feat(macOS): Add application show and hide methods (#3689)

Co-authored-by: Lucas Nogueira <lucas@tauri.studio>

Author: probablykasper

.changes/mac-app-hide-allowlist.md

@@ -0,0 +1,5 @@
+---
+"tauri-utils": minor
+---
+
+Added the `app` allowlist module.

.changes/mac-app-hide-api.md

@@ -0,0 +1,5 @@
+---
+"api": minor
+---
+
+Added `show` and `hide` methods on the `app` module.

.changes/mac-app-hide-runtime.md

@@ -0,0 +1,6 @@
+---
+"tauri-runtime-wry": minor
+"tauri-runtime": minor
+---
+
+Added `Runtime::show()`, `RuntimeHandle::show()`, `Runtime::hide()`, `RuntimeHandle::hide()` for hiding/showing the entire application on macOS.

.changes/mac-app-hide.md

@@ -0,0 +1,5 @@
+---
+"tauri": minor
+---
+
+Add `App::show()`, `AppHandle::show()`, `App::hide()` and `AppHandle::hide()` for hiding/showing the entire application on macOS.

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

@@ -29,6 +29,8 @@ use webview2_com::FocusChangedEventHandler;
 #[cfg(windows)]
 use windows::Win32::{Foundation::HWND, System::WinRT::EventRegistrationToken};
 #[cfg(target_os = "macos")]
+use wry::application::platform::macos::EventLoopWindowTargetExtMacOS;
+#[cfg(target_os = "macos")]
 use wry::application::platform::macos::WindowBuilderExtMacOS;
 #[cfg(target_os = "linux")]
 use wry::application::platform::unix::{WindowBuilderExtUnix, WindowExtUnix};
@@ -1021,6 +1023,13 @@ unsafe impl Send for GtkWindow {}
 pub struct RawWindowHandle(pub raw_window_handle::RawWindowHandle);
 unsafe impl Send for RawWindowHandle {}
 
+#[cfg(target_os = "macos")]
+#[derive(Debug, Clone)]
+pub enum ApplicationMessage {
+  Show,
+  Hide,
+}
+
 pub enum WindowMessage {
   #[cfg(desktop)]
   WithWebview(Box<dyn FnOnce(Webview) + Send>),
@@ -1126,6 +1135,8 @@ pub type CreateWebviewClosure<T> = Box<
 
 pub enum Message<T: 'static> {
   Task(Box<dyn FnOnce() + Send>),
+  #[cfg(target_os = "macos")]
+  Application(ApplicationMessage),
   Window(WebviewId, WindowMessage),
   Webview(WebviewId, WebviewMessage),
   #[cfg(all(desktop, feature = "system-tray"))]
@@ -1786,6 +1797,22 @@ impl<T: UserEvent> RuntimeHandle<T> for WryHandle<T> {
   fn raw_display_handle(&self) -> RawDisplayHandle {
     self.context.main_thread.window_target.raw_display_handle()
   }
+
+  #[cfg(target_os = "macos")]
+  fn show(&self) -> tauri_runtime::Result<()> {
+    send_user_message(
+      &self.context,
+      Message::Application(ApplicationMessage::Show),
+    )
+  }
+
+  #[cfg(target_os = "macos")]
+  fn hide(&self) -> tauri_runtime::Result<()> {
+    send_user_message(
+      &self.context,
+      Message::Application(ApplicationMessage::Hide),
+    )
+  }
 }
 
 impl<T: UserEvent> Wry<T> {
@@ -1995,6 +2022,16 @@ impl<T: UserEvent> Runtime<T> for Wry<T> {
       });
   }
 
+  #[cfg(target_os = "macos")]
+  fn show(&self) {
+    self.event_loop.show_application();
+  }
+
+  #[cfg(target_os = "macos")]
+  fn hide(&self) {
+    self.event_loop.hide_application();
+  }
+
   #[cfg(desktop)]
   fn run_iteration<F: FnMut(RunEvent<T>) + 'static>(&mut self, mut callback: F) -> RunIteration {
     use wry::application::platform::run_return::EventLoopExtRunReturn;
@@ -2185,6 +2222,15 @@ fn handle_user_message<T: UserEvent>(
   } = context;
   match message {
     Message::Task(task) => task(),
+    #[cfg(target_os = "macos")]
+    Message::Application(application_message) => match application_message {
+      ApplicationMessage::Show => {
+        event_loop.show_application();
+      }
+      ApplicationMessage::Hide => {
+        event_loop.hide_application();
+      }
+    },
     Message::Window(id, window_message) => {
       if let WindowMessage::UpdateMenuItem(item_id, update) = window_message {
         if let Some(menu_items) = windows.borrow_mut().get_mut(&id).map(|w| &mut w.menu_items) {

core/tauri-runtime/src/lib.rs

@@ -352,6 +352,16 @@ pub trait RuntimeHandle<T: UserEvent>: Debug + Clone + Send + Sync + Sized + 'st
   ) -> Result<<Self::Runtime as Runtime<T>>::TrayHandler>;
 
   fn raw_display_handle(&self) -> RawDisplayHandle;
+
+  /// Shows the application, but does not automatically focus it.
+  #[cfg(target_os = "macos")]
+  #[cfg_attr(doc_cfg, doc(cfg(target_os = "macos")))]
+  fn show(&self) -> Result<()>;
+
+  /// Hides the application.
+  #[cfg(target_os = "macos")]
+  #[cfg_attr(doc_cfg, doc(cfg(target_os = "macos")))]
+  fn hide(&self) -> Result<()>;
 }
 
 /// A global shortcut manager.
@@ -441,6 +451,16 @@ pub trait Runtime<T: UserEvent>: Debug + Sized + 'static {
   #[cfg_attr(doc_cfg, doc(cfg(target_os = "macos")))]
   fn set_activation_policy(&mut self, activation_policy: ActivationPolicy);
 
+  /// Shows the application, but does not automatically focus it.
+  #[cfg(target_os = "macos")]
+  #[cfg_attr(doc_cfg, doc(cfg(target_os = "macos")))]
+  fn show(&self);
+
+  /// Hides the application.
+  #[cfg(target_os = "macos")]
+  #[cfg_attr(doc_cfg, doc(cfg(target_os = "macos")))]
+  fn hide(&self);
+
   /// Runs the one step of the webview runtime event loop and returns control flow to the caller.
   #[cfg(desktop)]
   fn run_iteration<F: Fn(RunEvent<T>) + 'static>(&mut self, callback: F) -> RunIteration;

core/tauri-utils/src/config.rs

@@ -2009,6 +2009,46 @@ impl Allowlist for ClipboardAllowlistConfig {
   }
 }
 
+/// Allowlist for the app APIs.
+#[derive(Debug, Default, PartialEq, Eq, Clone, Deserialize, Serialize)]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct AppAllowlistConfig {
+  /// Use this flag to enable all app APIs.
+  #[serde(default)]
+  pub all: bool,
+  /// Enables the app's `show` API.
+  #[serde(default)]
+  pub show: bool,
+  /// Enables the app's `hide` API.
+  #[serde(default)]
+  pub hide: bool,
+}
+
+impl Allowlist for AppAllowlistConfig {
+  fn all_features() -> Vec<&'static str> {
+    let allowlist = Self {
+      all: false,
+      show: true,
+      hide: true,
+    };
+    let mut features = allowlist.to_features();
+    features.push("app-all");
+    features
+  }
+
+  fn to_features(&self) -> Vec<&'static str> {
+    if self.all {
+      vec!["app-all"]
+    } else {
+      let mut features = Vec::new();
+      check_feature!(self, features, show, "app-show");
+      check_feature!(self, features, hide, "app-hide");
+      features
+    }
+  }
+}
+
 /// Allowlist configuration.
 #[derive(Debug, Default, PartialEq, Eq, Clone, Deserialize, Serialize)]
 #[cfg_attr(feature = "schema", derive(JsonSchema))]
@@ -2053,6 +2093,9 @@ pub struct AllowlistConfig {
   /// Clipboard APIs allowlist.
   #[serde(default)]
   pub clipboard: ClipboardAllowlistConfig,
+  /// App APIs allowlist.
+  #[serde(default)]
+  pub app: AppAllowlistConfig,
 }
 
 impl Allowlist for AllowlistConfig {
@@ -2070,6 +2113,7 @@ impl Allowlist for AllowlistConfig {
     features.extend(ProtocolAllowlistConfig::all_features());
     features.extend(ProcessAllowlistConfig::all_features());
     features.extend(ClipboardAllowlistConfig::all_features());
+    features.extend(AppAllowlistConfig::all_features());
     features
   }
 

core/tauri/Cargo.toml

@@ -176,7 +176,8 @@ api-all = [
   "process-all",
   "protocol-all",
   "shell-all",
-  "window-all"
+  "window-all",
+  "app-all"
 ]
 clipboard-all = [ "clipboard-write-text", "clipboard-read-text" ]
 clipboard-read-text = [ "clipboard" ]
@@ -283,6 +284,9 @@ window-set-cursor-position = [ ]
 window-set-ignore-cursor-events = [ ]
 window-start-dragging = [ ]
 window-print = [ ]
+app-all = [ "app-show", "app-hide" ]
+app-show = [ ]
+app-hide = [ ]
 config-json5 = [ "tauri-macros/config-json5" ]
 config-toml = [ "tauri-macros/config-toml" ]
 icon-ico = [ "infer", "ico" ]

core/tauri/build.rs

@@ -131,6 +131,8 @@ fn main() {
 
   alias_module("clipboard", &["write-text", "read-text"], api_all);
 
+  alias_module("app", &["show", "hide"], api_all);
+
   let checked_features_out_path =
     Path::new(&std::env::var("OUT_DIR").unwrap()).join("checked_features");
   std::fs::write(