Add the MultiRoomViewStore

src/stores/MultiRoomViewStore.ts

@@ -0,0 +1,64 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+import { logger } from "matrix-js-sdk/src/logger";
+
+import { RoomViewStore } from "./RoomViewStore";
+import { type MatrixDispatcher } from "../dispatcher/dispatcher";
+import { type SdkContextClass } from "../contexts/SDKContext";
+import { Action } from "../dispatcher/actions";
+
+export class MultiRoomViewStore {
+    /**
+     * Map from room-id to RVS instance.
+     */
+    private stores: Map<string, RoomViewStore> = new Map();
+
+    public constructor(
+        private dispatcher: MatrixDispatcher,
+        private sdkContextClass: SdkContextClass,
+    ) {}
+
+    /**
+     * Get a RVS instance for the room identified by the given roomId.
+     */
+    public getRoomViewStoreForRoom(roomId: string): RoomViewStore {
+        console.log(`Create RVS: ${roomId}`);
+        // Get existing store / create new store
+        const store = this.stores.has(roomId)
+            ? this.stores.get(roomId)!
+            : new RoomViewStore(this.dispatcher, this.sdkContextClass, roomId);
+
+        // RoomView component does not render the room unless you call viewRoom
+        store.viewRoom({
+            action: Action.ViewRoom,
+            room_id: roomId,
+            metricsTrigger: undefined,
+        });
+
+        // Cache the store, okay to do even if the store is already in the map
+        this.stores.set(roomId, store);
+
+        return store;
+    }
+
+    /**
+     * Remove a RVS instance that was created by {@link getRoomViewStoreForRoom}.
+     */
+    public removeRoomViewStore(roomId: string): void {
+        console.log(`Remove RVS: ${roomId}`);
+        const didRemove = this.stores.delete(roomId);
+        if (!didRemove) {
+            logger.warn(`removeRoomViewStore called with ${roomId} but no store exists for this room.`);
+        }
+    }
+
+    public dispose(): void {
+        for (const id of this.stores.keys()) {
+            this.removeRoomViewStore(id);
+        }
+    }
+}