Slow Mode WIP (#192):

* frontend: display an infobox when slow mode is active (WIP)

conversejs/lib/slow-mode/plugin.ts

@@ -0,0 +1,14 @@
+/**
+ * Slow Mode plugin definition.
+ * This code should be published to ConverseJS upstream once the XEP for the slow mode feature is proposed.
+ * Note: part of the code is also in the custom muc-bottom-panel template.
+ */
+export const slowModePlugin = {
+  dependencies: ['converse-muc', 'converse-muc-views'],
+  async initialize (this: any) {
+    const _converse = this._converse
+    _converse.api.listen.on('chatRoomInitialized', function (this: any, _model: any): void {
+      // TODO: disable the textarea after each new message, for X seconds.
+    })
+  }
+}