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Prefer cached settings values in shouldHideEvent

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Signed-off-by: Robin Townsend <robin@robin.town>
This commit is contained in:
Robin Townsend 2021-06-05 01:25:01 -04:00
parent 48d3e41351
commit 13196b8146
1 changed files with 13 additions and 5 deletions
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18
src/shouldHideEvent.ts
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@ -17,6 +17,7 @@
import {MatrixEvent} from "matrix-js-sdk/src/models/event";
import SettingsStore from "./settings/SettingsStore";
import {IState} from "./components/structures/RoomView";
interface IDiff {
isMemberEvent: boolean;
@ -47,11 +48,18 @@ function memberEventDiff(ev: MatrixEvent): IDiff {
return diff;
}
export default function shouldHideEvent(ev: MatrixEvent): boolean {
// Wrap getValue() for readability. Calling the SettingsStore can be
// fairly resource heavy, so the checks below should avoid hitting it
// where possible.
const isEnabled = (name) => SettingsStore.getValue(name, ev.getRoomId());
/**
* Determines whether the given event should be hidden from timelines.
* @param ev The event
* @param ctx An optional RoomContext to pull cached settings values from to avoid
* hitting the settings store
*/
export default function shouldHideEvent(ev: MatrixEvent, ctx?: IState): boolean {
// Accessing the settings store directly can be expensive if done frequently,
// so we should prefer using cached values if a RoomContext is available
const isEnabled = ctx ?
name => ctx[name] :
name => SettingsStore.getValue(name, ev.getRoomId());
// Hide redacted events
if (ev.isRedacted() && !isEnabled('showRedactions')) return true;