[lgnbhl]

Rebuilds DataGridServer() on MUI X Data Grid's own server-side data source and releases it as 0.2.0, which includes one breaking change.

What changes

• MUI owns the grid state. Pagination, sort and filter state, the reset to page 1, the loading overlay and the handling of stale responses are now MUI's (dataSource, MIT edition). The custom controlled-state layer is gone.
• Each page is answered over HTTP. The grid POSTs every request to an endpoint scoped to the Shiny session (session$registerDataObj(), as DT does). rows = <full data> works as before, but paging no longer re-runs renderReact(). An error while producing a page is reported in the R console and the request fails cleanly; the output no longer breaks.
• New getRows argument. It's MUI's getRows contract in R: a function of the request returning list(rows, rowCount), the shape processGridParams() already returns.
• Filter code in R is table-driven: one entry per MUI operator.

Breaking

• rowCount is defunct. It now errors and points to getRows. That mode re-rendered a pre-sliced page from input$<inputId>, so the rows could belong to a different request than the one the footer showed.
• Smaller changes:
  • input$<inputId>$filter_model$items now holds only the filters MUI applies.
  • The server-mode props are forced by MUI rather than set by R.
  • Two grids sharing an inputId no longer raise an error.

All breaking changes are listed in NEWS, and the vignette has a "Migrating from rowCount" section.

Bugs fixed (wrong rows or counts)

• The date is filter matched nothing ("0 of 0"); not matched everything.
• An initialState with only pageSize showed "No results found." under a "1–25 of 500" footer.
• autoPageSize was ignored, so the grid showed 100 rows.
• The boolean is filter matched nothing; emptied filters blanked the grid.

The initialState and autoPageSize bugs were confirmed by running main in a headless browser.

Testing

• R tests: all pass, including tests of the HTTP endpoint, getRows and the rowCount error.
• R CMD check --as-cran: 0 errors, 0 warnings. The only note ("unable to verify current time") comes from the machine.
• shinytest2 in headless Chrome: paging, filters (including dates), sorting, the quick filter with hidden columns, initialState, autoPageSize, filterDebounceMs, data changing in R, a slow getRows backend with rapid clicks, two grids in Shiny modules, and a static HTML page.
• Not tested: shinylive/webR.

🤖 Generated with Claude Code

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Codecov Report

❌ Patch coverage is 94.04762% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.79%. Comparing base (9e8721f) to head (c5ddcaf).

Files with missing lines	Patch %	Lines
R/components.R	94.04%	10 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #19      +/-   ##
==========================================
- Coverage   98.10%   96.79%   -1.32%     
==========================================
  Files           4        4              
  Lines         369      405      +36     
==========================================
+ Hits          362      392      +30     
- Misses          7       13       +6     

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