1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
from textual.app import App, ComposeResult, RenderResult
from textual.reactive import reactive
from textual.widgets import Footer, Static
class Counter(Static, can_focus=True):
"""A counter that can be incremented and decremented by pressing keys."""
BINDINGS = [
("up,k", "change_count(1)", "Increment"), # (1)!
("down,j", "change_count(-1)", "Decrement"),
]
count = reactive(0)
def render(self) -> RenderResult:
return f"Count: {self.count}"
def action_change_count(self, amount: int) -> None: # (2)!
self.count += amount
class CounterApp(App[None]):
CSS_PATH = "counter.tcss"
def compose(self) -> ComposeResult:
yield Counter()
yield Counter()
yield Counter()
yield Footer()
if __name__ == "__main__":
app = CounterApp()
app.run()
|
