// lost focus, setting back default text and color if needed.
func onTextDefaultFocusOut(widget *gtk.Entry, _ *gdk.Event, data textDefaultData) {
text, _ := widget.GetText()
data.key.IsDefault = text == ""
if data.key.IsDefault {
widget.HandlerBlock(data.cbID)
widget.SetText(data.text)
widget.HandlerUnblock(data.cbID)
context, _ := widget.GetStyleContext()
context.AddClass("DefaultValue")
}
}
// text changed by the user. Restore color and the ability to save the value.
func onTextDefaultChanged(entry *gtk.Entry, key *cftype.Key) {
key.IsDefault = false
context, _ := entry.GetStyleContext()
context.RemoveClass("DefaultValue")
}