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from textual.app import App, ComposeResult
from textual.containers import Horizontal
from textual.reactive import reactive
from textual.widgets import Button, RichLog
class ValidateApp(App):
CSS_PATH = "validate01.tcss"
count = reactive(0)
def validate_count(self, count: int) -> int:
"""Validate value."""
if count < 0:
count = 0
elif count > 10:
count = 10
return count
def compose(self) -> ComposeResult:
yield Horizontal(
Button("+1", id="plus", variant="success"),
Button("-1", id="minus", variant="error"),
id="buttons",
)
yield RichLog(highlight=True)
def on_button_pressed(self, event: Button.Pressed) -> None:
if event.button.id == "plus":
self.count += 1
else:
self.count -= 1
self.query_one(RichLog).write(f"count = {self.count}")
if __name__ == "__main__":
app = ValidateApp()
app.run()
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