[POC] Refactor virtualization resize observer to track individual forOf elements.#16809

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mkirova/resize-observer-refactor

Commits on Jan 22, 2026

chore(*): Wrap each row in container w resize observer and update.

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Commits on Jan 26, 2026

Merge branch 'master' into mkirova/resize-observer-refactor

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chore(*): Add cache for view sizes, use when updating caches after scroll.

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chore(*): Clean console logs.

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chore(*): Fix lint error.

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chore(*): Make override arg optional too.

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Commits on Jan 27, 2026

chore(*): Update cache for all views but update size cached only for active.

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chore(*): Use resize observer only for measurements.

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chore(*): Remove unnecessary recalc.

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chore(*): Add back since it still needs update in some scenarios.

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Commits on Jan 28, 2026

chore(*): Add sample with hgrid for measuring perf.

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chore(*): Fix wrapping container in hgrid. Remove DOM read ops on recalc.

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chore(*): Set null width to skip resize on attach/detach child grids.

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chore(*): Add container to size in all other grids as well.

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chore(*): Caches only for IgxGridForOfDirective. Retain old logic for base.

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Commits on Jan 29, 2026

chore(*): Fix timing so that tests do not disconnect.

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chore(*): Remove zone run since it's unnecessary.

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chore(*): Check if the await causes a disconnect in tests.

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chore(*): Update tests according to new structure.

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Commits on Jan 30, 2026

chore(*): Remove unnecessary size recalc during scroll position update.

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chore(*): Update groupBy tests according to new DOM structure.

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chore(*): Update test timing.

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chore(*): Clean up imports and fix formatting.

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