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111 lines
2.9 KiB
111 lines
2.9 KiB
<script>
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/* eslint no-console:0 */
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import './draggable.less'
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import Tree, { TreeNode } from '../index'
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import '../assets/index.less'
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import { gData } from './util'
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import BaseMixin from '../../_util/BaseMixin'
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export default {
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mixins: [BaseMixin],
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data () {
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return {
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gData,
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autoExpandParent: true,
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expandedKeys: ['0-0-key', '0-0-0-key', '0-0-0-0-key'],
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}
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},
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methods: {
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onDragStart (info) {
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console.log('start', info)
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},
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onDragEnter (info) {
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console.log('enter', info)
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this.setState({
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expandedKeys: info.expandedKeys,
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})
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},
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onDrop (info) {
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console.log('drop', info)
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const dropKey = info.node.eventKey
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const dragKey = info.dragNode.eventKey
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const dropPos = info.node.pos.split('-')
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const dropPosition = info.dropPosition - Number(dropPos[dropPos.length - 1])
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// const dragNodesKeys = info.dragNodesKeys;
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const loop = (data, key, callback) => {
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data.forEach((item, index, arr) => {
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if (item.key === key) {
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return callback(item, index, arr)
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}
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if (item.children) {
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return loop(item.children, key, callback)
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}
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})
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}
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const data = [...this.gData]
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let dragObj
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loop(data, dragKey, (item, index, arr) => {
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arr.splice(index, 1)
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dragObj = item
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})
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if (info.dropToGap) {
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let ar
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let i
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loop(data, dropKey, (item, index, arr) => {
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ar = arr
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i = index
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})
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if (dropPosition === -1) {
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ar.splice(i, 0, dragObj)
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} else {
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ar.splice(i + 1, 0, dragObj)
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}
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} else {
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loop(data, dropKey, (item) => {
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item.children = item.children || []
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// where to insert 示例添加到尾部，可以是随意位置
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item.children.push(dragObj)
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})
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}
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this.setState({
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gData: data,
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})
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},
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onExpand (expandedKeys) {
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console.log('onExpand', arguments)
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this.setState({
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expandedKeys,
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autoExpandParent: false,
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})
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},
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},
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render () {
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const loop = data => {
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return data.map((item) => {
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if (item.children && item.children.length) {
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return <TreeNode key={item.key} title={item.title}>{loop(item.children)}</TreeNode>
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}
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return <TreeNode key={item.key} title={item.title} />
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})
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}
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return (<div class='draggable-demo'>
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<h2>draggable</h2>
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<p>drag a node into another node</p>
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<div class='draggable-container'>
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<Tree
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expandedKeys={this.expandedKeys}
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onExpand={this.onExpand} autoExpandParent={this.autoExpandParent}
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draggable
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onDragstart={this.onDragStart}
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onDragenter={this.onDragEnter}
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onDrop={this.onDrop}
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>
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{loop(this.gData)}
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</Tree>
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</div>
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</div>)
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},
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}
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</script> |