async.go RawHistoryFolder

1package edit
2
3import (
4	"context"
5	"unicode/utf8"
6)
7
8// AsyncClipboard starts an asynchronous paste. The callback must be delivered
9// to the UI loop, never invoked by a Wayland reader or transport goroutine.
10// Unlike Clipboard.ReadText, ReadTextAsync does not wait for another process.
11// Implementations must cap reads at limit bytes plus one and honor cancellation.
12type AsyncClipboard interface {
13	ReadTextAsync(ctx context.Context, limit int, deliver func([]byte, error)) error
14	WriteText([]byte) error
15}
16
17// PasteAsync applies a completed paste on the UI loop. It is the counterpart
18// of Paste for asynchronous transports. It retains the same UTF-8/size checks.
19func (s *State) PasteAsync(data []byte, err error) (bool, error) {
20	if err != nil {
21		return false, err
22	}
23	if len(data) > MaxClipboardBytes || !utf8.Valid(data) {
24		return false, nil
25	}
26	return s.Insert(string(data)), nil
27}