Slightly optimize spreadMode
toggling with ScrollMode.PAGE
set (PR 14112 follow-up)
#14280
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It shouldn't be necessary to iterate through all pages when using a non-default
spreadMode
, since we already know which page(s) should become visible.This code is a left-over from the initial (local) implementation that resulted in PR #14112, however I forgot to clean-up some things such as e.g. this loop.
Also fixes an outdated comment, see PR #14204 which removed the mentioned data-structure.