feat(dock): try to setup macos dock handler

feat(dock): try to setup macos dock handler

feat(dock): try to setup macos dock handler

Author: greenhat616

backend/tauri/src/utils/dock.rs

@@ -3,9 +3,17 @@ pub mod macos {
     extern crate cocoa;
     extern crate objc;
 
-    use cocoa::appkit::{NSApp, NSApplication, NSApplicationActivationPolicy};
-    use objc::runtime::YES;
-
+    use cocoa::{
+        appkit::{NSApp, NSApplication, NSApplicationActivationPolicy, NSWindow},
+        base::{id, nil, BOOL, NO, YES},
+    };
+    use objc::{
+        class,
+        declare::ClassDecl,
+        msg_send,
+        runtime::{Object, Sel},
+        sel, sel_impl,
+    };
     pub unsafe fn show_dock_icon() {
         let app = NSApp();
         app.setActivationPolicy_(
@@ -20,4 +28,38 @@ pub mod macos {
             NSApplicationActivationPolicy::NSApplicationActivationPolicyAccessory,
         );
     }
+
+    pub fn setup_dock_click_handler() {
+        unsafe {
+            let app = NSApp();
+            let superclass = class!(NSObject);
+            let mut decl = ClassDecl::new("AppDelegate", superclass).unwrap();
+            decl.add_method(
+                sel!(applicationShouldHandleReopen:hasVisibleWindows:),
+                reopen_handler as extern "C" fn(&mut Object, Sel, id, BOOL) -> BOOL,
+            );
+            decl.register();
+            let delegate: id = msg_send![class!(AppDelegate), new];
+            app.setDelegate_(delegate);
+        }
+    }
+
+    extern "C" fn reopen_handler(_: &mut Object, _: Sel, _: id, has_visible_windows: BOOL) -> BOOL {
+        unsafe {
+            let app = NSApp();
+            if app.activationPolicy() == NSApplicationActivationPolicy::Accessory {
+                if has_visible_windows == NO {
+                    // resolve crate window
+                    let handle = crate::core::handle::Handle::global();
+                    let app_handle = handle.app_handle.lock();
+                    if let Some(app_handle) = app_handle.as_ref() {
+                        crate::utils::resolve::create_window(app_handle);
+                    }
+                }
+                NO
+            } else {
+                YES
+            }
+        }
+    }
 }

backend/tauri/src/utils/resolve.rs

@@ -85,6 +85,8 @@ pub fn find_unused_port() -> Result<u16> {
 pub fn resolve_setup(app: &mut App) {
     #[cfg(target_os = "macos")]
     app.set_activation_policy(tauri::ActivationPolicy::Accessory);
+    #[cfg(target_os = "macos")]
+    crate::utils::dock::macos::setup_dock_click_handler();
     app.listen_global("react_app_mounted", move |_| {
         tracing::debug!("Frontend React App is mounted, reset open window counter");
         reset_window_open_counter();