Extract the application loop from the main file

fitnesstrax/app/src/app.rs

@@ -0,0 +1,93 @@
+/*
+Copyright 2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>
+
+This file is part of FitnessTrax.
+
+FitnessTrax is free software: you can redistribute it and/or modify it under the terms of the GNU
+General Public License as published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+FitnessTrax is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+use emseries::Series;
+use ft_core::TraxRecord;
+use std::{
+    path::{Path, PathBuf},
+    sync::{Arc, RwLock},
+};
+
+/// Invocations are how parts of the application, primarily the UI, will send requests to the core.
+#[derive(Debug)]
+pub enum AppInvocation {
+    /// Tell the core to try to open a database.
+    OpenDatabase(PathBuf),
+
+    /// Request a set of records from the core.
+    // Note: this will require a time range, but doesn't yet.
+    RequestRecords,
+}
+
+/// Responses are messages that the core sends to the UI. Though they are called responses, the
+/// could actually be pre-emptively sent, such as notifications. The UI will need to be able to
+/// process those any time they arrive.
+///
+/// A typical use would be for the UI to send an [AppInvocation::RequestRecords] request and
+/// receive [AppResponse::Records].
+#[derive(Debug)]
+pub enum AppResponse {
+    /// No database is available. The UI should typically display a placeholder, such as the
+    /// welcome view.
+    NoDatabase,
+
+    /// The database is open and here is a set of records. Typically, the set of records will be
+    /// all of the records within a time frame, but this can actually be any set of records.
+    Records,
+
+    /// The database has been changed. This message is useful for telling the UI that a significant
+    /// change has happened. Further, the UI needs to save PathBuf to settings, because the
+    /// gio::Settings system can't be run in the fully async background.
+    DatabaseChanged(PathBuf),
+}
+
+/// The real, headless application. This is where all of the logic will reside.
+#[derive(Clone)]
+pub struct App {
+    database: Arc<RwLock<Option<Series<TraxRecord>>>>,
+}
+
+impl App {
+    pub fn new(db_path: Option<PathBuf>) -> Self {
+        let database = db_path.map(|path| Series::open(path).unwrap());
+        let s = Self {
+            database: Arc::new(RwLock::new(database)),
+        };
+
+        s
+    }
+
+    pub async fn process_invocation(&self, invocation: AppInvocation) -> AppResponse {
+        match invocation {
+            AppInvocation::OpenDatabase(db_path) => {
+                self.open_db(&db_path);
+                AppResponse::DatabaseChanged(db_path)
+            }
+            AppInvocation::RequestRecords => {
+                if self.database.read().unwrap().is_none() {
+                    AppResponse::NoDatabase
+                } else {
+                    AppResponse::Records
+                }
+            }
+        }
+    }
+
+    fn open_db(&self, path: &Path) {
+        let db = Series::open(path).unwrap();
+        *self.database.write().unwrap() = Some(db);
+    }
+}

fitnesstrax/app/src/app_window.rs

@@ -15,15 +15,13 @@ You should have received a copy of the GNU General Public License along with Fit
 */
 
 use crate::{
+    app::{AppInvocation, AppResponse},
     views::{HistoricalView, PlaceholderView, View, ViewName, WelcomeView},
-    AppInvocation, AppResponse,
 };
 use adw::prelude::*;
 use async_channel::Sender;
 use gio::resources_lookup_data;
-use glib::Object;
 use gtk::STYLE_PROVIDER_PRIORITY_USER;
-use gtk::{prelude::*, subclass::prelude::*};
 use std::path::PathBuf;
 use std::{cell::RefCell, rc::Rc};
 
@@ -32,7 +30,6 @@ use std::{cell::RefCell, rc::Rc};
 #[derive(Clone)]
 pub struct AppWindow {
     app_tx: Sender<AppInvocation>,
-    window: adw::ApplicationWindow,
     layout: gtk::Box,
     current_view: Rc<RefCell<View>>,
     settings: gio::Settings,
@@ -70,7 +67,9 @@ impl AppWindow {
         let provider = gtk::CssProvider::new();
         provider.load_from_data(&stylesheet);
 
+        #[allow(deprecated)]
         let context = window.style_context();
+        #[allow(deprecated)]
         context.add_provider(&provider, STYLE_PROVIDER_PRIORITY_USER);
 
         let header = adw::HeaderBar::builder()
@@ -91,7 +90,6 @@ impl AppWindow {
 
         let s = Self {
             app_tx,
-            window,
             layout,
             current_view: Rc::new(RefCell::new(initial_view)),
             settings: gio::Settings::new(app_id),
@@ -135,7 +133,6 @@ impl AppWindow {
 
     fn construct_view(&self, view: ViewName) -> View {
         match view {
-            ViewName::Placeholder => View::Placeholder(PlaceholderView::new().upcast()),
             ViewName::Welcome => View::Welcome(
                 WelcomeView::new({
                     let s = self.clone();

fitnesstrax/app/src/components/mod.rs

@@ -16,11 +16,7 @@ You should have received a copy of the GNU General Public License along with Fit
 
 use glib::Object;
 use gtk::{prelude::*, subclass::prelude::*};
-use std::{
-    cell::RefCell,
-    path::{Path, PathBuf},
-    rc::Rc,
-};
+use std::{cell::RefCell, path::PathBuf, rc::Rc};
 
 pub struct FileChooserRowPrivate {
     path: RefCell<Option<PathBuf>>,

fitnesstrax/app/src/main.rs

@@ -14,101 +14,20 @@ General Public License for more details.
 You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
 */
 
+mod app;
 mod app_window;
 mod components;
 mod views;
 
 use adw::prelude::*;
 use app_window::AppWindow;
-use async_channel::{Receiver, Sender};
-use emseries::{EmseriesReadError, Series};
-use ft_core::TraxRecord;
-use std::{
-    env,
-    path::{Path, PathBuf},
-    rc::Rc,
-    sync::{Arc, RwLock},
-};
+use std::{env, path::PathBuf};
 
 const APP_ID_DEV: &str = "com.luminescent-dreams.fitnesstrax.dev";
 const APP_ID_PROD: &str = "com.luminescent-dreams.fitnesstrax";
 
 const RESOURCE_BASE_PATH: &str = "/com/luminescent-dreams/fitnesstrax/";
 
-/// Invocations are how parts of the application, primarily the UI, will send requests to the core.
-#[derive(Debug)]
-pub enum AppInvocation {
-    /// Tell the core to try to open a database.
-    OpenDatabase(PathBuf),
-
-    /// Request a set of records from the core.
-    // Note: this will require a time range, but doesn't yet.
-    RequestRecords,
-}
-
-/// Responses are messages that the core sends to the UI. Though they are called responses, the
-/// could actually be pre-emptively sent, such as notifications. The UI will need to be able to
-/// process those any time they arrive.
-///
-/// A typical use would be for the UI to send an [AppInvocation::RequestRecords] request and
-/// receive [AppResponse::Records].
-#[derive(Debug)]
-pub enum AppResponse {
-    /// No database is available. The UI should typically display a placeholder, such as the
-    /// welcome view.
-    NoDatabase,
-
-    /// The database is open and here is a set of records. Typically, the set of records will be
-    /// all of the records within a time frame, but this can actually be any set of records.
-    Records,
-
-    /// The database has been changed. This message is useful for telling the UI that a significant
-    /// change has happened. Further, the UI needs to save PathBuf to settings, because the
-    /// gio::Settings system can't be run in the fully async background.
-    DatabaseChanged(PathBuf),
-}
-
-// 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 {
-    database: Arc<RwLock<Option<Series<TraxRecord>>>>,
-}
-
-impl App {
-    pub fn new(db_path: Option<PathBuf>) -> Self {
-        let database = db_path.map(|path| Series::open(path).unwrap());
-        let s = Self {
-            database: Arc::new(RwLock::new(database)),
-        };
-
-        s
-    }
-
-    pub async fn process_invocation(&self, invocation: AppInvocation) -> AppResponse {
-        match invocation {
-            AppInvocation::OpenDatabase(db_path) => {
-                self.open_db(&db_path);
-                AppResponse::DatabaseChanged(db_path)
-            }
-            AppInvocation::RequestRecords => {
-                if self.database.read().unwrap().is_none() {
-                    AppResponse::NoDatabase
-                } else {
-                    AppResponse::Records
-                }
-            }
-        }
-    }
-
-    pub fn open_db(&self, path: &Path) {
-        let db = Series::open(path).unwrap();
-        *self.database.write().unwrap() = Some(db);
-    }
-}
-
 fn main() {
     // I still don't fully understand gio resources. resources_register_include! is convenient
     // because I don't have to deal with filesystem locations at runtime. However, I think other
@@ -124,7 +43,7 @@ fn main() {
     };
 
     let settings = gio::Settings::new(app_id);
-    let app = App::new({
+    let app = app::App::new({
         let path = settings.string("series-path");
         if path.is_empty() {
             None
@@ -146,18 +65,18 @@ fn main() {
     adw_app.connect_activate(move |adw_app| {
         // These channels are used to send messages to the UI. Anything that needs to send a
         // message to the UI will send it via `ui_tx`. We will have one single process that owns
-        // `ui_rx`. That process will read messages coming in and send them to AppWindow for proper
+        // `ui_rx`. That process will read messages coming in and send them to [AppWindow] for proper
         // processing.
         //
         // The core app will usually only send messages in response to a request, but this channel
         // can also be used to tell the UI that something happened in the background, such as
         // detecting a watch, detecting new tracks to import, and so forth.
-        let (ui_tx, ui_rx) = async_channel::unbounded::<AppResponse>();
+        let (ui_tx, ui_rx) = async_channel::unbounded::<app::AppResponse>();
 
         // These channels are used for communicating with the app. Already I can see that a lot of
         // different event handlers will need copies of app_tx in order to send requests into the
         // UI.
-        let (app_tx, app_rx) = async_channel::unbounded::<AppInvocation>();
+        let (app_tx, app_rx) = async_channel::unbounded::<app::AppInvocation>();
 
         let window = AppWindow::new(app_id, RESOURCE_BASE_PATH, adw_app, app_tx.clone());
 
@@ -167,7 +86,7 @@ fn main() {
         glib::spawn_future_local(async move {
             // The app requests data to start with. This kicks everything off. The response from
             // the app will cause the window to be updated shortly.
-            let _ = app_tx.send(AppInvocation::RequestRecords).await;
+            let _ = app_tx.send(app::AppInvocation::RequestRecords).await;
 
             while let Ok(response) = ui_rx.recv().await {
                 window.process_response(response);

fitnesstrax/app/src/views/mod.rs

@@ -25,7 +25,6 @@ pub use welcome_view::WelcomeView;
 
 #[derive(Clone, Debug, PartialEq)]
 pub enum ViewName {
-    Placeholder,
     Welcome,
     Historical,
 }

fitnesstrax/app/src/views/placeholder_view.rs

@@ -15,7 +15,7 @@ You should have received a copy of the GNU General Public License along with Fit
 */
 
 use glib::Object;
-use gtk::{prelude::*, subclass::prelude::*};
+use gtk::subclass::prelude::*;
 
 pub struct PlaceholderViewPrivate {}