| /** |
| * 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. |
| */ |
| let scrollTopDashboardInterval: any; |
| const SCROLL_STEP = 120; |
| const INTERVAL_DELAY = 50; |
| |
| export default function handleScroll(dropPosition: string) { |
| if (dropPosition === 'SCROLL_TOP') { |
| if (!scrollTopDashboardInterval) { |
| scrollTopDashboardInterval = setInterval(() => { |
| let scrollTop = document.documentElement.scrollTop - SCROLL_STEP; |
| if (scrollTop < 0) { |
| scrollTop = 0; |
| } |
| window.scroll({ |
| top: scrollTop, |
| behavior: 'smooth', |
| }); |
| }, INTERVAL_DELAY); |
| } |
| } |
| if (dropPosition !== 'SCROLL_TOP' && scrollTopDashboardInterval) { |
| clearInterval(scrollTopDashboardInterval); |
| scrollTopDashboardInterval = null; |
| } |
| } |
