Save the database path to settings and attempt to open the database on start

fitnesstrax/app/resources/style.css

@@ -0,0 +1,21 @@
+.welcome {
+    margin: 64px;
+}
+
+.welcome-title {
+    font-size: larger;
+    padding: 8px;
+}
+
+.welcome-content {
+    padding: 8px;
+}
+
+.welcome-footer {
+}
+
+.dialog-row {
+    margin: 8px 0px 8px 0px;
+    padding: 8px;
+}
+

fitnesstrax/app/src/main.rs

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License along with Fit
 mod ui;
 
 use adw::prelude::*;
-use emseries::Series;
+use emseries::{EmseriesReadError, Series};
 use ft_core::TraxRecord;
 use gio::resources_lookup_data;
 use glib::Object;
@@ -25,7 +25,7 @@ use gtk::{subclass::prelude::*, STYLE_PROVIDER_PRIORITY_USER};
 use std::{
     cell::RefCell,
     env,
-    path::PathBuf,
+    path::{Path, PathBuf},
     rc::Rc,
     sync::{Arc, RwLock},
 };
@@ -36,17 +36,71 @@ const APP_ID_PROD: &str = "com.luminescent-dreams.fitnesstrax";
 
 const RESOURCE_BASE_PATH: &str = "/com/luminescent-dreams/fitnesstrax/";
 
+/// A set of events that can occur at the global application level. These events should represent
+/// significant state changes that should go through a central dispatcher.
+enum Events {
+    DatabaseChanged(Series<TraxRecord>),
+}
+// Note that I have not yet figured out the communication channel or how the central dispatcher
+// should work. There's a dance between the App and the AppWindow that I haven't figured out yet.
+
 /// The real, headless application. This is where all of the logic will reside.
 #[derive(Clone)]
 struct App {
+    settings: gio::Settings,
     database: Arc<RwLock<Option<Series<TraxRecord>>>>,
 }
 
 impl App {
-    pub fn new() -> Self {
-        Self {
+    pub fn new(settings: gio::Settings) -> Self {
+        let s = Self {
+            settings,
             database: Arc::new(RwLock::new(None)),
+        };
+
+        if !s.settings.string("series-path").is_empty() {
+            let path = PathBuf::from(s.settings.string("series-path"));
+            let db = Series::open(path).unwrap();
+            *s.database.write().unwrap() = Some(db);
         }
+
+        s
+    }
+
+    pub fn open_db(&self, path: &Path) {
+        let db = Series::open(path).unwrap();
+        *self.database.write().unwrap() = Some(db);
+        self.settings
+            .set_string("series-path", path.to_str().unwrap())
+            .unwrap();
+    }
+}
+
+pub struct PlaceholderViewPrivate {}
+
+#[glib::object_subclass]
+impl ObjectSubclass for PlaceholderViewPrivate {
+    const NAME: &'static str = "PlaceholderView";
+    type Type = PlaceholderView;
+    type ParentType = gtk::Box;
+
+    fn new() -> Self {
+        Self {}
+    }
+}
+
+impl ObjectImpl for PlaceholderViewPrivate {}
+impl WidgetImpl for PlaceholderViewPrivate {}
+impl BoxImpl for PlaceholderViewPrivate {}
+
+glib::wrapper! {
+    pub struct PlaceholderView(ObjectSubclass<PlaceholderViewPrivate>) @extends gtk::Box, gtk::Widget;
+}
+
+impl PlaceholderView {
+    pub fn new() -> Self {
+        let s: Self = Object::builder().build();
+        s
     }
 }
 
@@ -74,19 +128,19 @@ glib::wrapper! {
 }
 
 impl WelcomeView {
-    pub fn new<F>(on_save: F) -> Self
+    pub fn new<F>(on_save: Box<F>) -> Self
     where
         F: Fn(PathBuf) + 'static,
     {
         let s: Self = Object::builder().build();
         s.set_orientation(gtk::Orientation::Vertical);
-        s.set_css_classes(&["modal"]);
+        s.set_css_classes(&["welcome"]);
 
         // Replace this with the welcome screen that we set up in the fitnesstrax/unconfigured-page
         // branch.
         let title = gtk::Label::builder()
             .label("Welcome to FitnessTrax")
-            .css_classes(["modal-title"])
+            .css_classes(["welcome-title"])
             .build();
 
         let content = gtk::Box::builder()
@@ -111,7 +165,7 @@ impl WelcomeView {
         content.append(&gtk::Label::new(Some("Welcome to FitnessTrax. The application has not yet been configured, so I will walk you through that. Let's start out by selecting your database.")));
         content.append(&db_row);
 
-        let on_save = Box::new(on_save);
+        let on_save = on_save;
         save_button.connect_clicked({
             move |_| {
                 if let Some(path) = db_row.path() {
@@ -166,11 +220,12 @@ impl HistoricalView {
 
 /// The application window, or the main window, is the main user interface for the app. Almost
 /// everything occurs here.
+#[derive(Clone)]
 struct AppWindow {
     app: App,
     window: adw::ApplicationWindow,
     layout: gtk::Box,
-    current_view: RefCell<gtk::Widget>,
+    current_view: Rc<RefCell<gtk::Widget>>,
 }
 
 impl AppWindow {
@@ -187,12 +242,6 @@ impl AppWindow {
             .height_request(600)
             .build();
 
-        let current_view = if app.database.read().unwrap().is_none() {
-            WelcomeView::new(&|_| {}).upcast()
-        } else {
-            HistoricalView::new().upcast()
-        };
-
         let stylesheet = String::from_utf8(
             resources_lookup_data(
                 &format!("{}style.css", RESOURCE_BASE_PATH),
@@ -216,18 +265,47 @@ impl AppWindow {
         let layout = gtk::Box::builder()
             .orientation(gtk::Orientation::Vertical)
             .build();
+
+        let initial_view = PlaceholderView::new();
+
         layout.append(&header);
-        layout.append(&current_view);
+        layout.append(&initial_view);
 
         window.set_content(Some(&layout));
         window.present();
 
         let s = Self {
-            app,
+            app: app.clone(),
             window,
             layout,
-            current_view: RefCell::new(current_view),
+            current_view: Rc::new(RefCell::new(initial_view.upcast())),
         };
+
+        let initial_view = if app.database.read().unwrap().is_none() {
+            WelcomeView::new({
+                let app = app.clone();
+                let s = s.clone();
+                Box::new(move |path: PathBuf| {
+                    // The user has selected a path. Perhaps the path is new, perhaps it already
+                    // exists.
+                    //
+                    // If the file exists already, attempt to read it. Fail if that doesn't work.
+                    // A should show to the user something that indicates that the file exists but is
+                    // not already a database.
+                    //
+                    // If the file does not exist, create a new one. Again, show the user an error if
+                    // some kind of error occurs.
+                    app.open_db(&path);
+                    s.change_view(HistoricalView::new().upcast());
+                })
+            })
+            .upcast()
+        } else {
+            HistoricalView::new().upcast()
+        };
+
+        s.change_view(initial_view);
+
         s
     }
 
@@ -262,7 +340,7 @@ fn main() {
 
     println!("database path: {}", settings.string("series-path"));
 
-    let app = App::new();
+    let app = App::new(settings);
 
     /*
     let runtime = tokio::runtime::Builder::new_multi_thread()

fitnesstrax/app/src/ui/mod.rs

@@ -56,26 +56,23 @@ impl FileChooserRow {
     {
         let s: Self = Object::builder().build();
 
+        s.set_css_classes(&["dialog-row", "card"]);
         s.set_orientation(gtk::Orientation::Horizontal);
+        s.set_spacing(8);
 
         // The database selection row should be a box that shows a default database path, along with a
         // button that triggers a file chooser dialog. Once the dialog returns, the box should be
         // updated to reflect the chosen path.
         s.imp().label.set_text("No database selected");
 
-        let db_file_chooser_button = gtk::Button::builder().label("Select Database").build();
         let on_selected = Rc::new(Box::new(on_selected));
-        db_file_chooser_button.connect_clicked({
-            let s = s.clone();
-            move |_| {
-                let no_window: Option<&gtk::Window> = None;
-                let not_cancellable: Option<&gio::Cancellable> = None;
+
+        let import_button = gtk::Button::builder().label("Import a Database").build();
+
+        let handle_file_selection = Rc::new(Box::new({
             let s = s.clone();
             let on_selected = on_selected.clone();
-                gtk::FileDialog::builder().build().save(
-                    no_window,
-                    not_cancellable,
-                    move |file_id| match file_id {
+            move |file_id: Result<gio::File, glib::Error>| match file_id {
                 Ok(file_id) => match file_id.path() {
                     Some(path) => {
                         s.imp().label.set_text(path.to_str().unwrap());
@@ -88,13 +85,42 @@ impl FileChooserRow {
                     }
                 },
                 Err(err) => println!("file opening failed: {}", err),
-                    },
+            }
+        }));
+
+        import_button.connect_clicked({
+            let handle_file_selection = handle_file_selection.clone();
+            move |_| {
+                let no_window: Option<&gtk::Window> = None;
+                let not_cancellable: Option<&gio::Cancellable> = None;
+                let handle_file_selection = handle_file_selection.clone();
+                gtk::FileDialog::builder().build().open(
+                    no_window,
+                    not_cancellable,
+                    move |file_id| handle_file_selection(file_id),
                 );
             }
         });
 
+        let new_button = gtk::Button::builder().label("Create Database").build();
+        new_button.connect_clicked({
+            let handle_file_selection = handle_file_selection.clone();
+            move |_| {
+                let no_window: Option<&gtk::Window> = None;
+                let not_cancellable: Option<&gio::Cancellable> = None;
+                let handle_file_selection = handle_file_selection.clone();
+                gtk::FileDialog::builder().build().save(
+                    no_window,
+                    not_cancellable,
+                    move |file_id| handle_file_selection(file_id),
+                );
+            }
+        });
+
+        s.imp().label.set_halign(gtk::Align::Start);
         s.append(&s.imp().label);
-        s.append(&db_file_chooser_button);
+        s.append(&import_button);
+        s.append(&new_button);
 
         s
     }