func (t *TextBoxController) AddCarets(transform SelectionTransform) {
t.storeCaretLocationsNextEdit = true
up := t.selections.Transform(0, transform)
for _, s := range up {
interval.Merge(&t.selections, s)
}
t.onSelectionChanged.Fire()
}
func TestTextSelectionMergeExtendEnd(t *testing.T) {
s1 := TextSelection{6, 9, true}
s2 := TextSelection{8, 15, false}
l := TextSelectionList{s1}
interval.Merge(&l, s2)
test.AssertEquals(t, TextSelectionList{
TextSelection{6, 15, false},
}, l)
}
func TestTextSelectionMergeDuplicate0Len(t *testing.T) {
s1 := TextSelection{2, 2, false}
s2 := TextSelection{2, 2, true}
l := TextSelectionList{s1}
interval.Merge(&l, s2)
test.AssertEquals(t, TextSelectionList{
TextSelection{2, 2, true},
}, l)
}
func TestTextSelectionMergeEncompass(t *testing.T) {
s1 := TextSelection{6, 9, false}
s2 := TextSelection{5, 10, true}
l := TextSelectionList{s1}
interval.Merge(&l, s2)
test.AssertEquals(t, TextSelectionList{
TextSelection{5, 10, true},
}, l)
}
func TestTextSelectionMergeAtStart(t *testing.T) {
s1 := TextSelection{6, 9, true}
s2 := TextSelection{6, 7, false}
l := TextSelectionList{s1}
interval.Merge(&l, s2)
test.AssertEquals(t, TextSelectionList{
TextSelection{6, 9, false},
}, l)
}
func (l TextSelectionList) Transform(from int, transform func(i int) int) TextSelectionList {
res := TextSelectionList{}
for _, s := range l {
start := s.start
end := s.end
if start >= from {
start = transform(start)
}
if end >= from {
end = transform(end)
}
interval.Merge(&res, TextSelection{start, end, s.caretAtStart})
}
return res
}
func (l TextSelectionList) TransformCarets(from int, transform func(i int) int) TextSelectionList {
res := TextSelectionList{}
for _, s := range l {
if s.caretAtStart && s.start >= from {
s.start = transform(s.start)
} else if s.end >= from {
s.end = transform(s.end)
}
if s.start > s.end {
tmp := s.start
s.start = s.end
s.end = tmp
s.caretAtStart = !s.caretAtStart
}
interval.Merge(&res, s)
}
return res
}
func (t *TextBoxController) updateSelectionsForEdits(edits []TextBoxEdit) {
min := 0
max := len(t.text)
selections := TextSelectionList{}
for _, selection := range t.selections {
for _, e := range edits {
at := e.At
delta := e.Delta
if selection.start > at {
selection.start += delta
}
if selection.end >= at {
selection.end += delta
}
}
if selection.end < selection.start {
selection.end = selection.start
}
selection.start = math.Clamp(selection.start, min, max)
selection.end = math.Clamp(selection.end, min, max)
interval.Merge(&selections, selection)
}
t.selections = selections
}
func TestTextSelectionMergeOne(t *testing.T) {
s := TextSelection{5, 10, true}
l := TextSelectionList{}
interval.Merge(&l, s)
test.AssertEquals(t, TextSelectionList{s}, l)
}
func (t *TextBoxController) AddSelection(s TextSelection) {
t.storeCaretLocationsNextEdit = true
interval.Merge(&t.selections, s)
t.onSelectionChanged.Fire()
}
