@alicloud/cloud-charts/es/rule/emptyData.js


import { DataStructure } from './data';
import themes from '../themes/index';

/** 空数据处理的三种类型 */
export var EmptyDataProcess = /*#__PURE__*/function (EmptyDataProcess) {
  EmptyDataProcess[EmptyDataProcess["Axis"] = 0] = "Axis";
  EmptyDataProcess[EmptyDataProcess["Polar"] = 1] = "Polar";
  EmptyDataProcess[EmptyDataProcess["Background"] = 2] = "Background";
  return EmptyDataProcess;
}({});

/** 根据数据量判断是否是空数据 */
export function isEmptyData(dataSize) {
  return dataSize === 0;
}

/** 根据空数据处理类型、数据结构类型进行空数据处理，个别图表需要特殊处理 */
export function processEmptyData(emptyType, dataType, chartName) {
  if (emptyType === EmptyDataProcess.Axis) {
    return {
      data: [],
      config: {
        xAxis: {
          min: 0,
          max: 100,
          label: false
        },
        yAxis: {
          min: 0,
          max: 100,
          label: false
        },
        padding: 0,
        guide: {
          visible: false
        },
        zoom: false
      }
    };
  } else if (emptyType === EmptyDataProcess.Polar) {
    if (chartName === 'G2Radar') {
      // 雷达图特殊处理
      return {
        data: [{
          x: 'a',
          y: 0
        }, {
          x: 'b',
          y: 0
        }, {
          x: 'c',
          y: 0
        }, {
          x: 'd',
          y: 0
        }, {
          x: 'e',
          y: 0
        }, {
          x: 'f',
          y: 0
        }],
        config: {
          xAxis: {
            label: false
          },
          yAxis: {
            min: 0,
            max: 100,
            label: false
          },
          legend: false,
          tooltip: false,
          colors: themes['widgets-color-layout-background'],
          zoom: false,
          padding: 0
        }
      };
    } else if (dataType === DataStructure.Common) {
      return {
        data: [{
          x: 'a',
          y: 100
        }],
        config: {
          legend: false,
          tooltip: false,
          colors: themes['widgets-color-layout-background'],
          label: false,
          zoom: false,
          padding: 0
        }
      };
    } else if (dataType === DataStructure.Tree) {
      return {
        data: {
          children: [{
            name: 'root',
            value: 100,
            empty: true
          }]
        },
        config: {
          legend: false,
          tooltip: false,
          colors: themes['widgets-color-layout-background'],
          label: false,
          zoom: false,
          padding: 0
        }
      };
    }
  } else {
    if (dataType === DataStructure.Common) {
      // 分箱图特殊处理
      if (chartName === 'G2Rectangle') {
        return {
          data: [{
            x: 0,
            y: 0
          }],
          config: {
            padding: 0,
            xAxis: false,
            yAxis: false,
            tooltip: false,
            legend: false,
            zoom: false
          }
        };
      }
      return {
        data: [],
        config: {
          padding: 0,
          xAxis: false,
          yAxis: false,
          tooltip: false,
          legend: false,
          zoom: false
        }
      };
    } else if (dataType === DataStructure.Tree) {
      return {
        data: {
          name: '',
          children: []
        },
        config: {
          padding: 0,
          xAxis: false,
          yAxis: false,
          tooltip: false,
          legend: false,
          colors: themes['widgets-color-layout-background'],
          zoom: false
        }
      };
    } else if (dataType === DataStructure.Graph) {
      return {
        data: {
          nodes: [],
          links: []
        },
        config: {
          padding: 0,
          xAxis: false,
          yAxis: false,
          tooltip: false,
          legend: false,
          zoom: false
        }
      };
    }
  }
  return {
    data: null,
    config: null
  };
}