diff --git a/src/ui/activities/mod.rs b/src/ui/activities/mod.rs
new file mode 100644
index 0000000..64717ef
--- /dev/null
+++ b/src/ui/activities/mod.rs
@@ -0,0 +1,51 @@
+//! ## Activities
+//!
+//! `activities` is the module which provides all the different activities
+//! each activity identifies a layout with its own logic in the UI
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+use super::context::Context;
+
+// Activities
+
+// Activity trait
+
+pub trait Activity {
+    /// ### on_create
+    ///
+    /// `on_create` is the function which must be called to initialize the activity.
+    /// `on_create` must initialize all the data structures used by the activity
+    fn on_create(&mut self, context: &mut Context);
+
+    /// ### on_draw
+    ///
+    /// `on_draw` is the function which draws the graphical interface.
+    /// This function must be called at each tick to refresh the interface
+    fn on_draw(&mut self, context: &mut Context);
+
+    /// ### on_destroy
+    ///
+    /// `on_destroy` is the function which cleans up runtime variables and data before terminating the activity.
+    /// This function must be called once before terminating the activity.
+    fn on_destroy(&mut self, context: &mut Context);
+}
diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index 9744c6d..e4e4bd4 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -24,5 +24,6 @@
 */
 
 // Modules
+pub mod activities;
 pub mod context;
 pub(crate) mod input;