feat(ui): add method to exit eventloop

espanso-ui/src/lib.rs

@@ -15,10 +15,11 @@ pub mod linux;
 #[cfg(target_os = "macos")]
 pub mod mac;
 
-pub trait UIRemote {
+pub trait UIRemote: Send {
   fn update_tray_icon(&self, icon: TrayIcon);
   fn show_notification(&self, message: &str);
   fn show_context_menu(&self, menu: &menu::Menu);
+  fn exit(&self);
 }
 
 pub type UIEventCallback = Box<dyn Fn(event::UIEvent)>;

espanso-ui/src/win32/mod.rs

@@ -74,6 +74,7 @@ extern "C" {
     event_callback: extern "C" fn(_self: *mut Win32EventLoop, event: RawUIEvent),
   ) -> i32;
   pub fn ui_destroy(window_handle: *const c_void) -> i32;
+  pub fn ui_exit(window_handle: *const c_void) -> i32;
   pub fn ui_update_tray_icon(window_handle: *const c_void, index: i32);
   pub fn ui_show_notification(window_handle: *const c_void, message: *const u16);
   pub fn ui_show_context_menu(window_handle: *const c_void, payload: *const c_char);
@@ -348,6 +349,16 @@ impl UIRemote for Win32Remote {
       }
     }
   }
+
+  fn exit(&self) {
+    let handle = self.handle.load(Ordering::Acquire);
+    if handle.is_null() {
+      error!("Unable to exit eventloop, pointer is null");
+      return;
+    }
+
+    unsafe { ui_exit(handle) };
+  }
 }
 
 #[allow(clippy::single_match)] // TODO: remove after another match is used

espanso-ui/src/win32/native.cpp

@@ -94,6 +94,12 @@ LRESULT CALLBACK ui_window_procedure(HWND window, unsigned int msg, WPARAM wp, L
   {
   case WM_DESTROY:
     PostQuitMessage(0);
+    
+    // Remove tray icon
+    if (variables->options.show_icon)
+    {
+      Shell_NotifyIcon(NIM_DELETE, &variables->nid);
+    }
 
     // Free the tray icons
     for (int i = 0; i < variables->options.icon_paths_count; i++)
@@ -316,6 +322,14 @@ int32_t ui_destroy(void *window)
   return -1;
 }
 
+void ui_exit(void *window)
+{
+  if (window)
+  {
+    PostMessage((HWND)window, WM_CLOSE, 0, 0);
+  }
+}
+
 void ui_update_tray_icon(void *window, int32_t index)
 {
   if (window)

espanso-ui/src/win32/native.h

@@ -54,6 +54,9 @@ extern "C" int32_t ui_eventloop(void * window, EventCallback callback);
 // Destroy the given window.
 extern "C" int32_t ui_destroy(void * window);
 
+// Send a termination event that exits the event loop
+extern "C" void ui_exit(void * window);
+
 // Updates the tray icon to the given one. The method accepts an index that refers to
 // the icon within the UIOptions.icon_paths array.
 extern "C" void ui_update_tray_icon(void * window, int32_t index);