67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
from __future__ import annotations
|
|
|
|
import asyncio
|
|
|
|
from textual import events
|
|
from textual.driver import Driver
|
|
from textual.geometry import Size
|
|
|
|
|
|
class HeadlessDriver(Driver):
|
|
"""A do-nothing driver for testing."""
|
|
|
|
@property
|
|
def is_headless(self) -> bool:
|
|
"""Is the driver running in 'headless' mode?"""
|
|
return True
|
|
|
|
def _get_terminal_size(self) -> tuple[int, int]:
|
|
if self._size is not None:
|
|
return self._size
|
|
width: int | None = 80
|
|
height: int | None = 25
|
|
import shutil
|
|
|
|
try:
|
|
width, height = shutil.get_terminal_size()
|
|
except (AttributeError, ValueError, OSError):
|
|
try:
|
|
width, height = shutil.get_terminal_size()
|
|
except (AttributeError, ValueError, OSError):
|
|
pass
|
|
width = width or 80
|
|
height = height or 25
|
|
return width, height
|
|
|
|
def write(self, data: str) -> None:
|
|
"""Write data to the output device.
|
|
|
|
Args:
|
|
data: Raw data.
|
|
"""
|
|
# Nothing to write as this is a headless driver.
|
|
|
|
def start_application_mode(self) -> None:
|
|
"""Start application mode."""
|
|
loop = asyncio.get_running_loop()
|
|
|
|
def send_size_event() -> None:
|
|
"""Send first resize event."""
|
|
terminal_size = self._get_terminal_size()
|
|
width, height = terminal_size
|
|
textual_size = Size(width, height)
|
|
event = events.Resize(textual_size, textual_size)
|
|
asyncio.run_coroutine_threadsafe(
|
|
self._app._post_message(event),
|
|
loop=loop,
|
|
)
|
|
|
|
send_size_event()
|
|
|
|
def disable_input(self) -> None:
|
|
"""Disable further input."""
|
|
|
|
def stop_application_mode(self) -> None:
|
|
"""Stop application mode, restore state."""
|
|
# Nothing to do
|