@wordpress/editor/build-module/components/post-revisions-preview/diff-markers.mjs.map

Enhanced block editor for WordPress posts.

{
  "version": 3,
  "sources": ["../../../src/components/post-revisions-preview/diff-markers.js"],
  "sourcesContent": ["/**\n * WordPress dependencies\n */\nimport {\n\tuseState,\n\tuseMemo,\n\tuseRef,\n\tuseCallback,\n\tuseEffect,\n} from '@wordpress/element';\nimport { useRefEffect, useMergeRefs } from '@wordpress/compose';\nimport { useSelect } from '@wordpress/data';\nimport {\n\tprivateApis as blockEditorPrivateApis,\n\tstore as blockEditorStore,\n} from '@wordpress/block-editor';\nimport { __ } from '@wordpress/i18n';\n\n/**\n * Internal dependencies\n */\nimport { unlock } from '../../lock-unlock';\n\nconst { useBlockElementRef } = unlock( blockEditorPrivateApis );\n\n/**\n * Recursively collect blocks with diff status.\n *\n * @param {Array} blocks The blocks to search.\n * @return {Array} Blocks with __revisionDiffStatus.\n */\nfunction collectDiffBlocks( blocks ) {\n\tconst result = [];\n\tfor ( const block of blocks ) {\n\t\tif ( block.__revisionDiffStatus?.status ) {\n\t\t\tresult.push( {\n\t\t\t\tclientId: block.clientId,\n\t\t\t\tstatus: block.__revisionDiffStatus.status,\n\t\t\t} );\n\t\t}\n\t\tif ( block.innerBlocks?.length ) {\n\t\t\tresult.push( ...collectDiffBlocks( block.innerBlocks ) );\n\t\t}\n\t}\n\treturn result;\n}\n\nconst STATUS_LABELS = {\n\tadded: __( 'Go to added block' ),\n\tremoved: __( 'Go to removed block' ),\n\tmodified: __( 'Go to modified block' ),\n};\n\nfunction calculatePosition( el ) {\n\tif ( ! el ) {\n\t\treturn null;\n\t}\n\tconst doc = el.ownerDocument;\n\tconst scrollHeight = doc.documentElement.scrollHeight;\n\tconst rect = el.getBoundingClientRect();\n\tconst scrollTop = doc.documentElement.scrollTop;\n\tconst top = rect.top + scrollTop;\n\treturn {\n\t\ttop: ( top / scrollHeight ) * 100,\n\t\theight: ( rect.height / scrollHeight ) * 100,\n\t};\n}\n\n/**\n * Button component for a single diff marker.\n *\n * @param {Object}   props           Component props.\n * @param {string}   props.clientId  The block client ID.\n * @param {string}   props.status    The diff status (added/removed/modified).\n * @param {Function} props.subscribe Function to subscribe to position updates.\n * @return {React.JSX.Element} The diff marker button or null if position not calculated.\n */\nfunction DiffMarkerButton( { clientId, status, subscribe } ) {\n\tconst blockRef = useRef();\n\tuseBlockElementRef( clientId, blockRef );\n\tconst [ position, setPosition ] = useState( () =>\n\t\tcalculatePosition( blockRef.current )\n\t);\n\n\tuseEffect( () => {\n\t\treturn subscribe( () => {\n\t\t\tsetPosition( calculatePosition( blockRef.current ) );\n\t\t} );\n\t}, [ subscribe ] );\n\n\tuseEffect( () => {\n\t\tsetPosition( calculatePosition( blockRef.current ) );\n\t}, [ status ] );\n\n\tif ( ! position ) {\n\t\treturn null;\n\t}\n\n\treturn (\n\t\t<button\n\t\t\tclassName={ `revision-diff-marker is-${ status }` }\n\t\t\tstyle={ {\n\t\t\t\ttop: `${ position.top }%`,\n\t\t\t\theight: `${ Math.max( position.height, 0.5 ) }%`,\n\t\t\t} }\n\t\t\tonClick={ () => blockRef.current?.focus() }\n\t\t\taria-label={ STATUS_LABELS[ status ] }\n\t\t/>\n\t);\n}\n\n/**\n * Hook that provides diff markers functionality.\n * Returns a ref callback for the content element and a DiffMarkers component.\n * Must be used inside a BlockEditorProvider context.\n *\n * @return {Array} Tuple of [contentRef, DiffMarkersComponent].\n */\nexport function useDiffMarkers() {\n\tconst [ isMounted, setIsMounted ] = useState( false );\n\tconst subscribersRef = useRef( new Set() );\n\tconst blocks = useSelect(\n\t\t( select ) => select( blockEditorStore ).getBlocks(),\n\t\t[]\n\t);\n\tconst diffBlocks = useMemo( () => collectDiffBlocks( blocks ), [ blocks ] );\n\tconst subscribe = useCallback( ( callback ) => {\n\t\tsubscribersRef.current.add( callback );\n\t\treturn () => subscribersRef.current.delete( callback );\n\t}, [] );\n\tconst contentRef = useRefEffect( ( element ) => {\n\t\tconst { ownerDocument } = element;\n\t\tconst { defaultView } = ownerDocument;\n\t\tconst resizeObserver = new defaultView.ResizeObserver( () => {\n\t\t\tsubscribersRef.current.forEach( ( cb ) => cb() );\n\t\t} );\n\t\tresizeObserver.observe( ownerDocument.body );\n\t\treturn () => {\n\t\t\tresizeObserver.disconnect();\n\t\t};\n\t}, [] );\n\treturn [\n\t\tuseMergeRefs( [ contentRef, setIsMounted ] ),\n\t\t<div\n\t\t\tkey=\"diff-markers\"\n\t\t\tclassName=\"revision-diff-markers\"\n\t\t\trole=\"navigation\"\n\t\t\taria-label={ __( 'Diff markers' ) }\n\t\t>\n\t\t\t{ isMounted &&\n\t\t\t\tdiffBlocks.map( ( { clientId, status } ) => (\n\t\t\t\t\t<DiffMarkerButton\n\t\t\t\t\t\tkey={ clientId }\n\t\t\t\t\t\tclientId={ clientId }\n\t\t\t\t\t\tstatus={ status }\n\t\t\t\t\t\tsubscribe={ subscribe }\n\t\t\t\t\t/>\n\t\t\t\t) ) }\n\t\t</div>,\n\t];\n}\n"],
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