chat: improve copy with icon and plain/markdown modes

src/components/icons.tsx

@@ -0,0 +1,33 @@
+import type { SVGProps } from 'react';
+
+export function ProductCopyIcon(props: SVGProps<SVGSVGElement>) {
+  const { width = 20, height = 20, ...rest } = props;
+  return (
+    <svg
+      width={width}
+      height={height}
+      viewBox="0 0 16 16"
+      fill="none"
+      xmlns="http://www.w3.org/2000/svg"
+      {...rest}
+    >
+      <path
+        d="M4.90476 4.66663H3C2.63181 4.66663 2.33334 4.9651 2.33334 5.33329V13C2.33334 13.3681 2.63181 13.6666 3 13.6666H10.6667C11.0349 13.6666 11.3333 13.3681 11.3333 13V11.0952"
+        stroke="currentColor"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <rect
+        x="5.33334"
+        y="2.33331"
+        width="8.33333"
+        height="8.33333"
+        rx="0.666667"
+        stroke="currentColor"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+

src/pages/chat/ChatPage.tsx

@@ -10,6 +10,7 @@ import ChatDrawers from './components/ChatDrawers';
 import { useChatScroll } from './hooks/useChatScroll';
 import { useChatData } from './hooks/useChatData';
 import { useChatSender } from './hooks/useChatSender';
+import { markdownToPlainText } from './utils/copy';
 
 export default function ChatPage() {
   const { id } = useParams();
@@ -106,7 +107,10 @@ export default function ChatPage() {
               streaming={sender.streaming}
               onRegenerate={sender.handleRegenerate}
               onSwitchBranch={sender.handleSwitchBranch}
-              onCopy={(text) => navigator.clipboard?.writeText(text).then(() => message.success('已复制'))}
+              onCopy={(text, mode) => {
+                const content = mode === 'markdown' ? text : markdownToPlainText(text);
+                return navigator.clipboard?.writeText(content).then(() => message.success(mode === 'markdown' ? '已复制（Markdown）' : '已复制（纯文本）'));
+              }}
             />
 
             <ChatInput
@@ -156,4 +160,3 @@ export default function ChatPage() {
     </div>
   );
 }
-

src/pages/chat/components/ChatBody.tsx

@@ -2,6 +2,7 @@ import { Divider, Tag } from 'antd';
 import type { Agent, BranchInfo, ChatMessage } from '../../../api';
 import Markdown from '../../../components/Markdown';
 import type { StreamingState } from '../hooks/useChatSender';
+import type { CopyMode } from '../utils/copy';
 import MessageItem from './messages/MessageItem';
 import { RetrievedView, ToolCallView } from './messages/MetaViews';
 
@@ -17,7 +18,7 @@ export default function ChatBody(props: {
   streaming: StreamingState;
   onRegenerate: (assistantId: string) => void;
   onSwitchBranch: (userMsgId: string, branchId: string) => void;
-  onCopy: (text: string) => void;
+  onCopy: (text: string, mode: CopyMode) => void;
 }) {
   const { bodyRef, agent, messages, branches, highlightId, sending, streaming, onRegenerate, onSwitchBranch, onCopy } = props;
 

src/pages/chat/components/messages/MessageItem.tsx

@@ -1,6 +1,8 @@
-import { Button, Space, Tag, Tooltip } from 'antd';
+import { Button, Dropdown, Space, Tag, Tooltip } from 'antd';
 import type { BranchInfo, ChatMessage } from '../../../../api';
 import Markdown from '../../../../components/Markdown';
+import { ProductCopyIcon } from '../../../../components/icons';
+import type { CopyMode } from '../../utils/copy';
 import { ReasoningView, RetrievedView, ToolCallView } from './MetaViews';
 
 export default function MessageItem(props: {
@@ -10,7 +12,7 @@ export default function MessageItem(props: {
   busy?: boolean;
   onRegenerate?: (id: string) => void;
   onSwitchBranch?: (userMsgId: string, branchId: string) => void;
-  onCopy?: (text: string) => void;
+  onCopy?: (text: string, mode: CopyMode) => void;
 }) {
   const { message, highlighted, branch, busy, onRegenerate, onSwitchBranch, onCopy } = props;
   const hasBranches = !!branch && branch.total > 1;
@@ -66,11 +68,21 @@ export default function MessageItem(props: {
             </Space>
           )}
           {message.meta?.aborted && <Tag color="orange">已停止</Tag>}
-          <Tooltip title="复制">
-            <Button size="small" type="text" onClick={() => onCopy?.(message.content)}>
-              📋
-            </Button>
-          </Tooltip>
+          <Dropdown
+            trigger={['click']}
+            menu={{
+              items: [
+                { key: 'plain', label: '复制纯文本', onClick: () => onCopy?.(message.content, 'plain') },
+                { key: 'markdown', label: '复制 Markdown', onClick: () => onCopy?.(message.content, 'markdown') }
+              ]
+            }}
+          >
+            <Tooltip title="复制">
+              <span className="chat-copy-icon" aria-label="copy">
+                <ProductCopyIcon />
+              </span>
+            </Tooltip>
+          </Dropdown>
           <Tooltip title="重新生成（开新分支）">
             <Button size="small" type="text" disabled={busy} onClick={() => onRegenerate?.(message.id)}>
               🔄

src/pages/chat/utils/copy.ts

@@ -0,0 +1,63 @@
+export type CopyMode = 'plain' | 'markdown';
+
+const splitTableRow = (line: string) =>
+  line
+    .trim()
+    .replace(/^\|/, '')
+    .replace(/\|$/, '')
+    .split('|')
+    .map((c) => c.trim());
+
+const isTableDividerLine = (line: string) =>
+  /^\s*\|?\s*:?-{3,}:?\s*(\|\s*:?-{3,}:?\s*)+\|?\s*$/.test(line);
+
+export function markdownToPlainText(input: string) {
+  let text = String(input ?? '').replace(/\r\n/g, '\n');
+
+  const lines = text.split('\n');
+  const out: string[] = [];
+
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i];
+    const next = lines[i + 1];
+
+    if (line.includes('|') && next && isTableDividerLine(next)) {
+      const header = splitTableRow(line);
+      out.push(header.join('\t'));
+      i += 1;
+      for (let j = i + 1; j < lines.length; j++) {
+        const rowLine = lines[j];
+        if (!rowLine.trim()) {
+          i = j;
+          break;
+        }
+        if (!rowLine.includes('|')) {
+          i = j - 1;
+          break;
+        }
+        out.push(splitTableRow(rowLine).join('\t'));
+        i = j;
+      }
+      continue;
+    }
+
+    out.push(line);
+  }
+
+  text = out.join('\n');
+
+  text = text.replace(/```[^\n]*\n([\s\S]*?)```/g, (_, code) => String(code).replace(/\n$/, ''));
+  text = text.replace(/`([^`]+)`/g, '$1');
+  text = text.replace(/^#{1,6}\s+/gm, '');
+  text = text.replace(/^>\s?/gm, '');
+  text = text.replace(/!\[([^\]]*)\]\(([^)]+)\)/g, (_, alt, url) => (alt ? `${alt} (${url})` : String(url)));
+  text = text.replace(/\[([^\]]+)\]\(([^)]+)\)/g, '$1 ($2)');
+  text = text.replace(/\*\*([^*]+)\*\*/g, '$1');
+  text = text.replace(/__([^_]+)__/g, '$1');
+  text = text.replace(/\*([^*]+)\*/g, '$1');
+  text = text.replace(/_([^_]+)_/g, '$1');
+
+  text = text.replace(/\n{3,}/g, '\n\n').trim();
+  return text;
+}
+

src/styles.css

@@ -633,6 +633,20 @@ body {
   margin: 0.2em 0;
 }
 
+.chat-copy-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 20px;
+  height: 20px;
+  cursor: pointer;
+  color: var(--color-text-secondary);
+}
+
+.chat-copy-icon:hover {
+  color: var(--color-text);
+}
+
 .bubble.assistant table {
   border-collapse: collapse;
   width: 100%;