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frontend-web/src/open-canvas/components/ai-writing/WritingSetupChat.tsx

@@ -77,16 +77,24 @@ export function WritingSetupChat() {
     setThreadPrepared(true);
   }, [threadId, threadPrepared]);
 
+  // 生成中点提交按钮 = 暂停：取消当前 SSE 流（与主聊天页一致）。
   const handleChatSubmit = useCallback(
     async (text: string) => {
+      if (thread.isLoading) {
+        void thread.stop();
+        return;
+      }
       const trimmed = text.trim();
-      if (!trimmed || thread.isLoading) return;
+      if (!trimmed) return;
       await ensureThreadExists();
       await sendMessage(threadId, { text: trimmed, files: [] });
     },
-    [ensureThreadExists, sendMessage, thread.isLoading, threadId],
+    [thread, ensureThreadExists, sendMessage, threadId],
   );
 
+  // 提交按钮状态：生成中显示「停止」方块，可点击暂停对话
+  const submitStatus = thread.error ? 'error' : thread.isLoading ? 'streaming' : 'ready';
+
   const handleApprove = useCallback(
     async (payload: SetupWritingApprovalPayload) => {
       applyProposal(payload);
@@ -150,10 +158,9 @@ export function WritingSetupChat() {
             <PromptInput onSubmit={({ text }) => void handleChatSubmit(text)}>
               <PromptInputTextarea
                 placeholder="例如：帮我写一篇 2000 字、面向行业专家的新能源汽车出口分析"
-                disabled={thread.isLoading}
               />
               <PromptInputFooter className="justify-end">
-                <PromptInputSubmit disabled={thread.isLoading} />
+                <PromptInputSubmit status={submitStatus} />
               </PromptInputFooter>
             </PromptInput>
           </div>