add SceneRequested event

Author: lucasfernog

Cargo.lock

@@ -4283,6 +4283,10 @@ fn handle_event_loop<T: UserEvent>(
     } => callback(RunEvent::Reopen {
       has_visible_windows,
     }),
+    #[cfg(target_os = "ios")]
+    Event::SceneRequested { scene, options } => {
+      callback(RunEvent::SceneRequested { scene, options });
+    }
     _ => (),
   }
 }

crates/tauri-runtime-wry/src/lib.rs

@@ -238,6 +238,20 @@ pub enum RunEvent<T: UserEvent> {
   },
   /// A custom event defined by the user.
   UserEvent(T),
+  /// Emitted when a scene is requested by the system.
+  ///
+  /// This event is emitted when a scene is requested by the system.
+  /// Scenes created by [`Window::new`] are not emitted with this event.
+  /// It is also not emitted for the main scene.
+  #[cfg(target_os = "ios")]
+  SceneRequested {
+    /// Scene that was requested by the system.
+    scene: objc2::rc::Retained<objc2_ui_kit::UIScene>,
+    /// Options that were used to request the scene.
+    ///
+    /// This lets you determine why the scene was requested.
+    options: objc2::rc::Retained<objc2_ui_kit::UISceneConnectionOptions>,
+  },
 }
 
 /// Action to take when the event loop is about to exit

crates/tauri-runtime/src/lib.rs

@@ -252,6 +252,20 @@ pub enum RunEvent {
     /// Indicates whether the NSApplication object found any visible windows in your application.
     has_visible_windows: bool,
   },
+  /// Emitted when a scene is requested by the system.
+  ///
+  /// This event is emitted when a scene is requested by the system.
+  /// Scenes created by [`Window::new`] are not emitted with this event.
+  /// It is also not emitted for the main scene.
+  #[cfg(target_os = "ios")]
+  SceneRequested {
+    /// Scene that was requested by the system.
+    scene: objc2::rc::Retained<objc2_ui_kit::UIScene>,
+    /// Options that were used to request the scene.
+    ///
+    /// This lets you determine why the scene was requested.
+    options: objc2::rc::Retained<objc2_ui_kit::UISceneConnectionOptions>,
+  },
 }
 
 impl From<EventLoopMessage> for RunEvent {
@@ -2505,6 +2519,10 @@ fn on_event_loop_event<R: Runtime>(
     } => RunEvent::Reopen {
       has_visible_windows,
     },
+    #[cfg(target_os = "ios")]
+    RuntimeRunEvent::SceneRequested { scene, options } => {
+      RunEvent::SceneRequested { scene, options }
+    }
     _ => unimplemented!(),
   };
 

crates/tauri/src/app.rs

@@ -86,7 +86,7 @@ pub fn run_app<R: Runtime, F: FnOnce(&App<R>) + Send + 'static>(
 
             let number = created_window_count.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
 
-            let builder = tauri::WebviewWindowBuilder::new(
+            let builder = WebviewWindowBuilder::new(
               &app_,
               format!("new-{number}"),
               tauri::WebviewUrl::External("about:blank".parse().unwrap()),
@@ -181,9 +181,12 @@ pub fn run_app<R: Runtime, F: FnOnce(&App<R>) + Send + 'static>(
   #[cfg(target_os = "macos")]
   app.set_activation_policy(tauri::ActivationPolicy::Regular);
 
+  #[cfg(target_os = "ios")]
+  let mut counter = 0;
   app.run(move |_app_handle, _event| {
-    #[cfg(all(desktop, not(test)))]
+    #[cfg(not(test))]
     match &_event {
+      #[cfg(desktop)]
       RunEvent::ExitRequested { api, code, .. } => {
         // Keep the event loop running even if all windows are closed
         // This allow us to catch tray icon events when there is no window
@@ -192,6 +195,7 @@ pub fn run_app<R: Runtime, F: FnOnce(&App<R>) + Send + 'static>(
           api.prevent_exit();
         }
       }
+      #[cfg(desktop)]
       RunEvent::WindowEvent {
         event: tauri::WindowEvent::CloseRequested { api, .. },
         label,
@@ -207,6 +211,17 @@ pub fn run_app<R: Runtime, F: FnOnce(&App<R>) + Send + 'static>(
           .destroy()
           .unwrap();
       }
+      #[cfg(target_os = "ios")]
+      RunEvent::SceneRequested { .. } => {
+        counter += 1;
+        WebviewWindowBuilder::new(
+          _app_handle,
+          format!("main-from-scene-{counter}"),
+          WebviewUrl::default(),
+        )
+        .build()
+        .unwrap();
+      }
       _ => (),
     }
   })