Add the window header bar

fitnesstrax/app/src/main.rs

@@ -18,7 +18,7 @@ use emseries::Series;
 use ft_core::TraxRecord;
 use gio::resources_lookup_data;
 use glib::Object;
-use gtk::{prelude::*, subclass::prelude::*, STYLE_PROVIDER_PRIORITY_USER};
+use gtk::{subclass::prelude::*, STYLE_PROVIDER_PRIORITY_USER};
 use std::{
     cell::RefCell,
     env,
@@ -117,22 +117,13 @@ impl HistoricalView {
     }
 }
 
-/// These are the possible states of the main application view.
-enum MainView {
-    /// The application is not configured yet. This is a basic background widget to take up the
-    /// space when there is no data to be shown.
-    Unconfigured(UnconfiguredView),
-
-    /// The Historical view shows a history of records and whatnot.
-    Historical(HistoricalView),
-}
-
 /// The application window, or the main window, is the main user interface for the app. Almost
 /// everything occurs here.
 struct AppWindow {
     app: App,
     window: adw::ApplicationWindow,
-    current_view: RefCell<MainView>,
+    layout: gtk::Box,
+    current_view: RefCell<gtk::Widget>,
 }
 
 impl AppWindow {
@@ -150,9 +141,9 @@ impl AppWindow {
             .build();
 
         let current_view = if app.database.read().unwrap().is_none() {
-            MainView::Unconfigured(UnconfiguredView::new())
+            UnconfiguredView::new().upcast()
         } else {
-            MainView::Historical(HistoricalView::new())
+            HistoricalView::new().upcast()
         };
 
         let stylesheet = String::from_utf8(
@@ -171,26 +162,38 @@ impl AppWindow {
         let context = window.style_context();
         context.add_provider(&provider, STYLE_PROVIDER_PRIORITY_USER);
 
+        let header = adw::HeaderBar::builder()
+            .title_widget(&gtk::Label::new(Some("FitnessTrax")))
+            .build();
+
+        let layout = gtk::Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .build();
+        layout.append(&header);
+        layout.append(&current_view);
+
+        window.set_content(Some(&layout));
         window.present();
 
         let s = Self {
             app,
             window,
+            layout,
             current_view: RefCell::new(current_view),
         };
-        s.redraw();
         s
     }
 
     // Switch views.
     //
     // This function only replaces the old view with the one which matches the current view state.
-    // If there is any other setup/teardown to do, it will handle that as well.
-    fn redraw(&self) {
-        match *self.current_view.borrow() {
-            MainView::Unconfigured(ref view) => self.window.set_content(Some(view)),
-            MainView::Historical(ref view) => self.window.set_content(Some(view)),
-        }
+    // It is responsible for ensuring that the new view goes into the layout in the correct
+    // position.
+    fn change_view(&self, view: gtk::Widget) {
+        let mut current_view = self.current_view.borrow_mut();
+        self.layout.remove(&*current_view);
+        *current_view = view;
+        self.layout.append(&*current_view);
     }
 }