From 4f1a3b5f9ad05aa7b08715d48909a2b06ee2fcb1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 18:35:31 +0200 Subject: Adding upstream version 3.0.43. Signed-off-by: Daniel Baumann --- src/prompt_toolkit/layout/mouse_handlers.py | 56 +++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 src/prompt_toolkit/layout/mouse_handlers.py (limited to 'src/prompt_toolkit/layout/mouse_handlers.py') diff --git a/src/prompt_toolkit/layout/mouse_handlers.py b/src/prompt_toolkit/layout/mouse_handlers.py new file mode 100644 index 0000000..56a4edd --- /dev/null +++ b/src/prompt_toolkit/layout/mouse_handlers.py @@ -0,0 +1,56 @@ +from __future__ import annotations + +from collections import defaultdict +from typing import TYPE_CHECKING, Callable + +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 -- cgit v1.2.3