feat: add selectable check modifiers

src/apps/dialog-with-listeners.ts

@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: 2022 Johannes Loher
+//
+// SPDX-License-Identifier: MIT
+
+/**
+ * A simple extension to the {@link Dialog} class that allows attaching additional listeners.
+ */
+export class DialogWithListeners extends Dialog<DialogWithListenersOptions> {
+    /** @inheritdoc */
+    activateListeners(html: JQuery): void {
+        super.activateListeners(html);
+        if (this.options.activateAdditionalListeners !== undefined) {
+            this.options.activateAdditionalListeners(html, this);
+        }
+    }
+}
+
+interface DialogWithListenersOptions extends DialogOptions {
+    activateAdditionalListeners?: ((html: JQuery, app: DialogWithListeners) => void) | undefined;
+}