react-dynamic-virtual-tree/dist/virtualTree/listener.js

Library for visualizing nested lists with dynamically changing sizes.

var Listener = /** @class */ (function () {
    function Listener() {
        this.listeners = {};
    }
    Listener.prototype.onListen = function (key, callback) {
        var _this = this;
        if (!this.listeners[key]) {
            this.listeners[key] = [];
        }
        this.listeners[key].push(callback);
        return function () {
            var index = _this.listeners[key].findIndex(function (item) { return item === callback; });
            if (index !== -1) {
                _this.listeners[key].splice(index, 1);
            }
        };
    };
    Listener.prototype.dispatch = function (key, value) {
        var listeners = this.listeners[key] || [];
        listeners.forEach(function (listener) {
            listener(value);
        });
    };
    Listener.prototype.removeAllListeners = function () {
        this.listeners = {};
    };
    return Listener;
}());
export { Listener };