From 2235612070ef3c00a9c3c920a2dc3c02268d1f22 Mon Sep 17 00:00:00 2001
From: WangHe <51102@163.com>
Date: Wed, 6 Aug 2025 19:14:19 +0800
Subject: [PATCH] fix: Click outside the drop-down box to not hide

---
 frontend/src/components/Dropdown.vue    | 162 ++++++++++++++++--------
 frontend/src/directives/clickOutside.js | 159 +++++++++++++++++++++++
 frontend/src/main.js                    |  10 +-
 3 files changed, 274 insertions(+), 57 deletions(-)
 create mode 100644 frontend/src/directives/clickOutside.js

diff --git a/frontend/src/components/Dropdown.vue b/frontend/src/components/Dropdown.vue
index 27f5a641c..062521262 100644
--- a/frontend/src/components/Dropdown.vue
+++ b/frontend/src/components/Dropdown.vue
@@ -1,13 +1,24 @@
 <template>
   <div class="dropdown" ref="wrapper">
     <div class="dropdown-display" @click="toggle">
-      <slot name="display" :selected="selectedLabels" :toggle="toggle" :search="search" :setSearch="setSearch">
+      <slot
+        name="display"
+        :selected="selectedLabels"
+        :toggle="toggle"
+        :search="search"
+        :setSearch="setSearch"
+      >
         <template v-if="multiple">
           <span v-if="selectedLabels.length">
             <template v-for="(label, idx) in selectedLabels" :key="label.id">
               <div class="selected-label">
                 <template v-if="label.icon">
-                    <img v-if="isImageIcon(label.icon)" :src="label.icon" class="option-icon" :alt="label.name" />
+                  <img
+                    v-if="isImageIcon(label.icon)"
+                    :src="label.icon"
+                    class="option-icon"
+                    :alt="label.name"
+                  />
                   <i v-else :class="['option-icon', label.icon]"></i>
                 </template>
                 <span>{{ label.name }}</span>
@@ -21,7 +32,12 @@
           <span v-if="selectedLabels.length">
             <div class="selected-label">
               <template v-if="selectedLabels[0].icon">
-                  <img v-if="isImageIcon(selectedLabels[0].icon)" :src="selectedLabels[0].icon" class="option-icon" :alt="selectedLabels[0].name" />
+                <img
+                  v-if="isImageIcon(selectedLabels[0].icon)"
+                  :src="selectedLabels[0].icon"
+                  class="option-icon"
+                  :alt="selectedLabels[0].name"
+                />
                 <i v-else :class="['option-icon', selectedLabels[0].icon]"></i>
               </template>
               <span>{{ selectedLabels[0].name }}</span>
@@ -32,20 +48,46 @@
         <i class="fas fa-caret-down dropdown-caret"></i>
       </slot>
     </div>
-    <div v-if="open && !isMobile && (loading || filteredOptions.length > 0 || showSearch)" :class="['dropdown-menu', menuClass]">
+    <div
+      v-if="
+        open &&
+        !isMobile &&
+        (loading || filteredOptions.length > 0 || showSearch)
+      "
+      :class="['dropdown-menu', menuClass]"
+      v-click-outside="close"
+    >
       <div v-if="showSearch" class="dropdown-search">
         <i class="fas fa-search search-icon"></i>
         <input type="text" v-model="search" placeholder="搜索" />
       </div>
       <div v-if="loading" class="dropdown-loading">
-        <l-hatch size="20" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
+        <l-hatch
+          size="20"
+          stroke="4"
+          speed="3.5"
+          color="var(--primary-color)"
+        ></l-hatch>
       </div>
       <template v-else>
-        <div v-for="o in filteredOptions" :key="o.id" @click="select(o.id)"
-          :class="['dropdown-option', optionClass, { 'selected': isSelected(o.id) }]">
+        <div
+          v-for="o in filteredOptions"
+          :key="o.id"
+          @click="select(o.id)"
+          :class="[
+            'dropdown-option',
+            optionClass,
+            { selected: isSelected(o.id) },
+          ]"
+        >
           <slot name="option" :option="o" :isSelected="isSelected(o.id)">
             <template v-if="o.icon">
-                <img v-if="isImageIcon(o.icon)" :src="o.icon" class="option-icon" :alt="o.name" />
+              <img
+                v-if="isImageIcon(o.icon)"
+                :src="o.icon"
+                class="option-icon"
+                :alt="o.name"
+              />
               <i v-else :class="['option-icon', o.icon]"></i>
             </template>
             <span>{{ o.name }}</span>
@@ -65,14 +107,32 @@
             <input type="text" v-model="search" placeholder="搜索" />
           </div>
           <div v-if="loading" class="dropdown-loading">
-            <l-hatch size="20" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
+            <l-hatch
+              size="20"
+              stroke="4"
+              speed="3.5"
+              color="var(--primary-color)"
+            ></l-hatch>
           </div>
           <template v-else>
-            <div v-for="o in filteredOptions" :key="o.id" @click="select(o.id)"
-              :class="['dropdown-option', optionClass, { 'selected': isSelected(o.id) }]">
+            <div
+              v-for="o in filteredOptions"
+              :key="o.id"
+              @click="select(o.id)"
+              :class="[
+                'dropdown-option',
+                optionClass,
+                { selected: isSelected(o.id) },
+              ]"
+            >
               <slot name="option" :option="o" :isSelected="isSelected(o.id)">
                 <template v-if="o.icon">
-                  <img v-if="isImageIcon(o.icon)" :src="o.icon" class="option-icon" :alt="o.name" />
+                  <img
+                    v-if="isImageIcon(o.icon)"
+                    :src="o.icon"
+                    class="option-icon"
+                    :alt="o.name"
+                  />
                   <i v-else :class="['option-icon', o.icon]"></i>
                 </template>
                 <span>{{ o.name }}</span>
@@ -86,47 +146,49 @@
 </template>
 
 <script>
-import { ref, computed, watch, onMounted, onBeforeUnmount } from 'vue'
-import { hatch } from 'ldrs'
-import { isMobile } from '../utils/screen'
+import { ref, computed, watch, onMounted } from "vue"
+import { hatch } from "ldrs"
+import { isMobile } from "../utils/screen"
 hatch.register()
 
 export default {
-  name: 'BaseDropdown',
+  name: "BaseDropdown",
   props: {
     modelValue: { type: [Array, String, Number], default: () => [] },
-    placeholder: { type: String, default: '返回' },
+    placeholder: { type: String, default: "返回" },
     multiple: { type: Boolean, default: false },
     fetchOptions: { type: Function, required: true },
     remote: { type: Boolean, default: false },
-    menuClass: { type: String, default: '' },
-    optionClass: { type: String, default: '' },
+    menuClass: { type: String, default: "" },
+    optionClass: { type: String, default: "" },
     showSearch: { type: Boolean, default: true },
-    initialOptions: { type: Array, default: () => [] }
+    initialOptions: { type: Array, default: () => [] },
   },
-  emits: ['update:modelValue', 'update:search', 'close'],
+  emits: ["update:modelValue", "update:search", "close"],
   setup(props, { emit, expose }) {
     const open = ref(false)
-    const search = ref('')
+    const search = ref("")
     const setSearch = (val) => {
       search.value = val
     }
-    const options = ref(Array.isArray(props.initialOptions) ? [...props.initialOptions] : [])
+    const options = ref(
+      Array.isArray(props.initialOptions) ? [...props.initialOptions] : []
+    )
     const loaded = ref(false)
     const loading = ref(false)
     const wrapper = ref(null)
 
     const toggle = () => {
       open.value = !open.value
-      if (!open.value) emit('close')
+      if (!open.value) emit("close")
     }
 
     const close = () => {
       open.value = false
-      emit('close')
+      emit("close")
     }
 
-    const select = id => {
+    const select = (id) => {
       if (props.multiple) {
         const arr = Array.isArray(props.modelValue) ? [...props.modelValue] : []
         const idx = arr.indexOf(id)
@@ -135,28 +197,23 @@ export default {
         } else {
           arr.push(id)
         }
-        emit('update:modelValue', arr)
+        emit("update:modelValue", arr)
       } else {
-        emit('update:modelValue', id)
+        emit("update:modelValue", id)
         close()
       }
-      search.value = ''
+      search.value = ""
     }
 
     const filteredOptions = computed(() => {
       if (props.remote) return options.value
       if (!search.value) return options.value
-      return options.value.filter(o => o.name.toLowerCase().includes(search.value.toLowerCase()))
+      return options.value.filter((o) =>
+        o.name.toLowerCase().includes(search.value.toLowerCase())
+      )
     })
 
-    const clickOutside = e => {
-      if (isMobile) return
-      if (wrapper.value && !wrapper.value.contains(e.target)) {
-        close()
-      }
-    }
-
-    const loadOptions = async (kw = '') => {
+    const loadOptions = async (kw = "") => {
       if (!props.remote && loaded.value) return
       try {
         loading.value = true
@@ -172,14 +229,14 @@ export default {
 
     watch(
       () => props.initialOptions,
-      val => {
+      (val) => {
         if (Array.isArray(val)) {
           options.value = [...val]
         }
       }
     )
 
-    watch(open, async val => {
+    watch(open, async (val) => {
       if (val) {
         if (props.remote) {
           await loadOptions(search.value)
@@ -189,39 +246,36 @@ export default {
       }
     })
 
-    watch(search, async val => {
-      emit('update:search', val)
+    watch(search, async (val) => {
+      emit("update:search", val)
       if (props.remote && open.value) {
         await loadOptions(val)
       }
     })
 
     onMounted(() => {
-      document.addEventListener('click', clickOutside)
       if (!props.remote) {
         loadOptions()
       }
     })
 
-    onBeforeUnmount(() => {
-      document.removeEventListener('click', clickOutside)
-    })
-
     const selectedLabels = computed(() => {
       if (props.multiple) {
-        return options.value.filter(o => (props.modelValue || []).includes(o.id))
+        return options.value.filter((o) =>
+          (props.modelValue || []).includes(o.id)
+        )
       }
-      const match = options.value.find(o => o.id === props.modelValue)
+      const match = options.value.find((o) => o.id === props.modelValue)
       return match ? [match] : []
     })
 
     const isSelected = (id) => {
-      return selectedLabels.value.some(label => label.id === id)
+      return selectedLabels.value.some((label) => label.id === id)
     }
 
-    const isImageIcon = icon => {
+    const isImageIcon = (icon) => {
       if (!icon) return false
-      return /^https?:\/\//.test(icon) || icon.startsWith('/')
+      return /^https?:\/\//.test(icon) || icon.startsWith("/")
     }
 
     expose({ toggle, close })
@@ -239,9 +293,9 @@ export default {
       loading,
       isImageIcon,
       setSearch,
-      isMobile
+      isMobile,
     }
-  }
+  },
 }
 </script>
 
diff --git a/frontend/src/directives/clickOutside.js b/frontend/src/directives/clickOutside.js
new file mode 100644
index 000000000..22dae7e97
--- /dev/null
+++ b/frontend/src/directives/clickOutside.js
@@ -0,0 +1,159 @@
+/**
+ * @file clickOutsideDirective.js
+ * @description 一个用于检测元素外部点击的Vue 3自定义指令。
+ *
+ * @example
+ * // 在 main.js 中全局注册
+ * import { createApp } from 'vue'
+ * import App from './App.vue'
+ * import ClickOutside from './clickOutsideDirective.js'
+ *
+ * const app = createApp(App)
+ * app.directive('click-outside', ClickOutside)
+ * app.mount('#app')
+ *
+ * // 在组件中使用
+ * <div v-click-outside="myMethod">...</div>
+ *
+ * // 排除特定元素
+ * <div v-click-outside:[myExcludedElement]="myMethod">...</div>
+ * <div v-click-outside:[[el1, el2]]="myMethod">...</div>
+ */
+
+// 使用一个Map来存储所有指令绑定的元素及其对应的处理器
+// 键是HTMLElement，值是一个包含处理器和回调函数的对象数组
+const nodeList = new Map();
+
+// 检查是否在客户端环境，以避免在SSR（服务器端渲染）时执行
+const isClient = typeof window !== 'undefined';
+
+// 在客户端环境中，只设置一次全局的 mousedown 和 mouseup 监听器
+if (isClient) {
+  let startClick;
+
+  document.addEventListener('mousedown', (e) => (startClick = e));
+
+  document.addEventListener('mouseup', (e) => {
+    // 遍历所有注册的元素和它们的处理器
+    for (const handlers of nodeList.values()) {
+      for (const { documentHandler } of handlers) {
+        // 调用每个处理器，传入 mouseup 和 mousedown 事件
+        documentHandler(e, startClick);
+      }
+    }
+    // 完成后重置 startClick
+    startClick = undefined;
+  });
+}
+
+/**
+ * 创建一个文档事件处理器。
+ * @param {HTMLElement} el - 指令绑定的元素。
+ * @param {import('vue').DirectiveBinding} binding - 指令的绑定对象。
+ * @returns {Function} 返回一个处理函数。
+ */
+function createDocumentHandler(el, binding) {
+  let excludes = [];
+  // binding.arg 可以是一个元素或一个元素数组，用于排除不需要触发回调的点击
+  if (Array.isArray(binding.arg)) {
+    excludes = binding.arg;
+  } else if (binding.arg instanceof HTMLElement) {
+    excludes.push(binding.arg);
+  }
+
+  return function (mouseup, mousedown) {
+    // 从组件实例中获取 popper 引用（如果存在），这对于处理下拉菜单、弹窗等很有用
+    const popperRef = binding.instance?.popperRef;
+    const mouseUpTarget = mouseup.target;
+    const mouseDownTarget = mousedown?.target;
+
+    // 检查各种条件，如果满足任一条件，则不执行回调
+    const isBound = !binding || !binding.instance;
+    const isTargetExists = !mouseUpTarget || !mouseDownTarget;
+    const isContainedByEl = el.contains(mouseUpTarget) || el.contains(mouseDownTarget);
+    const isSelf = el === mouseUpTarget;
+
+    // 检查点击是否发生在任何被排除的元素内部
+    const isTargetExcluded =
+      (excludes.length && excludes.some((item) => item?.contains(mouseUpTarget))) ||
+      (excludes.length && excludes.includes(mouseDownTarget));
+
+    // 检查点击是否发生在关联的 popper 元素内部
+    const isContainedByPopper =
+      popperRef &&
+      (popperRef.contains(mouseUpTarget) || popperRef.contains(mouseDownTarget));
+
+    if (
+      isBound ||
+      isTargetExists ||
+      isContainedByEl ||
+      isSelf ||
+      isTargetExcluded ||
+      isContainedByPopper
+    ) {
+      return;
+    }
+
+    // 如果所有检查都通过，说明点击发生在外部，执行指令传入的回调函数
+    binding.value(mouseup, mousedown);
+  };
+}
+
+const ClickOutside = {
+  /**
+   * 在绑定元素的 attribute 或事件监听器被应用之前调用。
+   * @param {HTMLElement} el
+   * @param {import('vue').DirectiveBinding} binding
+   */
+  beforeMount(el, binding) {
+    if (!nodeList.has(el)) {
+      nodeList.set(el, []);
+    }
+
+    nodeList.get(el).push({
+      documentHandler: createDocumentHandler(el, binding),
+      bindingFn: binding.value,
+    });
+  },
+
+  /**
+   * 在包含组件的 VNode 及其子组件的 VNode 更新后调用。
+   * @param {HTMLElement} el
+   * @param {import('vue').DirectiveBinding} binding
+   */
+  updated(el, binding) {
+    if (!nodeList.has(el)) {
+      nodeList.set(el, []);
+    }
+
+    const handlers = nodeList.get(el);
+    // 查找旧的回调函数对应的处理器
+    const oldHandlerIndex = handlers.findIndex(
+      (item) => item.bindingFn === binding.oldValue
+    );
+
+    const newHandler = {
+      documentHandler: createDocumentHandler(el, binding),
+      bindingFn: binding.value,
+    };
+
+    if (oldHandlerIndex >= 0) {
+      // 如果找到了，就替换成新的处理器
+      handlers.splice(oldHandlerIndex, 1, newHandler);
+    } else {
+      // 否则，直接添加新的处理器
+      handlers.push(newHandler);
+    }
+  },
+
+  /**
+   * 在绑定元素的父组件卸载后调用。
+   * @param {HTMLElement} el
+   */
+  unmounted(el) {
+    // 当元素卸载时，从Map中移除它，以进行垃圾回收并防止内存泄漏
+    nodeList.delete(el);
+  },
+};
+
+export default ClickOutside;
diff --git a/frontend/src/main.js b/frontend/src/main.js
index 6fe6cf3a4..cb0db8df5 100644
--- a/frontend/src/main.js
+++ b/frontend/src/main.js
@@ -12,6 +12,8 @@ import { checkToken, clearToken, isLogin } from './utils/auth'
 import { loginWithGoogle } from './utils/google'
 import { initTheme } from './utils/theme'
 import { clearVditorStorage } from './utils/clearVditorStorage'
+import ClickOutside from './directives/clickOutside' // 确保路径正确
+
 
 // 采用本地开发环境
 // export const API_DOMAIN = 'http://127.0.0.1'
@@ -38,16 +40,18 @@ clearVditorStorage()
 const app = createApp(App)
 app.use(router)
 app.use(
-  Toast, 
-  { 
+  Toast,
+  {
     position: POSITION.TOP_RIGHT,
     containerClassName: "open-isle-toast-style-v1",
     transition: "Vue-Toastification__fade",
     // closeButton: false,
     timeout: 2000,
-  }, 
+  },
 )
 
+app.directive('click-outside', ClickOutside)
+
 app.mount('#app')
 
 checkToken().then(valid => {