<template>
  <div class="editCell">
    <div class="canEdit" v-if="CanEdit" @click="beginEdit">
      <label v-show="!editStatus">
        <span v-if="this.value!== null && this.value !== undefined && this.value !== ''">{{ value }}{{this.suffix}}</span>
        <span v-else style="padding-left: 100%;padding-top: 100%;"/>
      </label>
      <label v-show="editStatus">
        <input
          type="text"
          class="inputClass"
          ref="input"
          v-on:keyup.13="loseFocus"
          :value="value"
          @blur="loseFocus"
        />
      </label>
    </div>

    <label class="cannotEdit" v-else>
      <span>{{ value }}{{ suffix }}</span>
    </label>
  </div>
</template>

<script>
export default {
  name: "EditCell",
  props: {
    /**
     * 绑定值
     */
    value: {
      required: true
    },
    /**
     * 是否可编辑
     */
    CanEdit: {
      type: Boolean,
      default: true
    },
    /**
     * 格式化函数
     */
    formatData: {
      type: Function,
      default: value => {
        return value;
      }
    },
    /**
     * 编辑后事件
     */
    afterEdit: {
      type: Function,
      default: () => {}
    },
    /**
     * 是否初始格式化
     */
    initFormat: {
      type: Boolean,
      default: false
    },
    suffix: {
      default: ""
    }
  },
  data() {
    return {
      editStatus: false,
      showData: "",
      defaultData: "",
      timeout: null
    };
  },
  methods: {
    /**
     * 单击开始编辑
     */
    beginEdit() {
      this.editStatus = true;
      setTimeout(() => {
        this.$refs.input.focus();
      }, 1);
    },

    /**
     * @param {event} event
     * 丢失焦点关闭编辑状态，并保存数据
     */
    loseFocus(event) {
      let value = this.formatData(event.target.value);
      this.editData(value);
      this.closeEditStatus(value);
      this.afterEdit(value);
    },

    /**
     * 发布input事件修改数据
     * @param value
     */
    editData(value) {
      this.$emit("input", value);
    },

    /**
     * 关闭编辑状态
     * @param value
     */
    closeEditStatus(value) {
      this.editStatus = false;
    },
    /**
     * 初始格式化数据
     */
    initData() {
      let newValue = this.formatData(this.value);
      this.$emit("input", newValue);
    }
  },
  mounted() {
    if (this.initFormat) {
      this.initData();
    }
  },
  watch: {
    'value': function(newVal){
      this.$emit("input", this.formatData(newVal));
    }
  }
};
</script>

<style scoped>
.editCell {
  height: 100%;
  width: 100%;
}
.inputClass {
  height: 30px;
  width: 100%;
  background-color: #fff;
  border-radius: 4px;
  border: 1px solid #dcdfe6;
  color: #606266;
  display: inline-block;
  font-size: inherit;
  line-height: 30px;
  outline: 0;
  padding: 0 15px;
  transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  overflow: visible;
  touch-action: manipulation;
  margin: 0;
}
</style>

import EditCell from "@/components/EditCell/EditCell";
components: { EditCell},

 <el-table-column
    v-for="item in tableColumn"
      :prop="item.dataIndex"
      :label="item.title"
      :width="item.width"
      :align="item.align"
      :key="item.id"
      :fixed="item.fixed"
  >
  	  //此处调用自定义组件（dataIndex 为表头数据中字段，相当于 展示表头 老师对应的 teacher名称）
      <template slot-scope="scope">
          <span v-if="item.dataIndex !== 'batchInvest' && item.dataIndex !== 'remark'">{{scope.row[item.dataIndex]}}</span>
          // 若需要格式化数据 可设置 :format-data="formatFun" formatFun此方法在当前页methods中定义即可
          <edit-cell v-else v-model="scope.row[item.dataIndex]" :can-edit="true"/>
      </template>
      <el-table-column
          v-for="item2 in item.children"
          :prop="item2.dataIndex"
          :label="item2.title"
          :width="item2.width"
          :align="item2.align"
          :key="item2.id"
          :fixed="item2.fixed"
      >
      </el-table-column>
  </el-table-column>