44 lines
1.3 KiB
TypeScript
44 lines
1.3 KiB
TypeScript
import { ViewPlugin, ViewUpdate } from "@codemirror/view";
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const urlRegexp =
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/^https?:\/\/[-a-zA-Z0-9@:%._\+~#=]{1,256}([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/;
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export const pasteLinkExtension = ViewPlugin.fromClass(
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class {
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update(update: ViewUpdate): void {
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update.transactions.forEach((tr) => {
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if (tr.isUserEvent("input.paste")) {
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let pastedText: string[] = [];
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let from = 0;
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let to = 0;
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tr.changes.iterChanges((fromA, toA, fromB, toB, inserted) => {
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pastedText.push(inserted.sliceString(0));
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from = fromA;
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to = toB;
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});
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let pastedString = pastedText.join("");
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if (pastedString.match(urlRegexp)) {
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let selection = update.startState.selection.main;
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if (!selection.empty) {
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setTimeout(() => {
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update.view.dispatch({
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changes: [
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{
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from: from,
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to: to,
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insert: `[${update.startState.sliceDoc(
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selection.from,
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selection.to
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)}](${pastedString})`,
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},
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],
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});
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});
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}
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}
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}
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});
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}
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}
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);
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