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| author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
|---|---|---|
| committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
| commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
| tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py | |
| download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz | |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py')
| -rw-r--r-- | contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py b/contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py new file mode 100644 index 0000000000..256231793a --- /dev/null +++ b/contrib/python/prompt-toolkit/py3/prompt_toolkit/layout/mouse_handlers.py @@ -0,0 +1,54 @@ +from collections import defaultdict +from typing import TYPE_CHECKING, Callable, DefaultDict + +from prompt_toolkit.mouse_events import MouseEvent + +if TYPE_CHECKING: + from prompt_toolkit.key_binding.key_bindings import NotImplementedOrNone + +__all__ = [ + "MouseHandler", + "MouseHandlers", +] + + +MouseHandler = Callable[[MouseEvent], "NotImplementedOrNone"] + + +class MouseHandlers: + """ + Two dimensional raster of callbacks for mouse events. + """ + + def __init__(self) -> None: + def dummy_callback(mouse_event: MouseEvent) -> "NotImplementedOrNone": + """ + :param mouse_event: `MouseEvent` instance. + """ + return NotImplemented + + # NOTE: Previously, the data structure was a dictionary mapping (x,y) + # to the handlers. This however would be more inefficient when copying + # over the mouse handlers of the visible region in the scrollable pane. + + # Map y (row) to x (column) to handlers. + self.mouse_handlers: DefaultDict[ + int, DefaultDict[int, MouseHandler] + ] = defaultdict(lambda: defaultdict(lambda: dummy_callback)) + + def set_mouse_handler_for_range( + self, + x_min: int, + x_max: int, + y_min: int, + y_max: int, + handler: Callable[[MouseEvent], "NotImplementedOrNone"], + ) -> None: + """ + Set mouse handler for a region. + """ + for y in range(y_min, y_max): + row = self.mouse_handlers[y] + + for x in range(x_min, x_max): + row[x] = handler |