feat: AI生成回复时显示停止生成按钮

www/app.js

@@ -781,6 +781,9 @@ async function streamGenerate(userMsgIndex) {
   }
   
   contentEl.innerHTML = '<span class="streaming-cursor">▌</span>';
+  
+  // 显示停止生成按钮
+  showStopGenerateBtn();
 
   try {
     // 构建请求体 - 统一使用 glm-4.5-air，通过 thinking 参数控制
@@ -814,8 +817,30 @@ async function streamGenerate(userMsgIndex) {
     const decoder = new TextDecoder();
     let buffer = '';
     let thinkingOutputStarted = false;  // 正式内容是否开始输出
+    let abortController = new AbortController();  // 用于中断流
+    
+    // 绑定停止按钮事件
+    const stopBtn = document.getElementById('stopGenerateBtn');
+    if (stopBtn) {
+      stopBtn.onclick = () => {
+        abortController.abort();
+        isLoading = false;
+        sendBtn.disabled = false;
+        hideStopGenerateBtn();
+        // 更新最终内容
+        if (thinkingEl && enableThinking && currentConversation.messages[aiMessageIndex].thinking) {
+          thinkingEl.innerHTML = renderMarkdown(currentConversation.messages[aiMessageIndex].thinking);
+        }
+        contentEl.innerHTML = renderMarkdown(currentConversation.messages[aiMessageIndex].content);
+        currentConversation.updatedAt = Date.now();
+        saveConversations();
+        renderMessages();
+      };
+    }
 
     while (true) {
+      if (abortController.signal.aborted) break;  // 检查是否已停止
+      
       const { done, value } = await reader.read();
       if (done) break;
 
@@ -877,6 +902,7 @@ async function streamGenerate(userMsgIndex) {
   } finally {
     isLoading = false;
     sendBtn.disabled = false;
+    hideStopGenerateBtn();
     currentConversation.updatedAt = Date.now();
     saveConversations();
     renderMessages();
@@ -889,6 +915,33 @@ async function streamGenerate(userMsgIndex) {
   }
 }
 
+// 显示停止生成按钮
+function showStopGenerateBtn() {
+  // 检查是否已存在
+  if (document.getElementById('stopGenerateBtn')) return;
+  
+  const stopBtn = document.createElement('button');
+  stopBtn.id = 'stopGenerateBtn';
+  stopBtn.className = 'stop-generate-btn';
+  stopBtn.innerHTML = `
+    <svg viewBox="0 0 24 24" width="16" height="16"><path fill="currentColor" d="M6 6h12v12H6z"/></svg>
+    <span>停止生成</span>
+  `;
+  
+  // 插入到消息容器底部
+  if (messagesContainer) {
+    messagesContainer.appendChild(stopBtn);
+  }
+}
+
+// 隐藏停止生成按钮
+function hideStopGenerateBtn() {
+  const stopBtn = document.getElementById('stopGenerateBtn');
+  if (stopBtn) {
+    stopBtn.remove();
+  }
+}
+
 // 生成对话标题
 async function generateConversationTitle() {
   if (!currentConversation) return;