| /** |
| * 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. |
| */ |
| const isServer = typeof window === "undefined"; |
| |
| function resizeHandler(entries: any[]): void { |
| for (const entry of entries) { |
| const listeners = entry.target.__resizeListeners__ || []; |
| if (listeners.length) { |
| listeners.forEach((fn: () => any) => { |
| fn(); |
| }); |
| } |
| } |
| } |
| |
| export function addResizeListener(element: any, fn: () => unknown): void { |
| if (isServer) return; |
| if (!element.__resizeListeners__) { |
| element.__resizeListeners__ = []; |
| element.__ro__ = new ResizeObserver(resizeHandler); |
| element.__ro__.observe(element); |
| } |
| element.__resizeListeners__.push(fn); |
| } |
| |
| export function removeResizeListener(element: any, fn: () => unknown): void { |
| if (!element || !element.__resizeListeners__) return; |
| element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1); |
| if (!element.__resizeListeners__.length) { |
| element.__ro__.disconnect(); |
| } |
| } |
| |
| export function triggerWindowResize(): void { |
| const event = document.createEvent("HTMLEvents"); |
| event.initEvent("resize", true, true); |
| (event as any).eventType = "message"; |
| window.dispatchEvent(event); |
| } |