df9c1fed2a
This is an Element project (in the vector-im repo) so the Copyright should be for New Vector: it was incorrectly attributed to the foundation for some files (and some files were missing headers).
71 lines
2.1 KiB
TypeScript
71 lines
2.1 KiB
TypeScript
/*
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Copyright 2022 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { useEffect } from "react";
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// https://stackoverflow.com/a/9039885
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function isIOS() {
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return (
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[
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"iPad Simulator",
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"iPhone Simulator",
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"iPod Simulator",
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"iPad",
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"iPhone",
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"iPod",
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].includes(navigator.platform) ||
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// iPad on iOS 13 detection
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(navigator.userAgent.includes("Mac") && "ontouchend" in document)
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);
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}
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export function usePageUnload(callback: () => void) {
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useEffect(() => {
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let pageVisibilityTimeout: ReturnType<typeof setTimeout>;
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function onBeforeUnload(event: PageTransitionEvent) {
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if (event.type === "visibilitychange") {
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if (document.visibilityState === "visible") {
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clearTimeout(pageVisibilityTimeout);
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} else {
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// Wait 5 seconds before closing the page to avoid accidentally leaving
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// TODO: Make this configurable?
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pageVisibilityTimeout = setTimeout(() => {
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callback();
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}, 5000);
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}
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} else {
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callback();
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}
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}
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// iOS doesn't fire beforeunload event, so leave the call when you hide the page.
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if (isIOS()) {
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window.addEventListener("pagehide", onBeforeUnload);
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document.addEventListener("visibilitychange", onBeforeUnload);
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}
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window.addEventListener("beforeunload", onBeforeUnload);
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return () => {
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window.removeEventListener("pagehide", onBeforeUnload);
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document.removeEventListener("visibilitychange", onBeforeUnload);
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window.removeEventListener("beforeunload", onBeforeUnload);
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clearTimeout(pageVisibilityTimeout);
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};
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}, [callback]);
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}
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