Method RemoveAt

widgetlist.go:138–171

(index int)

}

func (l *WidgetList) RemoveAt(index int) error {
	item := l.items[index]

	if item == l.widgetInRemoval {
		return nil
	}

	observer := l.observer
	widget := item.window.(Widget)

	if observer != nil {
		l.widgetInRemoval = item
		defer func() {
			l.widgetInRemoval = nil
		}()

		if err := observer.onRemovingWidget(index, widget); err != nil {
			return err
		}
	}

	l.items = append(l.items[:index], l.items[index+1:]...)

	if observer != nil {
		if err := observer.onRemovedWidget(index, widget); err != nil {
			l.insertIntoSlice(index, widget)
			return err
		}
	}

	item.form = nil

	return nil
}