48 lines
958 B
TypeScript
48 lines
958 B
TypeScript
import { EventDispatcher } from '../../../events'
|
|
|
|
export interface DataSourceState {
|
|
connecting: boolean
|
|
connected: boolean
|
|
error?: string
|
|
}
|
|
|
|
export class DataSourceStateMachine {
|
|
public onUpdate = new EventDispatcher<DataSourceState, DataSourceStateMachine>(this)
|
|
private state: DataSourceState = {
|
|
error: undefined,
|
|
connected: false,
|
|
connecting: false,
|
|
}
|
|
|
|
public setConnected(connected: boolean) {
|
|
this.state = {
|
|
connected,
|
|
error: undefined,
|
|
connecting: false,
|
|
}
|
|
this.onUpdate.dispatch(this.state)
|
|
}
|
|
|
|
public setError(error: Error) {
|
|
this.state = {
|
|
error: error.message,
|
|
connected: false,
|
|
connecting: false,
|
|
}
|
|
this.onUpdate.dispatch(this.state)
|
|
}
|
|
|
|
public setConnecting() {
|
|
this.state = {
|
|
error: undefined,
|
|
connected: false,
|
|
connecting: true,
|
|
}
|
|
this.onUpdate.dispatch(this.state)
|
|
}
|
|
|
|
public toJSON() {
|
|
return this.state
|
|
}
|
|
}
|