src initStudyPrefetcherService.ts

91.66% Statements 11/12

100% Branches 0/0

80% Functions 4/5

91.66% Lines 11/12

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  import { cache, imageLoadPoolManager, imageLoader, Enums, eventTarget, EVENTS as csEvents } from '@cornerstonejs/core';
 
function initStudyPrefetcherService(servicesManager: AppTypes.ServicesManager) {
  const { studyPrefetcherService } = servicesManager.services;
 
  studyPrefetcherService.requestType = Enums.RequestType.Prefetch;
  studyPrefetcherService.imageLoadPoolManager = imageLoadPoolManager;
  studyPrefetcherService.imageLoader = imageLoader;
 
  studyPrefetcherService.cache = {
    isImageCached(imageId: string): boolean {
      return !!cache.getImageLoadObject(imageId);
    }
  }
 
  studyPrefetcherService.imageLoadEventsManager = {
    addEventListeners(onImageLoaded, onImageLoadFailed) {
      eventTarget.addEventListener(csEvents.IMAGE_LOADED, onImageLoaded);
      eventTarget.addEventListener(csEvents.IMAGE_LOAD_FAILED, onImageLoadFailed);
 
      return [
        {
          unsubscribe: () => eventTarget.removeEventListener(csEvents.IMAGE_LOADED, onImageLoaded)
        },
        {
          unsubscribe: () => eventTarget.removeEventListener(csEvents.IMAGE_LOAD_FAILED, onImageLoadFailed)
        },
      ]
    }
  }
}
 
export default initStudyPrefetcherService;