feat: add keepComponentAlive to all 4 framework Row Detail plugins

[ghiscoding]

Adds keepComponentAlive option to preserve row detail component state when scrolling

fixes #2651

Why Opt-In?

By default, row detail components are destroyed and recreated when scrolling out of viewport. This is memory-efficient for large datasets. However, this destroys component state (form input, nested grid filters, scroll position, etc.).

The new keepComponentAlive flag enables keeping components alive in memory so state is preserved. It's opt-in by default (false) to maintain backward compatibility and avoid unexpected memory overhead for existing applications with large datasets.

Changes

• Added keepComponentAlive?: boolean option to RowDetailViewOption interface
• Implemented keep-alive feature across all 4 framework row detail plugins:
  • Angular: Uses ApplicationRef.detachView() and attachView()
  • Aurelia: Detaches/reattaches slots from DOM
  • React: Persists container element for root re-render
  • Vue: Stores component instance and reattaches to fresh container
• Added UI toggle to Example45 demos in all 4 frameworks
• Updated comprehensive documentation in all 5 row-detail.md files
• Fixed critical bug: rowDetailViewOptions getter now reads from getOptions() instead of stale gridOptions.rowDetailView
• Refactored Vue implementation to use tryCatchWithReturn utility for consistent error handling
• Push a fix to properly detect when Row Detail comes back to viewport visible range

Use Cases

Enable keepComponentAlive when you need to preserve component state:

• Nested grids with active filters/sort
• Forms with user input that shouldn't be lost
• Components with expensive initialization
• Long scroll lists where re-render cost is significant

Trade-offs

• Memory: Components stay in memory; impacts large datasets with many expanded rows
• Performance: Avoids re-render cost when scrolling back; negligible overhead if few rows expanded
• Graceful fallback: If reattach fails, automatically falls back to fresh re-render

References

Related to discussion: Row Detail Plugin - Official approach for rendering Angular components in v10.x (standalone)? · ghiscoding/slickgrid-universal · Discussion #2651

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.0%. Comparing base (7d3e7d8) to head (b54a7e7).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

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##           master    #2653   +/-   ##
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  Coverage   100.0%   100.0%           
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  Files         200      200           
  Lines       25325    25330    +5     
  Branches     8954     8954           
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+ Hits        25325    25330    +5     

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universal	100.0% <100.0%> (ø)

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commit: b54a7e7

[ghiscoding]

@jr01 this might interest you since I know you are a user of Row Detail with Angular-Slickgrid... for reference, I asked copilot to see if the discussion opened in #2651 is fixable and this PR tries to fix those concerns by adding a new flag keepComponentAlive (I barely provided guidance to copilot).

So I wouldn't mind your feedback on this PR if you have any special thoughts. Thanks

[jr01]

Thanks @ghiscoding ), this looks really great!! I think the opt-in default is exactly right: it solves the RowDetail state-loss problem while preserving the existing memory-efficient behavior for large grids.

I also like that an explicit collapse still destroys the component, and the viewport re-entry edge-case handling and regression tests. This gives us a clean path to use stateful RowDetail components (nested grids, forms, expensive initialization) without workarounds.

No blockers from my side. Great work, and thanks! 💯 🥇 Looking forward to applying this.