chore(ckeditor5-math): integrate source code

packages/ckeditor5-math/src/autoformatmath.ts

@@ -0,0 +1,57 @@
+import { Plugin, logWarning, blockAutoformatEditing } from 'ckeditor5';
+// eslint-disable-next-line ckeditor5-rules/allow-imports-only-from-main-package-entry-point
+import Math from './math.js';
+import MathCommand from './mathcommand.js';
+import MathUI from './mathui.js';
+
+export default class AutoformatMath extends Plugin {
+	public static get requires() {
+		return [ Math, 'Autoformat' ] as const;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public init(): void {
+		const editor = this.editor;
+
+		if ( !editor.plugins.has( 'Math' ) ) {
+			logWarning( 'autoformat-math-feature-missing', editor );
+		}
+	}
+
+	public afterInit(): void {
+		const editor = this.editor;
+		const command = editor.commands.get( 'math' );
+
+		if ( command instanceof MathCommand ) {
+			const callback = () => {
+				if ( !command.isEnabled ) {
+					return false;
+				}
+
+				command.display = true;
+
+				// Wait until selection is removed.
+				window.setTimeout(
+					() => {
+						const mathUIInstance = editor.plugins.get( 'MathUI' );
+						if ( mathUIInstance instanceof MathUI ) {
+							mathUIInstance._showUI();
+						}
+					},
+					50
+				);
+			};
+
+			// @ts-expect-error: blockAutoformatEditing expects an Autoformat instance even though it works with any Plugin instance
+			blockAutoformatEditing( editor, this, /^\$\$$/, callback );
+			// @ts-expect-error: blockAutoformatEditing expects an Autoformat instance even though it works with any Plugin instance
+			blockAutoformatEditing( editor, this, /^\\\[$/, callback );
+		}
+	}
+
+	public static get pluginName() {
+		return 'AutoformatMath' as const;
+	}
+}