Method constructor

src/openlayers/overlay/FGB.js:74–107

(options)

export class FGB extends VectorSource {
  constructor(options) {
    const baseOptions = Object.assign({ strategy: bbox, useSpatialIndex: false }, options);
    delete baseOptions.url;
    delete baseOptions.extent;
    delete baseOptions.idField;
    super(baseOptions);
    this.options = options || {};
    this.strategy = baseOptions.strategy;
    this.url = this.options.url;
    this.extent = this.options.extent;
    this._idField = this.options.idField || 'SmID';
    this._validatedId = false;
    this._checked = false;
    this.renderInterval = this.options.renderInterval !== undefined ? this.options.renderInterval : 500;
    this.setLoader(async function (extent) {
      if (this.strategy === bbox) {
        if (!this._validatedId) {
          this.clear();
        }
        if (this.extent) {
          const intersectExtent = getIntersection(this.extent, extent);
          extent = (intersectExtent && intersectExtent.length) ? intersectExtent : this.extent;
        }
      }
      if (!this.extent && (this.strategy === all || !isFinite(extent[0]))) {
        extent = [];
      }
      let fgbStream;
      if (!Object.keys(extent).length) {
        fgbStream = await this._getStream(this.url);
      }
      this._handleFeatures((fgbStream && fgbStream.body) || this.url, extent);
    });
  }

  async _handleFeatures(url, extent) {
    let rect = {};