feat(admonitions): start implementing autoformat

packages/ckeditor5-admonition/src/admonition.ts

@@ -11,6 +11,7 @@ import { Plugin } from 'ckeditor5/src/core.js';
 
 import AdmonitionEditing from './admonitionediting.js';
 import AdmonitionUI from './admonitionui.js';
+import AdmonitionAutoformat from './admonitionautoformat.js';
 
 /**
  * The block quote plugin.
@@ -27,7 +28,7 @@ export default class Admonition extends Plugin {
 	 * @inheritDoc
 	 */
 	public static get requires() {
-		return [ AdmonitionEditing, AdmonitionUI ] as const;
+		return [ AdmonitionEditing, AdmonitionUI, AdmonitionAutoformat ] as const;
 	}
 
 	/**

packages/ckeditor5-admonition/src/admonitionautoformat.ts

@@ -0,0 +1,20 @@
+import Plugin from "@ckeditor/ckeditor5-core/src/plugin";
+import Autoformat from "@ckeditor/ckeditor5-autoformat/src/autoformat";
+import blockAutoformatEditing from "@ckeditor/ckeditor5-autoformat/src/blockautoformatediting";
+
+export default class AdmonitionAutoformat extends Plugin {
+	static get requires() {
+		return [ Autoformat ];
+	}
+
+	afterInit() {
+		if (!this.editor.commands.get("admonition")) {
+			return;
+		}
+
+		const instance = (this as any);
+		blockAutoformatEditing(this.editor, instance, /^\!\!\[*\! (.+) $/, (match) => {
+			console.log("Got match ", match);
+		});
+	}
+}

packages/ckeditor5-admonition/src/index.ts

@@ -10,6 +10,7 @@
 export { default as Admonition } from './admonition.js';
 export { default as AdmonitionEditing } from './admonitionediting.js';
 export { default as AdmonitionUI } from './admonitionui.js';
+export { default as AdmonitionAutoformat } from './admonitionautoformat.js';
 export type { default as AdmonitionCommand } from './admonitioncommand.js';
 
 import './augmentation.js';