snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

react/features/video-layout/subscriber.ts

@@ -0,0 +1,40 @@
+import StateListenerRegistry from '../base/redux/StateListenerRegistry';
+import { equals } from '../base/redux/functions';
+import { isFollowMeActive } from '../follow-me/functions';
+
+import { virtualScreenshareParticipantsUpdated } from './actions';
+import { getAutoPinSetting, updateAutoPinnedParticipant } from './functions';
+import logger from './logger';
+
+StateListenerRegistry.register(
+    /* selector */ state => state['features/base/participants'].sortedRemoteVirtualScreenshareParticipants,
+    /* listener */ (sortedRemoteVirtualScreenshareParticipants, store) => {
+        const oldScreenSharesOrder = store.getState()['features/video-layout'].remoteScreenShares || [];
+        const knownSharingParticipantIds = [ ...sortedRemoteVirtualScreenshareParticipants.keys() ];
+
+        // Filter out any participants which are no longer screen sharing
+        // by looping through the known sharing participants and removing any
+        // participant IDs which are no longer sharing.
+        const newScreenSharesOrder = oldScreenSharesOrder.filter(
+            participantId => knownSharingParticipantIds.includes(participantId));
+
+        // Make sure all new sharing participant get added to the end of the
+        // known screen shares.
+        knownSharingParticipantIds.forEach(participantId => {
+            if (!newScreenSharesOrder.includes(participantId)) {
+                newScreenSharesOrder.push(participantId);
+                logger.debug('Adding new screenshare to list', participantId);
+            }
+        });
+
+        if (!equals(oldScreenSharesOrder, newScreenSharesOrder)) {
+            logger.debug('Screenshare order changed, dispatching update');
+            store.dispatch(virtualScreenshareParticipantsUpdated(newScreenSharesOrder));
+
+            if (getAutoPinSetting() && !isFollowMeActive(store)) {
+                updateAutoPinnedParticipant(oldScreenSharesOrder, newScreenSharesOrder, store);
+            } else {
+                logger.debug('Auto pinning is disabled or Follow Me is active, skipping auto pinning of screenshare.');
+            }
+        }
+    });