react-code-dataset
/
react-page
/packages
/plugins
/content
/slate
/src
/htmlToSlate
/HtmlToSlate.tsx
| import flatten from 'lodash.flatten'; | |
| import { jsx } from 'slate-hyperscript'; | |
| import type { SlatePlugin } from '../types/SlatePlugin'; | |
| import type { SlateState } from '../types/state'; | |
| import parseHtml from './parseHtml'; | |
| const HtmlToSlate = ({ plugins }: { plugins: SlatePlugin[] }) => { | |
| const deserializeElement = (el: Node) => { | |
| const nodename = el.nodeName.toUpperCase(); | |
| if (el.nodeType === 3) { | |
| return el.textContent; | |
| } else if (el.nodeType !== 1) { | |
| return null; | |
| } else if (nodename === 'BR') { | |
| return '\n'; | |
| } | |
| const { nodeName } = el; | |
| const parent = el; | |
| // eslint-disable-next-line @typescript-eslint/no-explicit-any | |
| const children: any[] = flatten( | |
| Array.from(parent.childNodes).map(deserializeElement) | |
| ); | |
| if (nodename === 'BODY') { | |
| return jsx('fragment', {}, children); | |
| } | |
| const matchingPlugin = plugins.find((p) => { | |
| return ( | |
| p.pluginType === 'component' && | |
| p.deserialize?.tagName === nodeName.toLowerCase() | |
| ); | |
| }); | |
| if (matchingPlugin && matchingPlugin.pluginType === 'component') { | |
| const elHtml = el as HTMLElement; | |
| if (!elHtml.style) { | |
| // xmldom has no style attribute | |
| // we monkey patch it in for easier style parsing | |
| // eslint-disable-next-line @typescript-eslint/no-explicit-any | |
| (elHtml as any).style = new (require('cssstyle').CSSStyleDeclaration)(); | |
| // eslint-disable-next-line @typescript-eslint/no-explicit-any | |
| (elHtml.style as any).cssText = elHtml.getAttribute('style'); | |
| } | |
| if (matchingPlugin.object === 'mark') { | |
| const attrs = { | |
| [matchingPlugin.type]: | |
| matchingPlugin?.deserialize?.getData?.(elHtml) ?? true, | |
| }; | |
| return children.map((child) => jsx('text', attrs, child)); | |
| } else { | |
| const data = matchingPlugin?.deserialize?.getData?.(elHtml); | |
| const attrs = { | |
| type: matchingPlugin.type, | |
| ...(data ? { data } : {}), // don't add data if its empty | |
| }; | |
| return jsx('element', attrs, children); | |
| } | |
| } | |
| return children; | |
| }; | |
| return (htmlString: string): SlateState => { | |
| const parsed = parseHtml('<body>' + htmlString + '</body>'); | |
| const fragment = deserializeElement( | |
| parsed.documentElement | |
| // eslint-disable-next-line @typescript-eslint/no-explicit-any | |
| ) as unknown as any[]; | |
| const nodes = Array.isArray(fragment) ? fragment : [fragment]; | |
| // filter empty nodes (that contain only text) | |
| return { | |
| slate: nodes.filter((n) => n.text?.trim() !== '' ?? true), | |
| }; | |
| }; | |
| }; | |
| export default HtmlToSlate; | |