classic-ui/plugins/sessionStorage.js

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2022-04-22 06:05:56 +03:00
import { soliditySha3 } from 'web3-utils'
let isSessionStorageEnabled = null
try {
window.sessionStorage.setItem('test', 'test')
window.sessionStorage.removeItem('test')
isSessionStorageEnabled = true
} catch (e) {
isSessionStorageEnabled = false
}
const setItem = (key, value) => {
if (isSessionStorageEnabled) {
window.sessionStorage.setItem(
soliditySha3(key),
JSON.stringify({
data: value,
timeStamp: Date.now()
})
)
}
}
const getItem = (key) => {
if (isSessionStorageEnabled) {
const value = window.sessionStorage.getItem(soliditySha3(key))
try {
return JSON.parse(String(value))
} catch (err) {
return value
}
}
return undefined
}
const removeItem = (key) => {
if (isSessionStorageEnabled) {
return window.sessionStorage.removeItem(soliditySha3(key))
}
}
const clear = () => {
if (isSessionStorageEnabled) {
window.sessionStorage.clear()
}
}
const subscribe = (key, originalListener) => {
const listener = (event) => {
if (event.storageArea === window.sessionStorage && event.key === key) {
originalListener(event.newValue, event.oldValue)
}
}
window.addEventListener('storage', listener, false)
return listener
}
const unsubscribe = (listener) => {
window.removeEventListener('storage', listener, false)
}
export default (ctx, inject) => {
const sessionStorage = {
setItem,
getItem,
removeItem,
clear,
subscribe,
unsubscribe
}
ctx.$sessionStorage = sessionStorage
inject('sessionStorage', sessionStorage)
}