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epmet-oper-web/src/components/table-tree-column/index.vue

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+<template>
+  <el-table-column :prop="prop" v-bind="$attrs">
+    <template slot-scope="scope">
+      <span @click.prevent="toggleHandle(scope.$index, scope.row)" :style="{ 'padding-left': ((scope.row._level || 0) * 10) + 'px' }">
+        <i :class="[ scope.row._expanded ? 'el-icon-caret-bottom' : 'el-icon-caret-right' ]" :style="{ 'visibility': hasChild(scope.row) ? 'visible' : 'hidden' }"></i>
+        {{ scope.row[prop] }}
+      </span>
+    </template>
+  </el-table-column>
+</template>
+
+<script>
+import isArray from 'lodash/isArray'
+export default {
+  name: 'table-tree-column',
+  props: {
+    prop: {
+      type: String
+    },
+    treeKey: {
+      type: String,
+      default: 'id'
+    },
+    parentKey: {
+      type: String,
+      default: 'pid'
+    },
+    childKey: {
+      type: String,
+      default: 'children'
+    }
+  },
+  methods: {
+    hasChild (row) {
+      return (isArray(row[this.childKey]) && row[this.childKey].length >= 1) || false
+    },
+    // 切换处理
+    toggleHandle (index, row) {
+      if (!this.hasChild(row)) {
+        return false
+      }
+      var data = this.$parent.store.states.data.slice(0)
+      data[index]._expanded = !data[index]._expanded
+      if (data[index]._expanded) {
+        row[this.childKey].forEach(item => {
+          item._level = (row._level || 0) + 1
+          item._expanded = false
+        })
+        data = data.splice(0, index + 1).concat(row[this.childKey]).concat(data)
+      } else {
+        data = this.removeChildNode(data, row[this.treeKey])
+      }
+      this.$parent.store.commit('setData', data)
+      this.$nextTick(() => {
+        this.$parent.doLayout()
+      })
+    },
+    // 移除子节点
+    removeChildNode (data, pid) {
+      var pids = isArray(pid) ? pid : [pid]
+      if (pid.length <= 0) {
+        return data
+      }
+      var ids = []
+      for (var i = 0; i < data.length; i++) {
+        if (pids.indexOf(data[i][this.parentKey]) !== -1 && pids.indexOf(data[i][this.treeKey]) === -1) {
+          ids.push(data.splice(i, 1)[0][this.treeKey])
+          i--
+        }
+      }
+      return this.removeChildNode(data, ids)
+    }
+  }
+}
+</script>