✨ Add option to linger after copy (might be useful under X11)

main.go

@@ -5,7 +5,9 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
+	"log"
 	"sync"
+	"time"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/app"
@@ -19,7 +21,8 @@ import (
 //go:embed data/gitmojis.json data/images
 var data embed.FS
 
-var preferredTheme = flag.String("theme", "light", "Specifiy the theme to be used. dark/light")
+var preferredTheme = flag.String("theme", "light", "Specify the theme to be used. dark/light")
+var linger = flag.String("linger", "", "If specified, linger for the given duration (e.g. 10s) before actually closing.")
 
 type Gitmoji struct {
 	Emoji       string
@@ -64,12 +67,23 @@ func main() {
 	}
 
 	a := app.New()
+
 	switch *preferredTheme {
 	case "dark":
 		a.Settings().SetTheme(theme.DarkTheme())
 	default:
 		a.Settings().SetTheme(theme.LightTheme())
 	}
+
+	var lingerDuration *time.Duration = nil
+	if *linger != "" {
+		if d, err := time.ParseDuration(*linger); err != nil {
+			log.Fatalf("invalid linger time: %v\n", err)
+		} else {
+			lingerDuration = &d
+		}
+	}
+
 	w := a.NewWindow("Gitmoji Picker")
 	w.CenterOnScreen()
 
@@ -192,6 +206,10 @@ func main() {
 
 			if currentId > -1 {
 				w.Clipboard().SetContent(currentEntries[currentId].Emoji)
+				if lingerDuration != nil {
+					w.Hide()
+					time.Sleep(*lingerDuration)
+				}
 				w.Close()
 				return true
 			}