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Cache hidden events setting

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Settings is too expensive to query in a hot code path, so this caches the value
on the MessagePanel component instead.
This commit is contained in:
J. Ryan Stinnett 2019-06-04 15:07:23 +01:00
parent e5abb2e089
commit 06547ef5b3
1 changed files with 6 additions and 1 deletions
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7
src/components/structures/MessagePanel.js
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@ -152,6 +152,11 @@ module.exports = React.createClass({
// Velocity requires
this._readMarkerGhostNode = null;
// Cache hidden events setting on mount since Settings is expensive to
// query, and we check this in a hot code path.
this._showHiddenEventsInTimeline =
SettingsStore.getValue("showHiddenEventsInTimeline");
this._isMounted = true;
},
@ -292,7 +297,7 @@ module.exports = React.createClass({
return false; // ignored = no show (only happens if the ignore happens after an event was received)
}
if (SettingsStore.getValue("showHiddenEventsInTimeline")) {
if (this._showHiddenEventsInTimeline) {
return true;
}