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tests for auto refresh

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This commit is contained in:
Will McGugan
2022-08-18 10:20:03 +01:00
parent f81f4484ca
commit c717dec982
8 changed files with 82 additions and 45 deletions
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2
docs/examples/introduction/clock.py
View File

@@ -7,7 +7,7 @@ from textual.widget import Widget
class Clock(Widget):
def on_mount(self):
self.styles.content_align = ("center", "middle")
self.set_interval(1, self.refresh)
self.auto_refresh = 1.0
def render(self):
return datetime.now().strftime("%c")

8
docs/examples/introduction/clock01.py
View File

@@ -7,15 +7,15 @@ from textual.widget import Widget
class Clock(Widget):
def on_mount(self):
self.styles.content_align = ("center", "middle")
self.set_interval(1, self.refresh)
self.auto_refresh = 1.0
def render(self):
return datetime.now().strftime("%c")
return datetime.now().strftime("%X")
class ClockApp(App):
def on_mount(self):
self.mount(Clock())
def compose(self):
yield Clock()
app = ClockApp()

44
src/textual/app.py
View File

@@ -47,6 +47,7 @@ from ._event_broker import NoHandler, extract_handler_actions
from .binding import Bindings, NoBinding
from .css.query import NoMatchingNodesError
from .css.stylesheet import Stylesheet
from .drivers.headless_driver import HeadlessDriver
from .design import ColorSystem
from .devtools.client import DevtoolsClient, DevtoolsConnectionError, DevtoolsLog
from .devtools.redirect_output import StdoutRedirector
@@ -162,7 +163,7 @@ class App(Generic[ReturnType], DOMNode):
_init_uvloop()
super().__init__()
self.features: frozenset[FeatureFlag] = parse_features(os.getenv("TEXTUAL", ""))
self.features: set[FeatureFlag] = parse_features(os.getenv("TEXTUAL", ""))
self.console = Console(
file=(open(os.devnull, "wt") if self.is_headless else sys.__stdout__),
@@ -539,17 +540,23 @@ class App(Generic[ReturnType], DOMNode):
keys, action, description, show=show, key_display=key_display
)
def run(self, quit_after: float | None = None) -> ReturnType | None:
def run(
self, quit_after: float | None = None, headless: bool = False
) -> ReturnType | None:
"""The main entry point for apps.
Args:
quit_after (float | None, optional): Quit after a given number of seconds, or None
to run forever. Defaults to None.
headless (bool, optional): Run in "headless" mode (don't write to stdout).
Returns:
ReturnType | None: _description_
"""
if headless:
self.features.add("headless")
async def run_app() -> None:
if quit_after is not None:
self.set_timer(quit_after, self.shutdown)
@@ -932,16 +939,9 @@ class App(Generic[ReturnType], DOMNode):
self.set_interval(0.5, self.css_monitor, name="css monitor")
self.log("[b green]STARTED[/]", self.css_monitor)
self._running = True
try:
load_event = events.Load(sender=self)
await self.dispatch_message(load_event)
process_messages = super().process_messages
driver = self._driver = self.driver_class(self.console, self)
driver.start_application_mode()
driver.enable_bracketed_paste()
try:
with redirect_stdout(StdoutRedirector(self.devtools, self._log_file)): # type: ignore
async def run_process_messages():
mount_event = events.Mount(sender=self)
await self.dispatch_message(mount_event)
@@ -950,11 +950,29 @@ class App(Generic[ReturnType], DOMNode):
self.refresh()
await self.animator.start()
await self._ready()
await super().process_messages()
await process_messages()
await self.animator.stop()
await self.close_all()
self._running = True
try:
load_event = events.Load(sender=self)
await self.dispatch_message(load_event)
driver: Driver
if self.is_headless:
driver = self._driver = HeadlessDriver(self.console, self)
else:
driver = self._driver = self.driver_class(self.console, self)
driver.start_application_mode()
try:
if self.is_headless:
await run_process_messages()
else:
with redirect_stdout(StdoutRedirector(self.devtools, self._log_file)): # type: ignore
await run_process_messages()
finally:
driver.disable_bracketed_paste()
driver.stop_application_mode()
except Exception as error:
self.on_exception(error)

23
src/textual/dom.py
View File

@@ -20,6 +20,7 @@ from .css.parse import parse_declarations
from .css.styles import Styles, RenderStyles
from .css.query import NoMatchingNodesError
from .message_pump import MessagePump
from ._timer import Timer
if TYPE_CHECKING:
from .app import App
@@ -71,8 +72,30 @@ class DOMNode(MessagePump):
# A mapping of class names to Styles set in COMPONENT_CLASSES
self._component_styles: dict[str, RenderStyles] = {}
self._auto_refresh: float | None = None
self._auto_refresh_timer: Timer | None = None
super().__init__()
@property
def auto_refresh(self) -> float | None:
return self._auto_refresh
@auto_refresh.setter
def auto_refresh(self, interval: float | None) -> None:
if self._auto_refresh_timer is not None:
self._auto_refresh_timer.stop_no_wait()
self._auto_refresh_timer = None
if interval is not None:
self._auto_refresh_timer = self.set_interval(
interval, self._automatic_refresh
)
self._auto_refresh = interval
def _automatic_refresh(self) -> None:
"""Perform an automatic refresh (set with auto_refresh property)."""
self.refresh()
def __init_subclass__(cls, inherit_css: bool = True) -> None:
super().__init_subclass__()
cls._inherit_css = inherit_css

12
src/textual/driver.py
View File

@@ -41,18 +41,6 @@ class Driver(ABC):
click_event = events.Click.from_event(event)
self.send_event(click_event)
def enable_bracketed_paste(self) -> None:
"""Write the ANSI escape code `ESC[?2004h`, which
enables bracketed paste mode."""
self.console.file.write("\x1b[?2004h")
self.console.file.flush()
def disable_bracketed_paste(self) -> None:
"""Write the ANSI escape code `ESC[?2004l`, which
disables bracketed paste mode."""
self.console.file.write("\x1b[?2004l")
self.console.file.flush()
@abstractmethod
def start_application_mode(self) -> None:
...

10
src/textual/drivers/linux_driver.py
View File

@@ -70,6 +70,14 @@ class LinuxDriver(Driver):
# Note: E.g. lxterminal understands 1000h, but not the urxvt or sgr
# extensions.
def _enable_bracketed_paste(self) -> None:
"""Enable bracketed paste mode."""
self.console.file.write("\x1b[?2004h")
def _disable_bracketed_paste(self) -> None:
"""Disable bracketed pasgte mode."""
self.console.file.write("\x1b[?2004l")
def _disable_mouse_support(self) -> None:
write = self.console.file.write
write("\x1b[?1000l") #
@@ -130,6 +138,7 @@ class LinuxDriver(Driver):
send_size_event()
self._key_thread.start()
self._request_terminal_sync_mode_support()
self._enable_bracketed_paste()
def _request_terminal_sync_mode_support(self):
self.console.file.write("\033[?2026$p")
@@ -168,6 +177,7 @@ class LinuxDriver(Driver):
pass
def stop_application_mode(self) -> None:
self._disable_bracketed_paste()
self.disable_input()
if self.attrs_before is not None:

13
src/textual/features.py
View File

@@ -14,7 +14,7 @@ FEATURES: Final = {"devtools", "debug", "headless"}
FeatureFlag = Literal["devtools", "debug", "headless"]
def parse_features(features: str) -> frozenset[FeatureFlag]:
def parse_features(features: str) -> set[FeatureFlag]:
"""Parse features env var
Args:
@@ -24,11 +24,8 @@ def parse_features(features: str) -> frozenset[FeatureFlag]:
frozenset[FeatureFlag]: A frozen set of known features.
"""
features_set = frozenset(
set(
feature.strip().lower()
for feature in features.split(",")
if feature.strip()
features_set = set(
feature.strip().lower() for feature in features.split(",") if feature.strip()
).intersection(FEATURES)
)
return cast("frozenset[FeatureFlag]", features_set)
return cast("set[FeatureFlag]", features_set)

3
src/textual/widget.py
View File

@@ -36,7 +36,8 @@ from .dom import DOMNode
from .geometry import Offset, Region, Size, Spacing, clamp
from .layouts.vertical import VerticalLayout
from .message import Message
from .reactive import Reactive, watch
from .reactive import Reactive
from ._timer import Timer
if TYPE_CHECKING: