Refactor pages into separate files

examples/cosmic/src/window/networking.rs

@@ -0,0 +1,43 @@
+use super::{Page, SubPage};
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum NetworkingPage {
+    Wired,
+    OnlineAccounts,
+}
+
+impl SubPage for NetworkingPage {
+    //TODO: translate
+    fn title(&self) -> &'static str {
+        use NetworkingPage::*;
+        match self {
+            Wired => "Wired",
+            OnlineAccounts => "Online Accounts",
+        }
+    }
+
+    //TODO: translate
+    fn description(&self) -> &'static str {
+        use NetworkingPage::*;
+        match self {
+            Wired => "Wired connection, connection profiles",
+            OnlineAccounts => "Add accounts, IMAP and SMTP, enterprise logins",
+        }
+    }
+
+    fn icon_name(&self) -> &'static str {
+        use NetworkingPage::*;
+        match self {
+            Wired => "network-workgroup-symbolic",
+            OnlineAccounts => "goa-panel-symbolic", //TODO: new icon
+        }
+    }
+
+    fn parent_page(&self) -> Page {
+        Page::Networking(None)
+    }
+
+    fn into_page(self) -> Page {
+        Page::Networking(Some(self))
+    }
+}