Add preference section navigation

src/app/preferences.rs

@@ -312,13 +312,23 @@ fn update_runtime_config(runtime_config: &RwLock<Config>, config: &Config) {
 }
 
 impl App {
-    pub(super) fn open_preferences(&mut self) {
+    pub(super) fn open_preferences(&mut self) -> Task<Message> {
+        if let Some(id) = self.preferences_window {
+            return window::gain_focus(id);
+        }
         if self.database.is_none() || self.pending_project_path.is_some() || self.choosing_folder {
-            return;
+            return Task::none();
         }
         self.preference_draft = PreferenceDraft::from_saved(&self.config);
         self.preference_error = None;
-        self.preferences_open = true;
+        let (id, open) = window::open(window::Settings {
+            size: Size::new(920.0, 700.0),
+            min_size: Some(Size::new(720.0, 480.0)),
+            icon: Some(app_icon()),
+            ..Default::default()
+        });
+        self.preferences_window = Some(id);
+        open.map(Message::PreferencesOpened)
     }
 
     pub(super) fn save_preferences(&mut self) {
@@ -413,7 +423,6 @@ impl App {
             self._endpoint = Some(endpoint);
         }
         self.preference_draft = PreferenceDraft::from_saved(&self.config);
-        self.preferences_open = false;
         self.preference_error = None;
         self.error = None;
     }