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from textual.app import App, ComposeResult
from textual.screen import ModalScreen
from textual.widgets import Button, TextArea
class TextAreaDialog(ModalScreen):
BINDINGS = [("escape", "dismiss")]
def compose(self) -> ComposeResult:
yield TextArea(
tab_behavior="focus", # the default
)
yield Button("Submit")
class TextAreaDialogApp(App):
def on_mount(self) -> None:
self.push_screen(TextAreaDialog())
async def test_escape_key_when_tab_behavior_is_focus():
"""Regression test for https://github.com/Textualize/textual/issues/4110
When the `tab_behavior` of TextArea is the default to shift focus,
pressing <Escape> should not shift focus but instead skip and allow any
parent bindings to run.
"""
app = TextAreaDialogApp()
async with app.run_test() as pilot:
# Sanity check
assert isinstance(pilot.app.screen, TextAreaDialog)
assert isinstance(pilot.app.focused, TextArea)
# Pressing escape should dismiss the dialog screen, not focus the button
await pilot.press("escape")
assert not isinstance(pilot.app.screen, TextAreaDialog)
async def test_escape_key_when_tab_behavior_is_indent():
"""When the `tab_behavior` of TextArea is indent rather than switch focus,
pressing <Escape> should instead shift focus.
"""
app = TextAreaDialogApp()
async with app.run_test() as pilot:
# Sanity check
assert isinstance(pilot.app.screen, TextAreaDialog)
assert isinstance(pilot.app.focused, TextArea)
pilot.app.query_one(TextArea).tab_behavior = "indent"
# Pressing escape should focus the button, not dismiss the dialog screen
await pilot.press("escape")
assert isinstance(pilot.app.screen, TextAreaDialog)
assert isinstance(pilot.app.focused, Button)
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