@wordpress/block-library/build-module/list-item/utils.mjs.map

Block library for the WordPress editor.

{
  "version": 3,
  "sources": ["../../src/list-item/utils.js"],
  "sourcesContent": ["import { store as blockEditorStore } from '@wordpress/block-editor';\nimport { cloneBlock } from '@wordpress/blocks';\n\n/**\n * The previous sibling to nest a list item under when indenting, or undefined\n * for the first item, which has no sibling to nest under.\n *\n * @param {Object} select   The block editor store's selectors.\n * @param {string} clientId The list item's client ID.\n *\n * @return {string|undefined} The client ID to nest the item under.\n */\nexport function getIndentTarget( select, clientId ) {\n\treturn select.getPreviousBlockClientId( clientId );\n}\n\n/**\n * The ancestor list item the given item's list is nested in when outdenting, or\n * undefined at the top level, where there is nothing to outdent to.\n *\n * @param {Object} select   The block editor store's selectors.\n * @param {string} clientId The list item's client ID.\n *\n * @return {string|undefined} The ancestor list item's client ID.\n */\nexport function getOutdentTarget( select, clientId ) {\n\tconst listId = select.getBlockRootClientId( clientId );\n\tconst parentListItemId = select.getBlockRootClientId( listId );\n\tif (\n\t\t! parentListItemId ||\n\t\tselect.getBlockName( parentListItemId ) !== 'core/list-item'\n\t) {\n\t\treturn undefined;\n\t}\n\treturn parentListItemId;\n}\n\n/**\n * Moves blocks into a list item's nested list, keeping their client IDs. If the\n * list item has no nested list yet, one is created from the source list so it\n * inherits its attributes.\n *\n * @param {Object}   registry     The data registry.\n * @param {string[]} clientIds    The blocks to move.\n * @param {string}   sourceListId The list the blocks currently live in, also\n *                                cloned when a nested list has to be created.\n * @param {string}   listItemId   The list item to nest the blocks under.\n */\nexport function moveBlocksToNestedList(\n\tregistry,\n\tclientIds,\n\tsourceListId,\n\tlistItemId\n) {\n\tconst { getBlockOrder, getBlock } = registry.select( blockEditorStore );\n\tconst { moveBlocksToPosition, removeBlocks, insertBlock } =\n\t\tregistry.dispatch( blockEditorStore );\n\t// A list item can hold more than one nested list; append to the last one,\n\t// the same subtree a reader sees at the end of the item.\n\tconst nestedLists = getBlockOrder( listItemId );\n\tconst nestedListId = nestedLists[ nestedLists.length - 1 ];\n\n\tif ( nestedListId ) {\n\t\tmoveBlocksToPosition( clientIds, sourceListId, nestedListId );\n\t\treturn;\n\t}\n\n\t// Insert the list with the items already inside: an empty list would be\n\t// scaffolded with the list block type's template, and moving into a freshly\n\t// created list would fail its canInsert check. Cloning the source list keeps\n\t// its attributes; passing the items as inner blocks keeps their client IDs.\n\tconst nestedList = cloneBlock(\n\t\tgetBlock( sourceListId ),\n\t\t{},\n\t\tclientIds.map( ( id ) => getBlock( id ) )\n\t);\n\t// Remove and re-insert in one batch so the blocks are never momentarily\n\t// detached. A caller batch nests harmlessly: only the outermost flushes.\n\tregistry.batch( () => {\n\t\tremoveBlocks( clientIds, false );\n\t\tinsertBlock( nestedList, 0, listItemId, false );\n\t} );\n}\n\n/**\n * Indents the selected list items, nesting them under the previous sibling of\n * the given item. Defaults to the first selected item.\n *\n * @param {Object} registry   The data registry.\n * @param {string} [clientId] The list item providing the sibling to nest under.\n *\n * @return {boolean} Whether the items were indented.\n */\nexport function indentListItems( registry, clientId ) {\n\tconst select = registry.select( blockEditorStore );\n\tconst {\n\t\tgetBlockRootClientId,\n\t\tgetSelectedBlockClientIds,\n\t\tgetSelectionStart,\n\t\tgetSelectionEnd,\n\t\thasMultiSelection,\n\t\tgetMultiSelectedBlockClientIds,\n\t} = select;\n\tconst { selectionChange, multiSelect } =\n\t\tregistry.dispatch( blockEditorStore );\n\n\tconst _hasMultiSelection = hasMultiSelection();\n\tconst clientIds = _hasMultiSelection\n\t\t? getMultiSelectedBlockClientIds()\n\t\t: getSelectedBlockClientIds();\n\n\tif ( clientId === undefined ) {\n\t\tclientId = clientIds[ 0 ];\n\t}\n\n\tconst previousSiblingId = getIndentTarget( select, clientId );\n\n\t// Can't indent the first item: there is no sibling to nest it under.\n\tif ( ! previousSiblingId ) {\n\t\treturn false;\n\t}\n\n\tconst rootClientId = getBlockRootClientId( clientId );\n\t// Read the selection before the move: creating a nested list removes and\n\t// re-inserts the items, which drops it.\n\tconst selectionStart = getSelectionStart();\n\tconst selectionEnd = getSelectionEnd();\n\n\tregistry.batch( () => {\n\t\tmoveBlocksToNestedList(\n\t\t\tregistry,\n\t\t\tclientIds,\n\t\t\trootClientId,\n\t\t\tpreviousSiblingId\n\t\t);\n\n\t\t// Put the selection back on the same blocks (client IDs are kept).\n\t\tif ( ! _hasMultiSelection ) {\n\t\t\tselectionChange(\n\t\t\t\tclientIds[ 0 ],\n\t\t\t\tselectionEnd.attributeKey,\n\t\t\t\tselectionEnd.clientId === selectionStart.clientId\n\t\t\t\t\t? selectionStart.offset\n\t\t\t\t\t: selectionEnd.offset,\n\t\t\t\tselectionEnd.offset\n\t\t\t);\n\t\t} else {\n\t\t\tmultiSelect( clientIds[ 0 ], clientIds[ clientIds.length - 1 ] );\n\t\t}\n\t} );\n\n\treturn true;\n}\n\n/**\n * Outdents list items, moving them up a level. Defaults to the selected items;\n * a specific set can be passed, e.g. to outdent an item's children.\n *\n * @param {Object}          registry    The data registry.\n * @param {string[]|string} [clientIds] The list items to outdent.\n *\n * @return {boolean} Whether the items were outdented.\n */\nexport function outdentListItems( registry, clientIds ) {\n\tconst select = registry.select( blockEditorStore );\n\tconst {\n\t\tgetBlockRootClientId,\n\t\tgetBlockName,\n\t\tgetBlockOrder,\n\t\tgetBlockIndex,\n\t\tgetSelectedBlockClientIds,\n\t} = select;\n\tconst { moveBlocksToPosition, removeBlock, multiSelect } =\n\t\tregistry.dispatch( blockEditorStore );\n\n\tif ( clientIds === undefined ) {\n\t\tclientIds = getSelectedBlockClientIds();\n\t}\n\n\tif ( ! Array.isArray( clientIds ) ) {\n\t\tclientIds = [ clientIds ];\n\t}\n\n\tif ( ! clientIds.length ) {\n\t\treturn false;\n\t}\n\n\tconst firstClientId = clientIds[ 0 ];\n\n\t// Can't outdent if it's not a list item.\n\tif ( getBlockName( firstClientId ) !== 'core/list-item' ) {\n\t\treturn false;\n\t}\n\n\t// Can't outdent if it's at the top level.\n\tconst parentListItemId = getOutdentTarget( select, firstClientId );\n\tif ( ! parentListItemId ) {\n\t\treturn false;\n\t}\n\n\tconst parentListId = getBlockRootClientId( firstClientId );\n\tconst lastClientId = clientIds[ clientIds.length - 1 ];\n\tconst order = getBlockOrder( parentListId );\n\tconst followingListItems = order.slice( getBlockIndex( lastClientId ) + 1 );\n\n\tregistry.batch( () => {\n\t\tif ( followingListItems.length ) {\n\t\t\t// Nest the items that follow under the outdented item so they keep\n\t\t\t// their place below it.\n\t\t\tmoveBlocksToNestedList(\n\t\t\t\tregistry,\n\t\t\t\tfollowingListItems,\n\t\t\t\tparentListId,\n\t\t\t\tfirstClientId\n\t\t\t);\n\t\t}\n\t\tmoveBlocksToPosition(\n\t\t\tclientIds,\n\t\t\tparentListId,\n\t\t\tgetBlockRootClientId( parentListItemId ),\n\t\t\tgetBlockIndex( parentListItemId ) + 1\n\t\t);\n\t\tif ( ! getBlockOrder( parentListId ).length ) {\n\t\t\tconst shouldSelectParent = false;\n\t\t\tremoveBlock( parentListId, shouldSelectParent );\n\t\t}\n\n\t\t// Reset the lingering partial cross-block range to a whole block\n\t\t// selection. A single caret is preserved by the store on its own.\n\t\tif ( clientIds.length > 1 ) {\n\t\t\tmultiSelect( firstClientId, lastClientId );\n\t\t}\n\t} );\n\n\treturn true;\n}\n"],
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