[v3 linux] api changes (#2830)

v3/pkg/application/application_linux.go

@@ -83,7 +83,7 @@ func (m *linuxApp) run() error {
 
 	// Add a hook to the ApplicationDidFinishLaunching event
 	// FIXME: add Wails specific events - i.e. Shouldn't platform specific ones be translated to Wails events?
-	m.parent.On(events.Mac.ApplicationDidFinishLaunching, func() {
+	m.parent.On(events.Mac.ApplicationDidFinishLaunching, func(evt *Event) {
 		// Do we need to do anything now?
 		fmt.Println("events.Mac.ApplicationDidFinishLaunching received!")
 	})
@@ -107,6 +107,12 @@ func (m *linuxApp) registerWindow(window pointer, id uint) {
 	m.windowsLock.Unlock()
 }
 
+func (m *linuxApp) isDarkMode() bool {
+	// FIXME: How do we detect this?
+	// Maybe this helps: https://askubuntu.com/questions/1469869/how-does-firefox-detect-light-dark-theme-change-on-kde-systems
+	return false
+}
+
 func newPlatformApp(parent *App) *linuxApp {
 	name := strings.ToLower(strings.Replace(parent.options.Name, " ", "", -1))
 	if name == "" {