'))
+            expect(screen.getByText("You haven't created any projects yet")).toBeVisible()
+            expect(screen.getByText('Start your first project to organise your issues')).toBeVisible()
+
+            // Check that action button is visible
+            const actionButton = screen.getByTestId('create-project-action')
+            expect(actionButton).toBeVisible()
+            expect(actionButton).toHaveTextContent('Create new project')
+          })
+
+          // Test that action button is clickable
+          const actionButton = screen.getByTestId('create-project-action')
+          await user.click(actionButton)
+          expect(handleAction).toHaveBeenCalledTimes(1)
+        })
       })
+
       describe('with footer', () => {
         function SelectPanelWithFooter() {
           const [selected, setSelected] = React.useState<SelectPanelProps['items']>([])

packages/react/src/SelectPanel/SelectPanel.tsx

@@ -1,4 +1,12 @@
-import {AlertIcon, InfoIcon, SearchIcon, StopIcon, TriangleDownIcon, XIcon} from '@primer/octicons-react'
+import {
+  AlertIcon,
+  InfoIcon,
+  SearchIcon,
+  StopIcon,
+  TriangleDownIcon,
+  XIcon,
+  type IconProps,
+} from '@primer/octicons-react'
 import React, {useCallback, useEffect, useMemo, useRef, useState} from 'react'
 import type {AnchoredOverlayProps} from '../AnchoredOverlay'
 import {AnchoredOverlay} from '../AnchoredOverlay'
@@ -98,6 +106,8 @@ interface SelectPanelBaseProps {
     title: string
     body: string | React.ReactElement
     variant: 'empty' | 'error' | 'warning'
+    icon?: React.ComponentType<IconProps>
+    action?: React.ReactElement
   }
   /**
    * @deprecated Use `secondaryAction` instead.
@@ -669,7 +679,7 @@ function Panel({
       return DefaultEmptyMessage
     } else if (message) {
       return (
-        <SelectPanelMessage title={message.title} variant={message.variant}>
+        <SelectPanelMessage title={message.title} variant={message.variant} icon={message.icon} action={message.action}>
           {message.body}
         </SelectPanelMessage>
       )

packages/react/src/SelectPanel/SelectPanelMessage.tsx

@@ -1,7 +1,7 @@
 import type React from 'react'
 import Text from '../Text'
 import Octicon from '../Octicon'
-import {AlertIcon} from '@primer/octicons-react'
+import {AlertIcon, type IconProps} from '@primer/octicons-react'
 import classes from './SelectPanel.module.css'
 import {clsx} from 'clsx'
 
@@ -10,14 +10,36 @@ export type SelectPanelMessageProps = {
   title: string
   variant: 'empty' | 'error' | 'warning'
   className?: string
+  /**
+   * Custom icon to display above the title.
+   * When not provided, uses NoEntryIcon for empty states and AlertIcon for error/warning states.
+   */
+  icon?: React.ComponentType<IconProps>
+  /**
+   * Custom action element to display below the message body.
+   * This can be used to render interactive elements like buttons or links.
+   * Ensure the action element is accessible by providing appropriate ARIA attributes
+   * and making it keyboard-navigable.
+   */
+  action?: React.ReactElement
 }
 
-export const SelectPanelMessage: React.FC<SelectPanelMessageProps> = ({variant, title, children, className}) => {
+export const SelectPanelMessage: React.FC<SelectPanelMessageProps> = ({
+  variant,
+  title,
+  children,
+  className,
+  icon: CustomIcon,
+  action,
+}) => {
+  const IconComponent = CustomIcon || (variant !== 'empty' ? AlertIcon : undefined)
+
   return (
     <div className={clsx(classes.Message, className)}>
-      {variant !== 'empty' ? <Octicon icon={AlertIcon} className={classes.MessageIcon} data-variant={variant} /> : null}
+      {IconComponent && <Octicon icon={IconComponent} className={classes.MessageIcon} data-variant={variant} />}
       <Text className={classes.MessageTitle}>{title}</Text>
       <Text className={classes.MessageBody}>{children}</Text>
+      {action && <div className={classes.MessageAction}>{action}</div>}
     </div>
   )
 }