feat: paste as link

src/lib/editor.component.ts

@@ -109,6 +109,7 @@ export class NgxEditorComponent implements ControlValueAccessor, OnInit, OnChang
     }));
 
     this.editor.registerPlugin(plugins.image(this.injector));
+    this.editor.registerPlugin(plugins.link());
   }
 
   ngOnInit(): void {

src/lib/plugins/index.ts

@@ -4,3 +4,4 @@ export { default as attributes } from './attributes';
 export { default as focus } from './focus';
 export { default as blur } from './blur';
 export { default as image } from './image';
+export { default as link } from './link';

src/lib/plugins/link.ts

@@ -0,0 +1,54 @@
+import { Fragment, Slice, Node as ProseMirrorNode } from 'prosemirror-model';
+import { Plugin, PluginKey } from 'prosemirror-state';
+
+const HTTP_LINK_REGEX = /((https?:\/\/)?[\w-]+(\.[\w-]+)+\.?(:\d+)?(\/\S*)?)$/;
+
+const linkify = (fragment: Fragment): Fragment => {
+  const linkified: ProseMirrorNode[] = [];
+
+  fragment.forEach((child: ProseMirrorNode) => {
+    if (child.isText) {
+      const text = child.text as string;
+      let pos = 0;
+
+      const match: RegExpMatchArray | null = HTTP_LINK_REGEX.exec(text);
+
+      if (match) {
+        const start = match.index;
+        const end = start + match[0].length;
+        const link = child.type.schema.marks.link;
+
+        if (start > 0) {
+          linkified.push(child.cut(pos, start));
+        }
+
+        const urlText = text.slice(start, end);
+        linkified.push(
+          child.cut(start, end).mark(link.create({ href: urlText }).addToSet(child.marks))
+        );
+        pos = end;
+      }
+
+      if (pos < text.length) {
+        linkified.push(child.cut(pos));
+      }
+    } else {
+      linkified.push(child.copy(linkify(child.content)));
+    }
+  });
+
+  return Fragment.fromArray(linkified);
+};
+
+const linkPlugin = () => {
+  return new Plugin({
+    key: new PluginKey('link'),
+    props: {
+      transformPasted: (slice: Slice) => {
+        return new Slice(linkify(slice.content), slice.openStart, slice.openEnd);
+      }
+    }
+  });
+};
+
+export default linkPlugin;