func applyChangesGradually(progressBar *gtk3.ProgressBar, assistant *gtk3.Assistant) bool {
fraction := progressBar.GetFraction()
fraction = fraction + 0.05
if fraction < 1.0 {
progressBar.SetFraction(fraction)
return true
}
assistant.Destroy()
return false
}
func createPage3(assistant *gtk3.Assistant) {
label := gtk3.NewLabel("This is a confirmation page, press 'Apply' to apply changes")
label.Show()
assistant.AppendPage(label)
assistant.SetPageType(label, gtk3.GtkAssistantPage.CONFIRM)
assistant.SetPageComplete(label, true)
assistant.SetPageTitle(label, "Confirmation")
}
func onEntryChanged(assistant *gtk3.Assistant, data ...interface{}) {
pageNumber := assistant.GetCurrentPage()
currentPage := assistant.GetNthPage(pageNumber)
entry := data[0].(*gtk3.Entry)
textLen := entry.GetTextLength()
if textLen > 0 {
assistant.SetPageComplete(currentPage, true)
} else {
assistant.SetPageComplete(currentPage, false)
}
}
func createPage4(assistant *gtk3.Assistant) *gtk3.ProgressBar {
progressBar := gtk3.NewProgressBar()
progressBar.SetHalign(gtk3.GtkAlign.CENTER)
progressBar.SetValign(gtk3.GtkAlign.CENTER)
progressBar.Show()
assistant.AppendPage(progressBar)
assistant.SetPageType(progressBar, gtk3.GtkAssistantPage.PROGRESS)
assistant.SetPageTitle(progressBar, "Applying changes")
// this prevents assistant window from being closed while we're "busy" applying changes
assistant.SetPageComplete(progressBar, false)
return progressBar
}
func createPage2(assistant *gtk3.Assistant) {
box := gtk3.NewVBox(12)
box.SetBorderWidth(12)
checkButton := gtk3.NewCheckButtonWithLabel("This is optional data, you may continue even if you do not check this")
box.PackStart(checkButton, false, false, 0)
box.ShowAll()
assistant.AppendPage(box)
assistant.SetPageComplete(box, true)
assistant.SetPageTitle(box, "Page 2")
}
func createPage1(assistant *gtk3.Assistant) {
box := gtk3.NewHBox(12)
box.SetBorderWidth(12)
label := gtk3.NewLabel("You must fill out this entry to continue")
box.PackStart(label, false, false, 0)
entry := gtk3.NewEntry()
entry.SetActivatesDefault(true)
box.PackStart(entry, true, true, 0)
entry.Connect("changed", onEntryChanged, assistant)
box.ShowAll()
assistant.AppendPage(box)
assistant.SetPageTitle(box, "Page 1")
assistant.SetPageType(box, gtk3.GtkAssistantPage.INTRO)
}