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import flatten from 'lodash.flatten'; |
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import { jsx } from 'slate-hyperscript'; |
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import type { SlatePlugin } from '../types/SlatePlugin'; |
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import type { SlateState } from '../types/state'; |
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import parseHtml from './parseHtml'; |
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const HtmlToSlate = ({ plugins }: { plugins: SlatePlugin[] }) => { |
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const deserializeElement = (el: Node) => { |
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const nodename = el.nodeName.toUpperCase(); |
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if (el.nodeType === 3) { |
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return el.textContent; |
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} else if (el.nodeType !== 1) { |
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return null; |
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} else if (nodename === 'BR') { |
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return '\n'; |
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} |
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const { nodeName } = el; |
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const parent = el; |
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const children: any[] = flatten( |
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Array.from(parent.childNodes).map(deserializeElement) |
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); |
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if (nodename === 'BODY') { |
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return jsx('fragment', {}, children); |
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} |
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const matchingPlugin = plugins.find((p) => { |
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return ( |
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p.pluginType === 'component' && |
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p.deserialize?.tagName === nodeName.toLowerCase() |
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); |
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}); |
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if (matchingPlugin && matchingPlugin.pluginType === 'component') { |
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const elHtml = el as HTMLElement; |
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if (!elHtml.style) { |
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(elHtml as any).style = new (require('cssstyle').CSSStyleDeclaration)(); |
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(elHtml.style as any).cssText = elHtml.getAttribute('style'); |
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} |
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if (matchingPlugin.object === 'mark') { |
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const attrs = { |
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[matchingPlugin.type]: |
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matchingPlugin?.deserialize?.getData?.(elHtml) ?? true, |
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}; |
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return children.map((child) => jsx('text', attrs, child)); |
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} else { |
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const data = matchingPlugin?.deserialize?.getData?.(elHtml); |
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const attrs = { |
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type: matchingPlugin.type, |
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...(data ? { data } : {}), |
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}; |
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return jsx('element', attrs, children); |
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} |
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} |
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return children; |
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}; |
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return (htmlString: string): SlateState => { |
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const parsed = parseHtml('<body>' + htmlString + '</body>'); |
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const fragment = deserializeElement( |
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parsed.documentElement |
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) as unknown as any[]; |
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const nodes = Array.isArray(fragment) ? fragment : [fragment]; |
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return { |
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slate: nodes.filter((n) => n.text?.trim() !== '' ?? true), |
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}; |
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}; |
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}; |
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export default HtmlToSlate; |
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