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54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
// adapted from: https://github.com/aguingand/tiptap-markdown/blob/main/src/extensions/tiptap/clipboard.js - MIT
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import { Extension } from "@tiptap/core";
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import { Plugin, PluginKey } from "@tiptap/pm/state";
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import { DOMParser } from "@tiptap/pm/model";
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import { find } from "linkifyjs";
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import { markdownToHtml } from "@docmost/editor-ext";
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export const MarkdownClipboard = Extension.create({
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name: "markdownClipboard",
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priority: 50,
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addOptions() {
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return {
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transformPastedText: false,
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};
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},
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addProseMirrorPlugins() {
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return [
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new Plugin({
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key: new PluginKey("markdownClipboard"),
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props: {
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clipboardTextParser: (text, context, plainText) => {
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const link = find(text, {
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defaultProtocol: "http",
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}).find((item) => item.isLink && item.value === text);
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if (plainText || !this.options.transformPastedText || link) {
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// don't parse plaintext link to allow link paste handler to work
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// pasting with shift key prevents formatting
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return null;
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}
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const parsed = markdownToHtml(text);
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return DOMParser.fromSchema(this.editor.schema).parseSlice(
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elementFromString(parsed),
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{
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preserveWhitespace: true,
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context,
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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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function elementFromString(value) {
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// add a wrapper to preserve leading and trailing whitespace
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const wrappedValue = `<body>${value}</body>`;
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return new window.DOMParser().parseFromString(wrappedValue, "text/html").body;
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}
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