| Path : /var/www/html/tool-ob/ToolsPortal/node_modules/@tanstack/query-core/src/ |
|
B-Con CMD Config cPanel C-Rdp D-Log Info Jump Mass Ransom Symlink vHost Zone-H |
| Current File : /var/www/html/tool-ob/ToolsPortal/node_modules/@tanstack/query-core/src/onlineManager.ts |
import { Subscribable } from './subscribable'
import { isServer } from './utils'
type Listener = (online: boolean) => void
type SetupFn = (setOnline: Listener) => (() => void) | undefined
export class OnlineManager extends Subscribable<Listener> {
#online = true
#cleanup?: () => void
#setup: SetupFn
constructor() {
super()
this.#setup = (onOnline) => {
// addEventListener does not exist in React Native, but window does
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (!isServer && window.addEventListener) {
const onlineListener = () => onOnline(true)
const offlineListener = () => onOnline(false)
// Listen to online
window.addEventListener('online', onlineListener, false)
window.addEventListener('offline', offlineListener, false)
return () => {
// Be sure to unsubscribe if a new handler is set
window.removeEventListener('online', onlineListener)
window.removeEventListener('offline', offlineListener)
}
}
return
}
}
protected onSubscribe(): void {
if (!this.#cleanup) {
this.setEventListener(this.#setup)
}
}
protected onUnsubscribe() {
if (!this.hasListeners()) {
this.#cleanup?.()
this.#cleanup = undefined
}
}
setEventListener(setup: SetupFn): void {
this.#setup = setup
this.#cleanup?.()
this.#cleanup = setup(this.setOnline.bind(this))
}
setOnline(online: boolean): void {
const changed = this.#online !== online
if (changed) {
this.#online = online
this.listeners.forEach((listener) => {
listener(online)
})
}
}
isOnline(): boolean {
return this.#online
}
}
export const onlineManager = new OnlineManager()