Add user::event module.

client/src/user/event.rs

@@ -0,0 +1,22 @@
+//! This module defines events affecting the user module and their handling.
+
+use crate::context::Context;
+use crate::event::EventHandler;
+
+/// An event affecting the user module.
+#[derive(Debug, PartialEq, Eq)]
+pub enum UserEvent {}
+
+pub struct UserEventHandler;
+
+impl EventHandler for UserEventHandler {
+  type Event = UserEvent;
+
+  fn handle(
+    &mut self,
+    _context: &mut Context,
+    _event: Self::Event,
+  ) -> anyhow::Result<()> {
+    Ok(())
+  }
+}

client/src/user/mod.rs

@@ -1,3 +1,5 @@
+mod event;
 mod map;
 
+pub use event::{UserEvent, UserEventHandler};
 pub use map::UserMap;