perf(dashboard): Virtualization POC (#21438)

superset-frontend/src/utils/isDashboardVirtualizationEnabled.ts

@@ -0,0 +1,30 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+export enum DASHBOARD_VIRTUALIZATION_MODE {
+  NONE = 'NONE',
+  VIEWPORT = 'VIEWPORT',
+  PAGINATED = 'PAGINATED',
+}
+
+export const isDashboardVirtualizationEnabled = (
+  virtualizationMode: DASHBOARD_VIRTUALIZATION_MODE,
+) =>
+  virtualizationMode === DASHBOARD_VIRTUALIZATION_MODE.VIEWPORT ||
+  virtualizationMode === DASHBOARD_VIRTUALIZATION_MODE.PAGINATED;