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Handle exceptions in the tui context managers

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This commit is contained in:
Kovid Goyal 2021-09-16 18:28:29 +05:30
parent eaeece8177
commit e9d648d37c
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 12 additions and 6 deletions
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18
kittens/tui/operations.py
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@ -315,23 +315,29 @@ def reset_state(normal_screen: bool = True) -> str:
@contextmanager
def pending_update(write: Callable[[str], None]) -> Generator[None, None, None]:
write(set_mode(Mode.PENDING_UPDATE))
yield
write(reset_mode(Mode.PENDING_UPDATE))
try:
yield
finally:
write(reset_mode(Mode.PENDING_UPDATE))
@contextmanager
def cursor(write: Callable[[str], None]) -> Generator[None, None, None]:
write(SAVE_CURSOR)
yield
write(RESTORE_CURSOR)
try:
yield
finally:
write(RESTORE_CURSOR)
@contextmanager
def alternate_screen(f: Optional[IO[str]] = None) -> Generator[None, None, None]:
f = f or sys.stdout
print(set_mode(Mode.ALTERNATE_SCREEN), end='', file=f)
yield
print(reset_mode(Mode.ALTERNATE_SCREEN), end='', file=f)
try:
yield
finally:
print(reset_mode(Mode.ALTERNATE_SCREEN), end='', file=f)
@contextmanager