perf: 优化版本

Yi.Ai.Vue3/src/components/ChatMessageList/index.vue

@@ -0,0 +1,355 @@
+<template>
+  <div class="chat-message-list" :style="{ maxHeight }">
+    <div ref="scrollContainer" class="chat-message-list__container">
+      <div class="chat-message-list__content">
+        <div
+          v-for="(item, index) in list"
+          :key="item.key || index"
+          class="chat-message-item"
+          :class="{
+            'chat-message-item--user': item.placement === 'end',
+            'chat-message-item--assistant': item.placement === 'start'
+          }"
+        >
+          <!-- 消息头部 -->
+          <div v-if="$slots.header" class="chat-message-item__header">
+            <slot name="header" :item="item" :index="index" />
+          </div>
+
+          <!-- 消息主体 -->
+          <div class="chat-message-item__body">
+            <!-- 头像 -->
+            <div v-if="item.avatar" class="chat-message-item__avatar">
+              <img
+                :src="item.avatar"
+                :style="{
+                  width: item.avatarSize || '40px',
+                  height: item.avatarSize || '40px'
+                }"
+                alt="avatar"
+              >
+            </div>
+
+            <!-- 消息内容 -->
+            <div
+              class="chat-message-item__content"
+              :class="{
+                'chat-message-item__content--no-style': item.noStyle
+              }"
+            >
+              <slot name="content" :item="item" :index="index">
+                {{ item.content }}
+              </slot>
+            </div>
+          </div>
+
+          <!-- 消息底部 -->
+          <div v-if="$slots.footer" class="chat-message-item__footer">
+            <slot name="footer" :item="item" :index="index" />
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, nextTick, onMounted, onUnmounted } from 'vue';
+
+interface MessageItem {
+  key?: number;
+  avatar?: string;
+  avatarSize?: string;
+  placement?: 'start' | 'end';
+  content?: string;
+  noStyle?: boolean;
+  [key: string]: any;
+}
+
+interface Props {
+  list: MessageItem[];
+  maxHeight?: string;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  list: () => [],
+  maxHeight: '100%'
+});
+
+const scrollContainer = ref<HTMLDivElement | null>(null);
+const autoScroll = ref(true); // 是否自动滚动到底部
+const isUserScrolling = ref(false); // 用户是否正在手动滚动
+let scrollTimeout: any = null;
+let mutationObserver: MutationObserver | null = null;
+let scrollRAF: number | null = null; // 用于存储 requestAnimationFrame ID
+
+/**
+ * 检查是否滚动到底部
+ * 允许一定的误差范围（5px）
+ */
+function isScrolledToBottom(): boolean {
+  if (!scrollContainer.value) return false;
+  const { scrollTop, scrollHeight, clientHeight } = scrollContainer.value;
+  return scrollHeight - scrollTop - clientHeight < 5;
+}
+
+/**
+ * 立即滚动到底部（用于内容快速变化时）
+ */
+function scrollToBottomImmediate() {
+  if (!scrollContainer.value || !autoScroll.value) return;
+  scrollContainer.value.scrollTop = scrollContainer.value.scrollHeight;
+}
+
+/**
+ * 平滑滚动到底部（使用 RAF 避免过度调用）
+ */
+function scrollToBottomSmooth() {
+  if (!scrollContainer.value || !autoScroll.value) return;
+
+  // 取消之前的 RAF，避免重复调用
+  if (scrollRAF !== null) {
+    cancelAnimationFrame(scrollRAF);
+  }
+
+  scrollRAF = requestAnimationFrame(() => {
+    if (scrollContainer.value) {
+      scrollContainer.value.scrollTop = scrollContainer.value.scrollHeight;
+    }
+    scrollRAF = null;
+  });
+}
+
+/**
+ * 滚动到底部（立即）
+ */
+function scrollToBottom() {
+  nextTick(() => {
+    if (scrollContainer.value) {
+      autoScroll.value = true; // 重新启用自动滚动
+      scrollContainer.value.scrollTop = scrollContainer.value.scrollHeight;
+    }
+  });
+}
+
+/**
+ * 处理滚动事件
+ * 检测用户是否手动滚动离开底部
+ */
+function handleScroll() {
+  if (!scrollContainer.value) return;
+
+  // 清除之前的定时器
+  if (scrollTimeout) {
+    clearTimeout(scrollTimeout);
+  }
+
+  // 标记用户正在滚动
+  isUserScrolling.value = true;
+
+  // 检查是否在底部
+  const atBottom = isScrolledToBottom();
+
+  if (atBottom) {
+    // 如果滚动到底部，启用自动滚动
+    autoScroll.value = true;
+  } else {
+    // 如果不在底部，禁用自动滚动
+    autoScroll.value = false;
+  }
+
+  // 300ms 后标记用户停止滚动
+  scrollTimeout = setTimeout(() => {
+    isUserScrolling.value = false;
+  }, 300);
+}
+
+/**
+ * 监听内容变化，自动滚动到底部
+ */
+function observeContentChanges() {
+  if (!scrollContainer.value) return;
+
+  const contentElement = scrollContainer.value.querySelector('.chat-message-list__content');
+  if (!contentElement) return;
+
+  // 创建 MutationObserver 监听内容变化
+  mutationObserver = new MutationObserver((mutations) => {
+    // 如果启用了自动滚动且用户没有在滚动，则滚动到底部
+    if (autoScroll.value && !isUserScrolling.value) {
+      // 检查是否有文本内容变化（characterData），这通常是 SSE 流式输出
+      const hasCharacterDataChange = mutations.some(
+        mutation => mutation.type === 'characterData'
+      );
+
+      if (hasCharacterDataChange) {
+        // SSE 流式输出时使用立即滚动，避免跳动
+        scrollToBottomImmediate();
+      } else {
+        // 其他情况使用平滑滚动
+        scrollToBottomSmooth();
+      }
+    }
+  });
+
+  // 监听子元素的变化和文本内容的变化
+  mutationObserver.observe(contentElement, {
+    childList: true, // 监听子元素的添加/删除
+    subtree: true, // 监听所有后代元素
+    characterData: true, // 监听文本内容变化
+    attributes: false // 不监听属性变化
+  });
+}
+
+// 组件挂载时初始化
+onMounted(() => {
+  if (scrollContainer.value) {
+    scrollContainer.value.addEventListener('scroll', handleScroll, { passive: true });
+  }
+
+  // 初始化时滚动到底部
+  nextTick(() => {
+    scrollToBottom();
+    // 开始监听内容变化
+    observeContentChanges();
+  });
+});
+
+// 组件卸载时清理
+onUnmounted(() => {
+  if (scrollContainer.value) {
+    scrollContainer.value.removeEventListener('scroll', handleScroll);
+  }
+  if (scrollTimeout) {
+    clearTimeout(scrollTimeout);
+  }
+  if (scrollRAF !== null) {
+    cancelAnimationFrame(scrollRAF);
+  }
+  if (mutationObserver) {
+    mutationObserver.disconnect();
+  }
+});
+
+// 暴露方法给父组件调用
+defineExpose({
+  scrollToBottom
+});
+</script>
+
+<style scoped lang="scss">
+.chat-message-list {
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+
+  &__container {
+    width: 100%;
+    height: 100%;
+    overflow-y: auto;
+    overflow-x: hidden;
+
+    /* 美化滚动条 */
+    &::-webkit-scrollbar {
+      width: 6px;
+    }
+
+    &::-webkit-scrollbar-track {
+      background: transparent;
+    }
+
+    &::-webkit-scrollbar-thumb {
+      background: rgba(0, 0, 0, 0.2);
+      border-radius: 3px;
+
+      &:hover {
+        background: rgba(0, 0, 0, 0.3);
+      }
+    }
+  }
+
+  &__content {
+    width: 100%;
+    min-height: 100%;
+    display: flex;
+    flex-direction: column;
+  }
+}
+
+.chat-message-item {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  margin-bottom: 16px;
+
+  &__header {
+    width: 100%;
+    margin-bottom: 8px;
+  }
+
+  &__body {
+    display: flex;
+    gap: 12px;
+    width: 100%;
+  }
+
+  &__avatar {
+    flex-shrink: 0;
+
+    img {
+      border-radius: 50%;
+      object-fit: cover;
+    }
+  }
+
+  &__content {
+    flex: 1;
+    min-width: 0;
+    padding: 12px 16px;
+    background-color: #f5f5f5;
+    border-radius: 12px;
+    word-wrap: break-word;
+    overflow-wrap: break-word;
+
+    &--no-style {
+      background-color: transparent;
+      padding: 0;
+    }
+  }
+
+  &__footer {
+    width: 100%;
+    margin-top: 8px;
+    padding-left: 52px; /* 头像宽度 + gap */
+  }
+
+  /* 用户消息样式 */
+  &--user {
+    .chat-message-item__body {
+      flex-direction: row-reverse;
+    }
+
+    .chat-message-item__content {
+      background-color: #409eff;
+      color: white;
+    }
+
+    .chat-message-item__footer {
+      padding-left: 0;
+      padding-right: 52px;
+      text-align: right;
+    }
+  }
+
+  /* 助手消息样式 */
+  &--assistant {
+    .chat-message-item__body {
+      flex-direction: row;
+    }
+
+    .chat-message-item__content {
+      background-color: #f5f5f5;
+    }
+  }
+}
+</style>

Yi.Ai.Vue3/src/pages/chat/layouts/chatWithId/index.vue

@@ -2,7 +2,6 @@
 <script setup lang="ts">
 import type { AnyObject } from 'typescript-api-pro';
 import type { BubbleProps } from 'vue-element-plus-x/types/Bubble';
-import type { BubbleListInstance } from 'vue-element-plus-x/types/BubbleList';
 import type { FilesCardProps } from 'vue-element-plus-x/types/FilesCard';
 import type { ThinkingStatus } from 'vue-element-plus-x/types/Thinking';
 import { ArrowLeftBold, ArrowRightBold, Document, Loading } from '@element-plus/icons-vue';
@@ -14,6 +13,7 @@ import { useRoute } from 'vue-router';
 import { send } from '@/api';
 import ModelSelect from '@/components/ModelSelect/index.vue';
 import YMarkdown from '@/vue-element-plus-y/components/XMarkdown/index.vue';
+import ChatMessageList from '@/components/ChatMessageList/index.vue';
 import { useGuideTourStore } from '@/stores';
 import { useChatStore } from '@/stores/modules/chat';
 import { useFilesStore } from '@/stores/modules/files';
@@ -50,7 +50,7 @@ const avatar = computed(() => {
 const inputValue = ref('');
 const senderRef = ref<InstanceType<typeof Sender> | null>(null);
 const bubbleItems = ref<MessageItem[]>([]);
-const bubbleListRef = ref<BubbleListInstance | null>(null);
+const bubbleListRef = ref<InstanceType<typeof ChatMessageList> | null>(null);
 const isSending = ref(false);
 
 const { stream, loading: isLoading, cancel } = useHookFetch({
@@ -446,7 +446,7 @@ function handleImagePreview(url: string) {
 <template>
   <div class="chat-with-id-container">
     <div class="chat-warp">
-      <BubbleList ref="bubbleListRef" :list="bubbleItems" max-height="calc(100vh - 240px)">
+      <ChatMessageList ref="bubbleListRef" :list="bubbleItems" max-height="calc(100vh - 240px)">
         <template #header="{ item }">
           <Thinking
             v-if="item.reasoning_content" v-model="item.thinlCollapse" :content="item.reasoning_content"
@@ -503,7 +503,7 @@ function handleImagePreview(url: string) {
             </div>
           </div>
         </template>
-      </BubbleList>
+      </ChatMessageList>
 
       <Sender
         ref="senderRef" v-model="inputValue" class="chat-defaul-sender" data-tour="chat-sender" :auto-size="{
@@ -577,10 +577,10 @@ function handleImagePreview(url: string) {
     }
   }
   :deep() {
-    .el-bubble-list {
+    .chat-message-list {
       padding-top: 24px;
     }
-    .el-bubble {
+    .chat-message-item {
       padding: 0 12px;
       padding-bottom: 24px;
     }

Yi.Ai.Vue3/types/components.d.ts

@@ -11,6 +11,7 @@ declare module 'vue' {
     AccountPassword: typeof import('./../src/components/LoginDialog/components/FormLogin/AccountPassword.vue')['default']
     APIKeyManagement: typeof import('./../src/components/userPersonalCenter/components/APIKeyManagement.vue')['default']
     CardFlipActivity: typeof import('./../src/components/userPersonalCenter/components/CardFlipActivity.vue')['default']
+    ChatMessageList: typeof import('./../src/components/ChatMessageList/index.vue')['default']
     DailyTask: typeof import('./../src/components/userPersonalCenter/components/DailyTask.vue')['default']
     DeepThinking: typeof import('./../src/components/DeepThinking/index.vue')['default']
     ElAlert: typeof import('element-plus/es')['ElAlert']