UI: Improve controls addon

code/addons/controls/package.json

@@ -72,6 +72,7 @@
     "@storybook/client-logger": "workspace:*",
     "@storybook/components": "workspace:*",
     "@storybook/core-common": "workspace:*",
+    "@storybook/core-events": "workspace:*",
     "@storybook/manager-api": "workspace:*",
     "@storybook/node-logger": "workspace:*",
     "@storybook/preview-api": "workspace:*",

code/addons/controls/src/ControlsPanel.tsx

@@ -1,18 +1,13 @@
 import type { FC } from 'react';
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import {
   useArgs,
   useGlobals,
   useArgTypes,
   useParameter,
   useStorybookState,
 } from '@storybook/manager-api';
-import {
-  PureArgsTable as ArgsTable,
-  NoControlsWarning,
-  type PresetColor,
-  type SortType,
-} from '@storybook/blocks';
+import { PureArgsTable as ArgsTable, type PresetColor, type SortType } from '@storybook/blocks';
 
 import type { ArgTypes } from '@storybook/types';
 import { PARAM_KEY } from './constants';
@@ -21,24 +16,26 @@ interface ControlsParameters {
   sort?: SortType;
   expanded?: boolean;
   presetColors?: PresetColor[];
+
+  /** @deprecated No longer used, will be removed in Storybook 8.0 */
   hideNoControlsWarning?: boolean;
 }
 
 export const ControlsPanel: FC = () => {
+  const [isLoading, setIsLoading] = useState(true);
   const [args, updateArgs, resetArgs] = useArgs();
   const [globals] = useGlobals();
   const rows = useArgTypes();
-  const isArgsStory = useParameter<boolean>('__isArgsStory', false);
-  const {
-    expanded,
-    sort,
-    presetColors,
-    hideNoControlsWarning = false,
-  } = useParameter<ControlsParameters>(PARAM_KEY, {});
-  const { path } = useStorybookState();
+  const { expanded, sort, presetColors } = useParameter<ControlsParameters>(PARAM_KEY, {});
+  const { path, previewInitialized } = useStorybookState();
+
+  // If the story is prepared, then show the args table
+  // and reset the loading states
+  useEffect(() => {
+    if (previewInitialized) setIsLoading(false);
+  }, [previewInitialized]);
 
   const hasControls = Object.values(rows).some((arg) => arg?.control);
-  const showWarning = !(hasControls && isArgsStory) && !hideNoControlsWarning;
 
   const withPresetColors = Object.entries(rows).reduce((acc, [key, arg]) => {
     if (arg?.control?.type !== 'color' || arg?.control?.presetColors) acc[key] = arg;
@@ -47,21 +44,17 @@ export const ControlsPanel: FC = () => {
   }, {} as ArgTypes);
 
   return (
-    <>
-      {showWarning && <NoControlsWarning />}
-      <ArgsTable
-        {...{
-          key: path, // resets state when switching stories
-          compact: !expanded && hasControls,
-          rows: withPresetColors,
-          args,
-          globals,
-          updateArgs,
-          resetArgs,
-          inAddonPanel: true,
-          sort,
-        }}
-      />
-    </>
+    <ArgsTable
+      key={path} // resets state when switching stories
+      compact={!expanded && hasControls}
+      rows={withPresetColors}
+      args={args}
+      globals={globals}
+      updateArgs={updateArgs}
+      resetArgs={resetArgs}
+      inAddonPanel
+      sort={sort}
+      isLoading={isLoading}
+    />
   );
 };

code/builders/builder-webpack5/src/preview/iframe-webpack.config.ts

@@ -31,6 +31,10 @@ const getAbsolutePath = <I extends string>(input: I): I =>
   dirname(require.resolve(join(input, 'package.json'))) as any;
 
 const storybookPaths: Record<string, string> = {
+  // this is a temporary hack to get webpack to alias this correctly
+  [`@storybook/components/experimental`]: `${getAbsolutePath(
+    `@storybook/components`
+  )}/dist/experimental`,
   ...[
     // these packages are not pre-bundled because of react dependencies
     'components',

code/frameworks/angular/template/stories/argTypes/doc-injectable/doc-injectable.stories.ts

@@ -2,9 +2,6 @@ import { DocInjectableService } from './doc-injectable.service';
 
 export default {
   component: DocInjectableService,
-  parameters: {
-    controls: { hideNoControlsWarning: true },
-  },
 };
 
 const modules = {

code/frameworks/angular/template/stories/argTypes/doc-pipe/doc-pipe.stories.ts

@@ -2,9 +2,6 @@ import { DocPipe } from './doc-pipe.pipe';
 
 export default {
   component: DocPipe,
-  parameters: {
-    controls: { hideNoControlsWarning: true },
-  },
 };
 
 const modules = {

code/ui/blocks/src/blocks/Description.stories.tsx

@@ -12,7 +12,6 @@ const meta: Meta<typeof Description> = {
   parameters: {
     controls: {
       include: [],
-      hideNoControlsWarning: true,
     },
     // workaround for https://github.com/storybookjs/storybook/issues/20505
     docs: { source: { type: 'code' } },

code/ui/blocks/src/components/ArgsTable/ArgControl.tsx

@@ -1,6 +1,7 @@
 import type { FC } from 'react';
 import React, { useCallback, useState, useEffect } from 'react';
 
+import { Link } from '@storybook/components/experimental';
 import {
   BooleanControl,
   ColorControl,
@@ -18,6 +19,7 @@ export interface ArgControlProps {
   row: ArgType;
   arg: any;
   updateArgs: (args: Args) => void;
+  isHovered: boolean;
 }
 
 const Controls: Record<string, FC> = {
@@ -40,7 +42,7 @@ const Controls: Record<string, FC> = {
 
 const NoControl = () => <>-</>;
 
-export const ArgControl: FC<ArgControlProps> = ({ row, arg, updateArgs }) => {
+export const ArgControl: FC<ArgControlProps> = ({ row, arg, updateArgs, isHovered }) => {
   const { key, control } = row;
 
   const [isFocused, setFocused] = useState(false);
@@ -63,7 +65,18 @@ export const ArgControl: FC<ArgControlProps> = ({ row, arg, updateArgs }) => {
   const onBlur = useCallback(() => setFocused(false), []);
   const onFocus = useCallback(() => setFocused(true), []);
 
-  if (!control || control.disable) return <NoControl />;
+  if (!control || control.disable)
+    return isHovered ? (
+      <Link
+        href="https://storybook.js.org/docs/react/essentials/controls"
+        target="_blank"
+        withArrow
+      >
+        Setup controls
+      </Link>
+    ) : (
+      <NoControl />
+    );
 
   // row.name is a display name and not a suitable DOM input id or name - i might contain whitespace etc.
   // row.key is a hash key and therefore a much safer choice

code/ui/blocks/src/components/ArgsTable/ArgRow.tsx

@@ -1,5 +1,5 @@
 import type { FC } from 'react';
-import React from 'react';
+import React, { useState } from 'react';
 import Markdown from 'markdown-to-jsx';
 import { transparentize } from 'polished';
 import { styled } from '@storybook/theming';
@@ -76,6 +76,7 @@ const StyledTd = styled.td<{ expandable: boolean }>(({ theme, expandable }) => (
 }));
 
 export const ArgRow: FC<ArgRowProps> = (props) => {
+  const [isHovered, setIsHovered] = useState(false);
   const { row, updateArgs, compact, expandable, initialExpandedArgs } = props;
   const { name, description } = row;
   const table = (row.table || {}) as TableAnnotation;
@@ -85,7 +86,7 @@ export const ArgRow: FC<ArgRowProps> = (props) => {
   const hasDescription = description != null && description !== '';
 
   return (
-    <tr>
+    <tr onMouseEnter={() => setIsHovered(true)} onMouseLeave={() => setIsHovered(false)}>
       <StyledTd expandable={expandable}>
         <Name>{name}</Name>
         {required ? <Required title="Required">*</Required> : null}
@@ -118,7 +119,7 @@ export const ArgRow: FC<ArgRowProps> = (props) => {
       )}
       {updateArgs ? (
         <td>
-          <ArgControl {...(props as ArgControlProps)} />
+          <ArgControl {...(props as ArgControlProps)} isHovered={isHovered} />
         </td>
       ) : null}
     </tr>

code/ui/blocks/src/components/ArgsTable/ArgsTable.stories.tsx

@@ -2,7 +2,6 @@ import React from 'react';
 import { action } from '@storybook/addon-actions';
 import { styled } from '@storybook/theming';
 import { ArgsTable, ArgsTableError } from './ArgsTable';
-import { NoControlsWarning } from './NoControlsWarning';
 import * as ArgRow from './ArgRow.stories';
 
 export default {
@@ -58,15 +57,14 @@ export const InAddonPanel = {
   decorators: [(storyFn: any) => <AddonPanelLayout>{storyFn()}</AddonPanelLayout>],
 };
 
-export const InAddonPanelWithWarning = {
-  render: (args: any) => (
-    <>
-      <NoControlsWarning />
-      <ArgsTable {...args} />
-    </>
-  ),
-  // @ts-expect-error (not strict)
-  args: { ...InAddonPanel.args, updateArgs: null },
+export const InAddonPanelNoControls = {
+  render: (args: any) => <ArgsTable {...args} />,
+  args: {
+    rows: {
+      stringType: { ...stringType, control: false },
+      numberType: { ...numberType, control: false },
+    },
+  },
   decorators: InAddonPanel.decorators,
 };
 
@@ -141,8 +139,9 @@ export const Error = {
 };
 
 export const Empty = {
-  args: {
-    rows: {},
+  args: {},
+  parameters: {
+    layout: 'centered',
   },
 };