@antv/f2/es/attr/base.js

import { mix, isFunction, isNil, isArray, valuesOfKey } from '@antv/util';
var Base = /** @class */function () {
  function Base(options) {
    mix(this, options);
    var _a = this,
      scale = _a.scale,
      field = _a.field,
      data = _a.data;
    if (!scale && data) {
      var values = valuesOfKey(data, field);
      this.scale = this.createScale({
        values: values,
        field: field
      });
    }
  }
  Base.prototype.createScale = function (_scaleConfig) {
    return null;
  };
  // 数据映射方法
  Base.prototype._mapping = function (value) {
    return value;
  };
  Base.prototype.update = function (options) {
    mix(this, options);
  };
  Base.prototype.setRange = function (range) {
    this.range = range;
  };
  // 归一化，参数是原始数据，返回是归一化的数据
  Base.prototype.normalize = function (value) {
    var scale = this.scale;
    if (isArray(value)) {
      return value.map(function (v) {
        return scale.scale(v);
      });
    }
    return scale.scale(value);
  };
  // convert 参数是归一化的数据，返回定义域的值
  Base.prototype.convert = function (value) {
    return value;
  };
  // 等于 normalize + convert， 参数是原始数据，返回是定义域的值
  Base.prototype.mapping = function (value, child) {
    if (child === void 0) {
      child = null;
    }
    var rst = isFunction(this.callback) ? this.callback(value, child) : null;
    if (!isNil(rst)) {
      return rst;
    }
    return this._mapping(value);
  };
  return Base;
}();
export default Base;