VUE el-tree拖拽
实现树节点拖拽效果，在树中有三层，通过对每一层设置一个专有的属性，通过这个属性来判断点击的是那一层// 第一层设置folderId，第二层设置fileId，第三层设置imgId
// 实现代码，el-tree控件中的draggable可以设置节点可拖拽，allow-drop表示即将放入的节点，allow-drag是移动的节点
<template>
<el-tree :data="data" node-key="id" :expand-on-click-node="false" default-expand-all highlight-current :allow-drop="allowDrop"
:allow-drag="allowDrag" draggable>
<span class="custom-tree-node" slot-scope="{node, data}">
<span class="custom-tree-node-names">
{{node.label}}
</span>
</span>
</el-tree>
</template>
<script>
export default {
data() {
return {
data: [{
id: 1,
label: '一级 1',
folderId: 'fo-1',
children: [{
fileId: 'fi-1',
id: 4,
label: '二级 1-1',
children: [{
imgId: 'im-1',
id: 9,
label: '三级 1-1-1'
}, {
id: 10,
label: '三级 1-1-2'
}]
}]
}, {
id: 2,
label: '一级 2',
folderId: 'fo-2',
children: [{
fileId: 'fi-2',
id: 5,
label: '二级 2-1'
}, {
id: 6,
label: '二级 2-2'
}]
}, {
id: 3,
label: '一级 3',
folderId: 'fo-3',
children: [{
fileId: 'fo-3',
id: 7,
label: '二级 3-1'
}, {
id: 8,
fileId: 'fo-4',
label: '二级 3-2',
children: [{
imgId: 'fo-3',
id: 11,
label: '三级 3-2-1'
}, {
id: 12,
label: '三级 3-2-2'
}, {
id: 13,
label: '三级 3-2-3'
}]
}]
}],
defaultProps: {
children: 'children',
label: 'label'
}
};
},
methods: {
// 判断目标节点能否被放置
allowDrop(moveNode, inNode, type) {
if (inNode.data.fileId) {
// this.removeload()
return type === 'inner'
}
},
// 节点能否被拖拽
allowDrag(draggingNode) {
if (draggingNode.data.imgId) {
return draggingNode
}
},
},
};
</script>
<style>
</style>
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