Change tab title dynamically

[dorianpercic]

Hi everyone,

is there a possibility to change a tab pane title dynamically? Since I would like to make a counter inside a title basically, showing amount of unread messages. I have tried doing it with a reactive attribute, but this does not work, and furthermore I could not find an appropriate function in order to do this.
Sample code below:

from textual.app import App, ComposeResult
from textual.reactive import reactive
from textual.widgets import TabbedContent, TabPane
from textual.widgets._header import Header
from textual.widgets._footer import Footer

class TestApp(App[str]):
    tab1_title = reactive("Tab1")
    def on_key(self, event):
        self.tab1_title = str(event.key) + "_test"
    
    def compose(self) -> ComposeResult:
        yield Header(show_clock=True)
        with TabbedContent(initial="tab1", id="tabbed-content"):
            with TabPane(title=tab1_title, id="tab1"):
                pass
        yield Footer(show_command_palette=True)

if __name__ == "__main__":
    app = TestApp()
    message = app.run()
    print(message if message else "")

Environment:
Textual: v4.0.0
Python: v3.11.2
OS: Debian GNU/Linux 12 (bookworm)

[TomJGooding]

You can update the Tab.label for the tab returned by TabbedContent.get_tab.

[dorianpercic]

Ah yes this works, thank you!