-
Notifications
You must be signed in to change notification settings - Fork 0
/
state.ts
34 lines (31 loc) · 1.04 KB
/
state.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
import { Language } from './types'
export enum States {
initial = 'initial',
loading = 'loading',
ready = 'ready',
}
export type Listener = (state: States, language?: Language) => void
export const State = {
languages: [] as Language[],
loadingLanguages: [] as Language[],
listeners: [] as Listener[],
listen(handler: Listener) {
State.listeners.push(handler)
// Handler always called immediately upon registration.
handler(State.current, State.language)
},
current: States.initial,
// TODO default language, can it be changed?
language: undefined as Language | undefined,
ready(language: Language) {
State.loadingLanguages.splice(State.loadingLanguages.indexOf(language), 1)
State.languages.push(language)
State.current = States.ready
State.listeners.forEach((listener: Listener) => listener(State.current, language))
},
load(language: Language) {
State.loadingLanguages.push(language)
State.current = States.loading
State.listeners.forEach((listener) => listener(State.current, language))
},
}