zh/builder/src/echarts3/coord/axisModelCommonMixin.js

import * as zrUtil from 'zrender/src/core/util';
import * as axisHelper from './axisHelper';

function getName(obj) {
  if (zrUtil.isObject(obj) && obj.value != null) {
    return obj.value;
  } else {
    return obj + '';
  }
}

export default {
  /**
   * Format labels
   * @return {Array.<string>}
   */
  getFormattedLabels: function () {
    return axisHelper.getFormattedLabels(this.axis, this.get('axisLabel.formatter'));
  },

  /**
   * Get categories
   */
  getCategories: function () {
    return this.get('type') === 'category' && zrUtil.map(this.get('data'), getName);
  },

  /**
   * @param {boolean} origin
   * @return {number|string} min value or 'dataMin' or null/undefined (means auto) or NaN
   */
  getMin: function (origin) {
    var option = this.option;
    var min = !origin && option.rangeStart != null ? option.rangeStart : option.min;

    if (this.axis && min != null && min !== 'dataMin' && typeof min !== 'function' && !zrUtil.eqNaN(min)) {
      min = this.axis.scale.parse(min);
    }

    return min;
  },

  /**
   * @param {boolean} origin
   * @return {number|string} max value or 'dataMax' or null/undefined (means auto) or NaN
   */
  getMax: function (origin) {
    var option = this.option;
    var max = !origin && option.rangeEnd != null ? option.rangeEnd : option.max;

    if (this.axis && max != null && max !== 'dataMax' && typeof max !== 'function' && !zrUtil.eqNaN(max)) {
      max = this.axis.scale.parse(max);
    }

    return max;
  },

  /**
   * @return {boolean}
   */
  getNeedCrossZero: function () {
    var option = this.option;
    return option.rangeStart != null || option.rangeEnd != null ? false : !option.scale;
  },

  /**
   * Should be implemented by each axis model if necessary.
   * @return {module:echarts/model/Component} coordinate system model
   */
  getCoordSysModel: zrUtil.noop,

  /**
   * @param {number} rangeStart Can only be finite number or null/undefined or NaN.
   * @param {number} rangeEnd Can only be finite number or null/undefined or NaN.
   */
  setRange: function (rangeStart, rangeEnd) {
    this.option.rangeStart = rangeStart;
    this.option.rangeEnd = rangeEnd;
  },

  /**
   * Reset range
   */
  resetRange: function () {
    // rangeStart and rangeEnd is readonly.
    this.option.rangeStart = this.option.rangeEnd = null;
  }
};