@design.estate/dees-element/dist_ts/dees-element.classes.subscribedirective.js

A library for creating custom elements extending the lit element class with additional functionalities.

import { noChange } from 'lit';
import { AsyncDirective, directive } from 'lit/async-directive.js';
import { rxjs } from '@push.rocks/smartrx';
class SubscribeDirective extends AsyncDirective {
    constructor() {
        super(...arguments);
        this.sub = null;
    }
    render(observable) {
        if (this.observable !== observable) {
            this.sub?.unsubscribe();
            this.observable = observable;
            if (this.isConnected) {
                this.subscribe(observable);
            }
        }
        return noChange;
    }
    subscribe(observable) {
        this.sub = observable.subscribe((v) => {
            this.setValue(v);
        });
    }
    disconnected() {
        this.sub?.unsubscribe();
    }
    reconnected() {
        this.subscribe(this.observable);
    }
}
export const subscribe = directive(SubscribeDirective);
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