// got focus, removing default text if any.
func onTextDefaultFocusIn(widget *gtk.Entry, _ *gdk.Event, data textDefaultData) {
if data.key.IsDefault {
widget.HandlerBlock(data.cbID)
widget.SetText("")
widget.HandlerUnblock(data.cbID)
}
}
// 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")
}
}