Method initAsync

modules/core/ImagerySystem.js:60–96

* initAsync * Called after all core objects have been constructed. * @return {Promise} Promise resolved when this component has completed initialization

()

   * @return {Promise} Promise resolved when this component has completed initialization
   */
  initAsync() {
    if (this._initPromise) return this._initPromise;

    for (const id of this.dependencies) {
      if (!this.context.systems[id]) {
        return Promise.reject(`Cannot init:  ${this.id} requires ${id}`);
      }
    }

    const context = this.context;
    const assets = context.systems.assets;
    const gfx = context.systems.gfx;
    const map = context.systems.map;
    const storage = context.systems.storage;
    const urlhash = context.systems.urlhash;

    const prerequisites = Promise.all([
      assets.initAsync(),
      gfx.initAsync(),   // `gfx.scene` will exist after `initAsync`
      map.initAsync(),   // `ImagerySystem` should listen for 'hashchange' after `MapSystem`
      storage.initAsync(),
      urlhash.initAsync()
    ]);

    return this._initPromise = prerequisites
      .then(() => {
        // Setup event handlers..
        urlhash.on('hashchange', this._hashchange);
        gfx.scene.on('layerchange', this._imageryChanged);
      })
      .then(() => assets.loadAssetAsync('imagery'))
      .then(data => this._initImageryIndex(data))
      .then(() => this._initWaybackAsync());
      // .catch(e => {
        // if (e instanceof Error) console.error(e);  // eslint-disable-line no-console
      // });
  }


  /**