| import random |
|
|
| from textual.containers import Horizontal, Vertical |
| from textual.app import App, ComposeResult |
| from textual.widgets import Button, Static |
|
|
|
|
| class Thing(Static): |
| def on_show(self) -> None: |
| self.scroll_visible() |
|
|
|
|
| class AddRemoveApp(App): |
| DEFAULT_CSS = """ |
| #buttons { |
| dock: top; |
| height: auto; |
| } |
| #buttons Button { |
| width: 1fr; |
| } |
| #items { |
| height: 100%; |
| overflow-y: scroll; |
| } |
| Thing { |
| height: 5; |
| background: $panel; |
| border: tall $primary; |
| margin: 1 1; |
| content-align: center middle; |
| } |
| """ |
|
|
| def on_mount(self) -> None: |
| self.count = 0 |
|
|
| def compose(self) -> ComposeResult: |
| yield Vertical( |
| Horizontal( |
| Button("Add", variant="success", id="add"), |
| Button("Remove", variant="error", id="remove"), |
| Button("Remove random", variant="warning", id="remove_random"), |
| id="buttons", |
| ), |
| Vertical(id="items"), |
| ) |
|
|
| def on_button_pressed(self, event: Button.Pressed) -> None: |
| if event.button.id == "add": |
| self.count += 1 |
| self.query("#items").first().mount( |
| Thing(f"Thing {self.count}", id=f"thing{self.count}") |
| ) |
| elif event.button.id == "remove": |
| things = self.query("#items Thing") |
| if things: |
| things.last().remove() |
|
|
| elif event.button.id == "remove_random": |
| things = self.query("#items Thing") |
| if things: |
| random.choice(things).remove() |
|
|
| self.app.bell() |
|
|
|
|
| app = AddRemoveApp() |
|
|
| if __name__ == "__main__": |
| app.run() |
|
|
