@wordpress/block-editor/build/components/use-moving-animation/index.cjs.map

Generic block editor.

{
  "version": 3,
  "sources": ["../../../src/components/use-moving-animation/index.js"],
  "sourcesContent": ["/**\n * External dependencies\n */\nimport { Controller } from '@react-spring/web';\n\n/**\n * WordPress dependencies\n */\nimport { useLayoutEffect, useMemo, useRef } from '@wordpress/element';\nimport { getScrollContainer } from '@wordpress/dom';\nimport { useSelect } from '@wordpress/data';\n\n/**\n * Internal dependencies\n */\nimport { store as blockEditorStore } from '../../store';\n\n/**\n * If the block count exceeds the threshold, we disable the reordering animation\n * to avoid laginess.\n */\nconst BLOCK_ANIMATION_THRESHOLD = 200;\n\nfunction getAbsolutePosition( element ) {\n\treturn {\n\t\ttop: element.offsetTop,\n\t\tleft: element.offsetLeft,\n\t};\n}\n\n/**\n * Hook used to compute the styles required to move a div into a new position.\n *\n * The way this animation works is the following:\n *  - It first renders the element as if there was no animation.\n *  - It takes a snapshot of the position of the block to use it\n *    as a destination point for the animation.\n *  - It restores the element to the previous position using a CSS transform\n *  - It uses the \"resetAnimation\" flag to reset the animation\n *    from the beginning in order to animate to the new destination point.\n *\n * @param {Object} $1                          Options\n * @param {*}      $1.triggerAnimationOnChange Variable used to trigger the animation if it changes.\n * @param {string} $1.clientId\n */\nfunction useMovingAnimation( { triggerAnimationOnChange, clientId } ) {\n\tconst ref = useRef();\n\tconst {\n\t\tisTyping,\n\t\tgetGlobalBlockCount,\n\t\tisBlockSelected,\n\t\tisFirstMultiSelectedBlock,\n\t\tisBlockMultiSelected,\n\t\tisAncestorMultiSelected,\n\t\tisDraggingBlocks,\n\t} = useSelect( blockEditorStore );\n\n\t// Whenever the trigger changes, we need to take a snapshot of the current\n\t// position of the block to use it as a destination point for the animation.\n\tconst { previous, prevRect } = useMemo(\n\t\t() => ( {\n\t\t\tprevious: ref.current && getAbsolutePosition( ref.current ),\n\t\t\tprevRect: ref.current && ref.current.getBoundingClientRect(),\n\t\t} ),\n\t\t[ triggerAnimationOnChange ]\n\t);\n\n\tuseLayoutEffect( () => {\n\t\tif ( ! previous || ! ref.current ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst scrollContainer = getScrollContainer( ref.current );\n\t\tconst isSelected = isBlockSelected( clientId );\n\t\tconst adjustScrolling =\n\t\t\tisSelected || isFirstMultiSelectedBlock( clientId );\n\t\tconst isDragging = isDraggingBlocks();\n\n\t\tfunction preserveScrollPosition() {\n\t\t\t// The user already scrolled when dragging blocks.\n\t\t\tif ( isDragging ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( adjustScrolling && prevRect ) {\n\t\t\t\tconst blockRect = ref.current.getBoundingClientRect();\n\t\t\t\tconst diff = blockRect.top - prevRect.top;\n\n\t\t\t\tif ( diff ) {\n\t\t\t\t\tscrollContainer.scrollTop += diff;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// We disable the animation if the user has a preference for reduced\n\t\t// motion, if the user is typing (insertion by Enter), or if the block\n\t\t// count exceeds the threshold (insertion caused all the blocks that\n\t\t// follow to animate).\n\t\t// To do: consider enabling the _moving_ animation even for large\n\t\t// posts, while only disabling the _insertion_ animation?\n\t\tconst disableAnimation =\n\t\t\twindow.matchMedia( '(prefers-reduced-motion: reduce)' ).matches ||\n\t\t\tisTyping() ||\n\t\t\tgetGlobalBlockCount() > BLOCK_ANIMATION_THRESHOLD;\n\n\t\tif ( disableAnimation ) {\n\t\t\t// If the animation is disabled and the scroll needs to be adjusted,\n\t\t\t// just move directly to the final scroll position.\n\t\t\tpreserveScrollPosition();\n\t\t\treturn;\n\t\t}\n\n\t\tconst isPartOfSelection =\n\t\t\tisSelected ||\n\t\t\tisBlockMultiSelected( clientId ) ||\n\t\t\tisAncestorMultiSelected( clientId );\n\n\t\t// The user already dragged the blocks to the new position, so don't\n\t\t// animate the dragged blocks.\n\t\tif ( isPartOfSelection && isDragging ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure the other blocks move under the selected block(s).\n\t\tconst zIndex = isPartOfSelection ? '1' : '';\n\n\t\tconst controller = new Controller( {\n\t\t\tx: 0,\n\t\t\ty: 0,\n\t\t\tconfig: { mass: 5, tension: 2000, friction: 200 },\n\t\t\tonChange( { value } ) {\n\t\t\t\tif ( ! ref.current ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\tlet { x, y } = value;\n\t\t\t\tx = Math.round( x );\n\t\t\t\ty = Math.round( y );\n\t\t\t\tconst finishedMoving = x === 0 && y === 0;\n\t\t\t\tref.current.style.transformOrigin = 'center center';\n\t\t\t\tref.current.style.transform = finishedMoving\n\t\t\t\t\t? null // Set to `null` to explicitly remove the transform.\n\t\t\t\t\t: `translate3d(${ x }px,${ y }px,0)`;\n\t\t\t\tref.current.style.zIndex = zIndex;\n\t\t\t\tpreserveScrollPosition();\n\t\t\t},\n\t\t} );\n\n\t\tref.current.style.transform = undefined;\n\t\tconst destination = getAbsolutePosition( ref.current );\n\n\t\tconst x = Math.round( previous.left - destination.left );\n\t\tconst y = Math.round( previous.top - destination.top );\n\n\t\tcontroller.start( { x: 0, y: 0, from: { x, y } } );\n\n\t\treturn () => {\n\t\t\tcontroller.stop();\n\t\t\tcontroller.set( { x: 0, y: 0 } );\n\t\t};\n\t}, [\n\t\tprevious,\n\t\tprevRect,\n\t\tclientId,\n\t\tisTyping,\n\t\tgetGlobalBlockCount,\n\t\tisBlockSelected,\n\t\tisFirstMultiSelectedBlock,\n\t\tisBlockMultiSelected,\n\t\tisAncestorMultiSelected,\n\t\tisDraggingBlocks,\n\t] );\n\n\treturn ref;\n}\n\nexport default useMovingAnimation;\n"],
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  "names": ["blockEditorStore", "x", "y"]
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