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Implement the G2 Mover interactions (#20056)
Co-authored-by: Joen Asmussen <[email protected]> Co-authored-by: Riad Benguella <[email protected]>
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135 changes: 135 additions & 0 deletions
135
packages/block-editor/src/components/block-toolbar/utils.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| /** | ||
| * WordPress dependencies | ||
| */ | ||
| import { useState, useRef, useEffect, useCallback } from '@wordpress/element'; | ||
|
|
||
| const { clearTimeout, setTimeout } = window; | ||
|
|
||
| /** | ||
| * Hook that creates a showMover state, as well as debounced show/hide callbacks | ||
| */ | ||
| export function useDebouncedShowMovers( { | ||
| ref, | ||
| isFocused, | ||
| debounceTimeout = 500, | ||
| } ) { | ||
| const [ showMovers, setShowMovers ] = useState( false ); | ||
| const timeoutRef = useRef(); | ||
|
|
||
| const getIsHovered = () => { | ||
| return ref?.current && ref.current.matches( ':hover' ); | ||
| }; | ||
|
|
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| const shouldHideMovers = () => { | ||
| const isHovered = getIsHovered(); | ||
|
|
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| return ! isFocused && ! isHovered; | ||
| }; | ||
|
|
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| const debouncedShowMovers = useCallback( | ||
| ( event ) => { | ||
| if ( event ) { | ||
| event.stopPropagation(); | ||
| } | ||
|
|
||
| const timeout = timeoutRef.current; | ||
|
|
||
| if ( timeout && clearTimeout ) { | ||
| clearTimeout( timeout ); | ||
| } | ||
| if ( ! showMovers ) { | ||
| setShowMovers( true ); | ||
| } | ||
| }, | ||
| [ showMovers ] | ||
| ); | ||
|
|
||
| const debouncedHideMovers = useCallback( | ||
| ( event ) => { | ||
| if ( event ) { | ||
| event.stopPropagation(); | ||
| } | ||
|
|
||
| timeoutRef.current = setTimeout( () => { | ||
| if ( shouldHideMovers() ) { | ||
| setShowMovers( false ); | ||
| } | ||
| }, debounceTimeout ); | ||
| }, | ||
| [ isFocused ] | ||
| ); | ||
|
|
||
| return { | ||
| showMovers, | ||
| debouncedShowMovers, | ||
| debouncedHideMovers, | ||
| }; | ||
| } | ||
|
|
||
| /** | ||
| * Hook that provides a showMovers state and gesture events for DOM elements | ||
| * that interact with the showMovers state. | ||
| */ | ||
| export function useShowMoversGestures( { ref, debounceTimeout = 500 } ) { | ||
| const [ isFocused, setIsFocused ] = useState( false ); | ||
| const { | ||
| showMovers, | ||
| debouncedShowMovers, | ||
| debouncedHideMovers, | ||
| } = useDebouncedShowMovers( { ref, debounceTimeout, isFocused } ); | ||
|
|
||
| const registerRef = useRef( false ); | ||
|
|
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| const isFocusedWithin = () => { | ||
| return ref && ref.current.contains( document.activeElement ); | ||
| }; | ||
|
|
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| useEffect( () => { | ||
| const node = ref.current; | ||
|
|
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| const handleOnFocus = () => { | ||
| if ( isFocusedWithin() ) { | ||
| setIsFocused( true ); | ||
| debouncedShowMovers(); | ||
| } | ||
| }; | ||
|
|
||
| const handleOnBlur = () => { | ||
| if ( ! isFocusedWithin() ) { | ||
| setIsFocused( false ); | ||
| debouncedHideMovers(); | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * Events are added via DOM events (vs. React synthetic events), | ||
| * as the child React components swallow mouse events. | ||
| */ | ||
| if ( node && ! registerRef.current ) { | ||
| node.addEventListener( 'focus', handleOnFocus, true ); | ||
| node.addEventListener( 'blur', handleOnBlur, true ); | ||
| registerRef.current = true; | ||
| } | ||
|
|
||
| return () => { | ||
| if ( node ) { | ||
| node.removeEventListener( 'focus', handleOnFocus ); | ||
| node.removeEventListener( 'blur', handleOnBlur ); | ||
| } | ||
| }; | ||
| }, [ | ||
| ref, | ||
| registerRef, | ||
| setIsFocused, | ||
| debouncedShowMovers, | ||
| debouncedHideMovers, | ||
| ] ); | ||
|
|
||
| return { | ||
| showMovers, | ||
| gestures: { | ||
| onMouseMove: debouncedShowMovers, | ||
| onMouseLeave: debouncedHideMovers, | ||
| }, | ||
| }; | ||
| } |
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