264 lines
8.5 KiB
Vue
264 lines
8.5 KiB
Vue
<template>
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<div :style="{ width: menuCollapse ? '40px' : props.width }" style='transition: all 0.3s; overflow: hidden;'>
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<Icon v-show='menuCollapse' @click='onMenuCollapse' :name="menuCollapse ? 'el-icon-Expand' : 'el-icon-Fold'"
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:class="menuCollapse ? 'unfold' : ''" size='18' class='fold ml10 mt20 menu-collapse'
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style='cursor: pointer' />
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<div class='cn-tree' :style='{ opacity: menuCollapse ? 0 : 1 }'>
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<div style='display: flex; align-items: center' class='mb10'>
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<el-input maxlength="32" show-word-limit v-model.trim='filterText' placeholder='请输入内容' clearable>
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<template #prefix>
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<Icon name='el-icon-Search' style='font-size: 16px' />
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</template>
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</el-input>
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</div>
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<el-tree
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:style="{ height: 'calc(100vh)' }"
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style='overflow: auto;'
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ref='treeRef'
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:props='defaultProps'
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highlight-current
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:filter-node-method='filterNode'
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node-key='id'
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show-checkbox
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@check="handleCheckChange"
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@node-click="handleNodeClick"
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:default-checked-keys="defaultCheckedKeys"
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v-bind='$attrs'
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:default-expand-all="false"
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>
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<template #default='{ node, data }'>
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<span class='custom-tree-node'>
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<Icon :name='data.icon' style='font-size: 16px' :style='{ color: data.color }'
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v-if='data.icon' />
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<span style='margin-left: 4px'>{{ node.label }}</span>
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</span>
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</template>
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</el-tree>
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</div>
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</div>
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</template>
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<script lang='ts' setup>
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import useCurrentInstance from '@/utils/useCurrentInstance'
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import { ElMessage, ElTree } from 'element-plus'
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import { emit } from 'process';
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import { ref, watch } from 'vue'
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defineOptions({
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name: 'govern/tree'
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})
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interface Props {
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width?: string
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canExpand?: boolean
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}
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const props = withDefaults(defineProps<Props>(), {
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width: '280px',
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canExpand: true
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})
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const { proxy } = useCurrentInstance()
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const menuCollapse = ref(false)
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const filterText = ref('')
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const defaultProps = {
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label: 'name',
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value: 'id'
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}
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const emit = defineEmits(['changePointType', 'checkedNodesChange'])
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watch(filterText, val => {
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treeRef.value!.filter(val)
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})
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const onMenuCollapse = () => {
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menuCollapse.value = !menuCollapse.value
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proxy.eventBus.emit('cnTreeCollapse', menuCollapse)
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}
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const filterNode = (value: string, data: any, node: any) => {
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if (!value) return true
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// return data.name.includes(value)
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if (data.name) {
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return chooseNode(value, data, node)
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}
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}
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// 过滤父节点 / 子节点 (如果输入的参数是父节点且能匹配，则返回该节点以及其下的所有子节点；如果参数是子节点，则返回该节点的父节点。name是中文字符，enName是英文字符.
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const chooseNode = (value: string, data: any, node: any) => {
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if (data.name.indexOf(value) !== -1) {
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return true
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}
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const level = node.level
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// 如果传入的节点本身就是一级节点就不用校验了
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if (level === 1) {
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return false
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}
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// 先取当前节点的父节点
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let parentData = node.parent
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// 遍历当前节点的父节点
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let index = 0
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while (index < level - 1) {
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// 如果匹配到直接返回，此处name值是中文字符，enName是英文字符。判断匹配中英文过滤
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if (parentData.data.name.indexOf(value) !== -1) {
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return true
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}
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// 否则的话再往上一层做匹配
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parentData = parentData.parent
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index++
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}
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// 没匹配到返回false
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return false
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}
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// 处理节点点击事件
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const handleNodeClick = (data: any, node: any, event: any) => {
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}
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// 存储所有勾选的节点
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const checkedNodes = ref<any[]>([])
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const defaultCheckedKeys = ref<string[]>([])
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// 处理节点勾选变化
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const handleCheckChange = (data: any, checkInfo: any) => {
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const { checkedNodes: nodes } = checkInfo
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// 过滤出监测点层级(level=3)的节点
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const monitoringPointNodes = nodes.filter((node: any) => {
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return node.level === 3
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})
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// 限制最多只能勾选5个监测点
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if (monitoringPointNodes.length > 5) {
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// 获取之前选中的节点
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const previousCheckedNodes = checkedNodes.value || []
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// 计算新增的节点
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const newNodes = monitoringPointNodes.filter(
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(node: any) => !previousCheckedNodes.some((prev: any) => prev.id === node.id)
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)
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// 如果是从父级勾选导致超过限制，保留前几个直到达到限制数量
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if (newNodes.length > 0) {
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const allowedNewCount = 5 - previousCheckedNodes.length
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if (allowedNewCount > 0) {
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// 允许添加allowedNewCount个新节点
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const allowedNewNodes = newNodes.slice(0, allowedNewCount)
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const finalNodes = [...previousCheckedNodes, ...allowedNewNodes]
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checkedNodes.value = finalNodes
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// 设置树的勾选状态为正确的节点
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treeRef.value?.setCheckedNodes(finalNodes)
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// 将勾选的监测点节点暴露出去
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emit('checkedNodesChange', finalNodes)
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// 更新节点的可勾选状态
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updateNodeCheckStatus(finalNodes.length)
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// 只有在真正超过5个时才提示警告
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if (monitoringPointNodes.length > 5) {
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ElMessage.warning('最多只能选择5个监测点')
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}
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return
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}
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}
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// 其他情况回滚到之前的状态
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ElMessage.warning('最多只能选择5个监测点')
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treeRef.value?.setCheckedNodes(checkedNodes.value)
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return
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}
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checkedNodes.value = monitoringPointNodes
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// 将勾选的监测点节点暴露出去
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emit('checkedNodesChange', monitoringPointNodes)
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// 更新节点的可勾选状态
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updateNodeCheckStatus(monitoringPointNodes.length)
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}
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// 处理节点勾选变化
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const handleCheckChange2 = (data: any, checkInfo: any) => {
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const { checkedNodes: nodes } = checkInfo
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// 过滤出监测点层级(level=3)的节点
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const monitoringPointNodes = nodes.filter((node: any) => {
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// 监测点节点通常具有 comFlag 属性或其他标识
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return node.level === 3
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})
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// 限制最多只能勾选5个监测点
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if (monitoringPointNodes.length > 5) {
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ElMessage.warning('最多只能选择5个监测点')
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// 保持之前勾选的状态
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treeRef.value?.setCheckedNodes(checkedNodes.value)
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return
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}
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checkedNodes.value = monitoringPointNodes
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// 将勾选的监测点节点暴露出去
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emit('checkedNodesChange', monitoringPointNodes)
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// 更新节点的可勾选状态
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updateNodeCheckStatus(monitoringPointNodes.length)
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}
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// 更新节点的可勾选状态
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const updateNodeCheckStatus = (currentCount: number) => {
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if (!treeRef.value) return
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// 如果已经选了5个，则禁用其他未选中的监测点节点
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const isMaxSelected = currentCount >= 5
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// 获取所有节点并更新状态
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const allNodes = treeRef.value.store._getAllNodes()
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allNodes.forEach((node: any) => {
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if (node.level === 3) { // 监测点层级
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// 如果已达到最大数量且该节点未被选中，则禁用勾选
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if (isMaxSelected && !node.checked) {
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node.disabled = true
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} else {
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node.disabled = false
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}
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}
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})
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}
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const treeRef = ref<InstanceType<typeof ElTree>>()
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defineExpose({ treeRef })
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</script>
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<style lang='scss' scoped>
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.cn-tree {
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flex-shrink: 0;
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display: flex;
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flex-direction: column;
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box-sizing: border-box;
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padding: 10px;
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height: 100%;
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width: 100%;
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:deep(.el-tree) {
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border: 1px solid var(--el-border-color);
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}
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:deep(.el-tree--highlight-current .el-tree-node.is-current > .el-tree-node__content) {
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background-color: var(--el-color-primary-light-7);
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}
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.menu-collapse {
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color: var(--el-color-primary);
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}
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}
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.custom-tree-node {
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display: flex;
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align-items: center;
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}
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</style>
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