第一次提交

src/components/icon-svg/index.vue

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+<template>
+  <svg
+    :class="getClassName"
+    :width="width"
+    :height="height"
+    aria-hidden="true">
+    <use :xlink:href="getName"></use>
+  </svg>
+</template>
+
+<script>
+  export default {
+    name: 'icon-svg',
+    props: {
+      name: {
+        type: String,
+        required: true
+      },
+      className: {
+        type: String
+      },
+      width: {
+        type: String
+      },
+      height: {
+        type: String
+      }
+    },
+    computed: {
+      getName () {
+        return `#icon-${this.name}`
+      },
+      getClassName () {
+        return [
+          'icon-svg',
+          `icon-svg__${this.name}`,
+          this.className && /\S/.test(this.className) ? `${this.className}` : ''
+        ]
+      }
+    }
+  }
+</script>
+
+<style>
+  .icon-svg {
+    width: 1em;
+    height: 1em;
+    fill: currentColor;
+    overflow: hidden;
+  }
+</style>

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="childStyles(scope.row)">
+        <i :class="iconClasses(scope.row)" :style="iconStyles(scope.row)"></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: 'parentId'
+      },
+      levelKey: {
+        type: String,
+        default: '_level'
+      },
+      childKey: {
+        type: String,
+        default: 'children'
+      }
+    },
+    methods: {
+      childStyles (row) {
+        return { 'padding-left': (row[this.levelKey] > 1 ? row[this.levelKey] * 7 : 0) + 'px' }
+      },
+      iconClasses (row) {
+        return [ !row._expanded ? 'el-icon-caret-right' : 'el-icon-caret-bottom' ]
+      },
+      iconStyles (row) {
+        return { 'visibility': this.hasChild(row) ? 'visible' : 'hidden' }
+      },
+      hasChild (row) {
+        return (isArray(row[this.childKey]) && row[this.childKey].length >= 1) || false
+      },
+      // 切换处理
+      toggleHandle (index, row) {
+        if (this.hasChild(row)) {
+          var data = this.$parent.store.states.data.slice(0)
+          data[index]._expanded = !data[index]._expanded
+          if (data[index]._expanded) {
+            data = data.splice(0, index + 1).concat(row[this.childKey]).concat(data)
+          } else {
+            data = this.removeChildNode(data, row[this.treeKey])
+          }
+          this.$parent.store.commit('setData', data)
+          this.$nextTick(() => {
+            this.$parent.doLayout()
+          })
+        }
+      },
+      // 移除子节点
+      removeChildNode (data, parentId) {
+        var parentIds = isArray(parentId) ? parentId : [parentId]
+        if (parentId.length <= 0) {
+          return data
+        }
+        var ids = []
+        for (var i = 0; i < data.length; i++) {
+          if (parentIds.indexOf(data[i][this.parentKey]) !== -1 && parentIds.indexOf(data[i][this.treeKey]) === -1) {
+            data[i]._expanded = false
+            ids.push(data.splice(i, 1)[0][this.treeKey])
+            i--
+          }
+        }
+        return this.removeChildNode(data, ids)
+      }
+    }
+  }
+</script>