Method SetModel

combobox.go:372–415

SetModel sets the model of the ComboBox. It is required that mdl either implements walk.ListModel or walk.ReflectListModel or be a slice of pointers to struct or a []string.

(mdl interface{})

// It is required that mdl either implements walk.ListModel or
// walk.ReflectListModel or be a slice of pointers to struct or a []string.
func (cb *ComboBox) SetModel(mdl interface{}) error {
	model, ok := mdl.(ListModel)
	if !ok && mdl != nil {
		var err error
		if model, err = newReflectListModel(mdl); err != nil {
			return err
		}

		if _, ok := mdl.([]string); !ok {
			if badms, ok := model.(bindingAndDisplayMemberSetter); ok {
				var bindingMember string
				if cb.Editable() {
					bindingMember = cb.displayMember
				} else {
					bindingMember = cb.bindingMember
				}
				badms.setBindingMember(bindingMember)
				badms.setDisplayMember(cb.displayMember)
			}
		}
	}
	cb.providedModel = mdl

	if cb.model != nil {
		cb.detachModel()
	}

	cb.model = model
	cb.bindingValueProvider, _ = model.(BindingValueProvider)

	if model != nil {
		cb.attachModel()
	}

	if err := cb.resetItems(); err != nil {
		return err
	}

	if !cb.Editable() && model != nil && model.ItemCount() == 1 {
		cb.SetCurrentIndex(0)
	}

	return cb.Invalidate()
}

// BindingMember returns the member from the model of the ComboBox that is bound
// to a field of the data source managed by an associated DataBinder.