gabotorresruiz opened a new pull request, #43624:
URL: https://github.com/apache/superset/pull/43624
### SUMMARY
Adds a new UI extension slot, `dashboard.slice.header.menu`, that lets a
deployment inject custom items into a chart's more-options ("…") menu on a
dashboard.
The slot is a function that receives the chart context (`sliceId`,
`sliceName`, `dashboardId`) and returns an array of `MenuItem`.
Returned items are prepended to the top of the menu, above the built-in
entries, followed by a divider.
An empty array injects nothing, so no dangling divider is added.
This mirrors the existing `dashboard.slice.header` component slot, but
returns menu data instead of a rendered component, since the host owns the menu
structure.
### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
Not applicable.
This adds an extension point with no built-in UI of its own; the visible
result depends on what a deployment registers against the slot.
### TESTING INSTRUCTIONS
Register the slot and confirm the item renders at the top of a chart's "…"
menu on a dashboard:
```ts
import { getExtensionsRegistry } from '@superset-ui/core';
getExtensionsRegistry().set('dashboard.slice.header.menu', ({ sliceName })
=> [
{ key: 'demo', label: `Ask about ${sliceName}`, onClick: () => {} },
]);
```
Run the unit tests:
```bash
cd superset-frontend
npm run test --
src/dashboard/components/SliceHeaderControls/SliceHeaderControls.test.tsx
```
The suite covers two behaviors: registered items render at the top of the
menu, and an empty array injects nothing.
### ADDITIONAL INFORMATION
- [ ] Has associated issue:
- [ ] Required feature flags:
- [ ] Changes UI
- [ ] Includes DB Migration (follow approval process in
[SIP-59](https://github.com/apache/superset/issues/13351))
- [ ] Migration is atomic, supports rollback & is backwards-compatible
- [ ] Confirm DB migration upgrade and downgrade tested
- [ ] Runtime estimates and downtime expectations provided
- [x] Introduces new feature or API
- [ ] Removes existing feature or API
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