public updateCriteria()

in packages/geofire/src/GeoQuery.ts [231:268]
22 lines of code
9 McCabe index (conditional complexity)

  public updateCriteria(newQueryCriteria: QueryCriteria): void {
    // Validate and save the new query criteria
    validateCriteria(newQueryCriteria);
    this._center = newQueryCriteria.center || this._center;
    this._radius = newQueryCriteria.radius || this._radius;

    // Loop through all of the locations in the query, update their distance from the center of the
    // query, and fire any appropriate events
    const keys: string[] = Object.keys(this._locationsTracked);
    for (const key of keys) {
      // If the query was cancelled while going through this loop, stop updating locations and stop
      // firing events
      if (this._cancelled === true) {
        break;
      }
      // Get the cached information for this location
      const locationDict = this._locationsTracked[key];
      // Save if the location was already in the query
      const wasAlreadyInQuery = locationDict.isInQuery;
      // Update the location's distance to the new query center
      locationDict.distanceFromCenter = distanceBetween(locationDict.location, this._center);
      // Determine if the location is now in this query
      locationDict.isInQuery = (locationDict.distanceFromCenter <= this._radius);
      // If the location just left the query, fire the 'key_exited' callbacks
      // Else if the location just entered the query, fire the 'key_entered' callbacks
      if (wasAlreadyInQuery && !locationDict.isInQuery) {
        this._fireCallbacksForKey('key_exited', key, locationDict.location, locationDict.distanceFromCenter);
      } else if (!wasAlreadyInQuery && locationDict.isInQuery) {
        this._fireCallbacksForKey('key_entered', key, locationDict.location, locationDict.distanceFromCenter);
      }
    }

    // Reset the variables which control when the 'ready' event fires
    this._valueEventFired = false;

    // Listen for new geohashes being added to GeoFire and fire the appropriate events
    this._listenForNewGeohashes();
  }