feat: add useConfig hook to ConfigProvider (ant-design#40215)

* feat: add useConfig hook to ConfigProvider

* docs: format config-provide markdown

* doc: add available version

* test: add useConfig test

* docs: add debug

* chore: fix lint error

* fix: getter dead loop

* test: promote useConfig test coverage

* docs(ConfigProvider): update available version

components/config-provider/__tests__/useConfig.test.tsx

@@ -0,0 +1,63 @@
+import React from 'react';
+import ConfigProvider from '..';
+import Form from '../../form';
+import { render } from '../../../tests/utils';
+import { resetWarned } from '../../_util/warning';
+
+describe('ConfigProvider.useConfig', () => {
+  it('useConfig - componentSize', () => {
+    let size;
+
+    const App: React.FC = () => {
+      const { componentSize } = ConfigProvider.useConfig();
+      size = componentSize;
+
+      return null;
+    };
+
+    render(
+      <ConfigProvider componentSize='small'>
+        <App />
+      </ConfigProvider>,
+    );
+
+    expect(size).toBe('small');
+  });
+
+  it('useConfig - componentDisabled', () => {
+    let disabled;
+    const App: React.FC = () => {
+      const { componentDisabled } = ConfigProvider.useConfig();
+      disabled = componentDisabled;
+      return null;
+    };
+
+    render(
+      <Form disabled>
+        <App />
+      </Form>,
+    );
+
+    expect(disabled).toBe(true);
+  });
+
+  it('deprecated SizeContext', () => {
+    resetWarned();
+
+    const App: React.FC = () => {
+      const { SizeContext } = ConfigProvider;
+      const ctx = React.useContext(SizeContext);
+
+      return <div>{ctx}</div>;
+    };
+
+    const errSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
+
+    render(<App />);
+
+    expect(errSpy).toHaveBeenCalledWith(
+      'Warning: [antd: ConfigProvider] ConfigProvider.SizeContext is deprecated. Please use `ConfigProvider.useConfig().componentSize` instead.',
+    );
+    errSpy.mockRestore();
+  });
+});

components/config-provider/demo/useConfig.md

@@ -0,0 +1,7 @@
+## zh-CN
+
+获取父级 `Provider` 的值。如 `DisabledContextProvider`、`SizeContextProvider`。
+
+## en-US
+
+Get the value of the parent `Provider`. Such as `DisabledContextProvider`, `SizeContextProvider`.

components/config-provider/demo/useConfig.tsx

@@ -0,0 +1,53 @@
+import React, { useState } from 'react';
+import { Checkbox, ConfigProvider, Divider, Form, Input, Radio, Space } from 'antd';
+import type { SizeType } from 'antd/es/config-provider/SizeContext';
+
+const ConfigDisplay = () => {
+  const { componentDisabled, componentSize } = ConfigProvider.useConfig();
+
+  return (
+    <>
+      <Form.Item label="componentSize value">
+        <Input value={componentSize} />
+      </Form.Item>
+      <Form.Item label="componentDisabled value">
+        <Input value={String(componentDisabled)} disabled={componentDisabled} />
+      </Form.Item>
+    </>
+  );
+};
+
+const App: React.FC = () => {
+  const [componentSize, setComponentSize] = useState<SizeType>('small');
+  const [disabled, setDisabled] = useState<boolean>(true);
+
+  return (
+    <div>
+      <Space>
+        <Radio.Group
+          value={componentSize}
+          onChange={(e) => {
+            setComponentSize(e.target.value);
+          }}
+        >
+          <Radio.Button value="small">Small</Radio.Button>
+          <Radio.Button value="middle">Middle</Radio.Button>
+          <Radio.Button value="large">Large</Radio.Button>
+        </Radio.Group>
+        <Checkbox checked={disabled} onChange={(e) => setDisabled(e.target.checked)}>
+          Form disabled
+        </Checkbox>
+      </Space>
+      <Divider />
+      <ConfigProvider componentSize={componentSize}>
+        <div className="example">
+          <Form disabled={disabled}>
+            <ConfigDisplay />
+          </Form>
+        </div>
+      </ConfigProvider>
+    </div>
+  );
+};
+
+export default App;

components/config-provider/hooks/useConfig.ts

@@ -0,0 +1,15 @@
+import { useContext } from 'react';
+import DisabledContext from '../DisabledContext';
+import SizeContext from '../SizeContext';
+
+function useConfig() {
+  const componentDisabled = useContext(DisabledContext);
+  const componentSize = useContext(SizeContext);
+
+  return {
+    componentDisabled,
+    componentSize,
+  };
+}
+
+export default useConfig;

components/config-provider/index.en-US.md

@@ -43,6 +43,7 @@ Some components use dynamic style to support wave effect. You can config `csp` p
 <code src="./demo/size.tsx">Component size</code>
 <code src="./demo/theme.tsx">Theme</code>
 <code src="./demo/prefixCls.tsx" debug>prefixCls</code>
+<code src="./demo/useConfig.tsx" debug>useConfig</code>
 
 ## API
 
@@ -78,6 +79,22 @@ ConfigProvider.config({
 });
 ```
 
+### ConfigProvider.useConfig() `5.3.0+`
+
+Available since `5.2.0`. Get the value of the parent `Provider`. Such as `DisabledContextProvider`, `SizeContextProvider`.
+
+```jsx
+const {
+  componentDisabled, // 5.3.0+
+  componentSize, // 5.3.0+
+} = ConfigProvider.useConfig();
+```
+
+| 返回值 | 说明 | 类型 | 默认值 | 版本 |
+| --- | --- | --- | --- | --- |
+| componentDisabled | antd component disabled state | boolean | - | 5.3.0 |
+| componentSize | antd component size state | `small` \| `middle` \| `large` | - | 5.3.0 |
+
 ## FAQ
 
 #### How to contribute a new language?

components/config-provider/index.tsx

@@ -22,6 +22,8 @@ import useTheme from './hooks/useTheme';
 import type { SizeType } from './SizeContext';
 import SizeContext, { SizeContextProvider } from './SizeContext';
 import useStyle from './style';
+import useConfig from './hooks/useConfig';
+import warning from '../_util/warning';
 
 export {
   type RenderEmptyHandler,
@@ -311,8 +313,10 @@ const ProviderChildren: React.FC<ProviderChildrenProps> = (props) => {
 const ConfigProvider: React.FC<ConfigProviderProps> & {
   /** @private internal Usage. do not use in your production */
   ConfigContext: typeof ConfigContext;
+  /** @deprecated Please use `ConfigProvider.useConfig().componentSize` instead */
   SizeContext: typeof SizeContext;
   config: typeof setGlobalConfig;
+  useConfig: typeof useConfig;
 } = (props) => (
   <LocaleReceiver>
     {(_, __, legacyLocale) => (
@@ -328,6 +332,18 @@ const ConfigProvider: React.FC<ConfigProviderProps> & {
 ConfigProvider.ConfigContext = ConfigContext;
 ConfigProvider.SizeContext = SizeContext;
 ConfigProvider.config = setGlobalConfig;
+ConfigProvider.useConfig = useConfig;
+
+Object.defineProperty(ConfigProvider, 'SizeContext', {
+  get: () => {
+    warning(
+      false,
+      'ConfigProvider',
+      'ConfigProvider.SizeContext is deprecated. Please use `ConfigProvider.useConfig().componentSize` instead.',
+    );
+    return SizeContext;
+  },
+});
 
 if (process.env.NODE_ENV !== 'production') {
   ConfigProvider.displayName = 'ConfigProvider';

components/config-provider/index.zh-CN.md

@@ -44,6 +44,7 @@ export default Demo;
 <code src="./demo/size.tsx">组件尺寸</code>
 <code src="./demo/theme.tsx">主题</code>
 <code src="./demo/prefixCls.tsx" debug>前缀</code>
+<code src="./demo/useConfig.tsx" debug>useConfig</code>
 
 ## API
 
@@ -79,6 +80,23 @@ ConfigProvider.config({
 });
 ```
 
+### ConfigProvider.useConfig() `5.3.0+`
+
+`5.2.0` 版本后可用。获取父级 `Provider` 的值。如 `DisabledContextProvider`、`SizeContextProvider`。
+
+```jsx
+const {
+  componentDisabled, // 5.3.0+
+  componentSize, // 5.3.0+
+} = ConfigProvider.useConfig();
+```
+
+<!-- prettier-ignore -->
+| 返回值 | 说明 | 类型 | 默认值 | 版本 |
+| --- | --- | --- | --- | --- |
+| componentDisabled | antd 组件禁用状态 | boolean | - | 5.3.0 |
+| componentSize | antd 组件大小状态 | `small` \| `middle` \| `large` | - | 5.3.0 |
+
 ## FAQ
 
 #### 如何增加一个新的语言包？