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@angular/core

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Angular - the core framework

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/** * @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 { __extends } from "tslib"; /// <reference types="rxjs" /> import { Subject, Subscription } from 'rxjs'; /** * Use in components with the `@Output` directive to emit custom events * synchronously or asynchronously, and register handlers for those events * by subscribing to an instance. * * @usageNotes * * Extends * [RxJS `Subject`](https://rxjs.dev/api/index/class/Subject) * for Angular by adding the `emit()` method. * * 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> * ``` * * @see [Observables in Angular](guide/observables-in-angular) * @publicApi */ var EventEmitter = /** @class */ (function (_super) { __extends(EventEmitter, _super); /** * Creates an instance of this class that can * deliver events synchronously or asynchronously. * * @param isAsync When true, deliver events asynchronously. * */ function EventEmitter(isAsync) { if (isAsync === void 0) { isAsync = false; } var _this = _super.call(this) || this; _this.__isAsync = isAsync; return _this; } /** * Emits an event containing a given value. * @param value The value to emit. */ EventEmitter.prototype.emit = function (value) { _super.prototype.next.call(this, 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. */ EventEmitter.prototype.subscribe = function (generatorOrNext, error, complete) { var schedulerFn; var errorFn = function (err) { return null; }; var completeFn = function () { return null; }; if (generatorOrNext && typeof generatorOrNext === 'object') { schedulerFn = this.__isAsync ? function (value) { setTimeout(function () { return generatorOrNext.next(value); }); } : function (value) { generatorOrNext.next(value); }; if (generatorOrNext.error) { errorFn = this.__isAsync ? function (err) { setTimeout(function () { return generatorOrNext.error(err); }); } : function (err) { generatorOrNext.error(err); }; } if (generatorOrNext.complete) { completeFn = this.__isAsync ? function () { setTimeout(function () { return generatorOrNext.complete(); }); } : function () { generatorOrNext.complete(); }; } } else { schedulerFn = this.__isAsync ? function (value) { setTimeout(function () { return generatorOrNext(value); }); } : function (value) { generatorOrNext(value); }; if (error) { errorFn = this.__isAsync ? function (err) { setTimeout(function () { return error(err); }); } : function (err) { error(err); }; } if (complete) { completeFn = this.__isAsync ? function () { setTimeout(function () { return complete(); }); } : function () { complete(); }; } } var sink = _super.prototype.subscribe.call(this, schedulerFn, errorFn, completeFn); if (generatorOrNext instanceof Subscription) { generatorOrNext.add(sink); } return sink; }; return EventEmitter; }(Subject)); export { EventEmitter }; //# sourceMappingURL=data:application/json;base64,{"version":3,"file":"event_emitter.js","sourceRoot":"","sources":["../../../../../../../../../packages/core/src/event_emitter.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;;AAEH,8BAA8B;AAE9B,OAAO,EAAC,OAAO,EAAE,YAAY,EAAC,MAAM,MAAM,CAAC;AAE3C;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAkDG;AACH;IAAiD,gCAAU;IAMzD;;;;;;OAMG;IACH,sBAAY,OAAwB;QAAxB,wBAAA,EAAA,eAAwB;QAApC,YACE,iBAAO,SAER;QADC,KAAI,CAAC,SAAS,GAAG,OAAO,CAAC;;IAC3B,CAAC;IAED;;;OAGG;IACH,2BAAI,GAAJ,UAAK,KAAS;QACZ,iBAAM,IAAI,YAAC,KAAK,CAAC,CAAC;IACpB,CAAC;IAED;;;;;;;OAOG;IACH,gCAAS,GAAT,UAAU,eAAqB,EAAE,KAAW,EAAE,QAAc;QAC1D,IAAI,WAA4B,CAAC;QACjC,IAAI,OAAO,GAAG,UAAC,GAAQ,IAAU,OAAA,IAAI,EAAJ,CAAI,CAAC;QACtC,IAAI,UAAU,GAAG,cAAW,OAAA,IAAI,EAAJ,CAAI,CAAC;QAEjC,IAAI,eAAe,IAAI,OAAO,eAAe,KAAK,QAAQ,EAAE;YAC1D,WAAW,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,UAAC,KAAU;gBACxC,UAAU,CAAC,cAAM,OAAA,eAAe,CAAC,IAAI,CAAC,KAAK,CAAC,EAA3B,CAA2B,CAAC,CAAC;YAChD,CAAC,CAAC,CAAC,CAAC,UAAC,KAAU;gBACb,eAAe,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;YAC9B,CAAC,CAAC;YAEF,IAAI,eAAe,CAAC,KAAK,EAAE;gBACzB,OAAO,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,UAAC,GAAG;oBAC7B,UAAU,CAAC,cAAM,OAAA,eAAe,CAAC,KAAK,CAAC,GAAG,CAAC,EAA1B,CAA0B,CAAC,CAAC;gBAC/C,CAAC,CAAC,CAAC,CAAC,UAAC,GAAG;oBACN,eAAe,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;gBAC7B,CAAC,CAAC;aACH;YAED,IAAI,eAAe,CAAC,QAAQ,EAAE;gBAC5B,UAAU,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;oBAC5B,UAAU,CAAC,cAAM,OAAA,eAAe,CAAC,QAAQ,EAAE,EAA1B,CAA0B,CAAC,CAAC;gBAC/C,CAAC,CAAC,CAAC,CAAC;oBACF,eAAe,CAAC,QAAQ,EAAE,CAAC;gBAC7B,CAAC,CAAC;aACH;SACF;aAAM;YACL,WAAW,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,UAAC,KAAU;gBACxC,UAAU,CAAC,cAAM,OAAA,eAAe,CAAC,KAAK,CAAC,EAAtB,CAAsB,CAAC,CAAC;YAC3C,CAAC,CAAC,CAAC,CAAC,UAAC,KAAU;gBACb,eAAe,CAAC,KAAK,CAAC,CAAC;YACzB,CAAC,CAAC;YAEF,IAAI,KAAK,EAAE;gBACT,OAAO,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,UAAC,GAAG;oBAC7B,UAAU,CAAC,cAAM,OAAA,KAAK,CAAC,GAAG,CAAC,EAAV,CAAU,CAAC,CAAC;gBAC/B,CAAC,CAAC,CAAC,CAAC,UAAC,GAAG;oBACN,KAAK,CAAC,GAAG,CAAC,CAAC;gBACb,CAAC,CAAC;aACH;YAED,IAAI,QAAQ,EAAE;gBACZ,UAAU,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;oBAC5B,UAAU,CAAC,cAAM,OAAA,QAAQ,EAAE,EAAV,CAAU,CAAC,CAAC;gBAC/B,CAAC,CAAC,CAAC,CAAC;oBACF,QAAQ,EAAE,CAAC;gBACb,CAAC,CAAC;aACH;SACF;QAED,IAAM,IAAI,GAAG,iBAAM,SAAS,YAAC,WAAW,EAAE,OAAO,EAAE,UAAU,CAAC,CAAC;QAE/D,IAAI,eAAe,YAAY,YAAY,EAAE;YAC3C,eAAe,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;SAC3B;QAED,OAAO,IAAI,CAAC;IACd,CAAC;IACH,mBAAC;AAAD,CAAC,AA7FD,CAAiD,OAAO,GA6FvD","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 components with the `@Output` directive to emit custom events\n * synchronously or asynchronously, and register handlers for those events\n * by subscribing to an instance.\n *\n * @usageNotes\n *\n * Extends\n * [RxJS `Subject`](https://rxjs.dev/api/index/class/Subject)\n * for Angular by adding the `emit()` method.\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 * @see [Observables in Angular](guide/observables-in-angular)\n * @publicApi\n */\nexport class EventEmitter<T extends any> extends Subject<T> {\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) {\n    super.next(value);\n  }\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 ? 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