💄 style: fix scroll and expand (lobehub#2470)

* 💄 style: Fix scroll and expand

* 💄 style: improve empty card

---------

Co-authored-by: arvinxx <arvinx@foxmail.com>

src/app/(main)/chat/(workspace)/@topic/_layout/Desktop.tsx

@@ -0,0 +1,17 @@
+import { PropsWithChildren } from 'react';
+import { Flexbox } from 'react-layout-kit';
+
+import Header from '../features/Header';
+
+const Layout = ({ children }: PropsWithChildren) => {
+  return (
+    <>
+      <Header />
+      <Flexbox height={'100%'} style={{ overflow: 'hidden', position: 'relative' }} width={'100%'}>
+        {children}
+      </Flexbox>
+    </>
+  );
+};
+
+export default Layout;

src/app/(main)/chat/(workspace)/@topic/_layout/Mobile.tsx

@@ -0,0 +1,21 @@
+import { PropsWithChildren } from 'react';
+import { Flexbox } from 'react-layout-kit';
+
+import TopicSearchBar from '../features/TopicSearchBar';
+
+const Layout = ({ children }: PropsWithChildren) => {
+  return (
+    <Flexbox gap={8} height={'100%'} padding={'8px 8px 0'} style={{ overflow: 'hidden' }}>
+      <TopicSearchBar />
+      <Flexbox
+        height={'100%'}
+        style={{ marginInline: -8, overflow: 'hidden', position: 'relative' }}
+        width={'calc(100% + 16px)'}
+      >
+        {children}
+      </Flexbox>
+    </Flexbox>
+  );
+};
+
+export default Layout;

src/app/(main)/chat/(workspace)/@topic/default.tsx

@@ -1,15 +1,21 @@
 import { isMobileDevice } from '@/utils/responsive';
 
+import Desktop from './_layout/Desktop';
+import Mobile from './_layout/Mobile';
 import SystemRole from './features/SystemRole';
 import TopicListContent from './features/TopicListContent';
 
 const Topic = () => {
   const mobile = isMobileDevice();
 
+  const Layout = mobile ? Mobile : Desktop;
+
   return (
     <>
       {!mobile && <SystemRole />}
-      <TopicListContent mobile={mobile} />
+      <Layout>
+        <TopicListContent />
+      </Layout>
     </>
   );
 };

src/app/(main)/chat/(workspace)/@topic/features/TopicListContent/Topic/SkeletonList.tsx → src/app/(main)/chat/(workspace)/@topic/features/TopicListContent/SkeletonList.tsx

@@ -45,7 +45,7 @@ export const Placeholder = memo(() => {
 });
 
 export const SkeletonList = memo(() => (
-  <Flexbox>
+  <Flexbox style={{ paddingTop: 6 }}>
     {Array.from({ length: 8 }).map((_, i) => (
       <Placeholder key={i} />
     ))}

src/app/(main)/chat/(workspace)/@topic/features/TopicListContent/Topic/TopicItem.tsx → src/app/(main)/chat/(workspace)/@topic/features/TopicListContent/TopicItem.tsx

@@ -19,7 +19,12 @@ const useStyles = createStyles(({ css, token, isDarkMode }) => ({
   `,
   container: css`
     cursor: pointer;
+
+    width: calc(100% - 16px);
+    margin-block: 2px;
+    margin-inline: 8px;
     padding: 8px;
+
     border-radius: ${token.borderRadius}px;
 
     &:hover {

src/app/(main)/chat/(workspace)/@topic/features/TopicListContent/index.tsx

@@ -1,18 +1,100 @@
+'use client';
+
+import { EmptyCard } from '@lobehub/ui';
+import { useThemeMode } from 'antd-style';
+import isEqual from 'fast-deep-equal';
+import React, { memo, useCallback, useRef } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Flexbox } from 'react-layout-kit';
+import { Virtuoso, VirtuosoHandle } from 'react-virtuoso';
+
+import { imageUrl } from '@/const/url';
+import { useChatStore } from '@/store/chat';
+import { topicSelectors } from '@/store/chat/selectors';
+import { useUserStore } from '@/store/user';
+import { ChatTopic } from '@/types/topic';
+
+import { Placeholder, SkeletonList } from './SkeletonList';
+import TopicItem from './TopicItem';
+
+const TopicListContent = memo(() => {
+  const { t } = useTranslation('chat');
+  const virtuosoRef = useRef<VirtuosoHandle>(null);
+  const { isDarkMode } = useThemeMode();
+  const [topicsInit, activeTopicId, topicLength] = useChatStore((s) => [
+    s.topicsInit,
+    s.activeTopicId,
+    topicSelectors.currentTopicLength(s),
+  ]);
+  const [visible, updateGuideState] = useUserStore((s) => [
+    s.preference.guide?.topic,
+    s.updateGuideState,
+  ]);
+
+  const topics = useChatStore(
+    (s) => [
+      {
+        favorite: false,
+        id: 'default',
+        title: t('topic.defaultTitle'),
+      } as ChatTopic,
+      ...topicSelectors.displayTopics(s),
+    ],
+    isEqual,
+  );
+
+  const itemContent = useCallback(
+    (index: number, { id, favorite, title }: ChatTopic) =>
+      index === 0 ? (
+        <TopicItem active={!activeTopicId} fav={favorite} title={title} />
+      ) : (
+        <TopicItem active={activeTopicId === id} fav={favorite} id={id} key={id} title={title} />
+      ),
+    [activeTopicId],
+  );
+
+  const activeIndex = topics.findIndex((topic) => topic.id === activeTopicId);
 
-import Header from './Header';
-import { Topic } from './Topic';
-import TopicSearchBar from './TopicSearchBar';
-
-const TopicListContent = ({ mobile }: { mobile?: boolean }) => {
-  return (
-    <Flexbox gap={mobile ? 8 : 0} height={'100%'} style={{ overflow: 'hidden' }}>
-      {mobile ? <TopicSearchBar /> : <Header />}
-      <Flexbox gap={16} height={'100%'} style={{ paddingTop: 6, position: 'relative' }}>
-        <Topic mobile={mobile} />
-      </Flexbox>
-    </Flexbox>
+  return !topicsInit ? (
+    <SkeletonList />
+  ) : (
+    <>
+      {topicLength === 0 && visible && (
+        <Flexbox paddingInline={8}>
+          <EmptyCard
+            alt={t('topic.guide.desc')}
+            cover={imageUrl(`empty_topic_${isDarkMode ? 'dark' : 'light'}.webp`)}
+            desc={t('topic.guide.desc')}
+            height={120}
+            imageProps={{
+              priority: true,
+            }}
+            onVisibleChange={(visible) => {
+              updateGuideState({ topic: visible });
+            }}
+            style={{ flex: 'none', marginBottom: 12 }}
+            title={t('topic.guide.title')}
+            visible={visible}
+            width={200}
+          />
+        </Flexbox>
+      )}
+      <Virtuoso
+        components={{ ScrollSeekPlaceholder: Placeholder }}
+        computeItemKey={(_, item) => item.id}
+        data={topics}
+        fixedItemHeight={44}
+        initialTopMostItemIndex={Math.max(activeIndex, 0)}
+        itemContent={itemContent}
+        overscan={44 * 10}
+        ref={virtuosoRef}
+        scrollSeekConfiguration={{
+          enter: (velocity) => Math.abs(velocity) > 350,
+          exit: (velocity) => Math.abs(velocity) < 10,
+        }}
+      />
+    </>
   );
-};
+});
 
 export default TopicListContent;

src/app/(main)/chat/(workspace)/_layout/Desktop/TopicPanel.tsx

@@ -2,7 +2,8 @@
 
 import { DraggablePanel, DraggablePanelContainer } from '@lobehub/ui';
 import { createStyles, useResponsive } from 'antd-style';
-import { PropsWithChildren, memo, useEffect, useLayoutEffect, useState } from 'react';
+import isEqual from 'fast-deep-equal';
+import { PropsWithChildren, memo, useEffect, useState } from 'react';
 
 import SafeSpacing from '@/components/SafeSpacing';
 import { CHAT_SIDEBAR_WIDTH } from '@/const/layoutTokens';
@@ -26,35 +27,31 @@ const useStyles = createStyles(({ css, token }) => ({
 const TopicPanel = memo(({ children }: PropsWithChildren) => {
   const { styles } = useStyles();
   const { md = true, lg = true } = useResponsive();
-  const [showAgentSettings, toggleConfig, isPreferenceInit] = useGlobalStore((s) => [
+  const [showAgentSettings, toggleConfig] = useGlobalStore((s) => [
     s.preference.showChatSideBar,
     s.toggleChatSideBar,
     s.isPreferenceInit,
   ]);
-  const [expand, setExpand] = useState(showAgentSettings);
+  const [cacheExpand, setCacheExpand] = useState<boolean>(Boolean(showAgentSettings));
 
-  const handleExpand = (e: boolean) => {
-    toggleConfig(e);
-    setExpand(e);
+  const handleExpand = (expand: boolean) => {
+    if (isEqual(expand, Boolean(showAgentSettings))) return;
+    toggleConfig(expand);
+    setCacheExpand(expand);
   };
 
-  useLayoutEffect(() => {
-    if (!isPreferenceInit) return;
-    setExpand(showAgentSettings);
-  }, [isPreferenceInit, showAgentSettings]);
-
   useEffect(() => {
-    if (lg && showAgentSettings) setExpand(true);
-    if (!lg) setExpand(false);
-  }, [lg, showAgentSettings]);
+    if (lg && cacheExpand) toggleConfig(true);
+    if (!lg) toggleConfig(false);
+  }, [lg, cacheExpand]);
 
   return (
     <DraggablePanel
       className={styles.drawer}
       classNames={{
         content: styles.content,
       }}
-      expand={expand}
+      expand={showAgentSettings}
       minWidth={CHAT_SIDEBAR_WIDTH}
       mode={md ? 'fixed' : 'float'}
       onExpandChange={handleExpand}

src/app/(main)/chat/(workspace)/_layout/Mobile/TopicModal.tsx

@@ -17,7 +17,15 @@ const Topics = memo(({ children }: PropsWithChildren) => {
   const { t } = useTranslation('chat');
 
   return (
-    <Modal allowFullscreen onCancel={() => setOpen(false)} open={open} title={t('topic.title')}>
+    <Modal
+      allowFullscreen
+      onCancel={() => setOpen(false)}
+      open={open}
+      styles={{
+        body: { padding: 0 },
+      }}
+      title={t('topic.title')}
+    >
       {children}
     </Modal>
   );