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

react/features/participants-pane/reducer.ts

@@ -0,0 +1,54 @@
+import ReducerRegistry from '../base/redux/ReducerRegistry';
+
+import {
+    PARTICIPANTS_PANE_CLOSE,
+    PARTICIPANTS_PANE_OPEN,
+    SET_VOLUME
+} from './actionTypes';
+import { REDUCER_KEY } from './constants';
+
+export interface IParticipantsPaneState {
+    isOpen: boolean;
+    participantsVolume: {
+        [participantId: string]: number;
+    };
+}
+
+const DEFAULT_STATE = {
+    isOpen: false,
+    participantsVolume: {}
+};
+
+/**
+ * Listen for actions that mutate the participants pane state.
+ */
+ReducerRegistry.register(
+    REDUCER_KEY, (state: IParticipantsPaneState = DEFAULT_STATE, action) => {
+        switch (action.type) {
+        case PARTICIPANTS_PANE_CLOSE:
+            return {
+                ...state,
+                isOpen: false
+            };
+
+        case PARTICIPANTS_PANE_OPEN:
+            return {
+                ...state,
+                isOpen: true
+            };
+
+        case SET_VOLUME:
+            return {
+                ...state,
+                participantsVolume: {
+                    ...state.participantsVolume,
+
+                    [action.participantId]: action.volume
+                }
+            };
+
+        default:
+            return state;
+        }
+    }
+);