devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
47 lines (46 loc) • 1.6 kB
JavaScript
/**
* DevExtreme (esm/core/postponed_operations.js)
* Version: 21.1.4
* Build date: Mon Jun 21 2021
*
* Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import {
Deferred,
when
} from "./utils/deferred";
import {
isDefined
} from "./utils/type";
export class PostponedOperations {
constructor() {
this._postponedOperations = {}
}
add(key, fn, postponedPromise) {
if (key in this._postponedOperations) {
postponedPromise && this._postponedOperations[key].promises.push(postponedPromise)
} else {
var completePromise = new Deferred;
this._postponedOperations[key] = {
fn: fn,
completePromise: completePromise,
promises: postponedPromise ? [postponedPromise] : []
}
}
return this._postponedOperations[key].completePromise.promise()
}
callPostponedOperations() {
for (var key in this._postponedOperations) {
var operation = this._postponedOperations[key];
if (isDefined(operation)) {
if (operation.promises && operation.promises.length) {
when(...operation.promises).done(operation.fn).then(operation.completePromise.resolve)
} else {
operation.fn().done(operation.completePromise.resolve)
}
}
}
this._postponedOperations = {}
}
}