Can't interact with DataTable after loading state in macOS Terminal.app

[frankie567]

When mounting a DataTable, it can directly be interacted with using arrow keys on the keyboard (I suppose it gets automatic focus).

However, this behavior breaks under macOS Terminal.app, after switching the loading state. When loading is set to False, the table appears but the arrow keys have no effect.

With WezTerm, keyboard input is also inactive after loading, but since it detects the mouse cursor (contrary to Terminal.app), the "focus" can be revived.

Reproducible example

from asyncio import sleep
from random import randint

from textual import work
from textual.app import App, ComposeResult
from textual.widgets import DataTable

ROWS = [
    ("lane", "swimmer", "country", "time"),
    (4, "Joseph Schooling", "Singapore", 50.39),
    (2, "Michael Phelps", "United States", 51.14),
    (5, "Chad le Clos", "South Africa", 51.14),
    (6, "László Cseh", "Hungary", 51.14),
    (3, "Li Zhuhao", "China", 51.26),
    (8, "Mehdy Metella", "France", 51.58),
    (7, "Tom Shields", "United States", 51.73),
    (1, "Aleksandr Sadovnikov", "Russia", 51.84),
    (10, "Darren Burns", "Scotland", 51.84),
]


class DataApp(App):
    CSS = """
    DataTable {
        height: 1fr;
    }
    """

    def compose(self) -> ComposeResult:
        yield DataTable()

    def on_mount(self) -> None:
        data_table = self.query_one(DataTable)
        data_table.loading = True
        self.load_data()

    @work
    async def load_data(self) -> None:
        await sleep(randint(2, 10))
        data_table = self.query_one(DataTable)
        data_table.add_columns(*ROWS[0])
        data_table.add_rows(ROWS[1:])
        data_table.loading = False


if __name__ == "__main__":
    app = DataApp()
    app.run()

Textual Diagnostics

Versions

Name	Value
Textual	0.46.0
Rich	13.7.0

Python

Name	Value
Version	3.12.0
Implementation	CPython
Compiler	Clang 15.0.0 (clang-1500.0.40.1)
Executable	/Users/fvoron/Development/polar/server/.venv/bin/python

Operating System

Name	Value
System	Darwin
Release	23.1.0
Version	Darwin Kernel Version 23.1.0: Mon Oct 9 21:27:24 PDT 2023; root:xnu-10002.41.9~6/RELEASE_ARM64_T6000

Terminal

Name	Value
Terminal Application	Apple_Terminal (452)
TERM	xterm-256color
COLORTERM	Not set
FORCE_COLOR	Not set
NO_COLOR	Not set

Rich Console options

Name	Value
size	width=245, height=62
legacy_windows	False
min_width	1
max_width	245
is_terminal	True
encoding	utf-8
max_height	62
justify	None
overflow	None
no_wrap	False
highlight	None
markup	None
height	None

[github-actions]

We found the following entries in the FAQ which you may find helpful:

• Why doesn't Textual look good on macOS?
• How can I select and copy text in a Textual app?
• How do I center a widget in a screen?

Feel free to close this issue if you found an answer in the FAQ. Otherwise, please give us a little time to review.

This is an automated reply, generated by FAQtory