rewrite

playground/bugt/main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/app"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/data/binding"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+	"strconv"
+)
+
+var w fyne.Window
+
+func main() {
+	a := app.NewWithID("io.fyne.demo")
+	a.SetIcon(theme.FyneLogo())
+	w = a.NewWindow("Fyne Demo")
+	Regen(w)
+	w.Resize(fyne.NewSize(1080, 720))
+	w.ShowAndRun()
+}
+
+func Regen(w fyne.Window) {
+	tabs := container.NewDocTabs()
+	for _, datum := range generateData(100) {
+		tabs.Append(newItemTab(&datum))
+	}
+	w.SetContent(tabs)
+}
+
+func generateData(n int) (result []int) {
+	for i := 0; i < n; i++ {
+		result = append(result, i)
+	}
+	return
+}
+
+func newItemTab(i *int) *container.TabItem {
+	c := container.NewVBox(
+		BindIntWithEntry(i),
+		widget.NewButton("Regen", func() {
+			Regen(w)
+		}),
+	)
+	return container.NewTabItemWithIcon(strconv.Itoa(*i), theme.MenuIcon(), c)
+}
+
+func BindIntWithLabel(k *int) *widget.Label {
+	b := binding.BindInt(k)
+	return widget.NewLabelWithData(binding.IntToString(b))
+}
+
+func BindIntWithEntry(k *int) *widget.Entry {
+	b := binding.BindInt(k)
+	return widget.NewEntryWithData(binding.IntToString(b))
+}