Fix crash on launch on macOS

cmd/WiiUDownloader/main.go

@@ -7,6 +7,8 @@ import (
 	"runtime"
 
 	wiiudownloader "github.com/Xpl0itU/WiiUDownloader"
+	"github.com/gotk3/gotk3/glib"
+	"github.com/gotk3/gotk3/gtk"
 )
 
 func main() {
@@ -31,8 +33,18 @@ func main() {
 			os.Setenv("GSETTINGS_SCHEMA_DIR", filePath)
 		}
 	}
-	win := NewMainWindow(wiiudownloader.GetTitleEntries(wiiudownloader.TITLE_CATEGORY_GAME), logger)
+	gtk.Init(nil)
 
-	win.ShowAll()
-	Main()
+	app, err := gtk.ApplicationNew("io.github.xpl0itu.wiiudownloader", glib.APPLICATION_FLAGS_NONE)
+	if err != nil {
+		logger.Fatal(err.Error())
+	}
+	app.Connect("activate", func() {
+		win := NewMainWindow(app, wiiudownloader.GetTitleEntries(wiiudownloader.TITLE_CATEGORY_GAME), logger)
+		win.ShowAll()
+		app.AddWindow(win.window)
+		app.GetActiveWindow().Show()
+	})
+	app.Run(nil)
+	app.Quit()
 }

cmd/WiiUDownloader/mainwindow.go

@@ -26,7 +26,7 @@ const (
 )
 
 type MainWindow struct {
-	window                          *gtk.Window
+	window                          *gtk.ApplicationWindow
 	treeView                        *gtk.TreeView
 	titles                          []wiiudownloader.TitleEntry
 	searchEntry                     *gtk.Entry
@@ -41,16 +41,14 @@ type MainWindow struct {
 	lastSearchText                  string
 }
 
-func NewMainWindow(entries []wiiudownloader.TitleEntry, logger *wiiudownloader.Logger) *MainWindow {
-	gtk.Init(nil)
-
+func NewMainWindow(app *gtk.Application, entries []wiiudownloader.TitleEntry, logger *wiiudownloader.Logger) *MainWindow {
 	gSettings, err := gtk.SettingsGetDefault()
 	if err != nil {
 		logger.Error(err.Error())
 	}
 	gSettings.SetProperty("gtk-application-prefer-dark-theme", isDarkMode())
 
-	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
+	win, err := gtk.ApplicationWindowNew(app)
 	if err != nil {
 		logger.Fatal("Unable to create window:", err)
 	}
@@ -425,7 +423,7 @@ func (mw *MainWindow) ShowAll() {
 
 	mw.window.Add(mainvBox)
 
-	mw.window.ShowAll()
+	mainvBox.ShowAll()
 }
 
 func (mw *MainWindow) onRegionChange(button *gtk.CheckButton, region uint8) {
@@ -791,7 +789,3 @@ queueProcessingLoop:
 
 	return nil
 }
-
-func Main() {
-	gtk.Main()
-}

downloader.go

@@ -33,7 +33,7 @@ type ProgressWindow struct {
 	cancelled    bool
 }
 
-func CreateProgressWindow(parent *gtk.Window) (ProgressWindow, error) {
+func CreateProgressWindow(parent *gtk.ApplicationWindow) (ProgressWindow, error) {
 	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
 	if err != nil {
 		return ProgressWindow{}, err