@wordpress/blocks
Version:
Block API for WordPress.
8 lines (7 loc) • 2.79 kB
Source Map (JSON)
{
"version": 3,
"sources": ["../../../src/api/raw-handling/list-reducer.js"],
"sourcesContent": ["/**\n * WordPress dependencies\n */\nimport { unwrap } from '@wordpress/dom';\n\nfunction isList( node ) {\n\treturn node.nodeName === 'OL' || node.nodeName === 'UL';\n}\n\nfunction shallowTextContent( element ) {\n\treturn Array.from( element.childNodes )\n\t\t.map( ( { nodeValue = '' } ) => nodeValue )\n\t\t.join( '' );\n}\n\nexport default function listReducer( node ) {\n\tif ( ! isList( node ) ) {\n\t\treturn;\n\t}\n\n\tconst list = node;\n\tconst prevElement = node.previousElementSibling;\n\n\t// Merge with previous list if:\n\t// * There is a previous list of the same type.\n\t// * There is only one list item.\n\tif (\n\t\tprevElement &&\n\t\tprevElement.nodeName === node.nodeName &&\n\t\tlist.children.length === 1\n\t) {\n\t\t// Move all child nodes, including any text nodes, if any.\n\t\twhile ( list.firstChild ) {\n\t\t\tprevElement.appendChild( list.firstChild );\n\t\t}\n\n\t\tlist.parentNode.removeChild( list );\n\t}\n\n\tconst parentElement = node.parentNode;\n\n\t// Nested list with empty parent item.\n\tif (\n\t\tparentElement &&\n\t\tparentElement.nodeName === 'LI' &&\n\t\tparentElement.children.length === 1 &&\n\t\t! /\\S/.test( shallowTextContent( parentElement ) )\n\t) {\n\t\tconst parentListItem = parentElement;\n\t\tconst prevListItem = parentListItem.previousElementSibling;\n\t\tconst parentList = parentListItem.parentNode;\n\n\t\tif ( prevListItem ) {\n\t\t\tprevListItem.appendChild( list );\n\t\t\tparentList.removeChild( parentListItem );\n\t\t}\n\t}\n\n\t// Invalid: OL/UL > OL/UL.\n\tif ( parentElement && isList( parentElement ) ) {\n\t\tconst prevListItem = node.previousElementSibling;\n\n\t\tif ( prevListItem ) {\n\t\t\tprevListItem.appendChild( node );\n\t\t} else {\n\t\t\tunwrap( node );\n\t\t}\n\t}\n}\n"],
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"names": []
}