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Prioritise and reduce the amount of events decrypted on application startup (#5980)

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Germain 2021-05-12 12:19:53 +01:00 • committed by GitHub
commit 91133ed35b
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4 changed files with 65 additions and 24 deletions
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5
src/components/structures/MatrixChat.tsx
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@ -908,6 +908,11 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
let presentedId = roomInfo.room_alias || roomInfo.room_id;
const room = MatrixClientPeg.get().getRoom(roomInfo.room_id);
if (room) {
// Not all timeline events are decrypted ahead of time anymore
// Only the critical ones for a typical UI are
// This will start the decryption process for all events when a
// user views a room
room.decryptAllEvents();
const theAlias = Rooms.getDisplayAliasForRoom(room);
if (theAlias) {
presentedId = theAlias;

13
src/components/structures/TimelinePanel.js
View file

@ -38,6 +38,7 @@ import {haveTileForEvent} from "../views/rooms/EventTile";
import {UIFeature} from "../../settings/UIFeature";
import {objectHasDiff} from "../../utils/objects";
import {replaceableComponent} from "../../utils/replaceableComponent";
import { arrayFastClone } from "../../utils/arrays";
const PAGINATE_SIZE = 20;
const INITIAL_SIZE = 20;
@ -1141,6 +1142,18 @@ class TimelinePanel extends React.Component {
// get the list of events from the timeline window and the pending event list
_getEvents() {
const events = this._timelineWindow.getEvents();
// `arrayFastClone` performs a shallow copy of the array
// we want the last event to be decrypted first but displayed last
// `reverse` is destructive and unfortunately mutates the "events" array
arrayFastClone(events)
.reverse()
.forEach(event => {
if (event.shouldAttemptDecryption()) {
event.attemptDecryption(MatrixClientPeg.get()._crypto);
}
});
const firstVisibleEventIndex = this._checkForPreJoinUISI(events);
// Hold onto the live events separately. The read receipt and read marker