Bind GtkSettings dark property to GSettings

Now you can switch between dark and light on the fly

hammond-gtk/src/app.rs

@@ -1,13 +1,13 @@
 #![allow(new_without_default)]
+#![allow(unused)]
 
 use gio::{
-    self, ActionMapExt, ApplicationExt, ApplicationExtManual, ApplicationFlags, SettingsExt,
-    SimpleAction, SimpleActionExt,
+    self, ActionMapExt, ApplicationExt, ApplicationExtManual, ApplicationFlags,
+    SettingsBindFlags, SettingsExt, SimpleAction, SimpleActionExt,
 };
 use glib;
 use gtk;
 use gtk::prelude::*;
-use gtk::SettingsExt as GtkSettingsExt;
 
 use crossbeam_channel::{unbounded, Receiver, Sender};
 use hammond_data::Show;
@@ -150,9 +150,12 @@ impl App {
 
     fn setup_dark_theme(&self) {
         let gtk_settings = gtk::Settings::get_default().unwrap();
-        let enabled = self.settings.get_boolean("dark-theme");
-
-        gtk_settings.set_property_gtk_application_prefer_dark_theme(enabled);
+        self.settings.bind(
+            "dark-theme",
+            &gtk_settings,
+            "gtk-application-prefer-dark-theme",
+            SettingsBindFlags::DEFAULT,
+        );
     }
 
     fn setup_refresh_on_startup(&self) {
@@ -187,6 +190,7 @@ impl App {
         let win = &self.window;
         let instance = &self.instance;
         let header = &self.headerbar;
+        let settings = &self.settings;
 
         // Create the `refresh` action.
         //

hammond-gtk/src/prefs.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use gio;
 use gio::{Settings, SettingsExt};
 use gtk;
@@ -87,7 +89,7 @@ impl Prefs {
         let store = gtk::ListStore::new(&[gtk::Type::String]);
         let mut i = 0;
         for item in ["Seconds", "Minutes", "Hours", "Days", "Weeks"].iter() {
-            let row = [&(item) as &ToValue];
+            let row: &[&ToValue] = &[item];
             if item.to_lowercase() == refresh_p {
                 refresh_pos = i;
             }
@@ -119,7 +121,7 @@ impl Prefs {
         }));
     }
 
-    pub fn show(&self, parent: &gtk::Window) {
+    pub fn show(&self, parent: &gtk::ApplicationWindow) {
         self.dialog.set_transient_for(Some(parent));
         self.dialog.set_modal(true);
         self.dialog.show_all();