HtMenuTree.vue
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<template>
<el-scrollbar style="height:100%">
<ht-tree
:data="data"
:props="defaultProps"
:support-filter="supportFilter"
:highlight-current="highlightCurrent"
:default-expand-all="defaultExpandAll"
:default-expanded-keys="defaultExpandedKeys"
:default-checked-keys="defaultCheckedKeys"
:defaultIsOpenKeys="defaultIsOpenKeys"
:node-key="nodeKey"
:show-checkbox="showCheckbox"
:render-content="renderContent"
:expand-on-click-node="false"
@node-click="handleNodeClick"
@node-expand="handleNodeExpand"
@refresh="loadData"
@node-drop="handleDrop"
:filter-node-method="filterNodeMethod"
:allow-drop="allowDrop"
draggable
ref="htMenuTree"
@node-collapse="nodeCollapse"
:check-strictly="false"
>
<!-- 作用域插槽:插槽prop -->
<slot slot-scope="{node, data}" :node="node" :data="data"></slot>
</ht-tree>
</el-scrollbar>
</template>
<script>
import req from '@/request.js'
export default {
name: 'ht-menu-tree',
props: {
supportFilter: {
type: Boolean,
default: false
},
highlightCurrent: {
type: Boolean,
default: false
},
defaultExpandAll: {
type: Boolean,
default: false
},
showCheckbox: {
type: Boolean,
default: false
},
renderContent: {
type: Function
},
defaultCheckedKeys: {
type: Array
},
defaultIsOpenKeys: {
type: Array
},
nodeKey: {
type: String,
default: 'alias'
},
data: {
type: Array,
default: () => {
return []
}
},
defaultExpandedKeys: {
type: Array,
default: () => {
return ['-1', '1', '3']
}
}
},
data() {
return {
treeData: [],
defaultProps: {
children: 'children',
label: 'name',
isOpen: 'isOpen',
disabled: 'disabled',
expanded: 'expanded'
}
}
},
methods: {
allowDrop(draggingNode, dropNode, type) {
let draggingRoot = this.getParent(draggingNode)
let dropRoot = this.getParent(dropNode)
//前端菜单只能拖到前端,后端拖到后端
if (draggingRoot.id != dropRoot.id) {
return false
}
if (
draggingNode.level >= 3 &&
draggingNode.level == dropNode.level &&
// draggingNode.data.parentId != dropNode.data.parentId &&
draggingNode.parent.id == dropNode.parent.id &&
type != 'inner' &&
!draggingNode.data.href &&
!dropNode.data.href
) {
return true
} else {
return false
}
},
getParent(data) {
let res = true
let _menus = data
while (res) {
if (
_menus.parent &&
_menus.data.alias != 'manage_menu' &&
_menus.data.alias != 'front_menu'
) {
_menus = _menus.parent
} else {
_menus = _menus.data
res = false
}
}
return _menus
},
handleDrop(draggingNode, dropNode, dropType, ev) {
//执行拖拽保存的方法
let data = _.cloneDeep(draggingNode.data)
delete data.isOpen //剔除多余入参
let target = dropNode.data
data.parentId = dropNode.parent.data.id
if ('after' == dropType) {
data.sn = target.sn + 1
} else if ('before' == dropType) {
data.sn = target.sn - 1
}
req.post('${portal}/sys/sysMenu/v1/save', data).then(response => {
this.$message({
showClose: true,
message: '保存成功,重新登录之后生效',
type: 'success'
})
})
},
handleNodeClick(data, node) {
this.nodeClick(data, node)
this.$emit('node-click', data, node)
},
//记录展开的节点,刷新时树不会收缩
handleNodeExpand(node) {
if (!this.defaultExpandedKeys.includes(node[this.nodeKey])) {
this.defaultExpandedKeys.push(node[this.nodeKey])
}
},
loadData(cb) {
this.$emit('load', cb)
},
nodeCollapse(data) {
this.defaultExpandedKeys.splice(
this.defaultExpandedKeys.indexOf(data[this.nodeKey]),
1
)
},
filterNodeMethod(value, data, node) {
console.log(value, data, node)
const {name, alias} = data
return name.includes(value) || alias.includes(value)
},
nodeClick(data, node) {
//这个方法是勾选父级子级也默认勾选 取消子级不影响父级
this.childNodesChange(node)
// 这个方法是勾选子级默认把父级也勾选上
this.parentNodesChange(node)
},
childNodesChange(node) {
let len = node.childNodes.length
if (len > 0) {
for (let i = 0; i < len; i++) {
if (!node.checked) {
node.childNodes[i].checked = false
} else {
node.childNodes[i].checked = true
}
this.childNodesChange(node.childNodes[i])
}
}
},
parentNodesChange(node) {
if (node.parent) {
for (let key in node) {
if (key == 'parent') {
node[key].checked = true
this.parentNodesChange(node[key])
}
}
}
}
},
mounted() {
this.loadData()
}
}
</script>
<style lang="scss" scoped>
/deep/ .el-tree .el-tree__empty-block {
margin: 20px 20px;
width: calc(100% - 40px);
}
/deep/ .el-tree {
width: 100%;
}
/deep/ .el-scrollbar__wrap {
overflow-x: hidden;
margin-bottom: 0 !important;
}
</style>