本例子是基于vue編寫，拖拽組件采用的是vue Draggable

目標

1. 左側列表不能排序，不接收其它列表數(shù)據(jù)。
2. 右側列表接收左側的拖動數(shù)據(jù)，并克隆左側拖動數(shù)據(jù)的副本到本身列表中。
3. 右側列表支持排序

下載demo

先從Vue.Draggable下載作者自己demo,本例子會基于作者的demo進行調整。

命令

npm install 安裝依賴
npm run serve 啟動服務

實例

貼出代碼 Hello.vue

<template>
  <div class="fluid container">
    <div class="form-group form-group-lg panel panel-default">
      <div class="panel-heading">
        <h3 class="panel-title">Sortable control</h3>
      </div>
      <div class="panel-body">
        <div class="checkbox">
          <label><input type="checkbox" v-model="editable">Enable drag and drop</label>
        </div>
        <button type="button" class="btn btn-default" @click="orderList">Sort by original order</button>
      </div>
    </div>

    <div class="col-md-3">
      <draggable class="list-group" tag="ul" v-model="list" v-bind="dragOptions" :move="onMove" @start="isDragging=true" @end="isDragging=false">
        <transition-group type="transition" :name="'flip-list'">
          <li class="list-group-item" v-for="element in list" :key="element.order">
            <i :class="element.fixed? 'fa fa-anchor' : 'glyphicon glyphicon-pushpin'" @click=" element.fixed=! element.fixed" aria-hidden="true"></i>
            {{element.name}}
            <span class="badge">{{element.order}}</span>
          </li>
        </transition-group>
      </draggable>
    </div>

    <div class="col-md-3">
      <draggable element="span" v-model="list2" v-bind="dragOptions2" :move="onMove">
        <transition-group name="no" class="list-group" tag="ul">
          <li class="list-group-item" v-for="(element,index) in list2" :key="element.order + '_' + index">
            <i :class="element.fixed? 'fa fa-anchor' : 'glyphicon glyphicon-pushpin'" @click=" element.fixed=! element.fixed" aria-hidden="true"></i>
            {{element.name}}
            <span class="badge">{{element.order}}</span>
          </li>
        </transition-group>
      </draggable>
    </div>

    <div class="list-group col-md-3">
      <pre>{{listString}}</pre>
    </div>
    <div class="list-group col-md-3">
      <pre>{{list2String}}</pre>
    </div>
  </div>
</template>

<script>
import draggable from "vuedraggable";
const message = [
  "vue.draggable",
  "draggable",
  "component",
  "for",
  "vue.js 2.0",
  "based",
  "on",
  "Sortablejs"
];

export default {
  name: "hello",
  components: {
    draggable
  },
  data() {
    return {
      list: message.map((name, index) => {
        return { name, order: index + 1, fixed: false };
      }),
      list2: [],
      editable: true,
      isDragging: false,
      delayedDragging: false
    };
  },
  methods: {
    orderList() {
      this.list = this.list.sort((one, two) => {
        return one.order - two.order;
      });
    },
    onMove({ relatedContext, draggedContext }) {
      const relatedElement = relatedContext.element;
      const draggedElement = draggedContext.element;
      return (
        (!relatedElement || !relatedElement.fixed) && !draggedElement.fixed
      );
    }
  },
  computed: {
    dragOptions() {
      return {
        animation: 0,
        group: {
          name: "description",
          pull: "clone",
          put: false
        },
        sort: false,

        disabled: !this.editable,
        ghostClass: "ghost"
      };
    },
    dragOptions2() {
      return {
        animation: 0,
        group: "description",
        disabled: !this.editable,
        ghostClass: "ghost"
      };
    },
    listString() {
      return JSON.stringify(this.list, null, 2);
    },
    list2String() {
      return JSON.stringify(this.list2, null, 2);
    }
  },
  watch: {
    isDragging(newValue) {
      if (newValue) {
        this.delayedDragging = true;
        return;
      }
      this.$nextTick(() => {
        this.delayedDragging = false;
      });
    }
  }
};
</script>

<style>
.flip-list-move {
  transition: transform 0.5s;
}

.no-move {
  transition: transform 0s;
}

.ghost {
  opacity: 0.5;
  background: #c8ebfb;
}

.list-group {
  min-height: 20px;
}

.list-group-item {
  cursor: move;
}

.list-group-item i {
  cursor: pointer;
}
</style>

參數(shù)說明

計算函數(shù)dragOptions為左側列表的v-bing屬性。計算函數(shù)dragOptions2為右側列表v-bing屬性。

group: 定義了兩個列表同屬一個分組，分組間做相互拖動。

pull: "clone" 代表左側單元的拖動采用拷貝方式，如果不設置該值，將采用移動的方式，即左側數(shù)據(jù)元素拖動到右側列表后，左側列表中的該數(shù)據(jù)元素會消失。

put: false 代表本列表不支持外部數(shù)據(jù)拖入。

sort: false 代表本列表不支持拖動排序。