Method _updateDatasets

src/core/core.controller.js:648–662

* Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate` * hook, in which case, plugins will not be called on `afterDatasetsUpdate`. * @private

(mode)

	 * @private
	 */
  _updateDatasets(mode) {
    if (this.notifyPlugins(class="st">'beforeDatasetsUpdate', {mode, cancelable: true}) === false) {
      return;
    }

    for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
      this.getDatasetMeta(i).controller.configure();
    }

    for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
      this._updateDataset(i, isFunction(mode) ? mode({datasetIndex: i}) : mode);
    }

    this.notifyPlugins(class="st">'afterDatasetsUpdate', {mode});
  }

  /**
	 * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`