getInstances()

in src/components/viewer.js [186:232]

• 39 lines of code
• 2 McCabe index (conditional complexity)

  getInstances() {
    // Reset metrics
    this.newSequence = true;
    this.renderedImagesCount = 0;
    this.readyImages = [];
    this.readyImagesCount = 0;
    this.fetchStartTime = Date.now();
    this.setState({
      renderTimer: 0,
      totalTimer: 0,
      fetchTimer: 0,
      numReadyImages: 0,
      readyImagesProgress: 0,
      numRenderedImages: 0,
      renderedImagesProgress: 0,
      timeToFirstImage: 0,
      isDisplaying: true,
    });

    // Set up an interval for updating metrics (10 times per second)
    this.metricsIntervalId = setInterval(() => this.updateMetrics(), 100);

    // Create a cancelable promise to allow this request to be cancelled
    // if the component is unmounted
    this.getInstancesPromise = api.makeCancelable(
        api.fetchMetadata(
            this.props.project, this.props.location,
            this.props.dataset, this.props.dicomStore,
            this.props.study[DICOM_TAGS.STUDY_UID].Value[0],
            this.props.series[DICOM_TAGS.SERIES_UID].Value[0],
        ),
    );

    // Fetch instances and then start displaying
    this.getInstancesPromise.promise
        .then((instances) => {
          this.setState({
            instances,
          });
          this.startDisplayingInstances();
        })
        .catch((reason) => {
          if (!reason.isCanceled) {
            console.error(reason);
          }
        });
  }