51 lines
1.4 KiB
TypeScript
51 lines
1.4 KiB
TypeScript
import { NodeType } from 'prosemirror-model'
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import { InputRule, InputRuleFinder } from '../InputRule'
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import { ExtendedRegExpMatchArray } from '../types'
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import callOrReturn from '../utilities/callOrReturn'
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/**
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* Build an input rule that adds a node when the
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* matched text is typed into it.
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*/
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export default function nodeInputRule(config: {
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find: InputRuleFinder,
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type: NodeType,
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getAttributes?:
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| Record<string, any>
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| ((match: ExtendedRegExpMatchArray) => Record<string, any>)
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| false
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| null
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,
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}) {
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return new InputRule({
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find: config.find,
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handler: ({ state, range, match }) => {
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const attributes = callOrReturn(config.getAttributes, undefined, match) || {}
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const { tr } = state
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const start = range.from
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let end = range.to
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if (match[1]) {
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const offset = match[0].lastIndexOf(match[1])
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let matchStart = start + offset
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if (matchStart > end) {
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matchStart = end
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} else {
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end = matchStart + match[1].length
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}
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// insert last typed character
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const lastChar = match[0][match[0].length - 1]
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tr.insertText(lastChar, start + match[0].length - 1)
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// insert node from input rule
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tr.replaceWith(matchStart, end, config.type.create(attributes))
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} else if (match[0]) {
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tr.replaceWith(start, end, config.type.create(attributes))
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}
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},
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})
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}
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