## Description
This PR Adds the ability for users of the library to provide code block
actions for code blocks rendered in markdown (or anything that uses the
TextViewStyle).
I tried to match the existing Fns:
```rs
pub fn heading_font_size<F>(mut self, f: F) -> Self
where
F: Fn(u8, Pixels) -> Pixels + Send + Sync + 'static,
{
self.heading_font_size = Some(Arc::new(f));
self
}
```
New code in text_view:
```rs
pub fn code_block_actions<F, E>(mut self, f: F) -> Self
where
F: Fn(SharedString, Option<SharedString>, &mut Window, &mut App) -> E
+ Send
+ Sync
+ 'static,
E: IntoElement,
{
self.code_block_actions = Some(Arc::new(move |code, lang, window, cx| {
f(code, lang, window, cx).into_any_element()
}));
self
}
```
Example on adding a simple copy button:
```rs
TextView::markdown("preview", content, window, cx)
.code_block_actions(|code, _lang, _window, _cx| {
Clipboard::new("copy").value(code)
})
```
## Screenshot
| Before | After |
| ---------------------------- | --------------------------- |
| <img width="630" height="527" alt="Screenshot 2025-12-01 at 8 37
50 PM"
src="https://github.com/user-attachments/assets/7ac3b8d9-da85-42f8-9d36-cc74848890ea"
/> | <img width="627" height="535" alt="Screenshot 2025-12-01 at 8 38
22 PM"
src="https://github.com/user-attachments/assets/cae67b43-bba8-4834-a060-4bd63d34aefd"
/> |
## How to Test
Please describe the tests that you ran to verify your changes. Provide
instructions so we can reproduce.
## Checklist
- [x] I have read the [CONTRIBUTING](../CONTRIBUTING.md) document and
followed the guidelines.
- [x] Reviewed the changes in this PR and confirmed AI generated code
(If any) is accurate.
- [x] Passed `cargo run` for story tests related to the changes.
- [ ] Tested macOS, Windows and Linux platforms performance (if the
change is platform-specific)
---------
Co-authored-by: Jason Lee <huacnlee@gmail.com>
31bab9dcc3