[AppProvider] Update context

UNRELEASED-V4.md

@@ -24,6 +24,7 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 
 ### Code quality
 
+- Updated all our context files to export react context rather than a provider and consumer ([#1459](https://github.com/Shopify/polaris-react/pull/1459))
 - Upgraded the `Autocomplete` component from legacy context API to use createContext ([#1403](https://github.com/Shopify/polaris-react/pull/1403))
 - Updated `ThemeProvider` to use the new context api ([#1396](https://github.com/Shopify/polaris-react/pull/1396))
 - Updated `AppProvider` to no longer use `componentWillReceiveProps`([#1255](https://github.com/Shopify/polaris-react/pull/1255))

src/components/AppProvider/AppProvider.tsx

@@ -5,14 +5,11 @@ import {
   ScrollLockManager,
   createAppProviderContext,
 } from './utilities';
-import {
-  AppProviderProps,
-  Context,
-  polarisAppProviderContextTypes,
-} from './types';
+import AppProviderContext, {AppProviderContextType} from './context';
+import {AppProviderProps} from './types';
 
 interface State {
-  polaris: Context;
+  context: AppProviderContextType;
 }
 
 // The script in the styleguide that generates the Props Explorer data expects
@@ -22,10 +19,8 @@ interface State {
 interface Props extends AppProviderProps {}
 
 export default class AppProvider extends React.Component<Props, State> {
-  static childContextTypes = polarisAppProviderContextTypes;
   private stickyManager: StickyManager;
   private scrollLockManager: ScrollLockManager;
-  private subscriptions: {(): void}[] = [];
 
   constructor(props: Props) {
     super(props);
@@ -34,12 +29,10 @@ export default class AppProvider extends React.Component<Props, State> {
     const {theme, children, ...rest} = this.props;
 
     this.state = {
-      polaris: createAppProviderContext({
+      context: createAppProviderContext({
         ...rest,
         stickyManager: this.stickyManager,
         scrollLockManager: this.scrollLockManager,
-        subscribe: this.subscribe,
-        unsubscribe: this.unsubscribe,
       }),
     };
   }
@@ -71,41 +64,27 @@ export default class AppProvider extends React.Component<Props, State> {
 
     // eslint-disable-next-line react/no-did-update-set-state
     this.setState({
-      polaris: createAppProviderContext({
+      context: createAppProviderContext({
         i18n,
         linkComponent,
         apiKey,
         shopOrigin,
         forceRedirect,
         stickyManager: this.stickyManager,
-        subscribe: this.subscribe,
-        unsubscribe: this.unsubscribe,
       }),
     });
-
-    this.subscriptions.forEach((subscriberCallback) => subscriberCallback());
-  }
-
-  getChildContext(): Context {
-    return this.state.polaris;
   }
 
   render() {
-    const {theme = {logo: null}} = this.props;
+    const {theme = {logo: null}, children} = this.props;
+    const {context} = this.state;
+
     return (
-      <ThemeProvider theme={theme}>
-        {React.Children.only(this.props.children)}
-      </ThemeProvider>
+      <AppProviderContext.Provider value={context}>
+        <ThemeProvider theme={theme}>
+          {React.Children.only(children)}
+        </ThemeProvider>
+      </AppProviderContext.Provider>
     );
   }
-
-  subscribe = (callback: () => void) => {
-    this.subscriptions.push(callback);
-  };
-
-  unsubscribe = (callback: () => void) => {
-    this.subscriptions = this.subscriptions.filter(
-      (subscription) => subscription !== callback,
-    );
-  };
 }

src/components/AppProvider/context.tsx

@@ -0,0 +1,18 @@
+import * as React from 'react';
+import {ClientApplication} from '@shopify/app-bridge';
+import createPolarisContext from './utilities/createPolarisContext';
+import {Intl, Link, StickyManager, ScrollLockManager} from './utilities';
+
+export interface AppProviderContextType {
+  intl: Intl;
+  link: Link;
+  stickyManager: StickyManager;
+  scrollLockManager: ScrollLockManager;
+  appBridge?: ClientApplication<{}>;
+}
+
+const AppProviderContext = React.createContext<AppProviderContextType>(
+  createPolarisContext(),
+);
+
+export default AppProviderContext;

src/components/AppProvider/index.ts

@@ -7,16 +7,12 @@ export {
   withAppProvider,
   createAppProviderContext,
   createPolarisContext,
-  withSticky,
   WithAppProviderProps,
   TranslationDictionary,
   PrimitiveReplacementDictionary,
   ComplexReplacementDictionary,
   CreateAppProviderContext,
 } from './utilities';
-export {
-  AppProviderProps as Props,
-  Context,
-  polarisAppProviderContextTypes,
-} from './types';
+export {AppProviderProps as Props} from './types';
+export {default as AppProviderContext, AppProviderContextType} from './context';
 export {default} from './AppProvider';

src/components/AppProvider/tests/AppProvider.test.tsx

@@ -1,33 +1,28 @@
 import * as React from 'react';
-import {mount} from 'enzyme';
-import {polarisAppProviderContextTypes} from '../types';
+import AppProviderContext from '../context';
 import AppProvider from '../AppProvider';
+import {mountWithAppProvider} from '../../../test-utilities';
 
 describe('<AppProvider />', () => {
   it('updates polaris context when props change', () => {
-    const CustomLinkComponent = () => {
-      return <a href="test">Custom Link Component</a>;
-    };
-
-    // eslint-disable-next-line react/prefer-stateless-function
-    class Child extends React.Component {
-      static contextTypes = polarisAppProviderContextTypes;
-
-      render() {
-        return <div />;
-      }
-    }
+    const Child: React.SFC<{}> = (_props) => (
+      <AppProviderContext.Consumer>
+        {({link: {linkComponent}}) =>
+          linkComponent ? <div id="child" /> : null
+        }
+      </AppProviderContext.Consumer>
+    );
+    const LinkComponent = () => <div />;
 
-    const wrapper = mount(
+    const wrapper = mountWithAppProvider(
       <AppProvider>
         <Child />
       </AppProvider>,
     );
 
-    wrapper.setProps({linkComponent: CustomLinkComponent});
-
-    expect(
-      wrapper.find(Child).instance().context.polaris.link.linkComponent,
-    ).toBe(CustomLinkComponent);
+    expect(wrapper.find('#child')).toHaveLength(0);
+    wrapper.setProps({linkComponent: LinkComponent});
+    wrapper.update();
+    expect(wrapper.find('#child')).toHaveLength(1);
   });
 });

src/components/AppProvider/types.ts

@@ -1,15 +1,6 @@
-import {ClientApplication} from '@shopify/app-bridge';
-import {ValidationMap} from 'react';
-import * as PropTypes from 'prop-types';
 import {LinkLikeComponent} from '../UnstyledLink';
-import {Theme, THEME_CONTEXT_TYPES as polarisTheme} from '../ThemeProvider';
-import {
-  Intl,
-  Link,
-  StickyManager,
-  ScrollLockManager,
-  TranslationDictionary,
-} from './utilities';
+import {Theme} from '../ThemeProvider';
+import {TranslationDictionary} from './utilities';
 
 export interface AppProviderProps {
   /** A locale object or array of locale objects that overrides default translations */
@@ -29,20 +20,3 @@ export interface AppProviderProps {
   /** Custom logos and colors provided to select components */
   theme?: Theme;
 }
-
-export interface Context {
-  polaris: {
-    intl: Intl;
-    link: Link;
-    stickyManager: StickyManager;
-    scrollLockManager: ScrollLockManager;
-    subscribe?(callback: () => void): void;
-    unsubscribe?(callback: () => void): void;
-    appBridge?: ClientApplication<{}>;
-  };
-}
-
-export const polarisAppProviderContextTypes: ValidationMap<any> = {
-  polaris: PropTypes.any,
-  ...polarisTheme,
-};

src/components/AppProvider/utilities/withSticky/StickyManager.ts → src/components/AppProvider/utilities/StickyManager/StickyManager.ts

@@ -14,7 +14,7 @@ export interface StickyItem {
   /** Placeholder element */
   placeHolderNode: HTMLElement;
   /** Element outlining the fixed position boundaries */
-  boundingElement: HTMLElement | null;
+  boundingElement?: HTMLElement | null;
   /** Offset vertical spacing from the top of the scrollable container */
   offset: boolean;
   /** Should the element remain in a fixed position when the layout is stacked (smaller screens)  */

src/components/AppProvider/utilities/StickyManager/index.ts

@@ -0,0 +1,3 @@
+import StickyManager from './StickyManager';
+
+export default StickyManager;

src/components/AppProvider/utilities/createAppProviderContext/createAppProviderContext.ts

@@ -1,11 +1,11 @@
-import {noop} from '@shopify/javascript-utilities/other';
 import createApp, {
   getShopOrigin,
   LifecycleHook,
   DispatchActionHook,
 } from '@shopify/app-bridge';
-import {AppProviderProps, Context} from '../../types';
-import {StickyManager} from '../withSticky';
+import {AppProviderContextType} from '../../context';
+import {AppProviderProps} from '../../types';
+import StickyManager from '../StickyManager';
 import ScrollLockManager from '../ScrollLockManager';
 import Intl from '../Intl';
 import Link from '../Link';
@@ -14,8 +14,6 @@ import {polarisVersion} from '../../../../configure';
 export interface CreateAppProviderContext extends AppProviderProps {
   stickyManager?: StickyManager;
   scrollLockManager?: ScrollLockManager;
-  subscribe?(callback: () => void): void;
-  unsubscribe?(callback: () => void): void;
 }
 
 export default function createAppProviderContext({
@@ -26,9 +24,7 @@ export default function createAppProviderContext({
   forceRedirect,
   stickyManager,
   scrollLockManager,
-  subscribe = noop,
-  unsubscribe = noop,
-}: CreateAppProviderContext = {}): Context {
+}: CreateAppProviderContext = {}): AppProviderContextType {
   const intl = new Intl(i18n);
   const link = new Link(linkComponent);
   const appBridge = apiKey
@@ -44,15 +40,11 @@ export default function createAppProviderContext({
   }
 
   return {
-    polaris: {
-      intl,
-      link,
-      stickyManager: stickyManager || new StickyManager(),
-      scrollLockManager: scrollLockManager || new ScrollLockManager(),
-      subscribe,
-      unsubscribe,
-      appBridge,
-    },
+    intl,
+    link,
+    stickyManager: stickyManager || new StickyManager(),
+    scrollLockManager: scrollLockManager || new ScrollLockManager(),
+    appBridge,
   };
 }
 

src/components/AppProvider/utilities/createAppProviderContext/tests/createAppProviderContext.test.tsx

@@ -1,11 +1,10 @@
 import * as React from 'react';
 import * as appBridge from '@shopify/app-bridge';
-import {noop} from '@shopify/javascript-utilities/other';
 import * as targets from '@shopify/react-utilities/target';
 import createAppProviderContext, {
   setClientInterfaceHook,
 } from '../createAppProviderContext';
-import {StickyManager} from '../../withSticky';
+import StickyManager from '../../StickyManager';
 import ScrollLockManager from '../../ScrollLockManager';
 
 jest.mock('../../Intl', () => ({
@@ -41,15 +40,11 @@ describe('createAppProviderContext()', () => {
     const context = createAppProviderContext();
 
     expect(context).toMatchObject({
-      polaris: {
-        intl: expect.any(Intl),
-        link: expect.any(Link),
-        stickyManager: expect.any(StickyManager),
-        scrollLockManager: expect.any(ScrollLockManager),
-        subscribe: noop,
-        unsubscribe: noop,
-        appBridge: undefined,
-      },
+      intl: expect.any(Intl),
+      link: expect.any(Link),
+      stickyManager: expect.any(StickyManager),
+      scrollLockManager: expect.any(ScrollLockManager),
+      appBridge: undefined,
     });
   });
 
@@ -86,24 +81,20 @@ describe('createAppProviderContext()', () => {
     });
 
     expect(context).toMatchObject({
-      polaris: {
-        intl: expect.any(Intl),
-        link: expect.any(Link),
-        stickyManager: expect.any(StickyManager),
-        scrollLockManager: expect.any(ScrollLockManager),
-        subscribe: noop,
-        unsubscribe: noop,
-        appBridge: {
-          apiKey,
-          forceRedirect: undefined,
-          shopOrigin: undefined,
-          dispatch: expect.any(Function),
-          localOrigin: '',
-          featuresAvailable: expect.any(Function),
-          getState: expect.any(Function),
-          subscribe: expect.any(Function),
-          error: expect.any(Function),
-        },
+      intl: expect.any(Intl),
+      link: expect.any(Link),
+      stickyManager: expect.any(StickyManager),
+      scrollLockManager: expect.any(ScrollLockManager),
+      appBridge: {
+        apiKey,
+        forceRedirect: undefined,
+        shopOrigin: undefined,
+        dispatch: expect.any(Function),
+        localOrigin: '',
+        featuresAvailable: expect.any(Function),
+        getState: expect.any(Function),
+        subscribe: expect.any(Function),
+        error: expect.any(Function),
       },
     });
 

src/components/AppProvider/utilities/createPolarisContext/createPolarisContext.ts

@@ -1,10 +1,10 @@
 import {PolarisContext} from '../../../types';
 import {
   createThemeContext,
-  ThemeContext as CreateThemeContext,
+  ThemeProviderContextType as CreateThemeContext,
 } from '../../../ThemeProvider';
 import {AppProviderProps} from '../../types';
-import {StickyManager} from '../withSticky';
+import StickyManager from '../StickyManager';
 import createAppProviderContext, {
   CreateAppProviderContext,
 } from '../createAppProviderContext';
@@ -42,5 +42,5 @@ export default function createPolarisContext(
     ? createThemeContext(themeContext)
     : createThemeContext();
 
-  return {...appProvider, ...theme};
+  return {...appProvider, theme};
 }