Method SetSlice

core/list.go:409–433

SetSlice sets the source slice that we are viewing. This ReMakes the view for this slice if different. Note: it is important to at least set an empty slice of the desired type at the start to enable initial configuration.

(sl any)

// Note: it is important to at least set an empty slice of
// the desired type at the start to enable initial configuration.
func (lb *ListBase) SetSlice(sl any) *ListBase {
	if reflectx.AnyIsNil(sl) {
		lb.Slice = nil
		return lb
	}
	// TODO: a lot of this garbage needs to be cleaned up.
	// New is not working!
	newslc := false
	if reflect.TypeOf(sl).Kind() != reflect.Pointer { // prevent crash on non-comparable
		newslc = true
	} else {
		newslc = lb.Slice != sl
	}
	if !newslc {
		lb.MakeIter = 0
		return lb
	}

	lb.SetSliceBase()
	lb.Slice = sl
	lb.sliceUnderlying = reflectx.Underlying(reflect.ValueOf(lb.Slice))
	lb.isArray = reflectx.NonPointerType(reflect.TypeOf(sl)).Kind() == reflect.Array
	lb.elementValue = reflectx.SliceElementValue(sl)
	return lb
}

// rowFromEventPos returns the widget row, slice index, and
// whether the index is in slice range, for given event position.