admin-govern/src/components/tree/index.vue

<template>
    <div :style="{ width: menuCollapse ? '40px' : '280px' }" style="transition: all .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 v-model="filterText" placeholder="请输入内容" clearable>
                    <template #prefix>
                        <Icon name="el-icon-Search" style="font-size: 16px" />
                    </template>
                </el-input>
                <Icon
                    @click="onMenuCollapse"
                    :name="menuCollapse ? 'el-icon-Expand' : 'el-icon-Fold'"
                    :class="menuCollapse ? 'unfold' : ''"
                    size="18"
                    class="fold ml10 menu-collapse"
                    style="cursor: pointer"
                />
            </div>
            <el-tree
                style="flex: 1; overflow: auto"
                ref="treeRef"
                :props="defaultProps"
                v-bind="$attrs"
                highlight-current
                default-expand-all
                :filter-node-method="filterNode"
                node-key="id"
            >
                <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 { ElTree } from 'element-plus'
import { ref, watch } from 'vue'

defineOptions({
    name: 'govern/tree'
})
const { proxy } = useCurrentInstance()
const menuCollapse = ref(false)
const filterText = ref('')
const defaultProps = {
    label: 'name',
    value: 'id'
}
watch(filterText, val => {
    treeRef.value!.filter(val)
})
const onMenuCollapse = () => {
    menuCollapse.value = !menuCollapse.value
    proxy.eventBus.emit('cnTreeCollapse', menuCollapse)
}
const filterNode = (value: string, data: any) => {
    if (!value) return true
    return data.name.includes(value)
}
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: 280px;
    :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>