textinput.go RawHistoryFolder

1package ui
2
3import renderer "github.com/bnema/vev-vt"
4
5// TextInput stores editable text as runes for terminal overlay input models.
6type TextInput struct {
7	runes []rune
8}
9
10func (t *TextInput) Insert(r rune) { t.runes = append(t.runes, r) }
11
12func (t *TextInput) Backspace() {
13	if len(t.runes) == 0 {
14		return
15	}
16	t.runes = t.runes[:len(t.runes)-1]
17}
18
19func (t *TextInput) Value() string { return string(t.runes) }
20
21func (t *TextInput) SetValue(value string) { t.runes = []rune(value) }
22
23// DrawInputLine draws prefix + value followed by a reverse-video caret cell.
24func DrawInputLine(f renderer.Frame, y int, prefix, value string, style renderer.Style, caretStyle ...renderer.Style) {
25	if y < 0 || y >= f.Height {
26		return
27	}
28	x := DrawText(f, 0, y, f.Width, prefix+value, style)
29	if x >= 0 && x < f.Width {
30		caret := style
31		caret.Inverse = true
32		if len(caretStyle) > 0 {
33			caret = caretStyle[0]
34		}
35		f.Set(x, y, renderer.Cell{Rune: ' ', Style: caret})
36	}
37}