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-<script lang="ts" setup>
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-import { computed, ref, shallowRef } from "vue"
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-import { type RouteRecordName, type RouteRecordRaw, useRouter } from "vue-router"
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-import { usePermissionStore } from "@/store/modules/permission"
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-import SearchResult from "./SearchResult.vue"
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-import SearchFooter from "./SearchFooter.vue"
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-import { ElMessage, ElScrollbar } from "element-plus"
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-import { cloneDeep, debounce } from "lodash-es"
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-import { useDevice } from "@/hooks/useDevice"
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-import { isExternal } from "@/utils/validate"
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-
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-/** 控制 modal 显隐 */
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-const modelValue = defineModel<boolean>({ required: true })
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-
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-const router = useRouter()
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-const { isMobile } = useDevice()
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-
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-const inputRef = ref<HTMLInputElement | null>(null)
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-const scrollbarRef = ref<InstanceType<typeof ElScrollbar> | null>(null)
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-const searchResultRef = ref<InstanceType<typeof SearchResult> | null>(null)
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-
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-const keyword = ref<string>("")
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-const resultList = shallowRef<RouteRecordRaw[]>([])
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-const activeRouteName = ref<RouteRecordName | undefined>(undefined)
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-/** 是否按下了上键或下键(用于解决和 mouseenter 事件的冲突) */
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-const isPressUpOrDown = ref<boolean>(false)
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-
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-/** 控制搜索对话框宽度 */
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-const modalWidth = computed(() => (isMobile.value ? "80vw" : "40vw"))
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-/** 树形菜单 */
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-const menusData = computed(() => cloneDeep(usePermissionStore().routes))
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-
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-/** 搜索(防抖) */
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-const handleSearch = debounce(() => {
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- const flatMenusData = flatTree(menusData.value)
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- resultList.value = flatMenusData.filter((menu) =>
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- keyword.value ? menu.meta?.title?.toLocaleLowerCase().includes(keyword.value.toLocaleLowerCase().trim()) : false
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- )
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- // 默认选中搜索结果的第一项
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- const length = resultList.value?.length
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- activeRouteName.value = length > 0 ? resultList.value[0].name : undefined
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-}, 500)
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-
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-/** 将树形菜单扁平化为一维数组,用于菜单搜索 */
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-const flatTree = (arr: RouteRecordRaw[], result: RouteRecordRaw[] = []) => {
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- arr.forEach((item) => {
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- result.push(item)
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- item.children && flatTree(item.children, result)
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- })
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- return result
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-}
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-
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-/** 关闭搜索对话框 */
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-const handleClose = () => {
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- modelValue.value = false
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- // 延时处理防止用户看到重置数据的操作
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- setTimeout(() => {
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- keyword.value = ""
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- resultList.value = []
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- }, 200)
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-}
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-
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-/** 根据下标位置进行滚动 */
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-const scrollTo = (index: number) => {
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- if (!searchResultRef.value) return
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- const scrollTop = searchResultRef.value.getScrollTop(index)
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- // 手动控制 el-scrollbar 滚动条滚动,设置滚动条到顶部的距离
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- scrollbarRef.value?.setScrollTop(scrollTop)
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-}
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-
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-/** 键盘上键 */
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-const handleUp = () => {
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- isPressUpOrDown.value = true
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- const { length } = resultList.value
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- if (length === 0) return
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- // 获取该 name 在菜单中第一次出现的位置
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- const index = resultList.value.findIndex((item) => item.name === activeRouteName.value)
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- // 如果已处在顶部
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- if (index === 0) {
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- const bottomName = resultList.value[length - 1].name
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- // 如果顶部和底部的 bottomName 相同,且长度大于 1,就再跳一个位置(可解决遇到首尾两个相同 name 导致的上键不能生效的问题)
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- if (activeRouteName.value === bottomName && length > 1) {
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- activeRouteName.value = resultList.value[length - 2].name
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- scrollTo(length - 2)
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- } else {
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- // 跳转到底部
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- activeRouteName.value = bottomName
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- scrollTo(length - 1)
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- }
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- } else {
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- activeRouteName.value = resultList.value[index - 1].name
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- scrollTo(index - 1)
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- }
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-}
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-
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-/** 键盘下键 */
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-const handleDown = () => {
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- isPressUpOrDown.value = true
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- const { length } = resultList.value
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- if (length === 0) return
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- // 获取该 name 在菜单中最后一次出现的位置(可解决遇到连续两个相同 name 导致的下键不能生效的问题)
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- const index = resultList.value.map((item) => item.name).lastIndexOf(activeRouteName.value)
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- // 如果已处在底部
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- if (index === length - 1) {
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- const topName = resultList.value[0].name
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- // 如果底部和顶部的 topName 相同,且长度大于 1,就再跳一个位置(可解决遇到首尾两个相同 name 导致的下键不能生效的问题)
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- if (activeRouteName.value === topName && length > 1) {
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- activeRouteName.value = resultList.value[1].name
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- scrollTo(1)
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- } else {
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- // 跳转到顶部
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- activeRouteName.value = topName
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- scrollTo(0)
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- }
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- } else {
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- activeRouteName.value = resultList.value[index + 1].name
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- scrollTo(index + 1)
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- }
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-}
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-
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-/** 键盘回车键 */
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-const handleEnter = () => {
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- const { length } = resultList.value
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- if (length === 0) return
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- const name = activeRouteName.value
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- const path = resultList.value.find((item) => item.name === name)?.path
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- if (path && isExternal(path)) {
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- window.open(path, "_blank", "noopener, noreferrer")
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- return
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- }
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- if (!name) {
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- ElMessage.warning("无法通过搜索进入该菜单,请为对应的路由设置唯一的 Name")
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- return
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- }
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- try {
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- router.push({ name })
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- } catch {
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- ElMessage.error("该菜单有必填的动态参数,无法通过搜索进入")
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- return
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- }
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- handleClose()
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-}
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-
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-/** 释放上键或下键 */
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-const handleReleaseUpOrDown = () => {
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- isPressUpOrDown.value = false
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-}
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-</script>
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-
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-<template>
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- <el-dialog
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- v-model="modelValue"
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- @opened="inputRef?.focus()"
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- @closed="inputRef?.blur()"
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- @keydown.up="handleUp"
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- @keydown.down="handleDown"
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- @keydown.enter="handleEnter"
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- @keyup.up.down="handleReleaseUpOrDown"
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- :before-close="handleClose"
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- :width="modalWidth"
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- top="5vh"
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- class="search-modal__private"
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- append-to-body
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- >
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- <el-input ref="inputRef" v-model="keyword" @input="handleSearch" placeholder="搜索菜单" size="large" clearable>
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- <template #prefix>
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- <SvgIcon name="search" />
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- </template>
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- </el-input>
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- <el-empty v-if="resultList.length === 0" description="暂无搜索结果" :image-size="100" />
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- <template v-else>
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- <p>搜索结果</p>
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- <el-scrollbar ref="scrollbarRef" max-height="40vh" always>
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- <SearchResult
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- ref="searchResultRef"
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- v-model="activeRouteName"
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- :list="resultList"
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- :isPressUpOrDown="isPressUpOrDown"
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- @click="handleEnter"
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- />
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- </el-scrollbar>
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- </template>
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- <template #footer>
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- <SearchFooter :total="resultList.length" />
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- </template>
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- </el-dialog>
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-</template>
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-
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-<style lang="scss">
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-.search-modal__private {
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- .svg-icon {
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- font-size: 18px;
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- }
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- .el-dialog__header {
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- display: none;
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- }
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- .el-dialog__footer {
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- border-top: 1px solid var(--el-border-color);
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- padding: var(--el-dialog-padding-primary);
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- }
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-}
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-</style>
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