Method _createItems

src/plugins/plugin.tooltip.js:600–636

* @private

(options)

	 * @private
	 */
  _createItems(options) {
    const active = this._active;
    const data = this.chart.data;
    const labelColors = [];
    const labelPointStyles = [];
    const labelTextColors = [];
    let tooltipItems = [];
    let i, len;

    for (i = 0, len = active.length; i < len; ++i) {
      tooltipItems.push(createTooltipItem(this.chart, active[i]));
    }

    // If the user provided a filter function, use it to modify the tooltip items
    if (options.filter) {
      tooltipItems = tooltipItems.filter((element, index, array) => options.filter(element, index, array, data));
    }

    // If the user provided a sorting function, use it to modify the tooltip items
    if (options.itemSort) {
      tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data));
    }

    // Determine colors for boxes
    each(tooltipItems, (context) => {
      const scoped = overrideCallbacks(options.callbacks, context);
      labelColors.push(invokeCallbackWithFallback(scoped, 'labelColor', this, context));
      labelPointStyles.push(invokeCallbackWithFallback(scoped, 'labelPointStyle', this, context));
      labelTextColors.push(invokeCallbackWithFallback(scoped, 'labelTextColor', this, context));
    });

    this.labelColors = labelColors;
    this.labelPointStyles = labelPointStyles;
    this.labelTextColors = labelTextColors;
    this.dataPoints = tooltipItems;
    return tooltipItems;
  }

  update(changed, replay) {
    const options = this.options.setContext(this.getContext());