alihan/textual
1
0
Fork 0
mirror of https://github.com/Textualize/textual.git synced 2025-10-17 02:38:12 +03:00
Code Issues Packages Projects Releases Wiki Activity

wording

Browse Source
This commit is contained in:
Will McGugan
2024-11-19 15:14:56 +00:00
parent c12fe839e9
commit 5cf1ced22f
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
docs/tutorial.md
View File

@@ -393,8 +393,11 @@ A recurring theme in Textual is that you rarely need to explicitly update a widg
It is possible: you can call [refresh()][textual.widget.Widget.refresh] to display new data.
However, Textual prefers to do this automatically via _reactive_ attributes.
You can declare a reactive attribute with [reactive][textual.reactive.reactive].
Let's use this feature to create a timer that displays elapsed time and keeps it updated.
Reactive attributes work like any other attribute, such as those you might set in an `__init__` method, but allow Textual to detect when you assign to them, in addition to some other [*superpowers*](./guide/reactivity.md).
To add a reactive attribute, import [reactive][textual.reactive.reactive] and create an instance in your class scope.
Let's see this an action, by adding reactives to our stopwatch which we will use to calculate the elapsed time when a Stopwatch is started.
```python title="stopwatch05.py" hl_lines="1 5 12-27 45"
--8<-- "docs/examples/tutorial/stopwatch05.py"