How do I change the header title from "Textual Application" to something else?

[jeffwright13]

OK this is driving me nuts. I cannot figure out how to configure/change the Header (or Footer) widgets so they will display a title of my choosing. The code doesn't seem to provide an easy way to do this...there is no "title" attribute in the constructor, nor are there obvious methods by way of which to set the title after instantiation. What am I missing here?

[willmcgugan]

Can you set the title attribute in the header?

[jeffwright13]

There is no setter that I can see. There is a getter, via the @property decorator (which implements a read only attribute). The code accepts setting "title" when I try set via __setattr__, but the application itself still shows the header widget with title "Textual Application".

https://github.com/jeffwright13/pytest-fold/blob/issue25/pytest_fold/tuit2.py
(line 52 is the start of the header definition code)

[willmcgugan]

Why setattr? What happens if you do header.title = “Howdy” ?

[jeffwright13]

I used __setattr__ because I did not think I could set the attribute title directly.

When I set directly via header.title, the header widget still displays "Textual Application".

    async def on_mount(self) -> None:
        header = Header(tall=False)
        header.title = "bar"

[tusharsadhwani]

I just peeked at the code, and in src/textual/app.py, the App class takes a title parameter in its constructor.

[jeffwright13]

So, set title at the App level and not the Widget level?

[willmcgugan]

Both should work.

app.title = “foo”

Or

header.title = “bar”

[jeffwright13]

The code I quoted above instantiates the PytestFold app (which is subclassed from App) and specifies a 'title' in the constructor, but the console still shows the default "Textual Application" text.

I'll try your suggestion and see what happens.

[jeffwright13]

No joy. :-( I feel like I"m missing something basic here!

[jeffwright13]

I ended up inserting the following line in my app's on_mount() method and the header is now showing my title:

self.title = "Woof!"

[Green1208]

Petal to metal