[v3] Improve OnShutdown (#3190)

* [v3] Improve OnShutdown

* add change log

mkdocs-website/docs/en/changelog.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [linux] add onKeyPress logic to convert linux keypress into an accelerator @[Atterpac](https://github.com/Atterpac) in[#3022](https://github.com/wailsapp/wails/pull/3022])
 - [linux] add task `run:linux` by [@marcus-crane](https://github.com/marcus-crane) in [#3146](https://github.com/wailsapp/wails/pull/3146)
 - export `SetIcon` method by  @almas1992 in [PR](https://github.com/wailsapp/wails/pull/3147)
+- Improve `OnShutdown` by  @almas1992 in [PR](https://github.com/wailsapp/wails/pull/3189)
 
 ### Fixed
 

v3/pkg/application/application.go

@@ -291,10 +291,6 @@ type App struct {
 	// Keybindings
 	keyBindings map[string]func(window *WebviewWindow)
 
-	// OnShutdown is called when the application is about to quit.
-	// This is useful for cleanup tasks.
-	// The shutdown process blocks until this function returns
-	OnShutdown         func()
 	performingShutdown bool
 }
 
@@ -609,8 +605,8 @@ func (a *App) Quit() {
 		return
 	}
 	a.performingShutdown = true
-	if a.OnShutdown != nil {
-		a.OnShutdown()
+	if a.options.OnShutdown != nil {
+		a.options.OnShutdown()
 	}
 	InvokeSync(func() {
 		a.windowsLock.RLock()

v3/pkg/application/options_application.go

@@ -51,6 +51,11 @@ type Options struct {
 
 	// KeyBindings is a map of key bindings to functions
 	KeyBindings map[string]func(window *WebviewWindow)
+
+	// OnShutdown is called when the application is about to quit.
+	// This is useful for cleanup tasks.
+	// The shutdown process blocks until this function returns
+	OnShutdown func()
 }
 
 // AssetOptions defines the configuration of the AssetServer.