<template>
  <el-table
    size="small"
    :data="tableData"
    :row-key="handleRowKeyMethod"
    :span-method="handleSpanMethod"
    :toggleRowSelection="toggleRowSelection"
    @selection-change="handleSelectionChange"
    @sort-change="handleSortChange"
    @row-click="handleRowClick"
    :row-class-name="tableRowClassName"
    :empty-text="emptytxt ? emptytxt : emptyText"
    border
    style="width: 100%"
    height="520"
  >
    <el-table-column
      v-for="column in columns"
      :key="column.prop"
      :type="column.type"
      :index="handleIndexMethod"
      :selectable="handleSelectableMethod"
      :prop="column.prop"
      :label="column.label"
      :width="column.width"
      :sortable="column.sortable"
      :show-overflow-tooltip="column.tooltip"
      :align="column.align || 'left'"
      :formatter="column.formatter"
      :reserve-selection="column.reserveSelection"
      :subColumns="column.subColumns"
      :fixed="column.fixed"
    >
      <el-table-column
        v-for="sunColumn in column.subColumns"
        :key="sunColumn.prop"
        :type="sunColumn.type"
        :prop="sunColumn.prop"
        :label="sunColumn.label"
        :width="sunColumn.width"
        :sortable="sunColumn.sortable"
        :align="sunColumn.align || 'left'"
        :formatter="sunColumn.formatter"
      />
    </el-table-column>
  </el-table>
</template>

<script>
export default {
  props: {
    handleRowKeyMethod: {
      type: Function,
      required: false,
      default: (row) => {
        return row.id;
      },
    },
    handleSelectableMethod: {
      type: Function,
      required: false,
      default: () => {},
    },
    handleIndexMethod: {
      type: Function,
      required: false,
      default: () => {},
    },
    handleSpanMethod: {
      type: Function,
      required: false,
      default: () => {},
    },
    handleSelectionChange: {
      type: Function,
      required: false,
      default: () => {},
    },
    handleRowClick: {
      type: Function,
      required: false,
      default: () => {},
    },
    handleSortChange: {
      type: Function,
      required: false,
      default: () => {},
    },
    tableRowClassName: {
      type: Function,
      required: false,
      default: () => {},
    },
    loading: {
      type: Boolean,
      required: false,
      default: true,
    },
    tableData: {
      type: Array,
      required: false,
      default: () => [],
    },
    columns: {
      type: Array,
      required: false,
      default: () => [],
    },
  },
  computed: {
    emptyText() {
      return !this.loading && !this.tableData.length ? "暂无数据" : "加载中...";
    },
  },
  mounted() {
  },
  watch: {
    tableData(val) {
      val.length == 0 || val.length > 0
        ? (this.emptytxt = "暂无数据")
        : (this.emptytxt = "加载中...");
    },
  },
  methods: {},
  data() {
    return {
      emptytxt: "",
    };
  },
};
</script>
