Add previous button to installer first page

gui/src/installer/message.rs

@@ -20,6 +20,7 @@ pub enum Message {
     Next,
     Skip,
     Previous,
+    BackToLauncher,
     Install,
     Close,
     Reload,

gui/src/installer/mod.rs

@@ -73,6 +73,10 @@ impl Installer {
         )
     }
 
+    pub fn destination_path(&self) -> PathBuf {
+        self.context.data_dir.clone()
+    }
+
     pub fn subscription(&self) -> Subscription<Message> {
         if self.current > 0 {
             self.steps

gui/src/installer/view.rs

@@ -111,6 +111,11 @@ pub fn welcome<'a>() -> Element<'a, Message> {
                                     .padding(20),
                                 ),
                         )
+                        .push(
+                            button::secondary(Some(icon::previous_icon()), "Change network")
+                                .width(Length::Fixed(200.0))
+                                .on_press(Message::BackToLauncher),
+                        )
                         .push(Space::with_height(Length::Fixed(100.0)))
                         .spacing(50)
                         .align_items(Alignment::Center),

gui/src/main.rs

@@ -246,6 +246,10 @@ impl Application for GUI {
                     );
                     self.state = State::Loader(Box::new(loader));
                     command.map(|msg| Message::Load(Box::new(msg)))
+                } else if let installer::Message::BackToLauncher = *msg {
+                    let launcher = Launcher::new(i.destination_path());
+                    self.state = State::Launcher(Box::new(launcher));
+                    Command::none()
                 } else {
                     i.update(*msg).map(|msg| Message::Install(Box::new(msg)))
                 }