Setup a layer trait

.cargo/cargo.toml

@@ -1,3 +1,2 @@
-# .cargo/config.toml
 [env]
 CMAKE_POLICY_VERSION_MINIMUM = "3.5"

src/app.rs

@@ -1,20 +1,23 @@
 use std::time::Duration;
-use eframe::{egui, Frame, Storage, CreationContext};
+use eframe::{Frame, Storage, CreationContext};
 use eframe::egui::{Context, Ui};
 use serde::{Deserialize, Serialize};
 
-#[derive(Default)]
 pub(crate) struct Application {
     settings: AppSettings,
+    layers:  Vec<Box<dyn crate::layer::Layer>>,
 }
 
 #[derive(Serialize, Deserialize, Default)]
 struct AppSettings {
-    serialization_test_string: String,
+    use_cookies: bool,
+    use_firefox_cookies: bool,
+    use_chrome_cookies: bool,
+    save_thumbnails: bool,
 }
 
 impl Application {
-    pub fn new(cc: &CreationContext) -> Self {
+    pub fn new(cc: &CreationContext, layers: Vec<Box<dyn crate::layer::Layer>>) -> Self {
         let mut settings = AppSettings::default();
         if let Some(storage) = cc.storage {
             if let Some(stored_str) = storage.get_string("app_settings") {
@@ -24,21 +27,26 @@ impl Application {
             }
         }
 
-        Self { settings }
+        Self { settings, layers }
     }
 }
 
 impl eframe::App for Application {
 
     fn logic(&mut self, ctx: &Context, frame: &mut Frame) {
-
+        let mut layers = std::mem::take(&mut self.layers);
+        for layer in &mut layers {
+            layer.logic(self, ctx, frame);
+        }
+        self.layers = layers;
     }
 
     fn ui(&mut self, ui: &mut Ui, frame: &mut Frame) {
-        egui::CentralPanel::default().show(ui, |ui| {
-            ui.heading("Hello!");
-            ui.text_edit_singleline(&mut self.settings.serialization_test_string);
-        });
+        let mut layers = std::mem::take(&mut self.layers);
+        for layer in &mut layers {
+            layer.ui(self, ui, frame);
+        }
+        self.layers = layers;
     }
 
     fn save(&mut self, _storage: &mut dyn Storage) {

src/layer.rs

@@ -0,0 +1,19 @@
+use eframe::{egui, Frame};
+use egui::Context;
+use egui::Ui;
+use crate::app::Application;
+
+#[allow(unused_variables)]
+pub trait Layer {
+    fn logic(&mut self, application: &mut Application, ctx: &Context, frame: &mut Frame) {
+
+    }
+
+    fn ui(&mut self, application: &mut Application, ui: &mut Ui, frame: &mut Frame) {
+
+    }
+
+    fn on_exit(&mut self, application: &mut Application) {
+
+    }
+}

src/main.rs

@@ -2,9 +2,13 @@ use std::fs;
 use std::path::PathBuf;
 use std::process::exit;
 use tracing::{debug, error};
+use crate::test_layer::TestLayer;
+
 mod logging;
 mod args;
 mod app;
+mod layer;
+mod test_layer;
 
 fn main() {
     let args = args::parse_args();
@@ -23,12 +27,16 @@ fn main() {
         }
     }
 
+    let mut layers: Vec<Box<dyn layer::Layer>> = Vec::new();
+    layers.push(Box::new(TestLayer::default()));
+
+
     let mut options = eframe::NativeOptions::default();
     options.persistence_path = Some(args.state.parse().expect("Failed to parse state config file path into path"));
     eframe::run_native(
         "yt-offline",
         options,
         Box::new(|cc| {
-            Ok(Box::new(app::Application::new(cc)))
+            Ok(Box::new(app::Application::new(cc, layers)))
         })).expect("TODO: panic message");
 }

src/test_layer.rs

@@ -0,0 +1,25 @@
+use eframe::egui::{Context, Ui};
+use eframe::{egui, Frame};
+use crate::app;
+use crate::layer::Layer;
+
+#[derive(Default)]
+pub struct TestLayer {
+    test_string: String,
+}
+
+impl Layer for TestLayer {
+    fn logic(&mut self, application: &mut app::Application, ctx: &Context, frame: &mut Frame) {
+
+    }
+
+    fn ui(&mut self, application: &mut app::Application, ui: &mut Ui, frame: &mut Frame) {
+        egui::CentralPanel::default().show(ui, |ui| {
+            ui.heading("Hello from the test_layer!");
+            ui.text_edit_singleline(&mut self.test_string);
+            if ui.button("Print test_string in layer").clicked() {
+                println!("{}", self.test_string);
+            }
+        });
+    }
+}