react-obsidian/dist/src/observable/mediator/MediatorObservable.js

Dependency injection framework for React and React Native applications

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MediatorObservable = void 0;
const notNull_1 = require("../../utils/notNull");
const Observable_1 = require("../Observable");
class MediatorObservable extends Observable_1.Observable {
    mapSource(source, mapNext) {
        this.addSource(source, (next) => {
            this.value = mapNext(next, this.value);
        });
        return this;
    }
    addSource(source, onNext) {
        source.subscribe(onNext);
        if (source.value !== undefined) {
            onNext(source.value);
        }
        return this;
    }
    addSources(sources, onNext) {
        const values = new Array(sources.length);
        sources
            .filter(notNull_1.notNull)
            .forEach((source, index) => {
            this.addSource(source, (next) => {
                if (values[index] === next)
                    return;
                if (values[index] === undefined) {
                    values[index] = next;
                }
                else {
                    values[index] = next;
                    onNext(values);
                }
            });
        });
        onNext(values);
        return this;
    }
    mapSources(sources, mapNext) {
        const values = new Array(sources.length);
        sources
            .filter(notNull_1.notNull)
            .forEach((source, index) => {
            this.addSource(source, (next) => {
                if (values[index] === next)
                    return;
                if (values[index] === undefined) {
                    values[index] = next;
                }
                else {
                    values[index] = next;
                    this.value = mapNext(values, this.value);
                }
            });
        });
        this.value = mapNext(values, this.value);
        return this;
    }
}
exports.MediatorObservable = MediatorObservable;
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