@wordpress/block-library/build/list-item/hooks/use-merge.cjs.map

Block library for the WordPress editor.

{
  "version": 3,
  "sources": ["../../../src/list-item/hooks/use-merge.js"],
  "sourcesContent": ["import { useRegistry } from '@wordpress/data';\nimport { store as blockEditorStore } from '@wordpress/block-editor';\nimport { isUnmodifiedBlock, switchToBlockType } from '@wordpress/blocks';\nimport { outdentListItems, getOutdentTarget } from '../utils';\n\nexport default function useMerge( clientId, onMerge ) {\n\tconst registry = useRegistry();\n\n\treturn ( forward ) => {\n\t\tconst select = registry.select( blockEditorStore );\n\t\tconst {\n\t\t\tgetPreviousBlockClientId,\n\t\t\tgetNextBlockClientId,\n\t\t\tgetBlockOrder,\n\t\t\tgetBlockIndex,\n\t\t\tgetBlockRootClientId,\n\t\t\tgetBlockName,\n\t\t\tgetBlock,\n\t\t} = select;\n\t\tconst { mergeBlocks, moveBlocksToPosition, removeBlock, insertBlocks } =\n\t\t\tregistry.dispatch( blockEditorStore );\n\n\t\tfunction getTrailingId( id ) {\n\t\t\tconst order = getBlockOrder( id );\n\n\t\t\tif ( ! order.length ) {\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\treturn getTrailingId( order[ order.length - 1 ] );\n\t\t}\n\n\t\tfunction mergeWithNested( clientIdA, clientIdB ) {\n\t\t\tregistry.batch( () => {\n\t\t\t\t// When merging a sub list item with a higher next list item, we\n\t\t\t\t// also need to move any nested list items. Check if there's a\n\t\t\t\t// listed list, and append its nested list items to the current\n\t\t\t\t// list.\n\t\t\t\tconst [ nestedListClientId ] = getBlockOrder( clientIdB );\n\t\t\t\tif ( nestedListClientId ) {\n\t\t\t\t\t// If we are merging with the previous list item, and the\n\t\t\t\t\t// previous list item does not have nested list, move the\n\t\t\t\t\t// nested list to the previous list item.\n\t\t\t\t\tif (\n\t\t\t\t\t\tgetPreviousBlockClientId( clientIdB ) === clientIdA &&\n\t\t\t\t\t\t! getBlockOrder( clientIdA ).length\n\t\t\t\t\t) {\n\t\t\t\t\t\tmoveBlocksToPosition(\n\t\t\t\t\t\t\t[ nestedListClientId ],\n\t\t\t\t\t\t\tclientIdB,\n\t\t\t\t\t\t\tclientIdA\n\t\t\t\t\t\t);\n\t\t\t\t\t} else if (\n\t\t\t\t\t\tgetOutdentTarget( select, clientIdB ) === clientIdA\n\t\t\t\t\t) {\n\t\t\t\t\t\t// Merging into the parent item's own line: the\n\t\t\t\t\t\t// children take the item's place in its list, one\n\t\t\t\t\t\t// level up, since their line moved there.\n\t\t\t\t\t\tmoveBlocksToPosition(\n\t\t\t\t\t\t\tgetBlockOrder( nestedListClientId ),\n\t\t\t\t\t\t\tnestedListClientId,\n\t\t\t\t\t\t\tgetBlockRootClientId( clientIdB ),\n\t\t\t\t\t\t\tgetBlockIndex( clientIdB ) + 1\n\t\t\t\t\t\t);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tmoveBlocksToPosition(\n\t\t\t\t\t\t\tgetBlockOrder( nestedListClientId ),\n\t\t\t\t\t\t\tnestedListClientId,\n\t\t\t\t\t\t\tgetBlockRootClientId( clientIdA )\n\t\t\t\t\t\t);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tconst listId = getBlockRootClientId( clientIdB );\n\t\t\t\tmergeBlocks( clientIdA, clientIdB );\n\t\t\t\t// Merging the last item of a nested list into its parent\n\t\t\t\t// line leaves the list block empty.\n\t\t\t\tif ( ! getBlockOrder( listId ).length ) {\n\t\t\t\t\tremoveBlock( listId, false );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\tif ( forward ) {\n\t\t\t// Start by diving into the nested list (if any); otherwise walk up\n\t\t\t// parent list items for a next sibling. `listItemId` ends on the\n\t\t\t// topmost list item if none is found.\n\t\t\tconst innerListId = getBlockOrder( clientId )[ 0 ];\n\t\t\tlet nextBlockClientId;\n\t\t\tlet listItemId = clientId;\n\t\t\tif ( innerListId ) {\n\t\t\t\tnextBlockClientId = getBlockOrder( innerListId )[ 0 ];\n\t\t\t} else {\n\t\t\t\twhile (\n\t\t\t\t\t! ( nextBlockClientId = getNextBlockClientId( listItemId ) )\n\t\t\t\t) {\n\t\t\t\t\tconst parentLi = getOutdentTarget( select, listItemId );\n\t\t\t\t\tif ( ! parentLi ) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t\tlistItemId = parentLi;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( ! nextBlockClientId ) {\n\t\t\t\tconst outerListId = getBlockRootClientId( listItemId );\n\t\t\t\tconst followingBlockId = getNextBlockClientId( outerListId );\n\n\t\t\t\tif ( followingBlockId ) {\n\t\t\t\t\tif ( getBlockName( followingBlockId ) === 'core/list' ) {\n\t\t\t\t\t\tregistry.batch( () => {\n\t\t\t\t\t\t\tmoveBlocksToPosition(\n\t\t\t\t\t\t\t\tgetBlockOrder( followingBlockId ),\n\t\t\t\t\t\t\t\tfollowingBlockId,\n\t\t\t\t\t\t\t\touterListId\n\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\tremoveBlock( followingBlockId, false );\n\t\t\t\t\t\t} );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tconst transformed = switchToBlockType(\n\t\t\t\t\t\t\tgetBlock( followingBlockId ),\n\t\t\t\t\t\t\t'core/list'\n\t\t\t\t\t\t);\n\t\t\t\t\t\tconst newInnerBlocks = transformed?.[ 0 ]?.innerBlocks;\n\t\t\t\t\t\tif ( newInnerBlocks?.length ) {\n\t\t\t\t\t\t\tregistry.batch( () => {\n\t\t\t\t\t\t\t\tinsertBlocks(\n\t\t\t\t\t\t\t\t\tnewInnerBlocks,\n\t\t\t\t\t\t\t\t\tundefined,\n\t\t\t\t\t\t\t\t\touterListId,\n\t\t\t\t\t\t\t\t\tfalse\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\tremoveBlock( followingBlockId, false );\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tmergeWithNested( clientId, nextBlockClientId );\n\t\t\t}\n\t\t} else {\n\t\t\t// Merge into the previous line: the trailing item of the\n\t\t\t// previous sibling, or the parent item's own line for a first\n\t\t\t// child.\n\t\t\tconst previousBlockClientId = getPreviousBlockClientId( clientId );\n\t\t\tif ( previousBlockClientId ) {\n\t\t\t\tconst trailingId = getTrailingId( previousBlockClientId );\n\t\t\t\tmergeWithNested( trailingId, clientId );\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tconst parentListItemId = getOutdentTarget( select, clientId );\n\t\t\tif ( parentListItemId ) {\n\t\t\t\tmergeWithNested( parentListItemId, clientId );\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst blockOrder = getBlockOrder( clientId );\n\t\t\tif (\n\t\t\t\tisUnmodifiedBlock( getBlock( clientId ), 'content' ) &&\n\t\t\t\tblockOrder.length > 0\n\t\t\t) {\n\t\t\t\tregistry.batch( () => {\n\t\t\t\t\toutdentListItems(\n\t\t\t\t\t\tregistry,\n\t\t\t\t\t\tgetBlockOrder( blockOrder[ 0 ] )\n\t\t\t\t\t);\n\t\t\t\t\tremoveBlock( clientId, true );\n\t\t\t\t} );\n\t\t\t} else {\n\t\t\t\tonMerge( forward );\n\t\t\t}\n\t\t}\n\t};\n}\n"],
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  "names": ["blockEditorStore"]
}