| 164 | } |
| 165 | |
| 166 | func (tty *devTty) NotifyResize(resizeQ chan<- bool) { |
| 167 | |
| 168 | sigQ := tty.sig |
| 169 | tty.sig = nil |
| 170 | |
| 171 | if sigQ != nil { |
| 172 | signal.Stop(sigQ) |
| 173 | close(sigQ) |
| 174 | } |
| 175 | |
| 176 | if resizeQ == nil { |
| 177 | return |
| 178 | } |
| 179 | |
| 180 | sigQ = make(chan os.Signal, 1) |
| 181 | signal.Notify(sigQ, syscall.SIGWINCH) |
| 182 | |
| 183 | tty.sig = sigQ |
| 184 | |
| 185 | go func() { |
| 186 | for range sigQ { |
| 187 | select { |
| 188 | case resizeQ <- true: |
| 189 | default: // queue full, so nvm. |
| 190 | } |
| 191 | } |
| 192 | }() |
| 193 | } |
| 194 | |
| 195 | // NewDevTty opens a /dev/tty based Tty. |
| 196 | func NewDevTty() (Tty, error) { |