sobs/lib/decorators/ObservableObject.js

React observables

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
exports.default = (constructor) => class extends constructor {
    constructor(...args) {
        super(...args);
        this.__sobs_listeners = {};
        this.__sobs_addListener = (callback) => {
            const id = utils_1.newId();
            this.__sobs_listeners[id] = callback;
            return id;
        };
        this.__sobs_removeListener = (id) => {
            delete this.__sobs_listeners[id];
        };
        this.didChange = () => {
            const listeners = Object.values(this.__sobs_listeners);
            for (const listener of listeners)
                listener();
        };
        return new Proxy(this, {
            set: (target, key, value) => {
                target[key] = value;
                if (target[`__sobs_isPublished_${key}`])
                    target.didChange();
                return true;
            }
        });
    }
};
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