@angular/core
Version:
Angular - the core framework
118 lines • 7.69 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { isPromise } from '../src/util/lang';
import { Inject, Injectable, InjectionToken, Optional } from './di';
/**
* A function that will be executed when an application is initialized.
*
* \@publicApi
* @type {?}
*/
export const APP_INITIALIZER = new InjectionToken('Application Initializer');
/**
* A class that reflects the state of running {\@link APP_INITIALIZER}s.
*
* \@publicApi
*/
export class ApplicationInitStatus {
/**
* @param {?} appInits
*/
constructor(appInits) {
this.appInits = appInits;
this.initialized = false;
this.done = false;
this.donePromise = new Promise((/**
* @param {?} res
* @param {?} rej
* @return {?}
*/
(res, rej) => {
this.resolve = res;
this.reject = rej;
}));
}
/**
* \@internal
* @return {?}
*/
runInitializers() {
if (this.initialized) {
return;
}
/** @type {?} */
const asyncInitPromises = [];
/** @type {?} */
const complete = (/**
* @return {?}
*/
() => {
((/** @type {?} */ (this))).done = true;
this.resolve();
});
if (this.appInits) {
for (let i = 0; i < this.appInits.length; i++) {
/** @type {?} */
const initResult = this.appInits[i]();
if (isPromise(initResult)) {
asyncInitPromises.push(initResult);
}
}
}
Promise.all(asyncInitPromises).then((/**
* @return {?}
*/
() => { complete(); })).catch((/**
* @param {?} e
* @return {?}
*/
e => { this.reject(e); }));
if (asyncInitPromises.length === 0) {
complete();
}
this.initialized = true;
}
}
ApplicationInitStatus.decorators = [
{ type: Injectable }
];
/** @nocollapse */
ApplicationInitStatus.ctorParameters = () => [
{ type: Array, decorators: [{ type: Inject, args: [APP_INITIALIZER,] }, { type: Optional }] }
];
if (false) {
/**
* @type {?}
* @private
*/
ApplicationInitStatus.prototype.resolve;
/**
* @type {?}
* @private
*/
ApplicationInitStatus.prototype.reject;
/**
* @type {?}
* @private
*/
ApplicationInitStatus.prototype.initialized;
/** @type {?} */
ApplicationInitStatus.prototype.donePromise;
/** @type {?} */
ApplicationInitStatus.prototype.done;
/**
* @type {?}
* @private
*/
ApplicationInitStatus.prototype.appInits;
}
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