Created
November 26, 2017 01:24
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import * as React from 'react' | |
import {Observable} from 'rxjs/Observable' | |
import {Subject} from 'rxjs/Subject' | |
import {ISubscription} from 'rxjs/Subscription' | |
import {Observables} from '../rxjs/Observables' | |
import {Pipes} from '../rxjs/Pipes' | |
import {Subjects} from '../rxjs/Subjects' | |
import {EventHandlers} from '../utils/EventHandler' | |
export abstract class ReactiveReactComponent<Props, State, Events> extends React.Component<Props, State> { | |
componentWillMount() { | |
this._eventSources = Object.keys(this.eventMiddleware) | |
.map(name => ({ | |
[name]: new Subject() | |
})) | |
.reduce((prev, curr) => Object.assign(prev, curr)) as any | |
this.events = Object.keys(this._eventSources) | |
.map(name => ({ | |
[name]: (this._eventSources[name] as Subject<any>) | |
.asObservable() | |
.let(this.eventMiddleware[name]) | |
})) | |
.reduce((prev, curr) => Object.assign(prev, curr)) as any | |
this.trigger = Object.keys(this._eventSources) | |
.map(name => ({ | |
[name]: (event: any) => { | |
(this._eventSources[name] as Subject<any>).next(event) | |
} | |
})) | |
.reduce((prev, curr) => Object.assign(prev, curr)) as any | |
this.setState(this.initialState()) | |
this.subscription = this.sideEffects() | |
} | |
componentWillReceiveProps(nextProps: Props) { | |
if (nextProps != this.props) { | |
this.subscription.unsubscribe() | |
this.subscription = this.sideEffects() | |
} | |
} | |
componentWillUnmount(): void { | |
this.subscription.unsubscribe() | |
} | |
abstract render(): JSX.Element | |
private _eventSources: Subjects<Events> | |
private subscription: ISubscription | |
protected abstract sideEffects(): ISubscription | |
protected abstract initialState(): State | |
protected abstract eventMiddleware: Pipes<Events> | |
protected events: Observables<Events> | |
protected trigger: EventHandlers<Events> | |
} | |
export const Pass = <T>(observable: Observable<T>): Observable<T> => observable |
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