Prevent welcome tour keyboard navigation from hijacking left right ke…

…ys on the editor (#39683)

projects/packages/jetpack-mu-wpcom/changelog/prevent-welcome-tour-keyboard-navigation-from-hijacking-left-right-keys-on-the-editor

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Prevent welcome tour keyboard navigation from hijacking left right keys on the editor

projects/packages/jetpack-mu-wpcom/src/common/tour-kit/components/keyboard-navigation.tsx

@@ -34,6 +34,7 @@ const KeyboardNavigation: React.FunctionComponent< Props > = ( {
 			onEscape: onMinimize,
 			onArrowRight: onNextStepProgression,
 			onArrowLeft: onPreviousStepProgression,
+			tourContainerRef,
 		} );
 		useFocusTrap( tourContainerRef );
 
@@ -44,7 +45,7 @@ const KeyboardNavigation: React.FunctionComponent< Props > = ( {
 	 * Minimize Tour Nav
 	 */
 	function MinimizedTourNav() {
-		useKeydownHandler( { onEscape: onDismiss( 'esc-key-minimized' ) } );
+		useKeydownHandler( { onEscape: onDismiss( 'esc-key-minimized' ), tourContainerRef } );
 
 		return null;
 	}

projects/packages/jetpack-mu-wpcom/src/common/tour-kit/components/tour-kit-frame.tsx

@@ -247,6 +247,7 @@ const TourKitFrame: React.FunctionComponent< Props > = ( { config } ) => {
 				<div
 					className="tour-kit-frame__container"
 					ref={ setPopperElement }
+					tabIndex={ -1 }
 					{ ...( stepRepositionProps as React.HTMLAttributes< HTMLDivElement > ) }
 				>
 					{ showArrowIndicator() && (

projects/packages/jetpack-mu-wpcom/src/common/tour-kit/hooks/use-keydown-handler.ts

@@ -8,31 +8,64 @@ interface Props {
 	onEscape?: () => void;
 	onArrowRight?: () => void;
 	onArrowLeft?: () => void;
+	tourContainerRef: React.MutableRefObject< null | HTMLElement >;
 }
 
 /**
  * A hook the applies the respective callbacks in response to keydown events.
  */
-const useKeydownHandler = ( { onEscape, onArrowRight, onArrowLeft }: Props ): void => {
+const useKeydownHandler = ( {
+	onEscape,
+	onArrowRight,
+	onArrowLeft,
+	tourContainerRef,
+}: Props ): void => {
+	const isActiveElementOutsideTourContainer = useCallback( (): boolean => {
+		return !! (
+			tourContainerRef.current &&
+			! tourContainerRef.current.contains( tourContainerRef.current.ownerDocument.activeElement )
+		);
+	}, [ tourContainerRef ] );
+
+	const focusTourContainer = useCallback( () => {
+		(
+			tourContainerRef.current?.querySelector( '.tour-kit-frame__container' ) as HTMLElement
+		 )?.focus();
+	}, [ tourContainerRef ] );
+
 	const handleKeydown = useCallback(
 		( event: KeyboardEvent ) => {
 			let handled = false;
 
 			switch ( event.key ) {
 				case 'Escape':
 					if ( onEscape ) {
+						if ( isActiveElementOutsideTourContainer() ) {
+							return;
+						}
+
 						onEscape();
+						// focus the container after minimizing so the user can dismiss it
+						focusTourContainer();
 						handled = true;
 					}
 					break;
 				case 'ArrowRight':
 					if ( onArrowRight ) {
+						if ( isActiveElementOutsideTourContainer() ) {
+							return;
+						}
+
 						onArrowRight();
 						handled = true;
 					}
 					break;
 				case 'ArrowLeft':
 					if ( onArrowLeft ) {
+						if ( isActiveElementOutsideTourContainer() ) {
+							return;
+						}
+
 						onArrowLeft();
 						handled = true;
 					}
@@ -46,16 +79,40 @@ const useKeydownHandler = ( { onEscape, onArrowRight, onArrowLeft }: Props ): vo
 				event.stopPropagation();
 			}
 		},
-		[ onEscape, onArrowRight, onArrowLeft ]
+		[ onEscape, onArrowRight, onArrowLeft, isActiveElementOutsideTourContainer, focusTourContainer ]
+	);
+
+	// when clicking on the container, if the target is not a focusable element,
+	// force focus on the first children so keyboard navigation works
+	const handleTourContainerClick = useCallback(
+		( event: MouseEvent ) => {
+			const isFocusable = ( element: HTMLElement ) => {
+				const focusableElements = [ 'A', 'INPUT', 'BUTTON', 'TEXTAREA', 'SELECT' ];
+
+				// Check if the element is focusable by its tag or has a tabindex >= 0
+				return focusableElements.includes( element?.tagName ) || element?.tabIndex >= 0;
+			};
+
+			if ( isFocusable( event.target as HTMLElement ) ) {
+				return;
+			}
+
+			focusTourContainer();
+		},
+		[ focusTourContainer ]
 	);
 
 	useEffect( () => {
+		const tourContainer = tourContainerRef.current;
+
 		document.addEventListener( 'keydown', handleKeydown );
+		tourContainer?.addEventListener( 'click', handleTourContainerClick );
 
 		return () => {
 			document.removeEventListener( 'keydown', handleKeydown );
+			tourContainer?.removeEventListener( 'click', handleTourContainerClick );
 		};
-	}, [ handleKeydown ] );
+	}, [ handleKeydown, handleTourContainerClick, tourContainerRef ] );
 };
 
 export default useKeydownHandler;