Update SlotFillProvider to the new context API

packages/components/src/popover/index.js

@@ -2,7 +2,6 @@
  * External dependencies
  */
 import classnames from 'classnames';
-import { noop } from 'lodash';
 
 /**
  * WordPress dependencies
@@ -20,7 +19,7 @@ import withConstrainedTabbing from '../higher-order/with-constrained-tabbing';
 import PopoverDetectOutside from './detect-outside';
 import IconButton from '../icon-button';
 import ScrollLock from '../scroll-lock';
-import { Slot, Fill } from '../slot-fill';
+import { Slot, Fill, Consumer } from '../slot-fill';
 
 const FocusManaged = withConstrainedTabbing( withFocusReturn( ( { children } ) => children ) );
 
@@ -302,17 +301,24 @@ class Popover extends Component {
 			content = <FocusManaged>{ content }</FocusManaged>;
 		}
 
-		// In case there is no slot context in which to render, default to an
-		// in-place rendering.
-		const { getSlot } = this.context;
-		if ( getSlot && getSlot( SLOT_NAME ) ) {
-			content = <Fill name={ SLOT_NAME }>{ content }</Fill>;
-		}
-
-		return <span ref={ this.anchorNode }>
-			{ content }
-			{ isMobile && expandOnMobile && <ScrollLock /> }
-		</span>;
+		return (
+			<Consumer>
+				{ ( { getSlot } ) => {
+					// In case there is no slot context in which to render,
+					// default to an in-place rendering.
+					if ( getSlot && getSlot( SLOT_NAME ) ) {
+						content = <Fill name={ SLOT_NAME }>{ content }</Fill>;
+					}
+
+					return (
+						<span ref={ this.anchorNode }>
+							{ content }
+							{ isMobile && expandOnMobile && <ScrollLock /> }
+						</span>
+					);
+				} }
+			</Consumer>
+		);
 	}
 }
 
@@ -323,10 +329,6 @@ Popover.defaultProps = {
 
 const PopoverContainer = Popover;
 
-PopoverContainer.contextTypes = {
-	getSlot: noop,
-};
-
 PopoverContainer.Slot = () => <Slot bubblesVirtually name={ SLOT_NAME } />;
 
 export default PopoverContainer;

packages/components/src/slot-fill/provider.js → packages/components/src/slot-fill/context.js

@@ -1,12 +1,21 @@
 /**
  * External dependencies
  */
-import { pick, sortBy, forEach, without, noop } from 'lodash';
+import { sortBy, forEach, without } from 'lodash';
 
 /**
  * WordPress dependencies
  */
-import { Component } from '@wordpress/element';
+import { Component, createContext } from '@wordpress/element';
+
+const { Provider, Consumer } = createContext( {
+	registerSlot: () => {},
+	unregisterSlot: () => {},
+	registerFill: () => {},
+	unregisterFill: () => {},
+	getSlot: () => {},
+	getFills: () => {},
+} );
 
 class SlotFillProvider extends Component {
 	constructor() {
@@ -21,17 +30,14 @@ class SlotFillProvider extends Component {
 
 		this.slots = {};
 		this.fills = {};
-	}
-
-	getChildContext() {
-		return pick( this, [
-			'registerSlot',
-			'registerFill',
-			'unregisterSlot',
-			'unregisterFill',
-			'getSlot',
-			'getFills',
-		] );
+		this.state = {
+			registerSlot: this.registerSlot,
+			unregisterSlot: this.unregisterSlot,
+			registerFill: this.registerFill,
+			unregisterFill: this.unregisterFill,
+			getSlot: this.getSlot,
+			getFills: this.getFills,
+		};
 	}
 
 	registerSlot( name, slot ) {
@@ -94,17 +100,13 @@ class SlotFillProvider extends Component {
 	}
 
 	render() {
-		return this.props.children;
+		return (
+			<Provider value={ this.state }>
+				{ this.props.children }
+			</Provider>
+		);
 	}
 }
 
-SlotFillProvider.childContextTypes = {
-	registerSlot: noop,
-	unregisterSlot: noop,
-	registerFill: noop,
-	unregisterFill: noop,
-	getSlot: noop,
-	getFills: noop,
-};
-
 export default SlotFillProvider;
+export { Consumer };

packages/components/src/slot-fill/fill.js

@@ -1,23 +1,28 @@
 /**
  * External dependencies
  */
-import { noop, isFunction } from 'lodash';
+import { isFunction } from 'lodash';
 
 /**
  * WordPress dependencies
  */
 import { Component, createPortal } from '@wordpress/element';
 
+/**
+ * Internal dependencies
+ */
+import { Consumer } from './context';
+
 let occurrences = 0;
 
-class Fill extends Component {
+class FillComponent extends Component {
 	constructor() {
 		super( ...arguments );
 		this.occurrence = ++occurrences;
 	}
 
 	componentDidMount() {
-		const { registerFill = noop } = this.context;
+		const { registerFill } = this.props;
 
 		registerFill( this.props.name, this );
 	}
@@ -26,25 +31,21 @@ class Fill extends Component {
 		if ( ! this.occurrence ) {
 			this.occurrence = ++occurrences;
 		}
-		const { getSlot = noop } = this.context;
+		const { getSlot } = this.props;
 		const slot = getSlot( this.props.name );
 		if ( slot && ! slot.props.bubblesVirtually ) {
 			slot.forceUpdate();
 		}
 	}
 
 	componentWillUnmount() {
-		const { unregisterFill = noop } = this.context;
+		const { unregisterFill } = this.props;
 
 		unregisterFill( this.props.name, this );
 	}
 
 	componentDidUpdate( prevProps ) {
-		const { name } = this.props;
-		const {
-			unregisterFill = noop,
-			registerFill = noop,
-		} = this.context;
+		const { name, unregisterFill, registerFill } = this.props;
 
 		if ( prevProps.name !== name ) {
 			unregisterFill( prevProps.name, this );
@@ -57,8 +58,7 @@ class Fill extends Component {
 	}
 
 	render() {
-		const { getSlot = noop } = this.context;
-		const { name } = this.props;
+		const { name, getSlot } = this.props;
 		let { children } = this.props;
 		const slot = getSlot( name );
 
@@ -75,10 +75,17 @@ class Fill extends Component {
 	}
 }
 
-Fill.contextTypes = {
-	getSlot: noop,
-	registerFill: noop,
-	unregisterFill: noop,
-};
+const Fill = ( props ) => (
+	<Consumer>
+		{ ( { getSlot, registerFill, unregisterFill } ) => (
+			<FillComponent
+				{ ...props }
+				getSlot={ getSlot }
+				registerFill={ registerFill }
+				unregisterFill={ unregisterFill }
+			/>
+		) }
+	</Consumer>
+);
 
 export default Fill;

packages/components/src/slot-fill/index.js

@@ -3,11 +3,11 @@
  */
 import Slot from './slot';
 import Fill from './fill';
-import Provider from './provider';
+import Provider, { Consumer } from './context';
 
 export { Slot };
 export { Fill };
-export { Provider };
+export { Provider, Consumer };
 
 export function createSlotFill( name ) {
 	const FillComponent = ( props ) => <Fill name={ name } { ...props } />;

packages/components/src/slot-fill/slot.js

@@ -6,7 +6,6 @@ import {
 	isString,
 	map,
 	negate,
-	noop,
 } from 'lodash';
 
 /**
@@ -20,31 +19,32 @@ import {
 	isEmptyElement,
 } from '@wordpress/element';
 
-class Slot extends Component {
+/**
+ * Internal dependencies
+ */
+import { Consumer } from './context';
+
+class SlotComponent extends Component {
 	constructor() {
 		super( ...arguments );
 
 		this.bindNode = this.bindNode.bind( this );
 	}
 
 	componentDidMount() {
-		const { registerSlot = noop } = this.context;
+		const { registerSlot } = this.props;
 
 		registerSlot( this.props.name, this );
 	}
 
 	componentWillUnmount() {
-		const { unregisterSlot = noop } = this.context;
+		const { unregisterSlot } = this.props;
 
 		unregisterSlot( this.props.name, this );
 	}
 
 	componentDidUpdate( prevProps ) {
-		const { name } = this.props;
-		const {
-			unregisterSlot = noop,
-			registerSlot = noop,
-		} = this.context;
+		const { name, unregisterSlot, registerSlot } = this.props;
 
 		if ( prevProps.name !== name ) {
 			unregisterSlot( prevProps.name );
@@ -57,8 +57,7 @@ class Slot extends Component {
 	}
 
 	render() {
-		const { children, name, bubblesVirtually = false, fillProps = {} } = this.props;
-		const { getFills = noop } = this.context;
+		const { children, name, bubblesVirtually = false, fillProps = {}, getFills } = this.props;
 
 		if ( bubblesVirtually ) {
 			return <div ref={ this.bindNode } />;
@@ -91,10 +90,17 @@ class Slot extends Component {
 	}
 }
 
-Slot.contextTypes = {
-	registerSlot: noop,
-	unregisterSlot: noop,
-	getFills: noop,
-};
+const Slot = ( props ) => (
+	<Consumer>
+		{ ( { registerSlot, unregisterSlot, getFills } ) => (
+			<SlotComponent
+				{ ...props }
+				registerSlot={ registerSlot }
+				unregisterSlot={ unregisterSlot }
+				getFills={ getFills }
+			/>
+		) }
+	</Consumer>
+);
 
 export default Slot;

packages/components/src/slot-fill/test/slot.js

@@ -9,7 +9,7 @@ import ReactTestRenderer from 'react-test-renderer';
  */
 import Slot from '../slot';
 import Fill from '../fill';
-import Provider from '../provider';
+import Provider from '../context';
 
 /**
  * WordPress Dependencies