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@angular/core

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Angular - the core framework

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/** * @fileoverview added by tsickle * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ /// <reference types="rxjs" /> /** * @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 */ /// <reference types="rxjs" /> import { Subject, Subscription } from 'rxjs'; /** * Use in directives and components to emit custom events synchronously * or asynchronously, and register handlers for those events by subscribing * to an instance. * * \@usageNotes * * In the following example, a component defines two output properties * that create event emitters. When the title is clicked, the emitter * emits an open or close event to toggle the current visibility state. * * ```html * \@Component({ * selector: 'zippy', * template: ` * <div class="zippy"> * <div (click)="toggle()">Toggle</div> * <div [hidden]="!visible"> * <ng-content></ng-content> * </div> * </div>`}) * export class Zippy { * visible: boolean = true; * \@Output() open: EventEmitter<any> = new EventEmitter(); * \@Output() close: EventEmitter<any> = new EventEmitter(); * * toggle() { * this.visible = !this.visible; * if (this.visible) { * this.open.emit(null); * } else { * this.close.emit(null); * } * } * } * ``` * * Access the event object with the `$event` argument passed to the output event * handler: * * ```html * <zippy (open)="onOpen($event)" (close)="onClose($event)"></zippy> * ``` * * \@publicApi * @template T */ export class EventEmitter extends Subject { // tslint:disable-line /** * Creates an instance of this class that can * deliver events synchronously or asynchronously. * * @param {?=} isAsync When true, deliver events asynchronously. * */ constructor(isAsync = false) { super(); this.__isAsync = isAsync; } /** * Emits an event containing a given value. * @param {?=} value The value to emit. * @return {?} */ emit(value) { super.next(value); } /** * Registers handlers for events emitted by this instance. * @param {?=} generatorOrNext When supplied, a custom handler for emitted events. * @param {?=} error When supplied, a custom handler for an error notification * from this emitter. * @param {?=} complete When supplied, a custom handler for a completion * notification from this emitter. * @return {?} */ subscribe(generatorOrNext, error, complete) { /** @type {?} */ let schedulerFn; /** @type {?} */ let errorFn = (/** * @param {?} err * @return {?} */ (err) => null); /** @type {?} */ let completeFn = (/** * @return {?} */ () => null); if (generatorOrNext && typeof generatorOrNext === 'object') { schedulerFn = this.__isAsync ? (/** * @param {?} value * @return {?} */ (value) => { setTimeout((/** * @return {?} */ () => generatorOrNext.next(value))); }) : (/** * @param {?} value * @return {?} */ (value) => { generatorOrNext.next(value); }); if (generatorOrNext.error) { errorFn = this.__isAsync ? (/** * @param {?} err * @return {?} */ (err) => { setTimeout((/** * @return {?} */ () => generatorOrNext.error(err))); }) : (/** * @param {?} err * @return {?} */ (err) => { generatorOrNext.error(err); }); } if (generatorOrNext.complete) { completeFn = this.__isAsync ? (/** * @return {?} */ () => { setTimeout((/** * @return {?} */ () => generatorOrNext.complete())); }) : (/** * @return {?} */ () => { generatorOrNext.complete(); }); } } else { schedulerFn = this.__isAsync ? (/** * @param {?} value * @return {?} */ (value) => { setTimeout((/** * @return {?} */ () => generatorOrNext(value))); }) : (/** * @param {?} value * @return {?} */ (value) => { generatorOrNext(value); }); if (error) { errorFn = this.__isAsync ? (/** * @param {?} err * @return {?} */ (err) => { setTimeout((/** * @return {?} */ () => error(err))); }) : (/** * @param {?} err * @return {?} */ (err) => { error(err); }); } if (complete) { completeFn = this.__isAsync ? (/** * @return {?} */ () => { setTimeout((/** * @return {?} */ () => complete())); }) : (/** * @return {?} */ () => { complete(); }); } } /** @type {?} */ const sink = super.subscribe(schedulerFn, errorFn, completeFn); if (generatorOrNext instanceof Subscription) { generatorOrNext.add(sink); } return sink; } } if (false) { /** * Internal * @type {?} */ EventEmitter.prototype.__isAsync; } //# sourceMappingURL=data:application/json;base64,{"version":3,"file":"event_emitter.js","sourceRoot":"","sources":["../../../../../../packages/core/src/event_emitter.ts"],"names":[],"mappings":";;;;AAQA,8BAA8B;;;;;;;;;AAE9B,OAAO,EAAC,OAAO,EAAE,YAAY,EAAC,MAAM,MAAM,CAAC;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgD3C,MAAM,OAAO,YAAgB,SAAQ,OAAU;;;;;;;;;IAiB7C,YAAY,UAAmB,KAAK;QAClC,KAAK,EAAE,CAAC;QACR,IAAI,CAAC,SAAS,GAAG,OAAO,CAAC;IAC3B,CAAC;;;;;;IAMD,IAAI,CAAC,KAAS,IAAI,KAAK,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;;;;;;;;;;IAUtC,SAAS,CAAC,eAAqB,EAAE,KAAW,EAAE,QAAc;;YACtD,WAA4B;;YAC5B,OAAO;;;;QAAG,CAAC,GAAQ,EAAO,EAAE,CAAC,IAAI,CAAA;;YACjC,UAAU;;;QAAG,GAAQ,EAAE,CAAC,IAAI,CAAA;QAEhC,IAAI,eAAe,IAAI,OAAO,eAAe,KAAK,QAAQ,EAAE;YAC1D,WAAW,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;;;;YAAC,CAAC,KAAU,EAAE,EAAE;gBAC5C,UAAU;;;gBAAC,GAAG,EAAE,CAAC,eAAe,CAAC,IAAI,CAAC,KAAK,CAAC,EAAC,CAAC;YAChD,CAAC,EAAC,CAAC;;;;YAAC,CAAC,KAAU,EAAE,EAAE,GAAG,eAAe,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAA,CAAC;YAErD,IAAI,eAAe,CAAC,KAAK,EAAE;gBACzB,OAAO,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;;;;gBAAC,CAAC,GAAG,EAAE,EAAE,GAAG,UAAU;;;gBAAC,GAAG,EAAE,CAAC,eAAe,CAAC,KAAK,CAAC,GAAG,CAAC,EAAC,CAAC,CAAC,CAAC,EAAC,CAAC;;;;;oBAC5D,CAAC,GAAG,EAAE,EAAE,GAAG,eAAe,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAA,CAAC;aACrE;YAED,IAAI,eAAe,CAAC,QAAQ,EAAE;gBAC5B,UAAU,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;;;gBAAC,GAAG,EAAE,GAAG,UAAU;;;gBAAC,GAAG,EAAE,CAAC,eAAe,CAAC,QAAQ,EAAE,EAAC,CAAC,CAAC,CAAC,EAAC,CAAC;;;;oBACzD,GAAG,EAAE,GAAG,eAAe,CAAC,QAAQ,EAAE,CAAC,CAAC,CAAC,CAAA,CAAC;aACrE;SACF;aAAM;YACL,WAAW,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;;;;YAAC,CAAC,KAAU,EAAE,EAAE,GAAG,UAAU;;;YAAC,GAAG,EAAE,CAAC,eAAe,CAAC,KAAK,CAAC,EAAC,CAAC,CAAC,CAAC,EAAC,CAAC;;;;;gBAC/D,CAAC,KAAU,EAAE,EAAE,GAAG,eAAe,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAA,CAAC;YAE3E,IAAI,KAAK,EAAE;gBACT,OAAO;oBACH,IAAI,CAAC,SAAS,CAAC,CAAC;;;;oBAAC,CAAC,GAAG,EAAE,EAAE,GAAG,UAAU;;;oBAAC,GAAG,EAAE,CAAC,KAAK,CAAC,GAAG,CAAC,EAAC,CAAC,CAAC,CAAC,EAAC,CAAC;;;;oBAAC,CAAC,GAAG,EAAE,EAAE,GAAG,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAA,CAAC;aAC5F;YAED,IAAI,QAAQ,EAAE;gBACZ,UAAU;oBACN,IAAI,CAAC,SAAS,CAAC,CAAC;;;oBAAC,GAAG,EAAE,GAAG,UAAU;;;oBAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAC,CAAC,CAAC,CAAC,EAAC,CAAC;;;oBAAC,GAAG,EAAE,GAAG,QAAQ,EAAE,CAAC,CAAC,CAAC,CAAA,CAAC;aACtF;SACF;;cAEK,IAAI,GAAG,KAAK,CAAC,SAAS,CAAC,WAAW,EAAE,OAAO,EAAE,UAAU,CAAC;QAE9D,IAAI,eAAe,YAAY,YAAY,EAAE;YAC3C,eAAe,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;SAC3B;QAED,OAAO,IAAI,CAAC;IACd,CAAC;CACF;;;;;;IAtEC,iCAAmB","sourcesContent":["/**\n * @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/// <reference types=\"rxjs\" />\n\nimport {Subject, Subscription} from 'rxjs';\n\n/**\n * Use in directives and components to emit custom events synchronously\n * or asynchronously, and register handlers for those events by subscribing\n * to an instance.\n *\n * @usageNotes\n *\n * In the following example, a component defines two output properties\n * that create event emitters. When the title is clicked, the emitter\n * emits an open or close event to toggle the current visibility state.\n *\n * ```html\n * @Component({\n *   selector: 'zippy',\n *   template: `\n *   <div class=\"zippy\">\n *     <div (click)=\"toggle()\">Toggle</div>\n *     <div [hidden]=\"!visible\">\n *       <ng-content></ng-content>\n *     </div>\n *  </div>`})\n * export class Zippy {\n *   visible: boolean = true;\n *   @Output() open: EventEmitter<any> = new EventEmitter();\n *   @Output() close: EventEmitter<any> = new EventEmitter();\n *\n *   toggle() {\n *     this.visible = !this.visible;\n *     if (this.visible) {\n *       this.open.emit(null);\n *     } else {\n *       this.close.emit(null);\n *     }\n *   }\n * }\n * ```\n *\n * Access the event object with the `$event` argument passed to the output event\n * handler:\n *\n * ```html\n * <zippy (open)=\"onOpen($event)\" (close)=\"onClose($event)\"></zippy>\n * ```\n *\n * @publicApi\n */\nexport class EventEmitter<T> extends Subject<T> {\n  // TODO: mark this as internal once all the facades are gone\n  // we can't mark it as internal now because EventEmitter exported via @angular/core would not\n  // contain this property making it incompatible with all the code that uses EventEmitter via\n  // facades, which are local to the code and do not have this property stripped.\n  /**\n   * Internal\n   */\n  __isAsync: boolean;  // tslint:disable-line\n\n  /**\n   * Creates an instance of this class that can\n   * deliver events synchronously or asynchronously.\n   *\n   * @param isAsync When true, deliver events asynchronously.\n   *\n   */\n  constructor(isAsync: boolean = false) {\n    super();\n    this.__isAsync = isAsync;\n  }\n\n  /**\n   * Emits an event containing a given value.\n   * @param value The value to emit.\n   */\n  emit(value?: T) { super.next(value); }\n\n  /**\n   * Registers handlers for events emitted by this instance.\n   * @param generatorOrNext When supplied, a custom handler for emitted events.\n   * @param error When supplied, a custom handler for an error notification\n   * from this emitter.\n   * @param complete When supplied, a custom handler for a completion\n   * notification from this emitter.\n   */\n  subscribe(generatorOrNext?: any, error?: any, complete?: any): Subscription {\n    let schedulerFn: (t: any) => any;\n    let errorFn = (err: any): any => null;\n    let completeFn = (): any => null;\n\n    if (generatorOrNext && typeof generatorOrNext === 'object') {\n      schedulerFn = this.__isAsync ? (value: any) => {\n        setTimeout(() => generatorOrNext.next(value));\n      } : (value: any) => { generatorOrNext.next(value); };\n\n      if (generatorOrNext.error) {\n        errorFn = this.__isAsync ? (err) => { setTimeout(() => generatorOrNext.error(err)); } :\n                                   (err) => { generatorOrNext.error(err); };\n      }\n\n      if (generatorOrNext.complete) {\n        completeFn = this.__isAsync ? () => { setTimeout(() => generatorOrNext.complete()); } :\n                                      () => { generatorOrNext.complete(); };\n      }\n    } else {\n      schedulerFn = this.__isAsync ? (value: any) => { setTimeout(() => generatorOrNext(value)); } :\n                                     (value: any) => { generatorOrNext(value); };\n\n      if (error) {\n        errorFn =\n            this.__isAsync ? (err) => { setTimeout(() => error(err)); } : (err) => { error(err); };\n      }\n\n      if (complete) {\n        completeFn =\n            this.__isAsync ? () => { setTimeout(() => complete()); } : () => { complete(); };\n      }\n    }\n\n    const sink = super.subscribe(schedulerFn, errorFn, completeFn);\n\n    if (generatorOrNext instanceof Subscription) {\n      generatorOrNext.add(sink);\n    }\n\n    return sink;\n  }\n}\n"]}