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Blinking on chat switching #39040

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merged 3 commits into from
Mar 28, 2024
Merged

Blinking on chat switching #39040

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9a2561c
fix ID
perunt Mar 27, 2024
5724807
move the comment to the top so it's more noticeable
perunt Mar 28, 2024
8ec3050
update comment
perunt Mar 28, 2024
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4 changes: 4 additions & 0 deletions src/pages/home/report/ReportActionsView.tsx
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Expand Up @@ -133,6 +133,10 @@ function ReportActionsView({
}, [route]);

const listID = useMemo(() => {
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@perunt Would you kindly add a comment above the listID declaration describing its role and why it is passed down to the FlatList component as (React) key instead of passing it to the existing extraData array here ?

I also asked in #38838 (comment) as part of #38838 (issue).

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Hey! Definitely, I'll put my comment up top so it's easier to spot. Thanks!

So, here's the deal: I need to make the whole list refresh itself from scratch. It's all about the virtualization thing the list does. Basically, this refresh trick is mostly needed when you're linking comments, especially when jumping from looking at a bunch of messages to just a few. The virtualization in FlatList gets a bit wonky when the amount of stuff shown shrinks as you move to a specific message. So, to keep everything looking right, we gotta refresh the whole list, not just poke the FlatList to update what it's already showing. So if we put it to extraData, the comment linking would lead to the wrong place in some specific cases

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let me check your links, will also leave this info there

if (!reportActionID) {
// We only trigger a change of the list ID for comment linking to ensure proper positioning
return listOldID;
}
isFirstLinkedActionRender.current = true;
const newID = generateNewRandomInt(listOldID, 1, Number.MAX_SAFE_INTEGER);
listOldID = newID;
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