json-joy/lib/util/events/sync-store.js

Collection of libraries for building collaborative editing apps.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ValueSyncStore = exports.FanoutSyncStore = void 0;
const fanout_1 = require("thingies/lib/fanout");
class FanoutSyncStore {
    constructor(getSnapshot) {
        this.getSnapshot = getSnapshot;
        this.fanout = new fanout_1.FanOut();
        this.subscribe = (cb) => this.fanout.listen(cb);
    }
}
exports.FanoutSyncStore = FanoutSyncStore;
class ValueSyncStore {
    constructor(value) {
        this.value = value;
        this.fanout = new fanout_1.FanOut();
        this.subscribe = (cb) => this.fanout.listen(cb);
        this.getSnapshot = () => this.value;
    }
    next(value, force = false) {
        if (!force && this.value === value)
            return;
        this.value = value;
        this.fanout.emit();
    }
}
exports.ValueSyncStore = ValueSyncStore;