Method OnAdd

core/widget.go:279–290

OnAdd is called when widgets are added to a parent. It sets the scene of the widget to its widget parent. It should be called by all other OnAdd functions defined by widget types.

()

// It should be called by all other OnAdd functions defined
// by widget types.
func (wb *WidgetBase) OnAdd() {
	if pwb := wb.parentWidget(); pwb != nil {
		wb.Scene = pwb.Scene
	}
	if wb.Parts != nil {
		// the Scene of the Parts may not have been set yet if they were made in Init
		wb.Parts.Scene = wb.Scene
	}
	if wb.Scene != nil && wb.Scene.WidgetInit != nil {
		wb.Scene.WidgetInit(wb.This.(Widget))
	}
}

// setScene sets the Scene pointer for this widget and all of its children.
// This can be necessary when creating widgets outside the usual New* paradigm,