Make threads events indexed by the index manager (#7442)

src/components/structures/ThreadView.tsx

@@ -135,16 +135,7 @@ export default class ThreadView extends React.Component<IProps, IState> {
     private setupThread = (mxEv: MatrixEvent) => {
         let thread = this.props.room.threads.get(mxEv.getId());
         if (!thread) {
-            const client = MatrixClientPeg.get();
-            // Do not attach this thread object to the event for now
-            // TODO: When local echo gets reintroduced it will be important
-            // to add that back in, and the threads model should go through the
-            // same reconciliation algorithm as events
-            thread = new Thread(
-                [mxEv],
-                this.props.room,
-                client,
-            );
+            thread = this.props.room.createThread([mxEv]);
         }
         thread.on(ThreadEvent.Update, this.updateThread);
         thread.once(ThreadEvent.Ready, this.updateThread);

src/utils/EventUtils.ts

@@ -17,7 +17,6 @@ limitations under the License.
 import { EventStatus, MatrixEvent } from 'matrix-js-sdk/src/models/event';
 import { EventType, MsgType, RelationType } from "matrix-js-sdk/src/@types/event";
 import { MatrixClient } from 'matrix-js-sdk/src/client';
-import { Thread } from 'matrix-js-sdk/src/models/thread';
 import { logger } from 'matrix-js-sdk/src/logger';
 import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
@@ -194,13 +193,7 @@ export async function fetchInitialEvent(
             const rootEventData = await client.fetchRoomEvent(roomId, initialEvent.threadRootId);
             const rootEvent = new MatrixEvent(rootEventData);
             const room = client.getRoom(roomId);
-            const thread = new Thread(
-                [rootEvent],
-                room,
-                client,
-            );
-            thread.addEvent(initialEvent);
-            room.threads.set(thread.id, thread);
+            room.createThread([rootEvent]);
         } catch (e) {
             logger.warn("Could not find root event: " + initialEvent.threadRootId);
         }