chrt-object/src/charts/util/data.js

Universal Object components of Chrt

import {hasData} from '../../helpers';

export default function (data, accessor) {
  // console.log('---------------> data', data, accessor, this);
  if (!data) {
    // console.log('NO DATA return', hasData(this), this._data, hasData(this) ? this._data : this)
    return hasData(this) ? (this._data || null) : this;
  }
  // TODO: not sure what this is doing...
  if(!hasData(this)) {
    // console.log('NO HAS DATA')
    return this;
  }
  // console.log('HAS DATA')
  // // console.log('chrt or series', this.type)
  // passing only accessor to inherit/reuse data
  if(typeof arguments[0] === 'function') {
    this._accessor = arguments[0];
    return this;
  }

  // data is passed
  this._orginalData = this._orginalData || data;

  // define accessor function to map values
  const accessorFunction = accessor || this._accessor;
  this._accessor = accessorFunction;
  this._data = (accessorFunction && !this._accessorApplied) ? data.map((d, i, arr) => {
    if(d instanceof Object) {
      return Object.assign({}, d, accessorFunction(d, i, arr));
    }
    return accessorFunction(d, i, arr);
  }) : data;

  // console.log('DATA', data)

  this._accessorApplied = true; // do not apply the accessor multiple times

  return this;
}