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A collection of invalidations due to changes in which stylesheets affect a document.



  • A style sheet invalidation represents a kind of element or subtree that may need to be restyled. Whether it represents a whole subtree or just a single element is determined by the given InvalidationKind in StylesheetInvalidationSet’s maps.
  • Whether we should invalidate just the element, or the whole subtree within it.
  • The kind of change that happened for a given rule.