draft tab actions

src/app/browser/main/tab/data.cpp

@@ -10,12 +10,32 @@ Data::Data()
         Gtk::Orientation::VERTICAL
     );
 
-    // Init elements
+    // Init children components
     navbar = new data::Navbar();
 
     append(
         * navbar
     );
+
+    // Init actions group
+    action_group = Gio::SimpleActionGroup::create();
+
+    // Define actions
+    action_group->add_action(
+        "update",
+        sigc::mem_fun(
+            * this,
+            & Data::update
+        )
+    );
+
+    insert_action_group(
+        "tab",
+        action_group
+    );
 }
 
 Data::~Data() = default;
+
+void Data::update()
+{} // @TODO