zh/builder/src/echarts3/preprocessor/backwardCompat.js

// Compatitable with 2.0
import { each, isArray, isObject } from 'zrender/src/core/util';
import compatStyle from './helper/compatStyle';
import { normalizeToArray } from '../util/model';

function get(opt, path) {
  path = path.split(',');
  var obj = opt;

  for (var i = 0; i < path.length; i++) {
    obj = obj && obj[path[i]];

    if (obj == null) {
      break;
    }
  }

  return obj;
}

function set(opt, path, val, overwrite) {
  path = path.split(',');
  var obj = opt;
  var key;

  for (var i = 0; i < path.length - 1; i++) {
    key = path[i];

    if (obj[key] == null) {
      obj[key] = {};
    }

    obj = obj[key];
  }

  if (overwrite || obj[path[i]] == null) {
    obj[path[i]] = val;
  }
}

function compatLayoutProperties(option) {
  each(LAYOUT_PROPERTIES, function (prop) {
    if (prop[0] in option && !(prop[1] in option)) {
      option[prop[1]] = option[prop[0]];
    }
  });
}

var LAYOUT_PROPERTIES = [['x', 'left'], ['y', 'top'], ['x2', 'right'], ['y2', 'bottom']];
var COMPATITABLE_COMPONENTS = ['grid', 'geo', 'parallel', 'legend', 'toolbox', 'title', 'visualMap', 'dataZoom', 'timeline'];
var COMPATITABLE_SERIES = ['bar', 'boxplot', 'candlestick', 'chord', 'effectScatter', 'funnel', 'gauge', 'lines', 'graph', 'heatmap', 'line', 'map', 'parallel', 'pie', 'radar', 'sankey', 'scatter', 'treemap'];
export default function (option, isTheme) {
  compatStyle(option, isTheme); // Make sure series array for model initialization.

  option.series = normalizeToArray(option.series);
  each(option.series, function (seriesOpt) {
    if (!isObject(seriesOpt)) {
      return;
    }

    var seriesType = seriesOpt.type;

    if (seriesType === 'pie' || seriesType === 'gauge') {
      if (seriesOpt.clockWise != null) {
        seriesOpt.clockwise = seriesOpt.clockWise;
      }
    }

    if (seriesType === 'gauge') {
      var pointerColor = get(seriesOpt, 'pointer.color');
      pointerColor != null && set(seriesOpt, 'itemStyle.normal.color', pointerColor);
    }

    for (var i = 0; i < COMPATITABLE_SERIES.length; i++) {
      if (COMPATITABLE_SERIES[i] === seriesOpt.type) {
        compatLayoutProperties(seriesOpt);
        break;
      }
    }
  }); // dataRange has changed to visualMap

  if (option.dataRange) {
    option.visualMap = option.dataRange;
  }

  each(COMPATITABLE_COMPONENTS, function (componentName) {
    var options = option[componentName];

    if (options) {
      if (!isArray(options)) {
        options = [options];
      }

      each(options, function (option) {
        compatLayoutProperties(option);
      });
    }
  });
}