Improve pattern rendering performance in the inserter#66053
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madhusudhand wants to merge 1 commit intotrunkfrom
Closed
Improve pattern rendering performance in the inserter#66053madhusudhand wants to merge 1 commit intotrunkfrom
madhusudhand wants to merge 1 commit intotrunkfrom
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madhusudhand
added
[Type] Bug
madhusudhand
requested review from
MaggieCabrera,
draganescu,
getdave and
mikachan
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Size Change: -3 B (0%) Total Size: 1.77 MB
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ramonjd
reviewed
Oct 15, 2024
| } ) } | ||
| { shownPatterns.length < blockPatterns.length && ( | ||
| <BlockPatternPlaceholder /> | ||
| ) } |
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This PR removes the flickering when selecting blocks completely for me. 🥇
I just need help in understanding the logic changes.
In trunk, a BlockPatternPlaceholder is rendered in the map() callback for each block pattern not in shownPatterns.
Here, it's a single BlockPatternPlaceholder if shownPatterns length is less than blockPatterns length.
Is that right?
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The block pattern renders about 20 patterns per page, and the shownPatterns are 0, 5, 10, 15 and 20 (async)
and the BlockPatternPlaceholder is rendered for every pattern that is not shown (20 times initially, then 15 etc..)
When it was first introduced here, its not given any height. I assume placeholder introduced to occupy space for the pattern when it is not rendered yet.
But in a later change, the placeholder is set with 100% height.
In the current state, it is unnecessary to render 20 empty blocks with 100% height, instead rendering one single placeholder block is enough to show empty space in the initial view and until there are patterns to render. (That's what my understanding of the placeholder pattern)
It is shown until complete list of patterns are rendered and removed after.
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I have created #66114 and I think it improves the rendering much better.
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Closing this since #66159 fixes the issue. |
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What?
fixes: #65920
It fixes the re-rendering by directly rendering the
shownPatternsinstead of conditionally rendering allblockPatternsEven this triggers a re-render, but since a pattern preview is memoized, it doesn't cause pattern to render again.
Before:
After:
Testing Instructions