@yelon/abc/fesm2022/chart-observer-size.mjs.map

Common business components of ng-yunzai.

{"version":3,"file":"chart-observer-size.mjs","sources":["../../../../packages/abc/observers/observer-size.ts","../../../../packages/abc/observers/chart-observer-size.ts"],"sourcesContent":["import {\n  AfterViewInit,\n  Directive,\n  ElementRef,\n  EventEmitter,\n  Injectable,\n  NgModule,\n  NgZone,\n  OnDestroy,\n  Output,\n  inject\n} from '@angular/core';\nimport { Observable, Observer, Subject, Subscription } from 'rxjs';\n\n@Injectable({ providedIn: 'root' })\nexport class SizeObserver implements OnDestroy {\n  private _observedElements = new Map<\n    Element,\n    {\n      observer: MutationObserver | null;\n      readonly stream: Subject<MutationRecord[]>;\n      count: number;\n    }\n  >();\n\n  ngOnDestroy(): void {\n    this._observedElements.forEach((_, element) => this._cleanupObserver(element));\n  }\n\n  observe(element: Element): Observable<MutationRecord[]> {\n    return new Observable((observer: Observer<MutationRecord[]>) => {\n      const stream = this._observeElement(element);\n      const subscription = stream.subscribe(observer);\n\n      return () => {\n        subscription.unsubscribe();\n        this._unobserveElement(element);\n      };\n    });\n  }\n\n  private _observeElement(element: Element): Subject<MutationRecord[]> {\n    if (!this._observedElements.has(element)) {\n      const stream = new Subject<MutationRecord[]>();\n      let observer: MutationObserver | null = null;\n      if (typeof MutationObserver !== 'undefined') {\n        observer = new MutationObserver(mutations => stream.next(mutations));\n        observer.observe(element, {\n          attributes: true,\n          attributeOldValue: true,\n          attributeFilter: ['width', 'height', 'style']\n        });\n      }\n      this._observedElements.set(element, { observer, stream, count: 1 });\n    } else {\n      this._observedElements.get(element)!.count++;\n    }\n    return this._observedElements.get(element)!.stream;\n  }\n\n  private _unobserveElement(element: Element): void {\n    if (this._observedElements.has(element)) {\n      this._observedElements.get(element)!.count--;\n      if (!this._observedElements.get(element)!.count) {\n        this._cleanupObserver(element);\n      }\n    }\n  }\n\n  private _cleanupObserver(element: Element): void {\n    if (this._observedElements.has(element)) {\n      const { observer, stream } = this._observedElements.get(element)!;\n      if (observer) {\n        observer.disconnect();\n      }\n      stream.complete();\n      this._observedElements.delete(element);\n    }\n  }\n}\n\n@Directive({\n  selector: '[observeSize]',\n  exportAs: 'observeSize'\n})\nexport class ObserverSize implements AfterViewInit, OnDestroy {\n  private readonly _obs = inject(SizeObserver);\n  private readonly el: HTMLElement = inject(ElementRef).nativeElement;\n  private readonly ngZone = inject(NgZone);\n\n  private _sub$: Subscription | null = null;\n  @Output('observeSize') readonly event = new EventEmitter<MutationRecord[]>();\n\n  ngAfterViewInit(): void {\n    if (!this._sub$) {\n      this._sub();\n    }\n  }\n\n  private _sub(): void {\n    this._unsub();\n    const stream = this._obs.observe(this.el);\n    this.ngZone.runOutsideAngular(() => {\n      this._sub$ = stream.subscribe(this.event);\n    });\n  }\n\n  private _unsub(): void {\n    this._sub$?.unsubscribe();\n  }\n\n  ngOnDestroy(): void {\n    this._unsub();\n  }\n}\n\n@NgModule({\n  exports: [ObserverSize],\n  imports: [ObserverSize]\n})\nexport class ObserversModule {}\n","/**\n * Generated bundle index. 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