在线补召

src/components/tree/select.vue

@@ -0,0 +1,185 @@
+<template>
+    <div :style="{ width: menuCollapse ? '40px' : props.width }" style='transition: all 0.3s; overflow: hidden;'>
+        <Icon v-show='menuCollapse' @click='onMenuCollapse' :name="menuCollapse ? 'el-icon-Expand' : 'el-icon-Fold'"
+            :class="menuCollapse ? 'unfold' : ''" size='18' class='fold ml10 mt20 menu-collapse'
+            style='cursor: pointer' />
+        <div class='cn-tree' :style='{ opacity: menuCollapse ? 0 : 1 }'>
+            <div style='display: flex; align-items: center' class='mb10'>
+                <el-input maxlength="32" show-word-limit v-model.trim='filterText' placeholder='请输入内容' clearable>
+                    <template #prefix>
+                        <Icon name='el-icon-Search' style='font-size: 16px' />
+                    </template>
+                </el-input>
+            </div>
+            <el-tree :style="{ height:  'calc(100vh)' }"
+                style=' overflow: auto;' ref='treeRef' :props='defaultProps' highlight-current 
+                :filter-node-method='filterNode' node-key='id' v-bind='$attrs'
+                show-checkbox @check="handleCheckChange" :default-checked-keys="defaultCheckedKeys">
+                <template #default='{ node, data }'>
+                    <span class='custom-tree-node'>
+                        <Icon :name='data.icon' style='font-size: 16px' :style='{ color: data.color }'
+                            v-if='data.icon' />
+                        <span style='margin-left: 4px'>{{ node.label }}</span>
+                    </span>
+                </template>
+            </el-tree>
+        </div>
+    </div>
+</template>
+
+<script lang='ts' setup>
+import useCurrentInstance from '@/utils/useCurrentInstance'
+import { ElMessage, ElTree } from 'element-plus'
+import { emit } from 'process';
+import { ref, watch } from 'vue'
+
+defineOptions({
+    name: 'govern/tree'
+})
+
+interface Props {
+    width?: string
+    canExpand?: boolean
+}
+
+const props = withDefaults(defineProps<Props>(), {
+    width: '280px',
+    canExpand: true
+})
+const { proxy } = useCurrentInstance()
+const menuCollapse = ref(false)
+const filterText = ref('')
+const defaultProps = {
+    label: 'name',
+    value: 'id'
+}
+const emit = defineEmits(['changePointType', 'checkedNodesChange'])
+
+watch(filterText, val => {
+    treeRef.value!.filter(val)
+    
+})
+const onMenuCollapse = () => {
+    menuCollapse.value = !menuCollapse.value
+    proxy.eventBus.emit('cnTreeCollapse', menuCollapse)
+}
+const filterNode = (value: string, data: any, node: any) => {
+    if (!value) return true
+    // return data.name.includes(value)
+    if (data.name) {
+
+        return chooseNode(value, data, node)
+    }
+}
+
+// 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.
+const chooseNode = (value: string, data: any, node: any) => {
+
+    if (data.name.indexOf(value) !== -1) {
+        return true
+    }
+    const level = node.level
+    // 如果传入的节点本身就是一级节点就不用校验了
+    if (level === 1) {
+        return false
+    }
+    // 先取当前节点的父节点
+    let parentData = node.parent
+    // 遍历当前节点的父节点
+    let index = 0
+    while (index < level - 1) {
+        // 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
+        if (parentData.data.name.indexOf(value) !== -1) {
+            return true
+        }
+        // 否则的话再往上一层做匹配
+        parentData = parentData.parent
+        index++
+    }
+    // 没匹配到返回false
+    return false
+}
+
+// 存储所有勾选的节点
+const checkedNodes = ref<any[]>([])
+const defaultCheckedKeys = ref<string[]>([])
+// 处理节点勾选变化
+const handleCheckChange = (data: any, checkInfo: any) => {
+    const { checkedNodes: nodes } = checkInfo
+    // 过滤出监测点层级(level=3)的节点
+    const monitoringPointNodes = nodes.filter((node: any) => {
+        // 监测点节点通常具有 comFlag 属性或其他标识
+        return node.level === 3 
+    })
+       // 限制最多只能勾选5个监测点
+    if (monitoringPointNodes.length > 5) {
+        ElMessage.warning('最多只能选择5个监测点')
+        // 保持之前勾选的状态
+        treeRef.value?.setCheckedNodes(checkedNodes.value)
+        return
+    }
+    
+    checkedNodes.value = monitoringPointNodes
+    
+    // 将勾选的监测点节点暴露出去
+    emit('checkedNodesChange', monitoringPointNodes)
+    
+    // 更新节点的可勾选状态
+    updateNodeCheckStatus(monitoringPointNodes.length)
+}
+
+
+// 更新节点的可勾选状态
+const updateNodeCheckStatus = (currentCount: number) => {
+    if (!treeRef.value) return
+    
+    // 如果已经选了5个，则禁用其他未选中的监测点节点
+    const isMaxSelected = currentCount >= 5
+    
+    // 获取所有节点并更新状态
+    const allNodes = treeRef.value.store._getAllNodes()
+    allNodes.forEach((node: any) => {
+        if (node.level === 3) { // 监测点层级
+            // 如果已达到最大数量且该节点未被选中，则禁用勾选
+            if (isMaxSelected && !node.checked) {
+                node.disabled = true
+            } else {
+                node.disabled = false
+            }
+        }
+    })
+}
+
+const treeRef = ref<InstanceType<typeof ElTree>>()
+defineExpose({ treeRef })
+</script>
+
+
+<style lang='scss' scoped>
+.cn-tree {
+    flex-shrink: 0;
+    display: flex;
+    flex-direction: column;
+    box-sizing: border-box;
+    padding: 10px;
+    height: 100%;
+    width: 100%;
+
+    :deep(.el-tree) {
+        border: 1px solid var(--el-border-color);
+    }
+
+    :deep(.el-tree--highlight-current .el-tree-node.is-current > .el-tree-node__content) {
+        background-color: var(--el-color-primary-light-7);
+    }
+
+    .menu-collapse {
+        color: var(--el-color-primary);
+    }
+}
+
+.custom-tree-node {
+    display: flex;
+    align-items: center;
+}
+</style>