web-atoms-core/dist/core/Defer.js

Web Atoms Core

(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    /**
     * Defers execution for given milliseconds. And previous pending
     * execution is cancelled, so only the last execution will be executed.
     *
     * This is important when you want to watch multiple events and avoid multiple refresh
     * @param n number of milliseconds to defer
     */
    function Defer(n) {
        if (n === void 0) { n = 100; }
        return function (target, key, descriptor) {
            // tslint:disable-next-line: ban-types
            var old = descriptor.value;
            descriptor.value = function () {
                var _this = this;
                var a = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    a[_i] = arguments[_i];
                }
                var k = "_$_timeout_" + key;
                var id = this[k];
                if (id) {
                    clearTimeout(id);
                }
                this[k] = setTimeout(function () {
                    _this[k] = 0;
                    old.apply(_this, a);
                }, n);
            };
        };
    }
    exports.default = Defer;
});
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