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GitOrigin-RevId: 23b3e6a5db8583646f378cef52f41889a73a3672
46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import { EditorView } from '@codemirror/view'
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import { EditorSelection, EditorState, StateCommand } from '@codemirror/state'
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import { SearchQuery, StringQuery, selectWord } from '@codemirror/search'
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export { selectNextOccurrence } from '@codemirror/search'
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const findPrevOccurence = (state: EditorState, search: string) => {
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const searchQuery = new SearchQuery({ search, literal: true })
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const query = new StringQuery(searchQuery)
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const { from, to } = state.selection.main
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return query.prevMatch(state, from, to)
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}
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export const selectPrevOccurrence: StateCommand = ({ state, dispatch }) => {
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const { ranges } = state.selection
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if (ranges.some(range => range.from === range.to)) {
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return selectWord({ state, dispatch })
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}
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const searchedText = state.sliceDoc(ranges[0].from, ranges[0].to)
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if (
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state.selection.ranges.some(
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range => state.sliceDoc(range.from, range.to) !== searchedText
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)
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) {
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return false
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}
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const range = findPrevOccurence(state, searchedText)
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if (!range) {
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return false
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}
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dispatch(
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state.update({
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selection: state.selection.addRange(
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EditorSelection.range(range.from, range.to)
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),
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effects: EditorView.scrollIntoView(range.to),
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})
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)
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return true
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}
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