Move widget trait to widgets

src/navigator/mod.rs

@@ -1,4 +1,5 @@
 use crate::backend::Backend;
+use crate::widgets::Widget;
 use futures_channel::oneshot;
 use futures_channel::oneshot::{Receiver, Sender};
 use glib::clone;
@@ -16,12 +17,6 @@ pub trait Screen<I, O>: Widget {
     fn new(input: I, navigation_handle: NavigationHandle<O>) -> Rc<Self> where Self: Sized;
 }
 
-/// Something that can be represented as a GTK widget.
-pub trait Widget {
-    /// Get the widget.
-    fn get_widget(&self) -> gtk::Widget;
-}
-
 /// An accessor to navigation functionality for screens.
 pub struct NavigationHandle<O> {
     /// The backend, in case the screen needs it.

src/preferences/login.rs

@@ -1,7 +1,8 @@
 use super::register::RegisterDialog;
 use crate::push;
 use crate::backend::{Backend, LoginData};
-use crate::navigator::{NavigationHandle, Screen, Widget};
+use crate::navigator::{NavigationHandle, Screen};
+use crate::widgets::Widget;
 use glib::clone;
 use gtk::prelude::*;
 use gtk_macros::get_widget;

src/preferences/register.rs

@@ -1,5 +1,6 @@
 use crate::backend::{Backend, LoginData, UserRegistration};
-use crate::navigator::{NavigationHandle, Screen, Widget};
+use crate::navigator::{NavigationHandle, Screen};
+use crate::widgets::Widget;
 use glib::clone;
 use gtk::prelude::*;
 use gtk_macros::get_widget;

src/widgets/mod.rs

@@ -1,3 +1,5 @@
+use gtk::prelude::*;
+
 pub mod editor;
 pub use editor::*;
 
@@ -29,3 +31,15 @@ pub mod upload_section;
 pub use upload_section::*;
 
 mod indexed_list_model;
+
+/// Something that can be represented as a GTK widget.
+pub trait Widget {
+    /// Get the widget.
+    fn get_widget(&self) -> gtk::Widget;
+}
+
+impl<W: IsA<gtk::Widget>> Widget for W {
+    fn get_widget(&self) -> gtk::Widget {
+        self.clone().upcast()
+    }
+}