37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
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/* eslint-disable no-console */
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export default ({ store, isHMR, app }, inject) => {
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inject('preventMultitabs', main)
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}
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function main(store) {
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const id = Date.now()
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window.id = id
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window.localStorage.setItem('firstTab', id)
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const onLocalStorageEvent = function(e) {
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// the second tab will write its id to this key. The first one will notice it
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if (e.key === 'firstTab') {
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const newID = Date.now()
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console.log('Another tab detected. Setting the new page id', newID)
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setTimeout(() => {
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window.localStorage.secondTab = newID // this is going to be a message for the second tab
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}, 200)
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}
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// the second tab proccesses the message
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if (e.key === 'secondTab' && window.id.toString() === window.localStorage.firstTab) {
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console.log('There is another tab that already opened. We will close this one')
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window.multipleTabsDetected = true
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window.onbeforeunload = null
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window.alert(
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'Multiple tabs opened. Your page will be closed. Please only use single instance of https://tornado.cash'
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)
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window.location = 'https://twitter.com/tornadocash'
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}
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}
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// this event will only trigger when a window other than itself makes changes to local storage.
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setTimeout(() => {
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window.addEventListener('storage', onLocalStorageEvent, false)
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}, 100)
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}
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